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Instrument Function

R&S

®

SMBV100A

252

Operating Manual 1407.6062.32 ─ 08

Fig. 5-12: Effect of an identical offset for both signal components

SCPI command:

Gain Imbalance - Digital Impairments

Sets the imbalance of the I and Q vector.

The entry is made in dB (default) or %, where 1 dB offset is roughly 12 % according to
the following:

Imbalance [dB] = 20log ( | GainQ | / | GainI |)

An ideal I/Q modulator amplifies the I and Q signal path by exactly the same degree. The
imbalance corresponds to the difference in amplification of the I and Q channel and
therefore to the difference in amplitude of the signal components. In the vector diagram,
the length of the I vector changes relative to the length of the Q vector.

Positive values mean that the Q vector is amplified more than the I vector by the corre-
sponding percentage.

Impairment of Digital I/Q Signal and Noise Generator - AWGN/IMP Block

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Содержание SMBV100A

Страница 1: ...R S SMBV100A Vector Signal Generator Operating Manual Operating Manual 7ÊÌP 1407 6062 32 08 Test Measurement ...

Страница 2: ...lkit http www openssl org includes cryptographic software written by Eric Young eay cryptsoft com and software written by Tim Hudson tjh cryptsoft com LINUX is a trademark of Linus Torvalds Rohde Schwarz would like to thank the open source community for their valuable contribution to embedded computing 2012 Rohde Schwarz GmbH Co KG Muehldorfstr 15 81671 Munich Germany Phone 49 89 41 29 0 Fax 49 89...

Страница 3: ... shall assume no responsibility for such use of the product The product is used for its designated purpose if it is used in accordance with its product documentation and within its performance limits see data sheet documentation the following safety instructions Using the product requires technical skills and in some cases a basic knowledge of English It is therefore essential that only skilled an...

Страница 4: ...ndicates an imminently hazardous situation which if not avoided will result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury Indicates the possibility of incorrect operation which can result in damage to the pro...

Страница 5: ...not observed either at all or to the extent necessary electric shock fire and or serious personal injury or death may occur 1 Prior to switching on the product always ensure that the nominal voltage setting on the product matches the nominal voltage of the AC supply network If a different voltage is to be set the power fuse of the product may have to be changed accordingly 2 In the case of product...

Страница 6: ...t be fuse protected in such a way that anyone who has access to the product as well as the product itself is adequately protected from injury or damage 14 Use suitable overvoltage protection to ensure that no overvoltage such as that caused by a bolt of lightning can reach the product Otherwise the person operating the product will be exposed to the danger of an electric shock 15 Any object that i...

Страница 7: ...ts are given warning labels that are standardized according to their laser class Lasers can cause biological harm due to the properties of their radiation and due to their extremely concentrated electromagnetic power If a laser product e g a CD DVD drive is integrated into a Rohde Schwarz product absolutely no other settings or functions may be used as described in the product documentation The ob...

Страница 8: ... list in order to ensure the safety of the product 7 Cells and batteries must be recycled and kept separate from residual waste Rechargeable batteries and normal batteries that contain lead mercury or cadmium are hazardous waste Observe the national regulations regarding waste disposal and recycling Transport 1 The product may be very heavy Therefore the product must be handled with care In some c...

Страница 9: ...e Schwarz website Instrucciones de seguridad elementales Es imprescindible leer y cumplir las siguientes instrucciones e informaciones de seguridad El principio del grupo de empresas Rohde Schwarz consiste en tener nuestros productos siempre al día con los estándares de seguridad y de ofrecer a nuestros clientes el máximo grado de seguridad Nuestros productos y todos los equipos adicionales son si...

Страница 10: ...eguridad antes de usar el producto y respetarlas durante el uso del producto Deberán tenerse en cuenta todas las demás informaciones de seguridad como p ej las referentes a la protección de personas que encontrarán en el capítulo correspondiente de la documentación del producto y que también son de obligado cumplimiento En las presentes informaciones de seguridad se recogen todos los objetos que d...

Страница 11: ...ucto se emplea de forma sinónima el término CUIDADO Las palabras de señal corresponden a la definición habitual para aplicaciones civiles en el área económica europea Pueden existir definiciones diferentes a esta definición en otras áreas económicas o en aplicaciones militares Por eso se deberá tener en cuenta que las palabras de señal aquí descritas sean utilizadas siempre solamente en combinació...

Страница 12: ... la tensión preseleccionada en el producto coincida con la de la red de alimentación eléctrica Si es necesario modificar el ajuste de tensión también se deberán cambiar en caso dado los fusibles correspondientes del producto 2 Los productos de la clase de protección I con alimentación móvil y enchufe individual solamente podrán enchufarse a tomas de corriente con contacto de seguridad y con conduc...

Страница 13: ...r efectuadas por un electricista especializado 13 En el caso de dispositivos fijos que no estén provistos de fusibles interruptor automático ni otros mecanismos de seguridad similares el circuito de alimentación debe estar protegido de modo que todas las personas que puedan acceder al producto así como el producto mismo estén a salvo de posibles daños 14 Todo producto debe estar protegido contra s...

Страница 14: ...las personas con marcapasos pueden correr peligro a causa de la radiación electromagnética El empresario operador tiene la obligación de evaluar y señalizar las áreas de trabajo en las que exista un riesgo elevado de exposición a radiaciones 6 Tenga en cuenta que en caso de incendio pueden desprenderse del producto sustancias tóxicas gases líquidos etc que pueden generar daños a la salud Por eso e...

Страница 15: ...les conductores No deben extraerse las celdas o baterías de sus embalajes originales hasta el momento en que vayan a utilizarse 4 Las celdas o baterías no deben someterse a impactos mecánicos fuertes indebidos 5 En caso de falta de estanqueidad de una celda el líquido vertido no debe entrar en contacto con la piel ni los ojos Si se produce contacto lavar con agua abundante la zona afectada y avisa...

Страница 16: ...ación para los fabricantes dentro de la UE Para desechar el producto de manera respetuosa con el medio ambiente diríjase a su servicio de atención al cliente de Rohde Schwarz 3 Si se trabaja de manera mecánica y o térmica cualquier producto o componente más allá del funcionamiento previsto pueden liberarse sustancias peligrosas polvos con contenido de metales pesados como p ej plomo berilio o níqu...

Страница 17: ...ment system stan dards The Rohde Schwarz quality management system is certified according to standards such as ISO9001 and ISO14001 Environmental commitment Energy efficient products J J Continuous improvement in J J environmental sustainability ISO14001 certified environmental J J management system Cher client Vous avez choisi d acheter un pro duit Rohde Schwarz Vous disposez donc d un produit fa...

Страница 18: ...approximation of the laws of the Member States relating to electrical equipment for use within defined voltage limits 2006 95 EC relating to electromagnetic compatibility 2004 108 EC Conformity is proven by compliance with the following standards EN 61010 1 2001 EN 61326 1 2006 EN 61326 2 1 2006 EN 55011 2007 A2 2007 class B EN 61000 3 2 2006 EN 61000 3 3 1995 A1 2001 A2 2005 For the assessment of...

Страница 19: ...rument up to date and to be informed about new application notes related to your instrument please send an e mail to the Customer Support Center stating your instrument and your wish We will take care that you will get the right information Europe Africa Middle East Phone 49 89 4129 12345 customersupport rohde schwarz com North America Phone 1 888 TEST RSA 1 888 837 8772 customer support rsa rohde...

Страница 20: ... 7 Front Panel Connectors 24 2 2 Rear Panel Tour 25 2 2 1 Description of the Connectors 25 2 3 Putting into Operation 29 2 3 1 Unpacking and Checking the Instrument 30 2 3 2 Placing or Mounting the Instrument 31 2 3 3 Connecting the Instrument to the AC Supply 32 2 3 4 Starting the Instrument 32 2 3 4 1 Standby and Ready state 33 2 3 4 2 Start Display and Booting 33 2 3 4 3 Function Check 33 2 3 4...

Страница 21: ...al Diagram Blocks of the RF Section 55 3 4 Example of Setup 56 4 Manual Operation 63 4 1 Key Features 63 4 2 Display 68 4 2 1 Settings Displayed in the Header Section 69 4 2 2 Status Information and Messages 69 4 2 2 1 Status Information 69 4 2 2 2 Messages 69 4 2 2 3 Volatile messages 70 4 2 2 4 Permanent Messages 70 4 2 3 Info Window 70 4 2 4 Block Diagram 71 4 2 4 1 Function Blocks in the Block...

Страница 22: ...ialog 93 4 7 2 File Manager 94 4 7 2 1 Extensions for User Files 95 4 8 Legend of Front Panel Controls 98 4 8 1 Front Panel Key Emulation 99 5 Instrument Function 101 5 1 Overview of Instrument Functions 101 5 2 General Instrument Settings 103 5 2 1 Overview of General Instrument Settings 103 5 2 2 Default Instrument Settings Preset Key 104 5 2 3 General Configuration of Instrument Setup Key 105 5...

Страница 23: ... 5 2 5 2 Hardcopy Options 134 5 2 6 Messages Info Key 136 5 2 7 Help System Help Key 137 5 2 8 Storing and Loading Instrument Data File Key 138 5 2 8 1 File Menu 139 5 2 8 2 Storing Instrument Settings 139 5 2 8 3 Loading Instrument Settings 141 5 2 8 4 File Manager 142 5 3 Graphical Display Graphics 144 5 3 1 Graphics Settings Menu 145 5 3 2 Bar of Graphics Window 147 5 3 3 Signal Displays 150 5 ...

Страница 24: ...ewer 163 5 4 6 1 NRP Z Power Viewer Settings 164 5 4 7 NRP Z Level Control 169 5 4 7 1 NRP Z Level Control Settings 170 5 4 8 RF Level EMF 173 5 4 8 1 Overview of RF Level 173 5 4 8 2 RF Level Dialog 174 5 4 8 3 Power On EMF Settings 178 5 4 9 Automatic Level Control ALC 178 5 4 9 1 Automatic Level Control Settings 180 5 4 10 User Correction 181 5 4 10 1 User Correction Menu 182 5 4 10 2 Filling t...

Страница 25: ...Modulation I Q Mod Block 235 5 5 1 I Q Modulator 236 5 5 2 I Q Settings 237 5 5 2 1 General I Q Mod Settings 238 5 5 2 2 Impairments 239 5 5 2 3 I Q Swap and I Q Wideband 246 5 5 2 4 Analog Wideband I Q Input 247 5 6 Impairment of Digital I Q Signal and Noise Generator AWGN IMP Block 248 5 6 1 Impairments 249 5 6 1 1 Impairment Settings Menu 249 5 6 2 AWGN Noise Generator 257 5 6 2 1 AWGN Settings...

Страница 26: ...rview and Required Options 282 5 8 3 2 Modulation Types Custom Digital Mod 283 5 8 3 3 Coding Custom Digital Mod 287 5 8 3 4 Baseband Filter Custom Digital Mod 290 5 8 3 5 Conflicting Settings Custom Digital Mod 293 5 8 3 6 Custom Digital Mod User Interface 293 5 8 4 Arbitrary Waveform Generator ARB 323 5 8 4 1 ARB User Interface 326 5 8 4 2 Multi Segment Waveforms 348 5 8 4 3 Multi Carrier Wavefo...

Страница 27: ... using VXI 11 Protocol 402 6 2 3 3 Remote Control over LAN using Socket Communication 406 6 3 SCPI Command Structure 413 6 3 1 Syntax for Common Commands 413 6 3 2 Syntax for Device Specific Commands 414 6 3 3 SCPI Parameters 416 6 3 4 Overview of Syntax Elements 419 6 3 5 Structure of a command line 419 6 3 6 Responses to Queries 420 6 4 Command Sequence and Synchronization 421 6 4 1 Preventing O...

Страница 28: ...form and List Format 439 7 3 1 Tag Description 440 7 3 2 Creating a Waveform Manually 451 7 3 3 Creating an ASCII C List Manually 455 7 4 CALibration Subsystem 456 7 5 CLOCk Subsystem 459 7 6 DIAGnostic Subsystem 459 7 7 DISPlay Subsystem 461 7 8 FORMat Subsystem 463 7 9 HCOPy Subsystem 465 7 10 KBOard Subsystem 471 7 11 MMEMory Subsystem 472 7 11 1 File Naming Conventions 473 7 11 2 Extensions fo...

Страница 29: ...4 9 SOURce IQ Subsystem 637 7 14 10 SOURce IQ OUTput Subsystem 640 7 14 10 1 Analog I Q Outputs 640 7 14 10 2 Digital I Q Outputs 643 7 14 11 SOURce LFOutput Subsystem 647 7 14 12 SOURce LIST Subsystem 656 7 14 13 SOURce MODulation Subsystem 669 7 14 14 SOURce PGEN Subsystem 669 7 14 15 SOURce PHASe Subsystem 670 7 14 16 SOURce PM Subsystem 671 7 14 17 SOURce POWer Subsystem 674 7 14 18 SOURce PUL...

Страница 30: ... 727 9 1 2 Status information displayed to the left of the Info line 728 9 1 3 Status information displayed in the Info line 729 9 2 Error Messages 730 9 2 1 Volatile messages 730 9 2 2 Permanent messages 730 9 3 SCPI Error Messages 731 9 4 Device Specific Error Messages 731 A Hardware Interfaces 734 A 1 GPIB Bus Interface 734 List of Commands 736 Index 751 ...

Страница 31: ......

Страница 32: ...erations and an example of setup are described The manual includes also general information e g Safety Instructions Operating Manuals The Operating Manuals are a supplement to the Quick Start Guide Operating Manuals are provided for the base unit and each additional software option These manuals are available in PDF format in printable form on the Documentation CD ROM delivered with the instrument...

Страница 33: ...rm see ordering information in the data sheet Service Manual This Service Manual is available in PDF format in printable form on the Documentation CD ROM delivered with the instrument It describes how to check compliance with rated specifications on instrument function repair troubleshooting and fault elimination It contains all information required for repairing the instrument by the replacement ...

Страница 34: ... are enclosed by quota tion marks KEYS Key names are written in capital letters File names commands program code File names commands coding samples and screen output are distin guished by their font Input Input to be entered by the user is displayed in italics Links Links that you can click are displayed in blue font References References to other parts of the documentation are enclosed by quotati...

Страница 35: ...0 of this manual provides an overview of the generator functions and introduces the operating concept Detailed operating instruc tions and an overview of menus follow in chapter 4 Manual Operation on page 63 For all reference information concerning manual and remote control of the instrument refer to the online help system or its printed printable version A more detailed description of the hardwar...

Страница 36: ...ormation see chapter 5 2 3 General Configuration of Instrument Setup Key on page 105 HCOPY Opens the Hardcopy menu for configuring and starting printing For more information see chapter 5 2 5 Generating a Hard Copy of the Dis play on page 133 INFO Displays status messages error messages and warnings HELP Displays context sensitive help text 2 1 2 Standby LEDs and Standby Key The standby LEDs and t...

Страница 37: ...k diagram can be displayed in the foreground anytime with the DIAGRAM key Winbar with labelled softkeys Open menus are indicated by a labelled button in the Winbar The buttons determine the softkey functions for front panel control When a button or softkey is pressed the associated menu is displayed either in the foreground or minimized in the Winbar If required the WINBAR is covered by a row of b...

Страница 38: ...nterrupted to allow the user to make further settings Calculation is restarted by a keystroke and the modulation is switched on again after the calculation is completed 2 1 4 2 Display Keys The keys on top of the rotary knob and the keys below the numeric key pad arrange different windows on the display DIAGRAM Brings the block diagram to the foreground Active menus are minimized Active menus are ...

Страница 39: ...st the cursor is set on the first entry again MENU Calls the menu tree CLOSE Closes the active menu If the entry mode is active changes are cancelled If settings in this menu require acknowledgement by means of an Accept button a query is displayed asking whether the changes made should be cancelled HIDE Minimizes the active open menu The associated button in the Winbar remains visible REARR Adjus...

Страница 40: ...haracters if the key is pressed sev eral times in a row A a Toggles between uppercase and lowercase characters A B C D E F Enters hexadecimal values The letters assigned to the keys are automatically active when an entry field with a hexadecimal value is active INSERT Toggles between insert and overwrite mode see also chapter 4 4 4 Entering a Value on page 79 BACKSPACE Deletes the last character b...

Страница 41: ... and down arrow keys do the following In a numeric edit dialog box increase or decrease the instrument parameter In a list table window or dialog box scroll vertically LEFT RIGHT KEYS The left and right arrow keys do the following In an alphanumeric edit dialog box move the cursor forward and back In a list table window or dialog box scroll horizontally 2 1 7 Front Panel Connectors The RF and I O ...

Страница 42: ...section gives an overview of connectors on the rear panel of the instrument Each connector is briefly described and a reference is given to the chapters containing detailed information For technical data of the connectors refer to the data sheet Fig 2 2 Rear panel view 2 2 1 Description of the Connectors I OUT Q OUT Direct output or Differential non inverting output for analog I Q signal See also ...

Страница 43: ... Devices on page 36 DIGITAL IQ IN OUT Connector for the input output of a digital I Q signal from to an R S instrument like a signal generator analyzer or the R S EX IQ BOX The interface requires option R S SMBV K18 Digital Baseband Connectivity LAN CONNECTOR Ethernet interface For integrating signal generators in a network Remote control of signal generator Remote access to the signal generator F...

Страница 44: ...x sensors With the aid of the User Correction function a table with correction values for external test assemblies can be automatically determined e g for compensating the frequency response of cables The power sensors are connected by inserting the male connector To disconnect hold the connector by its sleeve Pulling on the sensor cable will not release the sensor con nector See also chapter 5 4 ...

Страница 45: ...llator on page 159 REF IN Input for external reference signal See also chapter 5 4 4 Reference Oscillator on page 159 OCXO Oven controlled reference oscillator option R S SMBV B1 The OCXO generates a very precise 10 MHz reference signal It needs some minutes of warm up time to reach its nominal frequency Refer also to the data sheet for detailed information AC SUPPLY AND POWER SWITCH When the R S ...

Страница 46: ... the fuses disconnect the power cord from the R S SMBV 2 3 Putting into Operation This section describes the basic steps to be taken when setting up the R S SMBV for the first time Risk of injury and instrument damage The instrument must be used in an appropriate manner to prevent electric shock fire personal injury or damage Do not open the instrument casing Read and observe the Basic Safety Inst...

Страница 47: ...or details refer to the safety instructions at the beginning of this manual EMI impact on measurement results Electromagnetic interference EMI can affect the measurement results To avoid any impact make sure that the following conditions are met Use suitable double shielded cables Do not use USB connecting cables exceeding 1 m in length Use only USB devices that remain within the permissible EMI l...

Страница 48: ...e Instrument The R S SMBV is designed for use under laboratory conditions either on a bench top or in a rack using a rack adapter kit order number see data sheet Bench Top Operation If the R S SMBV is operated on a bench top the surface should be flat The instrument can be used in horizontal position standing on its feet or with the support feet on the bottom extended Risk of injury at the operati...

Страница 49: ...vered with the instrument Note The instrument is in compliance with safety class EN61010 1 Connect the instrument only to a socket with earthing contact 2 3 4 Starting the Instrument The R S SMBV comes with or without a power switch depending on the design of the otherwise technically equivalent power supply unit Switching off the AC power You can leave the AC power on permanently to preserve your...

Страница 50: ...ED is on The standby power only supplies the power switch circuits and the oven controlled crystal oscillator to keep it at its oper ating temperature In this state it is safe to switch off the AC power and disconnect the instrument from the power supply 2 3 4 2 Start Display and Booting The instrument boots the operating system starts the instrument firmware and automat ically performs a selftest...

Страница 51: ...tings belonging to a digital standard or associated with one dialog Most of the dialog boxes provide a special Set to Default button that resets directly the settings associated to the corresponding dialog e g all digital modulation settings in the Custom Digital Mod dialog These settings are identical to those which are called up using the PRESET key Preset the instrument to a predefined state Th...

Страница 52: ...p Gui Update Setup menu Display and keyboard settings Setup menu User defined instrument states can be stored and called up in the File dialog 2 3 5 Shutting Down the Instrument To shut down the R S SMBV proceed as described below Risk of losing data If you switch off the running instrument using the rear panel switch or by disconnecting the power cord the instrument loses its current settings Fur...

Страница 53: ... same type and rating 2 4 Connecting External Accessories The equivalent USB ports on the front and or rear panel of the R S SMBV can be used to connect a variety of accessories In addition the instrument provides interfaces for network integration see chapter 2 6 Setting Up a Network LAN Connection on page 38 2 4 1 Connecting USB Devices The USB interfaces on the front and optionally rear panels ...

Страница 54: ...evice is made available as a new drive usb The name of the drive is manufacturer dependent Connecting a keyboard The keyboard is detected automatically when it is connected The default keyboard layout is English US Use the Setup Keyboard Settings dialog to configure the keyboard properties Connecting a mouse The mouse is detected automatically when it is connected 2 5 Linux Operating System The in...

Страница 55: ...e flash memory are accessed via the File Manager Accsessing the File System The instrument also supports two standard methods to access the file system form a remote client FTP file transfer protocol File sharing according to the SAMBA SMB server message block protocol Both methods allow the access to the folder var user share Default password The FTP and SAMBA file access use the user instrument ...

Страница 56: ... to the instrument A non dedicated network Ethernet connection from the instrument to an existing network made with an ordinary RJ 45 network cable The instrument is assigned an IP address and can coexist with a computer and with other hosts on the same net work A dedicated network connection Point to point connection between the instrument and a single computer made with a crossover RJ 45 network...

Страница 57: ...ss information automatically This means that it is safe to establish a physical connection to the LAN without any previous instrument configuration Risk of network errors Connection errors can affect the entire network If your network does not support DHCP or if you choose to disable dynamic TCP IP configuration you must assign valid address information before connecting the instrument to the LAN ...

Страница 58: ...puter Names Alternatively to the IP address each PC or instrument connected in a LAN can be accessed via an unambiguous computer name Each instrument is delivered with an assigned computer name but this name can be changed Querying and changing a computer name 1 Press the Setup key and select Network Settings The computer name is displayed under Hostname 2 Press the Setup key select Protection and...

Страница 59: ...computer Web Browser e g Windows Internet Explorer or Mozilla Firefox see chapter 2 7 1 Using a Web Browser for Remote Access on page 43 required no no Ultr VNC for PCs with Linux Unix or Windows operating system see chapter 2 7 2 Remote Access via Ultr VNC on page 44 required required VNC Viewer required When the connection is set up with Ultr VNC direct control on the instrument is possible whil...

Страница 60: ...tance To remote access the instrument via Web browser 1 Connect the instrument and the remote computer to a LAN see chapter 2 6 1 Con necting the Instrument to the Network on page 39 2 Instal the Java Runtime Environment JRE on the remote computer 3 Type the instruments IP address in the address field of the Web browser on your PC e g http 10 111 11 1 The VNC Authentication screen appears 4 Enter ...

Страница 61: ...C application is enabled on the instrument any user in the network who knows the computer name and login data can access it To prevent this make sure that the VNC server service on the instrument is disabled Setting up a VNC connection 1 Connect the instrument and the remote computer to a LAN see chapter 2 6 1 Con necting the Instrument to the Network on page 39 2 Install the Ultr VNC application ...

Страница 62: ...t Control The direct control of the instrument is not disabled and the instrument can be controlled from the front panel and via the remote computer alternately Installing the Ultr VNC application 1 Download the program from the internet and copy it to a directory that can be accessed 2 On the instrument shut down firmware using the ALT F4 key combination 3 Double click on the setup file to start ...

Страница 63: ...the Additional Task Panel enable all entries A successful installation is indicated by a message At the same time a warning is displayed stating that a password must be set 4 Select OK The Default Local System Properties panel opens Remote Access via an External Controller ...

Страница 64: ...r VNC program form internet and follow the installation instruc tions Only the program component VNC Viewer is required Note The VNC Viewer program is included in the download for the installation of the Ultr VNC program on the signal generator if Full installation was selected in the Select Component panel In this case the program ultr vncviewer exe can be copied to the Windows PC 2 Install VNC V...

Страница 65: ...Setting up the VNC connection on the Windows remote computer 1 Start VNC Viewer program component on the PC select VNC Server and enter IP address of the instrument 2 To initialize the connection select Connect A message requesting the password appears 3 Enter the password as defined in the Default Local System Properties panel of the Ultr VNC program and select Log On The connection is establishe...

Страница 66: ...rnal Windows PC close the VNC Viewer program The connection is terminated The color of the VNC icon in the status bar of the instrument changes A message on the external PC indicates the disconnection Disabling Remote Access via Ultr VNC The VNC connection can be disabled by removing the program on the instrument or by deactivating the VNC Server service 1 Remove the VNC program a Press the Window...

Страница 67: ...e 52 and chapter 3 3 RF Section on page 54 respectively The operating concept of the R S SMBV employs the following three ways of instru ment control Manual operation Remote control Remote access Manual Operation The R S SMBV can be entirely operated from the front panel Peripherals such as mouse or keyboard can be connected but are not essential The R S SMBV is equipped with an intuitive user int...

Страница 68: ...s displayed when the INFO CTRL I key is pressed Additional information on entries can be reques ted from the help system The history function permits display of all messages Assistants simplify the completion of tables After data entry in the assistant the table is modified only after the Accept button has been pressed Pressing the Accept button also stores the assistant data For an introduction i...

Страница 69: ... R S SMBV data sheet and the R S SMBV configuration guide Up to date information is available at R S SMBV homepage on the internet http www2 rohde schwarz com product smbv100a html Baseband generator option R S SMBV B10 The generator produces baseband signals It contains modules for real time signal gen eration and an arbitrary waveform generator ARB The option Baseband Generator contains real tim...

Страница 70: ...rectly to the digital interface If digital I Q output is off the instrument converts the signal to an analog I Q signal and routes it to the analog I Q output and to the I Q modulator of the RF path Pure noise is also provided at the analog outputs or can be forwarded to the I Q modulator Additional White Gaussian Noise option R S SMBV K62 Additive white noise which may be required for instance fo...

Страница 71: ...s the active function s of the block on or off AWGN IMP A block This block is displayed only if a baseband generator R S SMBV B10 B50 B51 is instal led In this block digital I Q impairments for the baseband path can be set With the aid of the software for AWGN generation option R S SMBV K62 an additive noise signal can be produced AWGN and impairments can be activated independently of each other i...

Страница 72: ... or I Q swap is active I Q modulation is switched on or off with the TOGGLE ON OFF key Note An I Q modulator provided in the R S SMBV is automatically activated when a connected baseband source is switched on The I Q modulator can also be separately switched on and off select the I Q Mod block and press the TOGGLE ON OFF key This permits the following configuration to be obtained with a single pat...

Страница 73: ...ate and display a simple QPSK modulated signal Configuring and displaying a QPSK modulated signal To generate and display a QPSK modulated signal proceed as follow 1 Activate default preset state Press the PRESET key to set a defined instrument state 2 Select and activate digital modulation a Turn the rotary knob and select the Baseband A block Example of Setup ...

Страница 74: ...rotary knob to open the menu where the digital modulation can be selected different modulation modes are available depending on the options installed c Turn the rotary knob and highlight Custom Digital Mod Press the rotary knob to open the Custom Dig Mod dialog Example of Setup ...

Страница 75: ...ress the rotary knob to allow editing and enter the preffered symbol rate with the aid of the numeric key pad and the unit keys e Turn the rotary knob to select parameter Coding Press the button to open the selection list Turn the rotary knob to select Off and press the knob to activate the selected item Example of Setup ...

Страница 76: ...g Manual 1407 6062 32 08 f Use the rotary knob in the same way to set Modulation Type QPSK and Fil ter Root Cosine with Roll Off Factor 0 3 g Finally select State and press the rotary knob to switch on the digital modula tion Example of Setup ...

Страница 77: ...ntry in the Winbar indicates that the Custom Dig Mod menu is still open in the background To display the menu in the foreground press the softkey below the button in the Windbar Press the HIDE key to minimize the menu again The I Q Mod block is automatically activated The RF A Mod is not yet active which means that no RF signal is output 3 Set frequency and level and activate RF signal Example of ...

Страница 78: ...e the entry by press ing a unit key b Press the LEVEL key and enter the level settings in the same way c Press the DIAGRAM key to display the complete block diagram d Turn the rotary knob to select the RF A Mod block Press the TOGGLE ON OFF key to activate the RF A Mod block The QPSK modulation signal is now present at the RF output 4 Select graphics display of I Q signal a Turn the rotary knob to...

Страница 79: ...Getting Started R S SMBV100A 62 Operating Manual 1407 6062 32 08 b Select State On with the rotary knob to activate display of the I Q diagram Example of Setup ...

Страница 80: ...ossible and at the same time gives a permanent overview of characteristics of the generated signal and of the current instrument state Numerous online help func tions support user settings Block diagram The block diagram is the core of the operating concept A graphics display shows the current configuration and the signal flow in the form of a block diagram All graphical elements can be accessed f...

Страница 81: ...e employed inputs and outputs are also shown Menu tree The menu tree can be opened and closed with the MENU CTRL M key The menu tree is organized in the same way as the directories under Windows The function blocks correspond to the first directory level the menus to subdirectories Operation corresponds to the Windows concept To offer the user a familiar environment operation is very similar to op...

Страница 82: ...ther i e none of the dialogs requires that settings in other dialogs be completed before it can be closed This ensures flexible operation at all times Winbar The Winbar gives an overview of menus and simplifies their access The menus are displayed on top of the block diagram but they can be hidden with the aid of the HIDE CTRL H key i e displayed in the form of a button in the Winbar at the lower ...

Страница 83: ...sible range the next permissible value is automatically set and a message is output Context sensitive help Context sensitive help for each parameter can be called with the HELP or F1 key Comprehensive online help Each help page is part of a comprehensive online help function which can be called by means of an index a content tree or the Previous Next buttons Info line with messages for indication ...

Страница 84: ...ally selected for processing Graphics editor for definition of control signals Control signals are also graphically configured Graphical display of output signal in a diagram The output signal can be graphically displayed in a number of diagrams This allows a fast check of signal characteristics Zoom functions and the insertion of a reference trace permit in depth evaluation without an external an...

Страница 85: ...eters and reports the current state with status error and warning messages The block diagram shows the instrument configuration the signal characteristic as well as the inputs and outputs used and permits interactive operation via graphics elements Active menus and graphs are displayed on top of the block diagram Winbar with labelled softkeys for menu display The block diagram in the figure below ...

Страница 86: ... 4 8 1 Overview of RF Level on page 173 4 2 2 Status Information and Messages The status information and messages are displayed in the header section of the screen The messages differ with respect to their importance errors warnings info and the time of their appearance brief and permanent messages They require different treatment by the user Further information on all messages can be called in th...

Страница 87: ... that impairs further instrument operation e g a hardware fault The error signalled by a permanent message must be eliminated before correct instrument operation can be ensured The message is displayed until the error is eliminated It covers the status display in the info line After error elimination the message automatically disappears and is also recor ded in the history These messages can be re...

Страница 88: ...em ERRor ALL on page 712 Each time a SYST ERR ALL query is sent the error queue is returned and at the same time cleared History Calls the list of all messages that have occurred since instrument switch on The most recent messages are displayed at the top of the list When the button is pressed again the list of current messages is displayed SCPI command SYSTem ERRor NEXT on page 714 or STATus QUEu...

Страница 89: ...tatus information is displayed below the check box It is different for the different blocks Pressing the rotary knob front panel or the Config button mouse opens the asso ciated setting menu In all function blocks where the signal flow can be influenced the top menu level for setting signal routing parameters is offered Example Baseband block In this block the digital modulation signal the digital...

Страница 90: ...different colors depending on their function The baseband signal is indicated by a three line arrow the I and Q components of the signal by a single line arrow Connections are indicated by a solder point Black is used for the generated signal Green is used for control signals The signal flow is configured in the individual menus User interfaces are configured in the Setup Global Trigger Clock Exte...

Страница 91: ...es is described in chapter 4 3 Accessing Dia logs on page 75 the setting of parameters in chapter 4 4 Setting Parame ters on page 76 The menus are in Windows format The menus differ in details depending on their function but they consist of the same main elements Each menu consists of a menu header and one or more menu areas with various fields for setting parameters The header line contains the n...

Страница 92: ...analogous to menu operation The menu and the individual graphical displays are described in chapter 5 3 Graphical Display Graphics on page 144 4 3 Accessing Dialogs The MENU CTRL M key opens the complete menu tree Selecting a functional block and pressing the ENTER key opens the menu associated with this block An alternatively way to access a dialog is to use the Winbar buttons or front panel soft...

Страница 93: ...and the block diagram The button that was active last in the Winbar is highlighted Closing an active menu Press the CLOSE key to close an active menu Tip If the cursor is at the highest menu level you can also use the ESC key to close the active menu Accessing the header area Press the FREQ CTRL F and LEVEL CTRL L keys to activate the Frequency or Level entry fields in the header area Keyboard Sho...

Страница 94: ...opies can be made These menus can only be called with the SETUP CTRL E FILE CTRL S and HCOPY CTRL Y keys Frequency and level are directly set in the header area of the display using the FREQ and LEVEL keys Specific settings can also be made directly in the block diagram e g activating a function block by means of the TOGGLE ON OFF CTRL T key or switching the RF output on and off with the aid of th...

Страница 95: ...ve Quits the edit mode if the edit mode is active Switches between different entry fields of a menu Shifts the entry cursor from the header display to the previously active menu or to the previously highlighted block in the block diagram if no menu is active Shifts the cursor from a function block in the diagram to the first item in the Winbar If no menus are open the current cursor position remai...

Страница 96: ... values can either be newly entered or the existing value can be changed Incorrect entries are cleared with the BACKSPACE key Entering a new numerical value 1 Select the parameter 2 Press a numeric key to activate the editing mode The previous value is cleared and the new value can be entered Editing a value in the insert mode default setting 1 Press the rotary knob Enter to activate the editing m...

Страница 97: ...anged in the insert mode see example or in the overwrite mode 1 Select the paramter and activate the editing mode 2 Set the cursor to the left of the alphanumerical value using the LEFT RIGHT arrow keys Tip If hexadecimal values are to be entered the numeric front panel keys are auto matically changed to hexadecimal values 3 Click on an alphanumeric key to insert a new alphanumerical value Termina...

Страница 98: ...sequently change a unit i e after the entry has been terminated and when the editing mode is not active use one of the following alternatives 1 Press a UNIT key on the front panel 2 Select Unit in the selection field next to the parameter value The value remains unchanged but the display is automatically adapted to the new unit i e the value is recalculated to suit the new unit The new unit is ind...

Страница 99: ...ackground as an indication that the currently displayed values do not represent the target signal To confirm these settings select the Accept button Confirming parameters with On Off state Most of the instrument functions with enabled and disabled states are calculated and effective only after this functions have been enabled However there are functions like the frequency variation of the referenc...

Страница 100: ...red 1 Press the ESC key A confirmation query is displayed 2 Confirm with OK to abort the changes Select Cancel to return to the dialog The previous selected settings are displayed Restoring values after an extended calculation has been started Calculation and setting might require different period of time Many settings are made without noticeable calculation times such operations are indicated by ...

Страница 101: ...sts 1 To access a list editor and open an existing data list for editing use the cursor keys to select the associated button Edit User Correction Data or Edit List Mode Data if available in the individual menu The selected list is displayed and the cursor marks the first row of the Frequency Hz column If no list has been selected a blank list of only one row is displayed 2 Press the LEFT RIGHT arr...

Страница 102: ...create an empty data list select RF List Mode List Mode Data New List or respectively RF User Correction User Cor Data New User Correction Data and enter the file name of the new data list 2 To open the data list for editing select the associated button Edit User Correction Data or Edit List Mode Data in the individual menu Edit the list and save it under a new name 4 5 2 Working with Data Editor ...

Страница 103: ... key Enter the bit position in the GoTo Offset entry field by means of the numeric keys and confirm the entry The cursor marks the bit at the selected position 5 To copy and paste any range of bits at any position in the list a Use the the arrow keys to mark the start bit of the selection b Select the Start Select button and use the the arrow keys to mark the selection c Click the Copy button d Na...

Страница 104: ...or of the GSM EDGE dialog as an example The upper area displays the signal for which the marker signals are to be defined On the left side the available signals marker and control signals are listed and colour coded Auxiliary functions are offered in the lower editor area e g presetting for the ramps in the marker signal cursor positioning by entering the bit position and possible editing by means...

Страница 105: ... adjusted automatically 3 Configure the control and marker signals see Handling of Ramps on page 88 4 Define length of control list Custom Dig Mod only Select the Total List Length entry field and press the ENTER key Enter the length by means of the numeric keys and confirm the entry The control list length is defined 5 Zoom displayed range Custom Dig Mod only in long control lists To zoom the dis...

Страница 106: ...ing ramp can be shifted to any positions The transitions are adjusted accord ingly Use the arrow keys to move the cursor to the ramp position the cursor changes colour Press the ENTER key The cursor again changes colour The ramp will now be shifted by means of the cursor Press the ENTER key The ramp will be set at the current position The ramp transition depends on the status high or low of the co...

Страница 107: ... System The R S SMBV is equipped with a context sensitive help function A help page is avail able for each parameter and can be called any time during instrument operation Compiled online help systems are also available for all functions of the R S SMBV on the CD ROM supplied with the instrument This help program can be called on any con troller with Internet Explorer version V4 0 and higher Calli...

Страница 108: ...he first characters of the topic you are interested in The entries starting with these characters are displayed 3 Press the ENTER key to change the focus 4 Use the UP DOWN keys to navigate and select the suitable keyword 5 Press the ENTER key to display the help topic The corresponding help topic is displayed Closing the help window Press the HELP F1 key 4 7 File Management The R S SMBV uses files...

Страница 109: ...frame setting of the GSM EDGE standard can be loaded and cur rent setting saved to the specified file Lists Lists e g user correction lists can be loaded They can be generated either exter nally or internally For internal generation a new list must be created in the File Select dialog which will then be edited in the list editor of the individual menu Complex modulation and control data User data ...

Страница 110: ... File Select Dialog The Save Recall dialaog displays the available drives and directories In the upper part Recent Data Sets the files last used are listed The available drives and directories and the files of the selected directory are displayed The currently selected path is displayed above the window Only the relevant files without file extensions are displayed If the area is opened several tim...

Страница 111: ...e File Name field Select the directory to which the file is to be saved and then select the Save button 5 Create a new file To create a new file use the Save Settings functionality i e specify file name and directory and save the file The created file is empty it must be filled with the necessary values in the individual editor 4 7 2 File Manager The File Manager allows general file management suc...

Страница 112: ...ve a file select the file and press the Cut button Mark the directory to which the file is to be moved and select the Paste button If the target directory already contains a file with the same name a confirmation query is displayed to confirm overwriting of this file Perform the similar steps and cut copy rename delete the file Tip The operation corresponds to the Windows concept 4 Creating a new ...

Страница 113: ...r mapping vam User Filter Digital modulation user filter vaf NRP Settings Settings NRP Settings nrp EX IQ Box User Settings EX IQ Box User Defined Settings iqbox Fading Fading Fading data fad GSM EDGE Settings GSM EDGE settings gsm Slot User defined slot data gsm_slu Frame User defined frame data gsm_fu Slot Higher symbol rate slot gsm_hslu Frame Higher symbol rate frame gsm_hfu Bluetooth Bluetoot...

Страница 114: ...ned IQ File iqw GPS Settings Complete setting of the GPS A GPS menu gps Settings GPS Almanac Settings txt alm al3 Settings GPS Waypoints File txt Settings GPS Generated Almanac File rs_al rs_yuma Settings GPS Ionospheric File rs_ion Settings GPS Navigation Data rs_nav Settings GPS UTC File rs_utc rs_acq FM Stereo Settings Complete setting of the FM Stereo menu fmstereo Settings FM Stereo Group Typ...

Страница 115: ...t Sets the cursor with the rotary knob Pressing the rotary knob Enter Pressing the rotary knob confirms an entry it has the same function as the ENTER key Arrow keys Arrow keys Moves the cursor 1 dB m ALT F12 Confirms entries in the base unit and values without a unit Selects dBm for the RF level and dB for level offset and level step width Enters a period decimal point Enters a special char acter...

Страница 116: ...L O Switches modulation on off MOD OFF is indicated in the status line TOGGLE CTRL T Switches a block or parameter on off Toggles between the different possibilities of setting a selection parameter PRESET CTRL P Restores a defined basic instrument setup REARR CTRL A Adjusts the size of the active menu to use the whole height of the dislay RECALCULATE CTRL C Starts recalculation of the signal RF O...

Страница 117: ...Manual Operation R S SMBV100A 100 Operating Manual 1407 6062 32 08 Legend of Front Panel Controls ...

Страница 118: ...cks I Q Mod and AWGN IMP The remaining and largest part of the chapter describes the functions used for the inter nal generation of the signals in the baseband these functions are provided in the Base band block The general instrument settings include various functions such as Setting a defined basic setup using the PRESET key see chapter 5 2 2 Default Instrument Settings Preset Key on page 104 Sw...

Страница 119: ...on page 249 Adding noise see chapter 5 6 2 AWGN Noise Generator on page 257 The baseband signal is available at the I O outputs Output of the baseband signal see chapter 5 6 3 Output of the Baseband Signal I Q Out on page 264 Digital I Q Output see chapter 5 7 Digital I Q Output Settings on page 267 The R S Signal Generator offers various possibilities for generating digital modulation signals in ...

Страница 120: ...DVB T DMB 5 2 General Instrument Settings 5 2 1 Overview of General Instrument Settings This section describes the settings which do not directly affect signal generation Most of these settings can only be accessed by means of menus which are opened using keys or key combinations on the external keyboard or keys on the front panel key emulation This does not apply to the graphical representation o...

Страница 121: ...ned instrument states can be stored and called up in the File menu Resetting the instrument to the factory state is possible with the Factory Preset function Preset Presets all parameters and switching states The following list gives an overview of the presets for the most important generator set tings The other presets can be found in the preset tables of the individual menus and the information ...

Страница 122: ...led up with the FILE key and is therefore described in the section on this key see chapter 5 2 8 Storing and Loading Instru ment Data File Key on page 138 The Global Trigger Clock External Inputs dialog is also available in all modulation menus of the Baseband function block where it can be called up with the Global Trigger Clock Settings button in the corresponding Trigger Marker Clock dialog See...

Страница 123: ...ith external measuring equipment are described in the Service Manual supplied SCPI command CALibration ALL MEASure on page 456 Adjust Synthesis Performs all adjustments which affect the frequency SCPI command CALibration hw FREQuency MEASure on page 457 Adjust Level Performs all adjustments which affect the level The acquired correction values improve the settling time and the signal quality SCPI ...

Страница 124: ...rdware Config In the Hardware Config dialog the installed assemblies together with their variants and revision states can be displayed for servicing purposes To open the Hardware Config dialog select System and press the SETUP or MENU key Section Counter in the upper part of the menu shows the Operation Time in hours and the number of power on Power On Counter The second part of the menu is a tabl...

Страница 125: ...are and software options Software options purchased at a later stage can be activated with a keycode The acti vation code is supplied with the software option How to install options is described in Chapter 4 of the Service Manual supplied with the instrument The installation of hardware options purchased at a later stage is also described in Chap ter 4 of the Service Manual supplied with the instr...

Страница 126: ...e This home page always offers the latest information on your signal gen erator e g also on changes of the firmware update procedure SCPI command n a Hardware Options Software Options The tables in the sections Hardware Software and WinIQSIM2 list the installed hardware and software options Option Short name of option Designation Name of Option Licenses optional Number of licenses SCPI command OPT...

Страница 127: ... S Signal Generator is equipped with an older firmware version a firmware update prior to enabling the software option may be required The information on the valid firmware versions for the purchased software option is provided together with the option The firmware update is described in the service manual chapter 4 on CD ROM supplied with the instrument Example Moving a portable license This exam...

Страница 128: ...ard file manager dialog opens Enter a user specific file name and save the exported license key e g k40_portable_key_to_move xml 4 In the browser select Manage Licenses Move Portable License Select License from file and select the exported license key Check the selection create the deactivation key and save it to file 5 On the source instrument select Setup Manage License Keys Import License Keys ...

Страница 129: ...ent confirms the deactivation of the option The deactivation key response is exported under the selected name e g K40_portable_decat txt 7 In the browser go the step Manage Licenses Move Portable License Install Deactivation Key from file and enter the deactivation response of the instrument The license is deactivated for the source instrument General Instrument Settings ...

Страница 130: ...tructure stock number serial number checksum Enter License Key Type here the license key provided with the option For license keys delivered as a file use Import License Key from File Import License Key from File Opens a dialog for selecting the file with the license key Use this function also to import the deactivation key file generated by the R S License Manager online tool see example Moving a...

Страница 131: ...software option R S Signal Generator Kxy K2xy One waveform packages license per waveform is required Once registered license can not be moved to another instrument Note One waveform package licence per segment is required for the registration of a multi segment waveform Number of Licenses Waveforms Displays the number of the available and used R S Signal Generator K200 licenses Select Wave form Op...

Страница 132: ...m Packages 5 2 3 5 Gui Update The Start Stop Gui Update dialog provides the possibility to switch off update of the displayed parameters in order to increase speed for certain settings The indicated values are not updated and may therefore differ from the intern used val ues On Off GUI Update Switchs on off update of the displayed parameters Switching off the update of the displayed parameters inc...

Страница 133: ...selected Button Run Update starts the update If the update is interrupted for example by acci dently pulling off the sensor selection Rescue is offered to restart the update process Prerequisite is that no other sensor is connected to the instrument The procedure is as follows Do not reconnect the sensor but keep it ready to be connected Select Rescue in the left sensor selection field Activate Ru...

Страница 134: ...elftest is a protected test procedure which can be accessed if protection level 1 is disabled The protection dialog is called in the Setup menu see chapter 5 2 3 15 Protection on page 127 The following tests are only available via remote control TEST hw DIRect on page 719 Selftest Performs a selftest on all installed hardware options A list of the performed tests cases and the result of each of th...

Страница 135: ...ntal changes this parameter is protected It can be accessed with protection level 1 chapter 5 2 3 15 Protection on page 127 SCPI command SYSTem DATE on page 711 Time Indicates the time in the format hour minute second In order to prevent accidental changes this parameter is protected It can be accessed with protection level 1 see chapter 5 2 3 15 Protection on page 127 SCPI command SYSTem TIME on ...

Страница 136: ...tings like settings about the general network environment and specific identification of the computer in the network as well as an indication whether the instrument is connected to the network or not Network Status Indicates whether the instrument is connected to the network or not SCPI command n a Hostname Enters the individual computer name of the R S Signal Generator Note The computer name can ...

Страница 137: ...k IPADdress on page 709 Subnet Mask Displays the Subnet mask To enter the Subnet mask manually select Static Address Mode This number is used together with the IP address to identify the network segment the instrument is in SCPI command SYSTem COMMunicate NETWork IPADdress SUBNet MASK on page 709 Default Gateway Displays the IP address of the default gateway To enter the default gateway manually s...

Страница 138: ...rier signals and all digital standards These data sources are available for digital modulation Custom Digital Modulation The instrument trigger setting influences all sweeps and is effective in the List mode Threshold Trigger Clock Input Sets the high low threshold in volts for the trigger and clock signal inputs of the baseband section The setting affects the TRIGGER input and the CLOCK IN OUT co...

Страница 139: ...ting affects the INST TRIG input BNC connector at the rear of the instrument Positive The rising edge of the trigger signal is active Negative The falling edge of the trigger signal is active SCPI command SOURce INPut TRIGger SLOPe on page 636 Clock Input Slope Sets the polarity of the active slope of an externally applied symbol clock pulse This setting affects the CLOCK input BNC connector SCPI ...

Страница 140: ... length of the cable used to connect the CLK OUT and CLK IN connectors For the first slave in the chain the value represents the cable length between the master and the first slave for the second slave the cable length to the first and to the second has to be defined etc SCPI command SOURce INPut DELay CLENgth ch on page 637 5 2 3 13 Display Keyboard Settings In the Display Keyboard Settings menu ...

Страница 141: ... the display lamp is shut off when no entries are made SCPI command DISPlay PSAVe HOLDoff on page 463 Layout Keyboard Selects the keyboard layout for the selected keyboard language The assignment of some keys depends on the selected layout and language SCPI command KBOard LAYout on page 472 KBOard LANGuage on page 472 5 2 3 14 Remote Channel Settings The Remote Channel Settings dialog provides acc...

Страница 142: ...at is retrieved with query IDN If required use the parameter Mode and IDN String to change this string As any other parameter the remote control command set can also be changed remotely by means of the SCPI command SYST LANG However this remote control command is enabled only in the instrument s specific SCPI command set i e it is possible to change the command set remotely from the original one S...

Страница 143: ...ng can be entered e g to provide individual identification for each generator like MY_R S SMBV for instance SCPI command IDN OPT String Indicates the option string of the instrument as queried with common command OPT If a User Defined Identification Mode is selected a user defined option string can be created additionally to the automatically created one SCPI command OPT GPIB channel address Sets ...

Страница 144: ... command GTL via the remote control interface with the key combination CTRL Q SCPI command GTL 5 2 3 15 Protection This Protection dialog provides access to the unlocking of different protection levels To open this dialog use the SETUP or MENU key under Protection After the instrument has been switched on the protection levels 1 to 5 are automatically activated To deactivate the protection the cor...

Страница 145: ...ords and mass storage security set tings To open this menu use the SETUP or MENU key under Protection The menu is divided into the password sections and the security settings section In the password section the passwords for securing a controlled access to the instrument are defined and changed A change of passwords for the operating system and security password requires the entry of the old and n...

Страница 146: ...ord may contain decimal characters only SCPI command n a Confirm Password User Password Enters the new password for conformation The new password is only valid after the Change Password button is pressed SCPI command n a Change Password User Password Changes the password accordingly SCPI command n a Old Password Security Password Enters the currently used security password The default password is ...

Страница 147: ...rface It is not possible to access the instrument via LAN while the LAN connection is disabled The setting requires the entry of the security password and is only accepted after the Accept button is pressed SCPI command n a Annotation Frequency Enables disables the display of the currently used frequency in the header of the instru ment The setting requires the entry of the security password and i...

Страница 148: ...t button is pressed To enable the keyboard type the security password on the external keyboard or use the SYST KLOC OFF command over remote control SCPI command SYSTem KLOCk on page 715 Security Password Enters the password that is required to enable or to disable the settings protected by a security password Default is 123456 Note It is highly recommended to change the default security password b...

Страница 149: ...gular preset by means of the PRESET key a Factory Preset resets also the following values Reference frequency settings Ref Oscillator menu Power on settings Level EMF menu Network settings including hostname Setup menu Remote Channel settings including GPIB address Setup menu Start Stop Gui Update Setup menu Display and keyboard settings Setup menu To maintain security password settings and all se...

Страница 150: ... switches the instrument from remote control to manual control The current command must be fully processed before the mode is switched otherwise the instrument switches immediately back to remote control If the REM LLO status message is displayed the instrument can be switched from remote control to manual control by means of remote control only e g with the Visual Basic command CALL IBLOC generat...

Страница 151: ...ers are available in File Options on page 135 Automatic Naming Activates deactivates automatic generation of the file name Automatic naming is con figured in the Options submenu see File Options on page 135 SCPI command HCOPy FILE NAME AUTO STATe on page 471 File Info Indicates the file name The file name can be entered either manually via the file manager button File or generated automatically Au...

Страница 152: ... deactivated activated separately to individu ally design the file name The resulting file name is indicated Path Opens the Select Hard Copy Destination Path dialog to select a path for storing the hardcopy Note For selecting the destination path a file name must be entered as well Otherwise the error message The name of a list may not be empty is displayed and the selection will be canceled Direc...

Страница 153: ...utomatically generated file name Note On initially switching on the device the number will be reset to the lowest possible value Starting with number 0 the output directory will be scanned for already existing files As long as files with the same name are existing the number will be increased by 1 The number will be automatically set to a number so that the resulting file name will be unique withi...

Страница 154: ...evious Next links allow scroll through the help pages The sequence of the described functions corresponds to their position in the menus Back button The Back button calls up the page last viewed Contents in the navigation panel The contents list is used to open the individual help pages It has a hierarchical struc ture The highlighted line indicates where the currently displayed page is within the...

Страница 155: ...ttings e g a list of user correction data a reference to this list is stored not the list itself The list is reactivated when the associated settings are loaded but the list may have been modified or deleted in the meantime or may not be available on a different instrument If the list has been modified the new entries will be used An error message appears if an attempt is made to access a non exis...

Страница 156: ...nu for calling up a stored instrument setting see chap ter 5 2 8 3 Loading Instrument Settings on page 141 5 2 8 2 Storing Instrument Settings If Save is selected under Select Operation the File menu provides options for storing the current instrument setting in a file Recent files Displays the files last used SCPI command n a Directory Selects the directory in which the file is to be stored The w...

Страница 157: ...test setups e g while analyzing the generated WiMAX signal with R S FSQ it is required to disable the fast save option Note This function is not affected by the Preset function SCPI command SOURce hw BB DM SETTing STORe FAST on page 582 Refer to the descriptions of the firmware options for the correct syntx of the corresponding SCPI command Save Immediate x Stores the current instrument setting in...

Страница 158: ...cted file window lists all the files in this directory SCPI command MMEMory CDIRectory on page 478 File List Selects the file with the desired instrument configuration SCPI command MMEMory CATalog on page 477 Exclude Frequency The current frequency is retained when a stored instrument setting is loaded SCPI command SOURce hw FREQuency CW FIXed RCL on page 628 Exclude Level The current level is ret...

Страница 159: ...en deleted in the meantime an error message appears when the instru ment setting is loaded If the list has been overwritten in the meantime the new entries will be used A message appears if no instrument configuration is stored in this memory SCPI command RCL on page 436 5 2 8 4 File Manager The File Manager dialog provides all the functions required for file management Direc tories can be created...

Страница 160: ...ting the file into a different directory the original file name is kept SCPI command MMEMory COPY on page 478 Paste Pastes the file that has been copied or cut before SCPI command n a Rename Renames the selected file or directory The new name can be entered in the New File name dialog SCPI command MMEMory MOVE on page 481 Delete Deletes the selected file Before the file is deleted a message appear...

Страница 161: ... reference curves makes it possible to compare various signals i e by comparing the CCDF Complementary Cumulative Distribution Function with different channelization codes or the spectra if different filter parameters are selected The displayed signal segment can be influenced by selecting the trigger that defines the time for recording to start With automatic triggering the signal is tapped at th...

Страница 162: ...dows State Activates the selected graphical display After activation the diagram selected with Mode is displayed in the block diagram At the bottom of each graphics window there are several buttons for freezing and zooming the display and for activating a reference curve For more information see chapter 5 3 2 Bar of Graphics Window on page 147 SCPI command SOURce hw BB GRAPhics STATe on page 585 S...

Страница 163: ...fic signal segments are to be shown in greater detail With periodic signals a static image is obtained by selecting a period length of marker 1 that is equal to the signal period The displayed signal segment can be shifted as needed by entering a marker delay in the Trigger Marker menu of the active standard SCPI command SOURce hw BB GRAPhics TRIGger SOURce on page 586 Scrambling Code only if Code...

Страница 164: ...which is possible for the selected display The selection is made graphically by moving the pointer SCPI command SOURce hw BB GRAPhics SRATe USER on page 585 5 3 2 Bar of Graphics Window At the bottom of each graphics window there are buttons for freezing and zooming the display and for defining and activating a reference curve Run Freezes the current display Clicking the button again reactivates t...

Страница 165: ...reference curve s All defined reference curves are displayed simultane ously see the description of the Copy to ref button The reference curves are displayed together with the current signal They allow visual comparison of two or more signals with different settings e g with different filters Clicking the button again hides the reference curves The reference curves must be defined beforehand using...

Страница 166: ...eleted Display area The comments entered for the defined reference curve are shown in the display area next the assigned color A maximum of five colors and reference curves are available If no reference curve is assigned to a particular color the comment empty is displayed Comment Enters a comment for the current curve which is to be defined as the reference curve This comment then appears next to...

Страница 167: ...s minimum scaled amplitude 1 maximum scaled amplitude 1 The recording depth is 1 kSamples This signal is picked off at the output of the baseband main module Impairment function block i e contained in the displayed signal is impairment of the signal as defined by the user and the addition of noise 5 3 3 2 Vector Diagram The Q component is displayed over the I component in the vector diagram Each p...

Страница 168: ...nent The amplitudes of the signal components scaled to the peak envelope power PEP are plotted on the X and Y axis minimum scaled amplitude 1 maximum scaled amplitude 1 The recording depth is 2kSamples This signal is picked off at the output of the baseband main module Impairment function block i e contained in the displayed signal is impairment of the signal as defined by the user and the additio...

Страница 169: ...icked off at the output of the baseband main module Impairment function block i e contained in the displayed signal is impairment of the signal as defined by the user and the addition of noise 5 3 3 5 CCDF Display The Complementary Cumulative Distribution Function shows the probability with which the output signal will exceed the average power The level over the average power is plotted from 0 to ...

Страница 170: ... sampling rate 2 to sam pling rate 2 FFT Points indicates the number of I Q value pairs which are used for cal culating a part FFT AVG indicates the number of subspectra used for averaging The recording depth is 8kSamples This signal is picked off at the output of the baseband main module Impairment function block i e contained in the displayed signal is impairment of the signal as defined by the ...

Страница 171: ...the following alternatives by means of the RF ON OFF key the current entry focus is irrelevant by changing the state of the RF A Mod functional block see State RF on page 154 by enabling disabling the RF in the Configure menu of the RF A Mod block see RF Output State on page 155 The current state of the RF output activated and deactivated is indicated in the block diagram by means of the different...

Страница 172: ...d Instruments connected downstream can be taken into consideration when setting the frequency and level by entering a frequency and or level offset Automatic level control ALC ensures maximum level accuracy even with I Q modu lation User specific lists which contain level correction values for any frequency range User Correction can be created to for example compensate the cable attenuation in a t...

Страница 173: ...luding offset and multiplication factor in the header of the screen I e the indicated frequency corresponds to the frequency at the output of the downstream instru ment However the frequency at the RF output of your signal generator always corre sponds to the frequency set in the Frequency Phase dialog In this dialog you can also enter the values of the downstream instrument A set frequency offset...

Страница 174: ...s section in the upper part of the dialog In addition the multiplier factor of an externally connected multiplier is specified The step width which is used when setting the frequency using the rotary knob with Variation Active On is set in the User Variation section The phase of the output signal can be changed in the Phase Settings section The Phase Settings menu is described in chapter 5 4 3 Pha...

Страница 175: ... the R S SMBV SCPI command SOURce hw FREQuency MULTiplier on page 630 User Variation If the frequency is set using the rotary knob the step width is defined in the User Var iation section Variation Active RF Signal Activates the user defined step width used when varying the frequency value with the rotary knob ON The frequency value set with the rotary knob is varied using the user defined step wi...

Страница 176: ...phase is adopted as the new current phase i e the delta phase value is reset to 0 SCPI command SOURce hw PHASe REFerence on page 670 5 4 4 Reference Oscillator In the internal reference mode the internal reference signal is available at the REF OUT connector The frequency of the internal reference signal is permanently set to 10 MHz The settings of the reference oscillator are not influenced by an...

Страница 177: ...erence signal is output and used for measurements In addition to the error message Ext Ref missing the information RF output deactiva ted is indicated This setting is not influenced by a reset SCPI command SOURce ROSCillator EXTernal RFOFf STATe on page 691 External Reference Frequency Selects the frequency of the external reference signal You can select an external refer ence signal having a freq...

Страница 178: ...ed SCPI command SOURce ROSCillator INTernal ADJust VALue on page 691 5 4 5 Local Oscillator LO Coupling The LO Coupling function allows a distribution of the local oscillator signal in way that multiple RF signals can be driven by the same LO signal This is mandatory for minimizing the phase drift between these RF signals The LO Coupling function is available only for instruments equipped with the...

Страница 179: ...s internally used for upconverting the baseband signal to the RF is the same for all carriers a stable phase between the RF signals can be achieved 5 4 5 2 Typical Applications The LO Coupling function can be used to generate a MxN MIMO signal Generation of 2xN MIMO signal with two R S Signal Generators working in External mode 5 4 5 3 LO Coupling Menu To open the LO Coupling menu select RF A Mod ...

Страница 180: ...627 Out State LO Coupling Switches on off the LO output On The internal local oscillator signal is also available on the LO OUT con nector in order to couple two instruments Off The LO OUT signal is switched off SCPI command SOURce hw FREQuency LOSCillator OUTPut STATe on page 628 5 4 6 NRP Z Power Viewer The R S signal generator supports R S NRP Z power sensors to measure the power of the output ...

Страница 181: ...the result in either the NRP Z Power Viewer dialog or directly in the block diagram You can activate the permanent display in the block diagram in the NRP Z Power Viewer dialog This dialog provides access to all parameters concerning sensor settings like average or peak display reference source filter and level offset see NRP Z Power Viewer Settings The signal generator also supports the use of R ...

Страница 182: ...ned to the sensors at the following USB interfaces The suffix is identical to the index which is assigned automatically to each sensor upon connection Note The software version of the connected power sensor can be retrieved by means of the remote control command SENS POW TYPE Use the Setup chapter 5 2 3 6 NRP Z Info Update on page 115 dialog to update the sensor software SCPI command SENSe ch POWe...

Страница 183: ...or use the command SENSe ch POWer STATus DEVice on page 492 SCPI command INITiate ch POWer CONTinuous on page 486 Level Peak Power Sensors With certain power sensors only e g R S NRP Z81 Indicates the measured peak level value with the selected unit SCPI command READ ch POWer on page 486 Level Avg Power Sensors Indicates the measured level value with the selected unit SCPI command READ ch POWer on...

Страница 184: ...oing and generates an error message Zeroing can take a few seconds depending on the sensor model refer to the documentation of your external power sensor for more information Tips for zeroing Zeroing should be performed During warm up after switching on or connecting the instrument After a substantial change of the ambient temperature After fastening the power sensor module to an RF connector at h...

Страница 185: ...sured result to the extent desired Such fluctuations can be caused by inherent noise of the measuring instrument modulation of the measurement signal or beats from the superposition of adjacent car riers A more stable display has to be traded off against longer measurements The mea surement result is obtained from a two stage averaging process Note Longer measurements does not mean that it takes l...

Страница 186: ...ld to the right Fixed Noise The averaging factor is selected so that the sensor s intrinsic noise 2 standard deviations does not exceed the specified noise content The desired noise content is entered in the entry field to the right To avoid very long settling times when the power is low the averaging factor can be limited with the Timeout parameter SCPI command SENSe ch POWer FILTer TYPE on page ...

Страница 187: ... level accordingly This allows you to control the external signal level continuously and reliably reach a con stant input level at the DUT in real time Please keep in mind that modulated signals may differ from CW signals regarding mean power and peak power This affects the operation of NRP Z Level Control Beyond that it is strongly recommended that you disable the List mode since it also falsifie...

Страница 188: ...ero signal power For this purpose the RF power source must be switched off or disconnected from the sensor see tips below R S power sensors automatically detect the presence of any significant input power This aborts zeroing and generates an error message Zeroing can take a few seconds depending on the sensor model refer to the documentation of your external power sensor for more information Tips ...

Страница 189: ...e is equal to maximum level SCPI command SOURce hw POWer LIMit AMPLitude on page 678 Catch Range Sets the capture range of the control system Within the range Target Level Catch Range the power control locks and tries to achieve the target level Readings outside the range are not considered SCPI command SOURce hw POWer SPC CRANge on page 681 Delay Time Defines a waiting period between the level ad...

Страница 190: ... case of digital modulation or digital stand ard Be aware that there is a difference between the RF level displayed in the header and the RF output level set in the Level EMF dialog of the RF block RF level vs RF output level The level entered and displayed in the Level field takes the offset of any downstream attenuators amplifiers into consideration by way of calculation This means that with a l...

Страница 191: ...n the header of the instrument does not always correspond to the level at the RF output When working with a SW option always refer to the corresponding documentation for related specific information dBm dBuV mV and uV can be used as the level units The 4 unit keys are labeled with these units Note The SCPI command sets the level of the Level display i e an entered level offset is taken into consid...

Страница 192: ...de Selects performance preferences of the RF output signal regarding wideband noise and distortion Normal The generator provides an RF output signal with high signal to noise ratio as well as low distortion according to the data sheet LOW Noise This setting forces the generator to optimize the signal to noise ratio LOW Distor tion The generator reduces distortion harmonics of the RF signal SCPI co...

Страница 193: ...alue of the RF level in the header corre sponds to the level at the output of the downstream instrument SCPI command SOURce hw POWer LEVel IMMediate OFFSet on page 677 Attenuator Settings The attenuator mode is set in the Attenuator Settings section Attenuator Mode Sets the attenuator mode at the RF output Auto Standard mode The electronically switching attenuator switches with a 5 dB step width a...

Страница 194: ...imum when the RF signal is switched off This setting is recommended for applications that require a high level of noise suppression SCPI command SOURce hw POWer ATTenuation RFOFf MODE on page 676 User Variation If the level is set using the rotary knob the step width is defined in the User Variation section Variation Active Activates the user defined step width used when varying the level value wi...

Страница 195: ...y header are set in the Power On EMF Settings section of the RF Level EMF ALC UCOR dialog To open the RF Level EMF dialog select RF A Mod Configure Level EMF or use the MENU key under RF A Mod Power On State RF Signal Selects the state which the RF output is to assume after the instrument is switched on RF Off The output is deactivated when the instrument is switched on Previous Set ting When the ...

Страница 196: ...C states AUTO automatically adjusts the output level to the operating conditions On enables ALC permanently regardless of the currently selected mode Off deactivates ALC To maintain a defined output level in Off mode you can choose either Sample Hold S H status or Table S H activates ALC briefly when frequency or level settings change Table uses predefined values from a table to adjust the level a...

Страница 197: ...s on page 178 and chapter 5 4 8 2 RF Level Dialog on page 174 State ALC Activates deactivates internal level control Auto The instrument selects the most appropriate ALC mode automatically ALC is on in most operating conditions Default state On Activates ALC regardless of the operating conditions If Attenuator Mode Fixed is selected in addition the instrument adjusts the level of every level and f...

Страница 198: ...User Correction The User Correction function is used to create and activate lists in which level correction values predefined by the user are freely assigned to RF frequencies Correction is per formed by the user defined table values being added to the output level for the respective RF frequency With frequencies which are not contained in the list the level correction is determined by interpolati...

Страница 199: ...orrection or use the MENU key under RF A Mod The combined menu ALC UCOR is divided into the several sections The top sections provide access to the level and attenuator settings see chapter 5 4 8 2 RF Level Dialog on page 174 and to the automatic level control settings see chap ter 5 4 9 Automatic Level Control ALC on page 178 User Correction Settings The User Correction settings are set in the mo...

Страница 200: ... and level otherwise the entries are lost Frequency Hz Enters the frequency to which the level correction value applies Note The Fill function allows to automatically enter any number of frequencies with freely selectable range and increment Using the Fill With Sensor function of the Edit sub menu requires only the entry of the frequency values The level values are automati cally acquired by the c...

Страница 201: ...rked row Delete Range Allows to delete any number of rows starting with the marked row The number of rows to be deleted can be defined in an entry window Save as Open the file menu to save the list under a new name Note Save list only after filling both columns frequency and level otherwise the entries are lost Each list is saved to the R S Signal Generator hard disk as a separate file with the fi...

Страница 202: ... DEXChange MODE on page 621 Extension User Correction Selects the file extension of the ASCII file to be imported or exported Selection TXT text file or CSV Excel file is available SCPI command SOURce hw CORRection DEXChange AFILe EXTension on page 619 Decimal Point User Correction Selects the decimal separator used in the ASCII data between decimal point and comma with floating point numerals SCP...

Страница 203: ... selected the ASCII file is imported as user correction list When export is selected the user correction list is exported into the selected ASCII file SCPI command SOURce hw CORRection DEXChange EXECute on page 621 5 4 10 2 Filling the Correction List automatically The Fill Table menu enables you to automatically set the level correction values The start line and the number of rows to be filled ar...

Страница 204: ...t range with values starting with the start value and using the set increment SCPI command n a 5 4 10 3 Filling the Correction List with Power Sensor Measurement Data The level correction values for the user correction list can be acquired by means of R S NRP power sensors The R S NRP sensors are connected to either the SENSOR con nector or to one of the USB interfaces Configuration of the connect...

Страница 205: ...es the relevant generator settings Fill User Correction Data with Sensor All settings are read only except the Sensor In case more than one sensor is connec ted to the instrument the sensor can be selected in the Sensor field of menu The Execute button is only enabled if a sensor is detected and the user correction list contains at least one frequency value SCPI command SOURce hw CORRection CSET D...

Страница 206: ...dulation and a pulse generator are provided by options R S SMBV K22 Pulse Modulator and R S SMBV K23 Pulse Generator respectively Settings for the modulation are made in separate modulation menus These menus can be accessed in the block diagram by way of the RF A Mod function block or by means of the menu with the same name which is opened using the MENU key Enabling Disabling Analog Modulations u...

Страница 207: ...wise modulation distortions might occur With external pulse modulation the switching point is max 2 4 V and the voltage at the input should not exceed 5 V The maximum modulation frequency is 10 MHz for frequency and phase modulation Simultaneous Operation of Several Modulations or Other Operating Modes The table shows the modulations and operating modes which can be activated simulta neously or wh...

Страница 208: ...ched on The modulation source can be selected independently for the different modulation types and the LF output The configuration of the selected external and or internal modulation source is performed in the lower section of the dialog or in the LF Output dialog internal source only These settings affect all modulations which use the same modulation source State Activates deactivates AM modulati...

Страница 209: ...h on page 494 LF Gen Frequency Sets the frequency of the LF generator This setting affects all analog modulations which use the LF generator as the internal modulation source SCPI command SOURce LFOutput FREQuency on page 648 LF Gen Shape Selects the waveform shape of the LF signal SCPI command SOURce LFOutput ch SHAPe on page 655 AM Sensitivity Source External only Displays the input sensitivity ...

Страница 210: ...three modulation modes is possible Normal mode with full setting range for modulation bandwidth and FM deviation Low Noise mode with better signal noise ratio but reduced setting range for mod ulation bandwidth High Deviation mode with full setting range for FM deviation and a reduced setting range for modulation bandwidth see data sheet It is not possible to use frequency modulation simultaneousl...

Страница 211: ...and external source at the same time This setting enables two tone FM modulation SCPI command SOURce hw FM SOURce on page 625 FM Mode Selects the mode for the frequency modulation Normal The maximum range for modulation bandwidth and FM deviation is available Low Noise Frequency modulation with phase noise and spurious characteristics close to CW mode The range for modulation bandwidth and FM devi...

Страница 212: ...PI command SOURce hw FM DEViation on page 624 LF Gen Frequency Sets the frequency of the LF generator This setting affects all analog modulations which use the LF generator as the internal modulation source SCPI command SOURce LFOutput FREQuency on page 648 LF Gen Shape Selects the waveform shape of the LF signal SCPI command SOURce LFOutput ch SHAPe on page 655 FM Sensitivity Source External only...

Страница 213: ...al and or external source can be selected for phase modulation The LF GEN modulation generator is available as the internal source The MOD EXT and PULSE EXT input connectors for external feed of analog modulation signals are at the rear of the instrument The coupling mode of the input AC or DC and the impedance can be selected Selection between the following modulation modes is possible Normal mod...

Страница 214: ...me modulation sources State Activates deactivates PhiM modulation Activation of PhiM deactivates frequency modulation SCPI command SOURce hw PM STATe on page 673 PhiM Source Selects the source for the PhiM signal Internal Selects the internal LF generator as the source for PhiM modulation External Selects the external source The external signal is input via the EXT MOD connector Internal External ...

Страница 215: ...equency or to vary the RF frequency to a range in which the deviation can no longer be set In this case the maximally possible deviation is set and an error message is displayed SCPI command SOURce hw PM DEViation on page 671 LF Gen Frequency Sets the frequency of the LF generator This setting affects all analog modulations which use the LF generator as the internal modulation source SCPI command ...

Страница 216: ...internal source this connector can be used as external trigger or gate signal input for internal pulse modulation The polarity and input impedance of the con nector can be selected The pulse signal is output at the PULSE VIDEO connector at the rear of the instrument Automatic Level Control is deactivated with pulse modulation When pulse modulation is activated the ALC state of the R S SMBV is auto...

Страница 217: ...e modulation deactivates ALC and power ramping When the internal modulation source pulse generator is selected the pulse generator is switched on automatically and the video sync signal is output at the PULSE VIDEO output at the rear of the instrument Signal output can be switched off in the Pulse Gen erator dialog see chapter 5 4 13 3 Pulse Generator on page 203 SCPI command SOURce hw PULM STATe ...

Страница 218: ...lected as the modulation source i e Internal is selected as Source The LF Sweep mode is activated in the LF Frequency Sweep dialog see chap ter 5 4 14 4 LF Frequency Sweep on page 221 RF frequency and RF Level sweeps are activated in the respective dialogs of the RF block The option Pulse Generator R S SMBV K23 enables the generation of single and dou ble pulse signals The generator is activated a...

Страница 219: ...e on page 651 Output Voltage LF Output Sets the output voltage of the LF output The entered value determines the peak voltage SCPI command SOURce LFOutput VOLTage on page 655 LF Gen Frequency Sets the frequency of the LF generator This setting affects all analog modulations which use the LF generator as the internal modulation source SCPI command SOURce LFOutput FREQuency on page 648 LF Gen Shape ...

Страница 220: ...ings The dialog provides the settings for the pulse characteristics and trigger mode Video Sync Signal State Pulse Generator Switches on off the output of the video sync signal at the PULSE VIDEO connector The signal output and the pulse generator are automatically switched on with activation of pulse modulation if pulse generator is selected as modulation source The signal output can be switched ...

Страница 221: ...s the pulse delay The pulse delay determines the time that elapses after a trigger event before pulse modulation starts The pulse delay is not effective for double pulse generation SCPI command SOURce hw PULM DELay on page 685 Double Pulse Width Pulse Generator Double Pulse only Sets the width of the second pulse SCPI command SOURce hw PULM DOUBle WIDTh on page 686 Double Pulse Delay Pulse Generat...

Страница 222: ...cates the external trigger signal which is input at the PULSE EXT con nector The positive slope is active Channel 2 Indicates the sync signal The sync signal starts after a trigger delay of typi cally 50 ns see specifications The sync signal is output at the PULSE SYNC connector Channel 3 Indicates the pulse signal The pulse signal starts after the set pulse delay of 100 ns It is output at the PUL...

Страница 223: ... double pulse generation is without effect Chan nel 2 Indicates the sync signal The sync signal starts after a trigger delay of typically 50 ns see specifications The sync signal is output at the PULSE SYNC con nector Chan nel 3 Indicates the double pulse signal The first pulse starts without a delay The second pulse starts after the set double pulse delay time between start of first pulse to star...

Страница 224: ... it is high positive Chan nel 2 Indicates the sync signal The sync signal starts after a trigger delay of typically 50 ns see specifications It is repeated after the set pulse period of 300 ns as long as the gate signal is active The sync signal is output at the PULSE SYNC connector Chan nel 3 Indicates the pulse signal The first pulse starts after the pulse delay of 100 ns The second pulse starts...

Страница 225: ...ut PULSE EXT SCPI command SOURce hw PULM TRIGger EXTernal IMPedance on page 689 Use SIGNAL VALID as Pulse Sync Configures the signal at the SIGNAL VALID connector rear panel selected Indicates the validity of the RF signal at the output high while the signal settles low when it is stable valid cleared Generates a single pulse at the beginning of a pulse sequence e g to synchronize pulse modulation...

Страница 226: ...Update on page 115 5 4 14 2 RF Frequency Sweep The dialog is used to activate and configure a sweep for the RF frequency To open the Frequency Sweep menu select RF A Mod Configure RF Frequency Sweep or use the menu tree of the MENU key under RF Signal In the top section of the menu the RF sweep mode is activated and the sweep mode is selected The buttons are used to reset the RF sweep all sweep mo...

Страница 227: ...mand SOURce hw FREQuency MODE on page 630 Mode Frequency Sweep Selects the sweep instrument operating mode and the sweep mode Auto Sets an automatic repeated sweep cycle If a different sweep mode was activated prior to the Auto mode the cycle continues from the current sweep setting The Reset Sweep button resets the sweep to the start frequency Example SOUR SWE FREQ MODE AUTO TRIG FSW SOUR AUTO SO...

Страница 228: ...use the UP DOWN navigation keys or the rotary knob You can determine the step width below in the entry field Step Lin or Step Log see Step Lin Log Frequency Sweep If a sweep range border frequency Start Freq or Stop Freq is reached step commands in direction out of the sweep range are ignored The Reset Sweep button resets the sweep to the start frequency Note To step through the sweep frequencies ...

Страница 229: ...to the start frequency Example SOUR SWE FREQ MODE AUTO TRIG FSW SOUR EXT SOUR FREQ MODE SWE External trigger Extern Step Sets a step by step sweep cycle Each sweep step is triggered by an external trigger signal trigger source as described under Extern Sin gle The step width is set below at entry field Step Lin or Step Log If a different sweep mode was activated prior to the Extern Step mode the c...

Страница 230: ...tors for external trigger signal input The external trigger signal is input at the rear of the instrument BNC connector INST TRIG Example SOUR SWE FREQ MODE AUTO TRIG FSW SOUR EAUT SOUR FREQ MODE SWE External trigger SCPI command SOURce hw SWEep FREQuency MODE on page 694 TRIGger hw FSWeep SOURce on page 721 SOURce hw FREQuency MODE on page 630 Execute Single Sweep Frequency Sweep Triggers the swe...

Страница 231: ...logarithmic sweep spacing Linear With the linear sweep the step width is a fixed frequency value which is added to the current frequency The step width is entered below Logarithmic With the logarithmic sweep the step width is a constant fraction of the current frequency This fraction is added to the current frequency The logarithmic step width is entered below in SCPI command SOURce hw SWEep FREQu...

Страница 232: ...quency The linear step width is entered in Hz SCPI command SOURce hw SWEep FREQuency STEP LINear on page 697 Step Log With the logarithmic sweep the step width is a constant fraction of the current frequency The logarithmic step width is entered in Successive frequencies are calculated as follows start_f stop_f f2 f1 1 step_log 100 If f2 stop_f f2 is set to stop_f start_f stop_f f2 f1 1 step_log 1...

Страница 233: ... the INST TRIG input BNC connector at the rear of the instrument Positive The rising edge of the trigger signal is active Negative The falling edge of the trigger signal is active SCPI command SOURce INPut TRIGger SLOPe on page 636 5 4 14 3 RF Level Sweep To open the Level Sweep menu select RF A Mod Configure Level Sweep or use the MENU key under RF A Mod RF Level Sweep Settings The RF Level Sweep...

Страница 234: ...o mode the cycle continues from the current sweep setting The Reset Sweep button resets the sweep to the start level Example SOUR SWE POW MODE AUTO TRIG PSW SOUR AUTO SOUR POW MODE SWE Single Sets a single sweep cycle The sweep is triggered by the Execute Sin gle Sweep button If a different sweep mode was activated prior to the Single mode the current sweep is stopped The single sweep always start...

Страница 235: ...tered with command SOUR SWE POW STEP sets the step width The value entered with command SOUR POW MAN has no effect the command only triggers the next sweep step However the value has to be in the currently set sweep range start to stop In remote control only a step by step sweep from start to stop frequency is possible Extern Single Sets a single sweep cycle The sweep is triggered by an external t...

Страница 236: ...the sweep at the current fre quency Stop The third external trigger signal starts the sweep at the start frequency Start If a different sweep mode was activated prior to the Extern Start Stop mode the current sweep is stopped and the Extern Start Stop sweep starts at the start frequency when triggered The Reset button resets the sweep to the start level Refer to the description of the rear panel f...

Страница 237: ...eep Displays the current level If Step is set the level for the next level step of the sweep is entered here SCPI command SOURce hw POWer MANual on page 679 Shape RF Level Sweep Selects the cycle mode for a sweep sequence shape Sawtooth One sweep runs from the start level to the stop level The subsequent sweep starts at the start level again i e the shape of sweep sequence resembles a sawtooth Tri...

Страница 238: ...te It is recommended to switch off the GUI update for optimum sweep performance espe cially with short dwell times see chapter 5 2 3 5 Gui Update on page 115 SCPI command SOURce hw SWEep POWer DWELl on page 698 Trigger Input Slope Sets the polarity of the active slope of an applied instrument trigger This setting affects the INST TRIG input BNC connector at the rear of the instrument Positive The ...

Страница 239: ...ivating the LF frequency sweep automatically deactivates the list mode RF level sweep and RF frequency sweep SCPI command SOURce LFOutput FREQuency MODE on page 649 Mode LF Sweep Selects the Sweep instrument operating mode and Sweep mode Auto Sets are automatic repeated sweep cycle If a different sweep mode was activated prior to the Auto mode the cycle continues from the current sweep setting The...

Страница 240: ...t LF frequency The Reset Sweep button resets the sweep to the start frequency Example SOUR LFO SWE FREQ MODE MAN SOUR LFO FREQ MODE SWE SOUR LFO SWE FREQ SPAC LIN SOUR LFO SWE FREQ STEP LIN 1E34 SOUR LFO FREQ MAN 12 kHz The value entered with command SOUR LFO SWE FREQ STEP LIN LOG sets the step width The value entered with command SOUR LFO FREQ MAN has no effect the command only sets the next swee...

Страница 241: ...he sweep at the current fre quency Stop The third external trigger signal starts the sweep at the start frequency Start If a different sweep mode was activated prior to the Extern Start Stop mode the current sweep is stopped and the Extern Start Stop sweep starts at the start frequency when triggered The Reset button resets the sweep to the start frequency The external trigger signal is input at t...

Страница 242: ...arithmic sweep spacing SCPI command SOURce LFOutput SWEep FREQuency SPACing on page 653 Shape LF Frequency Sweep Selects the cycle mode for a sweep sequence shape Sawtooth One sweep runs from start to stop frequency Each subsequent sweep starts at the start frequency i e the shape of the sweep sequence resembles a sawtooth Triangle One sweep runs from start to stop frequency and back i e the shape...

Страница 243: ...dwell time determines the duration of the individual sweep steps The Dwell Time set by the user is used as the step time of the sweep The effective net dwell time is shorter reduced by the setting time This setting time may be greater than the time specified in the data sheet Note It is recommended to switch off the GUI update for optimum sweep performance espe cially with short dwell times see ch...

Страница 244: ...merals can be set In addition internally created List data can be exported into ASCII files using the export function The necessary hardware settings are calculated the first time a list is processed With long dwell times this calculation can be performed while the list is being processed the entered dwell times are observed With very short dwell times calculation of the hardware settings increase...

Страница 245: ...ist mode automatically deactivates all sweeps During list mode the frequency and level indications do not display the currently set values SCPI command SOURce hw FREQuency MODE on page 630 Mode List Mode Selects the cycle mode of the List mode Auto Cycle from the beginning to the end of the list with automatic restart at the beginning If a different mode was activated prior to the Auto mode the cy...

Страница 246: ...st step is determined by the time between two trigger events The external trigger signal is input at the BNC connector INST TRIG Button Reset restarts the list at the starting point SCPI command SOURce hw LIST MODE on page 666 SOURce hw LIST TRIGger SOURce on page 668 Execute Single List Mode Triggers the list manually This button is available only if mode Single is selected SCPI command SOURce hw...

Страница 247: ... determined in this way is stored along with the list It may be necessary to deliberately activate list learning in the event of greatly altered environmental conditions that require new hardware settings If this is not done a previously learned hardware setting will continue to be used when list mode is switched on State On If no setting is available e g when the list is used for the first time l...

Страница 248: ...z Enter the frequency of the frequency power value pair SCPI command SOURce hw LIST FREQuency on page 663 Power dBm Enter the level of the frequency power value pair SCPI command SOURce hw LIST POWer on page 667 Goto Selects row for editing If Goto row is selected a window opens for entering the requested row Edit Calls a selection of possible actions described below Insert Row Inserts a new row b...

Страница 249: ...st is saved under its current name List Range In List Mode Defines an index range in the current list by setting the start and stop index Only the values in the selected index range are processed in List mode all other list entries are ignored SCPI command SOURce hw LIST INDex STARt on page 665 SOURce hw LIST INDex STOP on page 665 Trigger Input Slope Sets the polarity of the active slope of an ap...

Страница 250: ...xcel file is available SCPI command SOURce hw LIST DEXChange AFILe EXTension on page 659 Decimal Point List Mode Selects the decimal separator used in the ASCII data between decimal point and comma with floating point numerals SCPI command SOURce hw LIST DEXChange AFILe SEParator DECimal on page 661 Column Separator List Mode Selects the separator between the frequency and level column of the ASCI...

Страница 251: ...EXECute on page 661 5 4 15 2 Filling the List Mode Data automatically The Fill List Mode Data menu enables you to automatically set the values in the List Mode table The start line and the number of rows to be filled are defined under From and Range The column to be filled is selected under Select column to fill Depending on the selec tion here the default for start end and increment value are set...

Страница 252: ...r the level entries SCPI command n a Increment value Sets the increment for the frequency or the level entries SCPI command n a Fill Fills the selected column in the set range with values starting with the start value and using the set increment SCPI command n a 5 5 I Q Modulation I Q Mod Block The R S Signal Generator offers I Q modulation with external analog I Q signals external digital signals...

Страница 253: ...generated baseband signal is configured in the Baseband function block see chapter 5 8 Baseband Signal Baseband Block on page 271 Before the signal is fed into the I Q modulator noise can be added and or the signal can be impaired Impairment at this point along the signal flow is offered to allow a signal to be output at the I Q OUT outputs a signal which for example compensates signal distortion ...

Страница 254: ... modulation parameters select I Q Mod Configure I Q Settings or use the MENU key System error correction of the I Q modulator permits precise and repeatable measure ments The correction routine should be called in the case of temperature fluctuations of several degrees To call the routine press the SETUP key and select System Internal Adjustment and execute the desired adjustment procedure It is n...

Страница 255: ...e signal must be applied at the inputs I and Q Internal Base band I Q In Selects the internal baseband signal as the input signal This setting requires the additional equipment options for generating the various baseband signals SCPI command SOURce hw IQ SOURce on page 639 State I Q Mod Activates deactivates I Q modulation If Analog Wideband I Q In is selected the I Q modulator is also deactivated...

Страница 256: ...level control to the Sample Hold mode as oth erwise level errors may occur see chapter 5 4 9 Automatic Level Control ALC on page 178 SCPI command SOURce hw IQ IMPairment STATe on page 639 Offset I Q Mod Sets the carrier offset in percent of the amplitudes scaled to the peak envelope power PEP for the I and or Q signal component An ideal I Q modulator suppresses the carrier offset completely offset...

Страница 257: ...Instrument Function R S SMBV100A 240 Operating Manual 1407 6062 32 08 Fig 5 2 Effect of offset for the I component I Q Modulation I Q Mod Block ...

Страница 258: ...Instrument Function R S SMBV100A 241 Operating Manual 1407 6062 32 08 Fig 5 3 Effect of offset for the Q component I Q Modulation I Q Mod Block ...

Страница 259: ... offset is roughly 12 according to the following Imbalance dB 20log GainQ GainI An ideal I Q modulator amplifies the I and Q signal path by exactly the same degree The imbalance corresponds to the difference in amplification of the I and Q channel and therefore to the difference in amplitude of the signal components In the vector diagram the length of the I vector changes relative to the length of...

Страница 260: ...SMBV100A 243 Operating Manual 1407 6062 32 08 Fig 5 5 Effect of a positive gain imbalance Negative values mean that the I vector is amplified more than the Q vector by the corre sponding percentage I Q Modulation I Q Mod Block ...

Страница 261: ...rature offset An ideal I Q modulator sets the phase angle to exactly 90 degrees With a quadrature offset the phase angle between the I and Q vector deviates from the ideal 90 degrees the amplitudes of both components are of the same size In the vector diagram the quadrature offset causes the coordinate system to shift A positive quadrature offset means a phase angle greater than 90 degrees I Q Mod...

Страница 262: ...ent Function R S SMBV100A 245 Operating Manual 1407 6062 32 08 Fig 5 7 Effect of a positive quadrature offset A negative quadrature offset means a phase angle less than 90 degrees I Q Modulation I Q Mod Block ...

Страница 263: ...swapping the I and Q signals This parameter enables I Q modulation to be performed on signals according to IS2000 cdma2000 standard and the majority of all other standards As a result an I Q demod ulator defined according to IS2000 can also be used for demodulating the generated signals The I Q modulator defined in the IS2000 standard differs from the definition in the R S Signal Generator The def...

Страница 264: ...l On The I and Q signals are swapped SCPI command SOURce hw IQ SWAP STATe on page 640 I Q Wideband I Q Mod Optimized setting for wideband modulation signals 5 MHz Optimized setting for wide band modulation signals 5 MHz The modulation frequency response is decreased at the expense of poorer harmonic suppression This is achieved by shifting the switching frequencies of the lowpass filters in the ou...

Страница 265: ...al to be impaired before it is passed on to the I Q modulator and also noise to be added to the signal The noise generator can also be used to generate a pure noise signal These settings are available in the block diagram in the AWGN IMP function block as well as in the menu with the same name which is opened using the MENU key The equipment options for the basic unit R S Signal Generator with fre...

Страница 266: ... analog signal to be set in the I Q modulator The relevant settings are made in the I Q Mod function block see chapter 5 5 I Q Modulation I Q Mod Block on page 235 5 6 1 1 Impairment Settings Menu To access the Impairment Settings menu for setting the digital I Q impairments select AWGN IMP Configure I Q Impairements or use the MENU key under AWGN IMP I Q impairment is activated and set in the I Q...

Страница 267: ...ments Sets the carrier leakage in percent of the amplitudes scaled to the peak envelope power PEP for the I and or Q signal component An ideal I Q modulator suppresses the carrier leakage completely offset 0 percent If an offset is entered for a component a carrier leakage with fixed amplitude is added to the signal In the diagram all I values or Q values are offset by a fixed amplitude value depe...

Страница 268: ...Instrument Function R S SMBV100A 251 Operating Manual 1407 6062 32 08 Fig 5 11 Effect of offset for the Q component Impairment of Digital I Q Signal and Noise Generator AWGN IMP Block ...

Страница 269: ...ughly 12 according to the following Imbalance dB 20log GainQ GainI An ideal I Q modulator amplifies the I and Q signal path by exactly the same degree The imbalance corresponds to the difference in amplification of the I and Q channel and therefore to the difference in amplitude of the signal components In the vector diagram the length of the I vector changes relative to the length of the Q vector...

Страница 270: ...ng Manual 1407 6062 32 08 Fig 5 13 Effect of a positive gain imbalance Negative values mean that the I vector is amplified more than the Q vector by the corre sponding percentage Impairment of Digital I Q Signal and Noise Generator AWGN IMP Block ...

Страница 271: ...deal I Q modulator sets the phase angle to exactly 90 degrees With a quadrature offset the phase angle between the I and Q vector deviates from the ideal 90 degrees the amplitudes of both components are of the same size In the vector diagram the quadrature offset causes the coordinate system to shift A positive quadrature offset means a phase angle greater than 90 degrees Impairment of Digital I Q...

Страница 272: ...V100A 255 Operating Manual 1407 6062 32 08 Fig 5 15 Effect of a positive quadrature offset A negative quadrature offset means a phase angle less than 90 degrees Impairment of Digital I Q Signal and Noise Generator AWGN IMP Block ...

Страница 273: ... be the half of the I Q skew value A positive I Q skew means that the Q vector delays relative to the I vector and vice versa SCPI command SOURce hw BB IMPairment SKEW on page 589 IQ Delay Sets the time delay of both I and Q vectors relative to the selected trigger and marker or relative to the other instrument s working in the master slave synchronous mode see chapter 5 8 2 4 Synchronous Signal G...

Страница 274: ... Typical applications for the noise generator are bit error or block error measurements depending on the set S N or C N ratio The Gaussian noise is generated by means of feedback shift registers with subsequent probability transformation The switching configuration is such that virtually ideal statis tical characteristics are achieved I and Q paths are decorrelated from each other The crest factor...

Страница 275: ...WGN IMP The AWGN Settings menu is divided into the following sections The RFI signal generator is activated the mode selected and the interfering signal is configured in the top section of the menu The level of the interfering signal is configured in the Noise Level Configuration And Output Results section In Additive Noise and CW interferer mode the interfering level can be defined and the result...

Страница 276: ...F bandwidth to which the set carrier noise ratio relates Within this frequency range the signal is superimposed with a noise signal whose level corresponds exactly to the set C N or S N ratio Note The noise signal is not generated arbitrarily for a particular bandwidth but instead it is generated in steps Noise therefore also occurs outside the set system bandwidth SCPI command SOURce hw AWGN BWID...

Страница 277: ...er mode The actual frequency may differ from the desired frequency since the resolution is limited to 0 7 Hz Tip The desired frequency constellation can be precisely set with an accuracy of up to 0 01 Hz by selecting a suitable frequency offset of the baseband source e g Custom Dig Mod and by correcting the RF frequency by the difference between Resulting and Target CW Frequency SCPI command SOURc...

Страница 278: ...kept constant and the noise level is adjusted This is the standard procedure for measuring the bit error rate versus the noise power Noise If the C N value or Eb N0 value changes the noise level is kept constant and the carrier level is adjusted Some test cases of 3GPP Base Station Tests TS 25 141 specify for example that the noise power be permanently set as a function of the base station power c...

Страница 279: ...sity in Additive Noise mode In Carrier Reference Mode this entry determines the noise level and therefore also the level of the output signal It does not affect the level of the useful signal i e the carrier level is kept constant In Noise Reference Mode this entry determines the level of the useful signal i e the carrier level the noise level is kept constant The level of the noise signal which i...

Страница 280: ...r Reference Mode Displays the level of the noise signal in the system bandwidth The level of the noise signal is derived from the entered C N or S N or Eb N0 value The carrier level is entered under Carrier Level respectively the signal level is displayed under Signal Level CW Interferer mode Noise Reference Mode Sets the level of the interfering signal The level of the carrier is derived from the...

Страница 281: ... of this parameter depends on the selected Display Mode SCPI command SOURce hw AWGN POWer SUM on page 502 Carrier Noise PEP Signal Noise PEP Total Bandwidth Carrier Interferer PEP Signal Interferer PEP Additive Noise and CW Interferer Displays the peak envelope power of the overall signal comprised of noise signal plus useful signal The name of this parameter depends on the selected Display Mode N...

Страница 282: ...tal I Q Output Settings on page 267 for description 5 6 3 1 I Q Out Settings Menu The settings dialogs for the analog signal output are available in the block diagram in the AWGN IMP function block as well as in the menu with the same name which is opened using the MENU key Selecting the menu item I Q Out Settings opens a dialog with the parameters for the I Q output signal The settings dialog for...

Страница 283: ...Q OUT and Q OUT BAR Single Ended Single ended output at I OUT and Q OUT SCPI command SOURce hw IQ OUTPut TYPE on page 642 Output Mode Selects the mode for setting the outputs independent or together The menu changes depending on the selection here Fixed The settings for the I Q signal components are fixed and cannot be changed Level Vp EMF Single ended 1 0 V Level Vp EMF Differential 2 0 V Variabl...

Страница 284: ...mmand SOURce hw IQ OUTPut ANALog POWer PEP RESult on page 641 5 7 Digital I Q Output Settings The output of the digital baseband signal requires the option R S SMBV K18 Digital Baseband Connectivity If this option is connected the instrument adds as separate function block to the block diagram the BB In Out block If digital Output is selected the R S SMBV displays DIG I Q OUT and a corresponding s...

Страница 285: ...l I Q Output Selects the source for the sample rate of the digital I Q output signal User Defined The internally generated clock reference signal is used The sample rate is calculated and displayed in the field Value Digital I Q Out An external clock reference signal is used The clock signal is directly fed in via pin CLK2 of the digital output interface option R S SMBV K18 Digital Baseband Connec...

Страница 286: ...lue PEP The level entry fields and the corresponding units are displayed in the status bar The level display always refers to both signal components SQR I2 Q2 SCPI command SOURce hw IQ OUTPut DIGital POWer PEP on page 645 Level Digital I Q Out The signal level is expressed in terms of an rms level value The level entry fields and the corresponding unit are displayed in the status bar The level dis...

Страница 287: ...gital I Q Out connector Overload may occur e g if the level of the output signal or the noise level AWGN are too high SCPI command SOURce IQ OUTPut DIGital OFLow STATe on page 644 Overflow Hold Digital I Q Out Indicates an overflow since last reset The overflow hold state can be reset via the Reset button next to the LED or is reset automatically by starting a new signal generation or by setting n...

Страница 288: ...nerator in the form of waveform files Several digital standards are provided plus digital modulation with user definable signal characteristics generation of waveforms with the aid of the Arbitrary Waveform Gener ator and generation of multi carrier CW signals with the aid of Multi Carrier CW The settings for digital modulation can be accessed in the block diagram via the Base band function block ...

Страница 289: ...et for the baseband signal The frequency offset shifts the baseband frequency interval and provides a quick way to shift the used frequency band in the RF frequency section without modifying the RF set tings Wenn a frequency offset is defined an icon is displayed in the signal flow right to the baseband block The complex I Q bandwidth of the shifted useful signal must not exceed 120 MHz R S SMBV w...

Страница 290: ...ws fuse 1 0 22 3 84 MHz 4 6848 MHz So as to comply with the condition requiring a maximum I Q bandwidth of 40 MHz the valid range of values for the frequency offset is then 60MHz 4 6848MHz 2 foffset 60MHz 4 6848MHz 2 or 57 6576MHz foffset 57 6576MHz In the case of ARB signals the output clock rate can be used for estimating the maximum I Q bandwidth of the waveform SCPI command SOURce hw BB FOFFse...

Страница 291: ... connectors Likewise control signals and also trigger signals for triggering signal generation in the R S Signal Generator can be internally generated or supplied from an external source Two marker output signals for synchronizing external instruments can be user defined Externally computed waveform files can be loaded in the instrument using computer interfaces or IEC bus Waveform files are proce...

Страница 292: ...an also be used as internal modulation data The Data Source selection from the menus is ALL 0 ALL1 A var iable bit string with a maximum length of 64 bits can be entered in an input field by selecting Pattern 5 8 2 2 Internal Modulation Data from Lists Internal modulation data can be generated and stored in the form of binary lists A sep arate file is created for each list and held on the instrume...

Страница 293: ...rnal clock is always supplied via the CLOCK connector When the external clock reference is selected the internal clock is synchronized to it The table bellow gives an overview of the connectors the internal clocks are output at Connector Location Clock Mode CLOCK OUT rear panel Symbol clock The active edge of the external clock signal on the CLOCK input is selectable menu Setup System Global Trigg...

Страница 294: ...ck as well as with its trigger signal The instruments have to be configured and connected as described in the following sections This straightforward method ensure the simultaneous and synchronous signal generation in both the baseband and the RF part However to ensure even better phase coherence of the signal at the RF outputs the LO Coupling feature of the R S SMBV should be used For more inform...

Страница 295: ...e synchronous mode Fig 5 20 Connection of several R S SMBVs for synchronous signal generation Some applications require a common external trigger source for all instruments The connections necessary for this case are not shown on figure above and not considered in this description The following sections assume the default situation i e that the master instrument provides the slaves with its intern...

Страница 296: ...ation settings are automatically set The synchronization clock including the trigger signal and the reference clock of the master instrument are output on the CLK OUT and the REF OUT connectors and supplied to the slave instrument Step 3 Configure Slave Instrument s For working in master slave synchronous mode the slave instrument s has have to be configured as follow 1 Configure the instrument to...

Страница 297: ...tput in unmodulated form In case of standards in which it is possible to switch between different modulation modes the signal is output only and cannot be supplied from an external source In such cases it indicates the modulation mode internally standard GSM signal high 1 modulation mode GMSK and signal low 0 modulation mode 8PSK EDGE The CW control signal and the signals for power ramping are gen...

Страница 298: ...ev Att signal defines the start and end of level attenuation The level attenuation value is defined in the Power Ramp Control menu 5 8 2 6 Trigger Signals In the R S Signal Generator trigger signals are internally generated or externally sup plied signals which start signal generation at a particular point in time Signal generation can also take place without triggering in which case the signal is...

Страница 299: ...ger which would cause a signal generation restart every time but for the suppression Example Entering 1000 samples means that after a trigger event any subsequent trigger signal is ignored for the space of 1000 samples 5 8 2 7 Marker Output Signals The R S Signal Generator generates user definable marker output signals which can be used to synchronize external instruments By this means a slot cloc...

Страница 300: ...This is represented graphically in the constellation diagrams The mapping for the selected modulation type is displayed in the More submenu in the Modulation menu section see More Modulation Type Digital Modula tion on page 301 The QAM procedures 16QAM 32QAM 64QAM have been produced in accordance with ETSI standard ETS 300429 for digital video broadcasting DVB The QAM procedures 256QAM and 1024QAM...

Страница 301: ... bits per symbol pi 4rotation SOUR BB DM FORM P4QP pi 2 DBPSK 1 bit per symbol Differential coding pi 2 rotation SOUR BB DM FORM P2DB pi 4 DQPSK 2 bits per symbol Differential coding pi 4 rotation SOUR BB DM FORM P4DQ pi 8 D8PSK 3 bits per symbol Differential coding pi 8 rotation SOUR BB DM FORM P8D8 8PSK 3 bits per symbol SOUR BB DM FORM PSK8 8PSK EDGE 3pi 8 8PSK 3 bits per symbol Edge coding 3pi...

Страница 302: ...SOUR BB DM FORM QAM16EDge 32QAM 5 bits per symbol SOUR BB DM FORM QAM32 32QAM EDGE 5 bits per symbol pi 4 rotation SOUR BB DM FORM QAM32EDge 64QAM 6 bits per symbol SOUR BB DM FORM QAM64 128QAM 7 bits per symbol SOUR BB DM FORM QAM128 256QAM 8 bits per symbol SOUR BB DM FORM QAM256 1024QAM 10 bits per symbol SOUR BB DM FORM QAM1024 Baseband Signal Baseband Block ...

Страница 303: ...le must have extension vam and can be cre ated with the R S mapping wizard The mapping wizard mapwiz is a tool from Rohde Schwarz designed for editing modulation schemes e g QPSK 32QAM Its main pur pose is the assignment of logical symbol numbers to constellation points and the selection of modulation specific parameters Beyond this it supports the creation of nearly any arbitrarily chosen constel...

Страница 304: ...spondingly coded output symbol Individual bits in the symbols from the LSB least sig nificant bit to the MSB most significant bit are denoted by a0n a1n and so on The same applies to the output symbols Table 5 3 Permissible coding combinations for modulation symbols and modulation type OFF Differ ential Phase Diff Diff Gray Gray GSM NADC PDC PHS TETRA APCO25 PSK PWT TFTS TETRA INMARSAT ICO WCDMA c...

Страница 305: ... symbols The following tables show the assignment of modulation symbols to phase shifts of the I Q vector in relation to the selected coding Table 5 4 Phase shifts for pi 4DQPSK Modulation symbol an binary indication MSB LSB 00 01 10 11 Phase shifts without coding 45 135 135 45 Phase shifts with coding NADC PDC PHS TETRA or APCO25 PSK 45 135 45 135 Phase shifts with coding TFTS 135 135 45 45 Codin...

Страница 306: ...ay and differential coding for 8PSK modulation First a gray coding is performed according to the gray code Afterwards a differential coding is performed according to the recursive coding algorithm quoted above The assignment between modulation symbols and phase differences shown in the following table is generated Differential coding according to VDL can be used for modulation types with 3 bits sy...

Страница 307: ... bus commands The filter characteristic is displayed in graphical form Table 5 7 Baseband filter Cosine Roll Off Factor SOUR BB DM FILT TYPE COS SOUR BB DM FILT PAR COS 0 99 Bandwidth SOUR BB DM FILT PAR COS BAND 7200 Root Cosine Roll Off Factor SOUR BB DM FILT TYPE RCOS SOUR BB DM FILT PAR RCOS 0 99 Gauss FSK B x T SOUR BB DM FILT TYPE GAUS SOUR BB DM FILT PAR GAUS 2 5 Pure Gauss B x T SOUR BB DM...

Страница 308: ...E228 cdma2000 3X SOUR BB DM FILT TYPE DM3x APCO25 Roll Off Factor SOUR BB DM FILT TYPE APCO25 SOUR BB DM FILT PAR APC 0 5 APCO25 H CPM SOUR BB DM FILT TYPE APCO25Hcpm APCO25 LSM SOUR BB DM FILT TYPE APCO25Lsm Gauss Cut Off Frequency SOUR BB DM FILT PAR APCO25L GAU S 25000 Gauss Cut Off Frequency SOUR BB DM FILT PAR APC025 LOWP 75000 Baseband Signal Baseband Block ...

Страница 309: ...must have extention vaf and can be created with the R S filter wizard The filter wizard filtwiz is a tool from Rohde Schwarz designed for creating filter files that can be imported on a R S SMBV Its main purpose is the conversion of user defined finite impulse response FIR filters into the filter format vaf Beyond this filtwiz pro vides designs for standard filters e g Root Raised Cosine Gaussian ...

Страница 310: ... A list of the possible settings conflicts and messages in digital modulation can be found in chapter 9 Error Messages on page 727 5 8 3 6 Custom Digital Mod User Interface The menu for setting digital modulation can be opened either in the Baseband block or in the menu tree under Baseband The Custom Digital Modulation menu enables direct selection of the data source standard symbol rate coding mo...

Страница 311: ...setting is displayed next to the button General Settings The upper part of the menu is used for powering up digital modulation as well as for calling the default settings and user defined standards State Digital Modulation Enables disables digital modulation Switching on digital modulation turns off all the other digital standards The digital modulation is generated in realtime no precalculated si...

Страница 312: ...he Save Recall dialog the File Select windows for saving and recalling the complete settings in the Custom Digital Modulation menu can be called The Digital Modulation Settings are stored as files with the predefined file extension dm The file name and the directory they are stored in are user definable The complete settings in the Custom Digital Modulation dialog are saved and recalled SCPI comma...

Страница 313: ...ers offered depend on the data source selected The More button opens a submenu for calling the data editor and the file manager Data Source Digital Modulation Selects the data source see chapter 5 8 2 Data and Signal Sources in Base band on page 274 You may choose from the following data sources All 0 All 1 0 data or 1 data is internally generated PRBS PRBS Type PRBS data in accordance with the IU...

Страница 314: ...gital Modulation Calls the menu for managing data and control lists see List Manage ment on page 305 SCPI command n a Standard Symbol Rate Coding The middle part of the menu is used for selecting the standard the symbol rate and the coding Set acc to Standard Digital Modulation Selects a standard After selection modulation parameters Modulation Type Symbol Rate Filter and Coding are automatically ...

Страница 315: ... 8 ksym s Cosine roll off 1 BW 7 2 KHz APCO25 8FSK APCOPH1Wcqpsk Bluetooth 2FSK Deviation 160 0 kHz 1 0 Msym s Gauss B T 0 5 OFF BLUetooth DECT 2FSK Deviation 288 0 kHz 1 152 Msym s Gauss B T 0 5 OFF DECT ETC ARIB STD T55 ASK ASK Depth 100 1 024 Msym s Split Phase B T 2 0 OFF ETC GSM MSK 270 833333 ksym s Gauss B T 0 3 GSM GSM GSM EDGE 8PSK EDGE 3pi 8 8PSK 270 833333 ksym s Gauss linear OFF GSMEdg...

Страница 316: ...redefined If the set sym bol rate is outside this range an error message is generated and the maximum value for the newly chosen modulation type is automatically set SCPI command SOURce hw BB DM SRATe on page 551 Coding Digital Modulation Selects the coding see chapter 5 8 3 3 Coding Custom Digital Mod on page 287 The menu offers only the coding settings that are permissible for the chosen modulat...

Страница 317: ...ger menu The File Manager menu is used to display and delete files SCPI command SOURce hw BB DM MLISt SELect on page 581 SOURce hw BB DM MLISt CATalog on page 573 SOURce hw BB DM MLISt DELete on page 580 ASK Depth Digital Modulation Sets the modulation depth m for ASK modulation m Amplitudemax Amplitudemin Amplitudemax Amplitudemin SCPI command SOURce hw BB DM ASK DEPTh on page 566 FSK Deviation D...

Страница 318: ...ays the mapping of the currently selected modulation type and the digital modulation delay in the case of an external data source The Modulation CW Switching section can be used to enable switching of the signal between modulated and unmodulated In case of selection Variable FSK the FSK type and the deviation for each symbols is set in the Variable FSK section Baseband Signal Baseband Block ...

Страница 319: ...he active clock edge for data and the cor responding peak I Q value associated with this data item on the I Q connectors SCPI command SOURce hw BB DM MDELay on page 569 Current Modulation Type Digital Modulation Displays the currently selected modulation type together with its associated mapping SCPI command n a Modulation CW Switching The Modulation CW Switching section is used to enable switchin...

Страница 320: ...le for filter parameter Lowpass and APCO25 LSM only Sets the value for the cut off frequency factor The cut off frequency of the filter can be adjusted to reach spectrum mask requirements SCPI command SOURce hw BB DM FILTer PARameter LPASs on page 564 SOURce hw BB DM FILTer PARameter LPASSEVM on page 564 SOURce hw BB DM FILTer PARameter APCO25Lsm GAUSs on page 565 SOURce hw BB DM FILTer PARameter ...

Страница 321: ...FLISt SELect on page 579 SOURce hw BB DM FLISt CATalog on page 573 SOURce hw BB DM FLISt DELete on page 579 Current Filter Response Displays the filter characteristic of the currently selected filter SCPI command n a Power Ramp The lower part of the Custom Digital Modulation menu is used for setting triggers marker and clocks as well as for power ramp settings Power Ramp Control Digital Modulation...

Страница 322: ...Management The List Management menu is called from the Custom Digital Modulation main menu The data and control lists are selected and created in the File Select menu which is called up by means of the Data List and Control List buttons The File Manager is used to copy rename and delete files and to create directories For more information see chapter 4 7 File Management on page 91 To ensure that t...

Страница 323: ...le Name The new list contains no data it can be edited in the list editor SCPI command SOURce hw BB DM DLISt SELect on page 578 SOURce hw BB DM CLISt SELect on page 576 File Manager Digital Modulation Calls the File Manager The File Manager is used to copy delete and rename files and to create new directories For detailed description see chapter 4 7 2 File Manager on page 94 SCPI command SOURce hw...

Страница 324: ...ert or overwrite mode SCPI command SOURce hw BB DM DLISt SELect on page 578 SOURce hw BB DM DLISt DATA on page 577 SOURce hw BB DM DLISt DATA APPend on page 577 GoTo Data List Editor Opens the entry window for the bit position The cursor marks the bit at the selected position SCPI command n a Start Select Data List Editor Defines the current cursor position as the start position for the range to b...

Страница 325: ...enu by means of the Edit Control List button The available marker signals and the CW Hop Burst Gate and Level Attenuation control signals can be defined in the Control and Marker List Editor The marker signals defined in the Control and Marker List Editor are activated by selecting the Marker mode CList in the Trigger Marker Clock menu The control signals have to be activated by selecting an Inter...

Страница 326: ... Signal section in the lower right corner To make the setting easy a selection of preset ramp characteristics is offered in the Preset Ramp Sig nal section Edit Control List The configuration of the currently selected control list is displayed This list is either selected in the File Select menu List Management submenu by means of the Control List button or via the remote control command SCPI comm...

Страница 327: ...of the BACKSPACE key after the cursor has been placed on the ramp For detailed information on how to operate the control and marker list editor see chap ter 4 5 3 Working with Control and Marker List Editor on page 87 SCPI command n a Total List Length Digital Modulation Enters the length of the definition range of the control list in bits The starting value is always bit 0 The entire definition r...

Страница 328: ...of the displayed signal area and can subsequently be shifted as required SCPI command n a Cursor Position Digital Modulation Enters the cursor position In the graphic display the cursor is positioned according to the entry Vice versa graphically shifting the cursor will change the displayed value If the entered value exceeds the selected length of the definition range the length is adjusted automa...

Страница 329: ...e changes made to the CList file selected for editing Selecting the Save As button creates a new control list This opens the Create Lists Files Which Name window in which the control list can be created The file name has to be entered in field File Name SCPI command n a Power Ramp Control The Power Ramp Control menu is accessed via the Custom Digital Modulation main menu The menu is used to set th...

Страница 330: ...ling edges during power ramp control Linear The transmitted power rises and falls linear fashion Cosine The transmitted power rises and falls with a cosine shaped edge This gives rise to a more favorable spectrum than the Linear setting SCPI command SOURce hw BB DM PRAMp SHAPe on page 570 Ramp Time Digital Modulation Enters the power ramping rise time and fall time for a burst The setting is expre...

Страница 331: ...nvelope length decreases The setting is expressed in sym bols SCPI command SOURce hw BB DM PRAMp FDELay on page 570 Attenuation Power Ramp Control Digital Modulation Sets the level attenuation relative to the average level for the signal ranges in which the level is set to attenuated LEV_ATT control signal The LEV_ATT control signal is defined in the Control Data Editor SCPI command SOURce hw BB D...

Страница 332: ...menu The Trigger In section is where the trigger for the modulation signal is set Various parameters will be provided for the settings depending on which trigger source internal or external is selected The current status of signal generation Running or Stop ped is indicated for all trigger modes The Marker Mode section is where the marker signals at the MARKER output connec tors are configured The...

Страница 333: ...er event internal with Execute Trigger or external causes a restart Single The digital modulation signal is generated only when a trigger event occurs Then the signal is generated once to the length specified at Signal Duration Every subsequent trigger event internal with Exe cute Trigger or external causes a restart SCPI command SOURce hw BB DM TRIGger SEQuence on page 559 Trigger Signal Duration...

Страница 334: ...ER con nector The polarity the trigger threshold and the input impedance of the TRIG GER input can be set in the GLOBAL TRIGGER SETTINGS menu SCPI command SOURce hw BB DM TRIGger SOURce on page 558 Sync Output to External Trigger enabled for Trigger Source External Enables disables output of the signal synchronous to the external trigger event For or two or more R S SMBVs configured to work in a m...

Страница 335: ...e signal is outputted This mode is recommended for triggering of short signal sequences with signal duration comparable with the processing time of the instru ment SCPI command SOURce hw BB DM TRIGger EXTernal SYNChronize OUTPut on page 555 External Delay Digital Modulation Sets trigger signal delay in symbols on external triggering This enables the R S SMBV to be synchronized with the device unde...

Страница 336: ... marker signal that is defined in the selected control list is generated Pulse A regular marker signal is generated The clock frequency is defined by entering a divider The frequency is derived by dividing the sample rate by the divider The input box for the divider opens when Pulse is selected and the resulting pulse frequency is displayed below it SCPI command SOURce hw BB DM TRIGger OUTPut ch P...

Страница 337: ...ker outputs and the start of the signal The input is expressed as a number of symbols If the setting Fix marker delay to dynamic range is enabled the setting range is restricted to the dynamic range In this range the delay of the marker signals can be set without restarting the marker and signal The allocation of marker signals to the outputs is described in the section chapter 5 8 2 7 Marker Outp...

Страница 338: ...ranching points None The instrument is working in stand alone mode Sync Master The instrument provides all connected instrument with its synchronisa tion including the trigger signal and reference clock signal Sync Slave The instrument receives the synchronisation and reference clock signal from another instrument working in a master mode SCPI command SOURce hw BB DM CLOCk SYNChronization MODE on ...

Страница 339: ... CLOCK connector Multiple Sym bol A multiple of the symbol clock is supplied via the CLOCK connector the symbol clock is derived internally from this The Multiplier window provided allows the multiplication factor to be entered SCPI command SOURce hw BB DM CLOCk MODE on page 552 Symbol Clock Multiplier Digital Modulation Enters the multiplication factor for clock type Multiple SCPI command SOURce ...

Страница 340: ...the calculation and the generation of multi segment and mutli carrier waveform files Several digital standards provide the special function Generate Waveform File and enable the calculation and storage of the signal as a waveform file that can be afterwards processed by the ARB generator The ARB can also process externally generated waveform files e g the waveform files generated on a PC by the Wi...

Страница 341: ...to reach a target digital output I Q sample rate before digital to analog conver sion DAC The input sample rate finput is given by the default sample rate tag of the waveform file or is set by the user in the ARB panel Depending on the hardware option R S SMBV B10 B50 or B51 a 150 MHz or 90 MHz system clock rate is used The resampling lowpass limits the signal bandwidth to a maximum of 1 36 x finp...

Страница 342: ...als that are sent to the marker outputs in synchronicity with the I Q output signals Marker singals can be either predefined or subsequently defined marker setting such as delay can be adjusted in the corresponding Trigger Marker Clock Settings dialog The I Q data and marker data are located in separate memory areas of the SDRAM and can be independently configured wheras each marker signal require...

Страница 343: ...it is automatically repeated until it reaches the minimum length 5 8 4 1 ARB User Interface To access the ARB dialog select Baseband ARB or use the MENU key under Base band The ARB dialog is divided into an upper and a lower general part together with a Marker section The upper part of the menu is used for powering up selecting and configuring ARB mod ulation The section Multi Segment Waveform Opt...

Страница 344: ...n Multi Segment Waveform Options of the menu is only displayed if a multi segment waveform is loaded The section comprises the settings necessary to adjust the trigger for the switch between the segments of a multi segment waveform The parameters displayed depend on the selected trigger source The parameters in this sections are identical with the parameters in the section Next Segment Trigger In ...

Страница 345: ...mmand SOURce hw BB ARB STATe on page 505 Set To Default Calls default settings The values are shown in the table 5 10 Table 5 10 Default Settings Parameter Value State Off Clock Freq 1 MHz Trigger Mode Auto Trigger Source Internal Marker State Off Marker Mode Unchanged Clock Source Internal SCPI command SOURce hw BB ARB PRESet on page 505 Load Waveform Calls the File Select menu for loading the wa...

Страница 346: ...is a multi segment one or not All parameters are read only For non multi segment waveform files the values of the settings can be queried by means of the Tag commands see chapter 7 3 R S Signal Generator Waveform and List For mat on page 439 SCPI command n a Clock Frequency Displays or enters the ARB output clock rate When the waveform file is loaded this value is automatically set to the clock ra...

Страница 347: ...w BB ARB TRIGger EXECute on page 509 Clock Calls the Clock menu The Clock menu is used to select the clock source see Clock Settings on page 343 SCPI command n a Create Test Signal Selects the form of the test signal and calls the menu for generating it A sinusoidal rectangular or test signal with constant I Q can be selected See the corresponding section for detailed description of the parameters...

Страница 348: ...al generation Running or Stopped is indicated for all trigger modes The Next Segmet Trigger In is where the segment triggering is configured This section is enabled only for multi segment waferoms The Marker Mode section is where the marker signals at the MARKER output connec tors are configured The Marker Delay section is where a marker signal delay can be defined either without restriction or re...

Страница 349: ...elects trigger mode The trigger mode determines the effect of a trigger on the signal generation Auto The signal is generated continuously Retrigger The signal is generated continuously A trigger event internal or exter nal causes a restart Armed_Auto The signal is generated only when a trigger event occurs Then the signal is generated continuously Button Arm stops signal generation A subsequent t...

Страница 350: ...ons of the signal SCPI command SOURce hw BB ARB TRIGger SLENgth on page 512 Running Stopped Displays the status of signal generation for all trigger modes This display appears only when signal generation is enabled State On Running The waveform is output a trigger was internally or externally initiated in triggered mode If Armed_Auto and Armed_Retrigger have been selected genera tion of signals ca...

Страница 351: ...ger SOURce on page 513 Sync Output to External Trigger enabled for Trigger Source External Enables disables output of the signal synchronous to the external trigger event For R S SMBV instruments For or two or more R S SMBVs configured to work in a master slave mode for synchro nous signal generation configure this parameter depending on the provided system trig ger event and the properties of the...

Страница 352: ...ode is recommended for triggering of short signal sequences with signal duration comparable with the processing time of the instru ment SCPI command SOURce hw BB ARB TRIGger EXTernal SYNChronize OUTPut on page 509 Trigger Delay Sets the trigger signal delay in samples on external triggering or on internal triggering via the second path Sets the trigger signal delay in samples on external triggerin...

Страница 353: ...rnal next segment trigger event or for the internal trigger case by changing the segment index in the Next Segment field The definition whether the new segment is generated immediately or only after the previous segment has been fully generated wrap around is determined by the parameter Next Segment Mode The segment currently being output segment index and file name is displayed at Cur rent Segmen...

Страница 354: ...t segment has been output wrap around In this case the signal transition is seamless As a prerequisite for a seamless switchover all segments must have the same sample rate The following figure shows an example of the seamless transition from a sinewave signal segment to a sawtooth segment I channel above in the case of next segment external triggering below The regular trigger mode for starting t...

Страница 355: ...segment is then generated continuously Further trigger events are ignored If the segment is changed in Next Segment signal output is stop ped and the new segment is not output until a trigger occurs In the case of Trigger Retrigger output starts at once and the segment is generated continuously a trigger event causes a restart If the segment is changed in Next Segment output of the current segment...

Страница 356: ...e of External Trigger Auto output starts at once and the segment is generated continuously Further trigger events are ignored Each next segment trigger event switches over to outputting the subsequent segment following a system imposed signal gap If the segment index is changed in Next Segment output of the current segment is stopped and the new segment is output imme diately following a system im...

Страница 357: ...t starts after the first trigger event The segment is then generated continuously Each trigger event re starts the segment each next segment trig ger event switches over to outputting the subsequent segment once the output of the current segment has been completed If the segment is changed in Next Segment signal output is stop ped and the new segment is not output until a trigger occurs The remain...

Страница 358: ...rigger can be executed only when an internal Next Segment Source has been selected To perform a switchover to any segment within the multi segment file adjust the param eter Next Segment This parameter is disabled if a sequencing play list is enabled SCPI command SOURce hw BB ARB WSEGment NEXT EXECute on page 547 Sequencing List Open a dialog box for defining the play lists see Multi Segment Wavef...

Страница 359: ...ULSe DIVider on page 517 SOURce hw BB ARB TRIGger OUTPut ch PULSe FREQuency on page 517 Pattern A marker signal that is defined by a bit pattern is generated The pattern has a maximum length of 64 bits and is defined in an input field which opens when pattern is selected The pattern bits switch the marker signal to high and low state SCPI command SOURce hw BB ARB TRIGger OUTPut ch PATTern on page ...

Страница 360: ...nge the delay can be set without restarting the marker and signal SCPI command SOURce hw BB ARB TRIGger OUTPut DELay FIXed on page 510 Clock Settings The Clock Settings is used to set the clock source and a delay if required Sync Mode Selects the synchronization mode This parameter is used to enable generation of very precise synchronous signal of several connected R S SMBVs Note If several instru...

Страница 361: ...bol rate must be correctly set to an accuracy of 2 see data sheet The polarity of the clock input can be changed with the aid of Global Trigger Clock Settings SCPI command SOURce hw BB ARB CLOCk SOURce on page 507 Clock Mode Enters the type of externally supplied clock Sample A sample clock is supplied via the CLOCK connector Multiple Sam ple A multiple of the sample clock is supplied via the CLOC...

Страница 362: ...r Clock External Input Settings on page 121 Sine Test Signals To access the Sine Test Signals dialog in the ARB MOD dialog set the parameter Create Test Signal to Sine and press Create Test Signal The menu can be used to configure a sinusoidal test signal A sine wave is generated on the I path and a sine wave of the same frequency but phase shifted is generated on the Q path The signal actually se...

Страница 363: ...veform file SCPI command SOURce hw BB ARB TSIGnal SINE CREate NAMed on page 518 Generate Signal RAM Sine Test Signal Generates a signal and uses it as output straight away SCPI command SOURce hw BB ARB TSIGnal SINE CREate on page 518 Rect Test Signal To access the Sine Test Signals dialog in the ARB MOD dialog set the parameter Create Test Signal to Rect and press Create Test Signal The dialog can...

Страница 364: ...ow opens automatically and the signal can be stored as a waveform file SCPI command SOURce hw BB ARB TSIGnal RECTangle CREate NAMed on page 518 Generate Signal RAM Rect Test Signal Generates a signal and uses it as output straight away SCPI command SOURce hw BB ARB TSIGnal SINE CREate on page 518 Const IQ Test Signal To access the Sine Test Signals dialog in the ARB MOD dialog set the parameter Cr...

Страница 365: ...ent waveform that can be output with its own marker and clock settings The entire multi segment waveform is loaded into memory The segment intended to be output at any given moment can be selected by the user It is therefore possible to alter nate between the individual waveform segments without experiencing any delay due to the loading operation If very high switchover speeds are required the tes...

Страница 366: ...e extension is inf_mswv This method can be used to create any number of configurations as a basis for defining further multi segment waveforms Example for the creation of a multi segment waveform file 1 Select New List to create empty list 2 Use the Append function to add two or more waveform files 3 Adjust the Level Clock and Segment Marker settings 4 Select the Output File and enter file name 5 ...

Страница 367: ... Clock Rate Indication of the clock rate of the segment Samples Indication of the number of samples in the segment Period Indication of the segment duration Path Indication of the location of the waveform file used for the corresponding segment Comment Indication of the comment on the segment Info Opens a dialog with detailed information about the currently selected waveform SCPI command n a Appen...

Страница 368: ...w BB ARB WSEGment CONFigure BLANk APPend on page 540 Level Clock Marker The Level Marker Clock section provides the parameters necessary to adjust the level marker and clock settings for the selected multi segment waveform file Level Defines the level mode for the multi segment waveform Unchanged Conserning the level settings the segments are output exactly as defined in the files The Level displa...

Страница 369: ...page 541 User Clock Rate Defines the sample rate used for multi segment waveform output in case of Clock Mode User SCPI command SOURce hw BB ARB WSEGment CONFigure CLOCk on page 541 Segment Marker Defines the way the marker information within the separate segments is processed Ignore The marker information carried in the individual segment waveform files is not considered Take Over The output wave...

Страница 370: ...d SOURce hw BB ARB WSEGment CONFigure COMMent on page 542 Output file Opens the File menu where the file name of the multi segment waveform which has to be calculated can be entered The multi segment waveform is saved under this name by clicking the Create or Create and Load button A name must also be entered here before the list can be saved as a configuration file Save List In this case the name...

Страница 371: ...mmand SOURce hw BB ARB WSEGment CONFigure SELect on page 545 Define Sequencing List Open a dialog box for configuring of the play lists see Multi Segment Waveform Sequencing on page 355 SCPI command n a Create Creates a new multi segment waveform using the current table entries This multi segment waveform is saved with the file name specified in Output File As with normal waveforms the file extens...

Страница 372: ...e 539 Multi Segment Waveform Sequencing The settings provided in the Multi Segment Waveform Sequencing dialog can be adjus ted to crate a play list i e to define the sequence in which the waveform file segments are processed and how many times each of them is repeated The configured play list is displayed in form of a Sequencing Graphic All segments in a play list must have the same clock rate In ...

Страница 373: ... table is used to define the sequence in which the waveform file segments are processed and how many times each of them is repeated Id Sequencing Play List Indication of the row number n a State Sequencing Play List Enables disables the selected row Only active segments are processed n a Segment Sequencing Play List Indication of segment index The sequencing list file carries information only abou...

Страница 374: ... are considered Goto Id Determines the row number of the segment to be processed next This feature is currently limited for the first 32 rows SCPI command n a Info Sequencing Play List Opens a dialog with detailed information about the currently selected waveform See also Waveform Info on page 329 SCPI command n a Append Inserts a new row at the end of the sequencing play list table SCPI command S...

Страница 375: ...hput requires extremely fast switchovers for instance when testing ATE devices during manufacture The following settings enable switching times of approx 5 us and the test signals are scrolled through with the aid of an external trigger signal 1 Trigger Mode Auto 2 Trigger Source External Trigger 3 If the waveforms have different sample rates Clock Mode Highest or User when creating the waveform i...

Страница 376: ...band signals e g CDMA2000 or 3GPP FDD The carriers are equally spaced and centered toward the RF frequency or baseband DC line respectively The carrier spacing is adjustable within the total available baseband bandwidth of 80 MHz Each carrier can be separately defined in terms of power phase and modulated input signal Optionally crest factor optimization can be applied Thus multi carrier waveforms...

Страница 377: ... Settings section indicates the name the size and the clock rate of the multi carrier waveform after calculation The buttons in the lower part of the menu activate creation and optionally loading of multi carrier waveform files into the main ARB menu Default Settings and State The upper part of the dialog is used for calling the default settings and saving and recalling existing ARB multi carrier ...

Страница 378: ...aved by pressing the Save button The Fast Save checkbox determines whether the instrument performs an absolute or a differential storing of the settings Enable this function to accelerate the saving process by saving only the settings with values different to the default ones Fast Save is not affected by the Pre set function File Manager Calls the File Manager The File Manager is used to copy dele...

Страница 379: ...hat way that the carrier closest to the center RF fre quency shows no phase jump assuming that the carrier is unmodulated For odd number of carriers RoundedCarrierSpacing 1 OutputSignalDuration round CarrierSpacing Output SignalDuration For even number of carriers RoundedCarrierSpacing 2 OutputSignalDuration round 0 5 CarrierSpacing Out putSignalDuration SCPI command SOURce hw BB ARB MCARrier CARR...

Страница 380: ...f frequency is set as half of the output sample rate a final lowpass filter improves the spectrum of the clipped multicarrier signal but may also increase the result ing crest factor SCPI command SOURce hw BB ARB MCARrier CLIPping CUToff on page 526 Signal Period Mode Selects the mode for calculating the resulting signal period of the multi carrier waveform The carrier table provides an informatio...

Страница 381: ...e Muti Carrier Table on page 365 The multi carrier configuration can be checked with the aid of the Carrier Graph Carrier Graph Calls a graphical representation of the current multi carrier configuration in the frequency domain The height of the bars corresponds to the chosen gain of each individual carrier The bandwidth of the carriers signals is indicated by the width of the bars Output Settings...

Страница 382: ...n Abort button appears during the calculation process SCPI command SOURce hw BB ARB MCARrier CREate on page 528 Create and Load Creates a new multi carrier waveform defined by the multi carrier table and General Set ting entries and loads it subsequently in the ARB main menu This multi carrier waveform is saved with the file name specified in Output File If no file name is specified the File Manag...

Страница 383: ...r EDIT CARRier STATe on page 532 Carrier Start Defines the start index of the carrier range to which the assistant settings are intended to apply SCPI command SOURce hw BB ARB MCARrier EDIT CARRier STARt on page 531 Carrier Stop Defines the stop index of the carrier range to which the assistant settings are intended to apply SCPI command SOURce hw BB ARB MCARrier EDIT CARRier STOP on page 531 Gain...

Страница 384: ... EDIT CARRier POWer STEP on page 531 Delay Start Sets the delay of the carrier marked by Carrier Start SCPI command SOURce hw BB ARB MCARrier EDIT CARRier DELay STARt on page 529 Delay Step Sets the step width that is used to increment the delay The resulting delay in the carrier table equals DelayStart n DelayStep where n ranges from 0 to Carrier Stop Carrier Start SCPI command SOURce hw BB ARB M...

Страница 385: ... Table Switches On Off a carrier SCPI command SOURce hw BB ARB MCARrier CARRier ch STATe on page 525 Carrier Freq MHz Carrier Table Sets the carrier frequency Note The carrier frequnecy can only be set in Arbitrary Carrier frequency mode For Equidistant Carrier Spacing the carrier spacing is determined automatically SCPI command SOURce hw BB ARB MCARrier CARRier ch FREQuency on page 524 Gain Carri...

Страница 386: ... red LED A conflict arises when the carriers overlap Example A conflict is indicated both in the table as well as in the graph as shown in the following figures example without carrier conflicts example with carrier conflicts SCPI command SOURce hw BB ARB MCARrier CARRier ch CONFlict on page 523 Typical Applications for Multi Carrier Waveforms High Power Amplifiers of multi carrier base stations f...

Страница 387: ... carriers can be jointly configured Automatic start phase setting is provided in order to minimize the crest factor Multi Carrier CW signals can be very easily configured as broadband test signals and used for such purposes as receiver tests To access the dialog for setting a Multi Carrier CW signal select Baseband Multi Car rier CW or use MENU key under Baseband 5 8 5 1 Multi Carrier CW User Inte...

Страница 388: ...r CW Switching on this standard turns off all the other digital standards and digital modulation modes Since Multi Carrier CW signals are computed in arbitrary waveform mode changes to the settings of individual carriers are not adopted until the Accept button is pressed This applies to the settings in the Table Setup Assistant section and the Carrier Table dialog SCPI command SOURce hw BB MCCW ST...

Страница 389: ...0 State ON Power 0 dB Power Step 0 dB Initial Phase 0 Phase Step 0 Channel Setup State ON Phase 0 Power 0 dB SCPI command SOURce hw BB MCCW PRESet on page 590 Carrier Setup The Carrier Setup section is used to configure the Multi Carrier CW Number of Carriers Sets the number of carriers for the Multi Carrier CW signal By default the multi carrier table already lists 64 carriers that are preset to ...

Страница 390: ...r generation SCPI command SOURce hw BB MCCW CLOCk on page 595 Optimize Crest Factor Mode Selects the mode for automatically minimizing the crest factor The carrier start phases are automatically set to this The crest factor represents the ratio of the peak voltage value to the rms voltage value The higher the crest factor and resulting dynamics of a signal the greater the requirement for a power a...

Страница 391: ...nd SOURce hw BB MCCW CFACtor on page 594 Table Setup Assistant The Table Setup Assistant section can be used to set a selectable carrier range The carrier table can be edited in the Carrier Table dialog Carrier Start Defines the start index of the carrier range to which the following settings are intended to apply SCPI command SOURce hw BB MCCW EDIT CARRier STARt on page 598 Carrier Stop Defines t...

Страница 392: ...e within the valid value range 0 to 360 This setting is only available for Optimize Crest Factor Mode Off SCPI command SOURce hw BB MCCW EDIT CARRier PHASe STEP on page 596 Accept Adopts the carrier range setting into the table Carrier Table SCPI command SOURce hw BB MCCW EDIT CARRier EXECute on page 596 Carrier Table and Carrier Graph The lower part of the menu is used to open submenus for config...

Страница 393: ...carrier Accept Transfer the settings in the carrier table into the instrument SCPI command SOURce hw BB MCCW CARRier LIST STATe on page 592 SOURce hw BB MCCW CARRier STATe on page 594 SOURce hw BB MCCW CARRier LIST POWer on page 592 SOURce hw BB MCCW CARRier POWer on page 593 SOURce hw BB MCCW CARRier LIST PHASe on page 591 SOURce hw BB MCCW CARRier PHASe on page 593 Carrier Graph Calls a graphica...

Страница 394: ...elect Main Menu Trigger Marker The Trigger In section is where the trigger for the signal is set Various parameters will be provided for the settings depending on which trigger source internal or external is selected The current status of signal generation Running or Stopped is indicated for all trigger modes The Marker Mode section is where the marker signals at the MARKER output connec tors are ...

Страница 395: ...elects trigger mode The trigger mode determines the effect of a trigger on the signal generation Auto The signal is generated continuously Retrigger The signal is generated continuously A trigger event internal or exter nal causes a restart Armed_Auto The signal is generated only when a trigger event occurs Then the signal is generated continuously Button Arm stops signal generation A subsequent t...

Страница 396: ...nternally or exter nally initiated in triggered mode If Armed_Auto and Armed_Retrigger have been selected genera tion of signals can be stopped with the Arm button A new trigger internally with Execute Trigger or externally causes a restart Stopped The signal is not generated and the instrument waits for a trigger event internal or external SCPI command SOURce hw BB MCCW TRIGger RMODe on page 601 ...

Страница 397: ... and the properties of the output signal See the table below for an overview of the required settings Table 5 12 Typical Applications System Trigger Application Sync Output to External Trig ger Common External Trigger event for the master and the slave instru ments All instruments are synchronous to the external trigger event ON All instruments are synchronous among themselves but starting the sig...

Страница 398: ...ed with the device under test or other external devices SCPI command SOURce hw BB MCCW TRIGger EXTernal ch DELay on page 602 Trigger Inhibit Sets the duration for inhibiting a new trigger event subsequent to triggering The input is to be expressed in samples In the Retrigger mode every trigger signal causes signal generation to restart This restart is inhibited for the specified number of samples ...

Страница 399: ...d OFF Time are each expressed as a number of samples and are set in an input field which opens when ON OFF ratio is selected SCPI command SOURce hw BB MCCW TRIGger OUTPut ch ONTime on page 606 SOURce hw BB MCCW TRIGger OUTPut ch OFFTime on page 606 SCPI command SOURce hw BB MCCW TRIGger OUTPut ch MODE on page 605 Marker Delay The delay of the signals on the MARKER outputs is set in the Marker Dela...

Страница 400: ...connecting cables from the master instrument to the slave one and between each two consecutive slave instruments must have the same length and type Avoid unnecessary cable length and branching points None The instrument is working in stand alone mode Sync Master The instrument provides all connected instrument with its synchronisa tion including the trigger signal and reference clock signal Sync S...

Страница 401: ...oduced clock This information is displayed only if the external clock source has been selected SCPI command CLOCk INPut FREQuency 5 9 External Baseband Signal Baseband Input The R S Signal Generator makes it possible to feed an external analog or digital base band signal into the signal path User specific wanted signals or interference signals can be detuned or loaded with noise see description ch...

Страница 402: ... the sample rate of the external digital signals is 400 Hz to 100 MHz The resampler operates in such a way that a baseband signal with a sample rate of less than 100 MHz is interpolated on the 100 MHz sample rate and then used as output A sample rate less than 100 MHz must fulfill the following condition Sample Rate 0 31 Modulation Bandwidth With a sample rate of 100 MHz Sample Rate Source User De...

Страница 403: ...Out function block Select Baseband Input Settings in the menu to open the Baseband Input Settings dialog see chapter 5 9 1 1 Baseband Input Settings Menu on page 386 The menu additioanlly provides access to the Baseband Output Settings dialog see chapter 5 7 Digital I Q Output Settings on page 267 and the entry of frequency and phase offset 5 9 1 1 Baseband Input Settings Menu The settings for the...

Страница 404: ...ngs dialog The sample rate of the external digital baseband signal can be set and the state of signal transmission is indicated by the FIFO Status Sample Rate Source Selects the source for estimating the sample rate or defining it by the user User Defined Enables the user to define the sample rate in the entry field value Digital I Q In Estimates the sample rate on the digital I Q input and displa...

Страница 405: ...d transmitter and recognizes changes automatically SCPI command SOURce hw BBIN DIGital ASETting STATe on page 611 Measurement Period Sets the recording duration for measuring the baseband input signal by Auto Level Set For accurate level measurements the measurement period should be set to a time value that is long enough to capture several periods of the input signal SCPI command SOURce hw BBIN M...

Страница 406: ...d either the amplitude of the external signal is too high full scale of 0 5 V and must be reduced or the entered Peak Level in dB full scale value does not correspond with the real value and must be corrected It also can be evaluated automat ically with button Auto Level Set SCPI command SOURce BBIN OLOad STATe on page 613 Overload Hold Indicates an overload since last reset for evaluating the mea...

Страница 407: ...ffset for the external baseband signal The offset affects the signal on the output of the Baseband In Out block It shifts the useful baseband signal in the center frequency The complex I Q bandwidth of the shifted useful signal must not exceed 120 MHz in total see also Frequency Offset on page 272 The following applies foffset fuse 2 120 MHz 2 and foffset fuse 2 120 MHz 2 fuse the complex useful b...

Страница 408: ...eful bandwidth is calculated as follows fuse 1 0 22 3 84 MHz 4 6848 MHz So as to comply with the condition requiring a maximum I Q bandwidth of 40 MHz the valid range of values for the frequency offset is then 60 MHz 4 6848 MHz 2 foffset 60 MHz 4 6848 MHz 2 or 57 6576 MHz foffset 57 6576 MHz In the case of ARB signals the output clock rate can be used for estimating the maximum I Q bandwidth of th...

Страница 409: ... 5 Serial Interface on page 397 GPIB IEC IEEE Bus Interface VISA address string GPIB primary address INSTR no secondary address Optional GPIB bus interfaces according to standard IEC 625 1 IEEE 488 1 are located on the rear panel of the instrument For a description of the interface refer to chapter 6 1 6 GPIB Interface IEC IEEE Bus Interface on page 398 VISA is a standardized software interface li...

Страница 410: ... user documentation 6 1 2 Messages The messages transferred on the data lines are divided into the following categories Interface messages Interface messages are transmitted to the instrument on the data lines with the attention line being active LOW They are used to communicate between the con troller and the instrument Interface messages can only be sent by instruments that have GPIB bus functio...

Страница 411: ...er after a query They can contain measurement results instrument settings and information on the instrument status 6 1 3 LAN Interface To be integrated in a LAN the instrument is equipped with a LAN interface consisting of a connector a network interface card and protocols For remote control via a network the PC and the instrument must be connected via the LAN interface to a common network with TC...

Страница 412: ... SOCKET Identifying instruments in a network If several instruments are connected to the network each instrument has its own IP address and associated resource string The controller identifies these instruments by means of the resource string 6 1 3 1 HiSLIP Protocol The HiSLIP High Speed LAN Instrument Protocol is the successor protocol for VXI 11 for TCP based instruments specified by the IVI fou...

Страница 413: ...on the remote con troller side The simplest way to establish socket communication is to use the built in telnet program The telnet program is part of every operating system and supports a communication with the software on a command by command basis For better utilization and to enable auto mation by means of programs user defined sockets can be programmed Socket connections are established on a s...

Страница 414: ...to enter an address string or install a separate driver USB address The used USB address string is USB vendor ID product ID serial number INSTR where vendor ID is the vendor ID for Rohde Schwarz product ID is the product ID for the R S instrument serial number is the individual serial number on the rear of the instrument Example USB 0x0AAD 0x005F 100001 INSTR 0x0AAD is the vendor ID for Rohde Schw...

Страница 415: ...ess see chapter 6 1 6 2 GPIB Instrument Address on page 399 Characteristics The GPIB interface is described by the following characteristics Up to 15 instruments can be connected The total cable length is restricted to a maximum of 15 m the cable length between two instruments should not exceed 2m A wired OR connection is used if several instruments are connected in parallel since the slowest inst...

Страница 416: ... previously active instrument function e g a sweep The effect of the command is the same as with that of a pulse at the external trigger signal input GTL Go to Local Transition to the local state manual control GTR Go to Remote Transition to the remote state remote control PPC Parallel Poll Configure Configures the instrument for parallel poll SDC Selected Device Clear Aborts the processing of the...

Страница 417: ... Serial Interface on page 397or chapter 6 1 6 GPIB Interface IEC IEEE Bus Interface on page 398 for details The VISA resource strings are indicated in the Setup Remote Channel Settings menu Refer to chapter 6 2 3 Examples on page 402 for practical examples on setting up of a remote control link and starting of a remote control session 6 2 1 Switching to Remote Control When it is switched on the in...

Страница 418: ...manual operation disable the LOCAL key of the instrument using the LLO command see chapter 6 1 3 4 LAN Interface Mes sages on page 396 The instrument switches to REM LLO state and transition to manual mode is not anymore possible via the remote control command GTL Switching to manual mode is only possible via remote control then 4 Enable the LOCAL key with the interface message NREN 6 2 2 Returnin...

Страница 419: ...asurement product_categories signal_generation Starting a remote control session over GPIB As a prerequisite the GPIB address of the instrument which is factory set to 28 must not have been changed 1 Connect instrument and controller using GPIB cable and switch them on 2 Execute following commands on the controller a Open port to the instrument CALL IBFIND DEV1 generator b Inform controller about ...

Страница 420: ... enable the external controller to communicate with the software via TCP IP protocol set up a remote control link as follow 1 Connect the controller and the instrument to the network network cable and switch them on 2 Start the Measurement Automation Control program on the controller 3 Select Devices and Interfaces Create New 4 Select VISA TCP IP Resource and confirm with Next 5 Choose the type of...

Страница 421: ...he computer name It is only used for instrument identification within the program and displayed in the menu as an option in case of an Ethernet link 8 Confirm the settings with Finish The instrument is configured and the settings are displayed in the TCP IP Set tings tab 9 To test the connection select Validate A message indicates whether the link to the instrument can be set up or not Starting a ...

Страница 422: ...addresses may be required for link setup e g gateway and subnet mask which are known to the network administrator The instrument is now registered in the program and can be addressed via the resource string or alias name Starting a remote control over LAN using VXI 11 1 Start the Measurement Automation Explorer on the controller 2 In the Configuration window select Device and Interfaces VISA TCP I...

Страница 423: ... further devel oped Setting up a Telnet Connection To control the software only a telnet program is required The telnet program is part of every operating system 1 To establish a Telnet connection with the R S SMBV start the telnet program and enter the socket address The socket address is a combination of the IP address or the host name of the R S SMBV and the number of the port configured for re...

Страница 424: ...screen enter blind a remote control command and confirm with Enter After the first remote control command had been send the instrument is in the REMOTE state i e instrument control from the front panel or via mouse and key board is disabled and REMOTE is displayed in the status line Starting a Remote Control Session ...

Страница 425: ...ct sockaddr_in SockAddrStruct typedef struct hostent HostInfoStruct class TcpClient public TcpClient TcpClient void connectToServer string hostname int port void disconnect void transmit string txString void receive string rxString string getCurrentHostName const int getCurrentPort const private string currentHostName int currentPort int currentSocketDescr SockAddrStruct serverAddress HostInfoStru...

Страница 426: ...n h include unistd h include TcpClient h TcpClient TcpClient currentHostName currentPort 0 currentSocketDescr 0 serverAddress currentHostInfo NULL clientIsConnected false receiveBufferSize 1024 TcpClient TcpClient currentHostInfo NULL void TcpClient connectToServer string hostname int port currentHostInfo gethostbyname hostname c_str if currentHostInfo NULL currentHostName currentPort 0 currentHos...

Страница 427: ...connect if clientIsConnected close currentSocketDescr currentSocketDescr 0 currentHostName currentPort 0 currentHostInfo NULL clientIsConnected false void TcpClient transmit string txString if clientIsConnected throw string connection must be established before any data can be sent n char transmitBuffer new char txString length 1 memcpy transmitBuffer txString c_str txString length transmitBuffer ...

Страница 428: ...ivedByteCount receiveBufferSize delete receiveBuffer string TcpClient getCurrentHostName const return currentHostName int TcpClient getCurrentPort const return currentPort TelnetClient cpp include iostream include TcpClient h void printUsage cout usage EthernetRawCommand server ip scpi command endl int main int argc char argv int errorCode 0 no error bool useSingleCommand false string singleComman...

Страница 429: ...nput singleCommand send string else cin getline buffer 1024 input buffer if input end terminate true if terminate client transmit input send string int qPos input find 0 receive string only when needed if qPos 0 string rcStr client receive rcStr cout rcStr endl if useSingleCommand terminate true catch const string errorString cout errorString endl client disconnect return errorCode Starting a Remo...

Страница 430: ... directly to the header The commands can be either device specific or device independent common com mands Common and device specific commands differ in their syntax 6 3 1 Syntax for Common Commands Common device independent commands consist of a header preceded by an asterisk and possibly one or more parameters Examples RST RESET Resets the instrument ESE EVENT STATUS ENABLE Sets the bits of the e...

Страница 431: ...numeric value SENSe LIST FREQuency numeric_value numeric_value Long and short form The mnemonics feature a long form and a short form The short form is marked by upper case letters the long form corresponds to the complete word Either the short form or the long form can be entered other abbreviations are not permitted Example HCOPy DEVice COLor ON is equivalent to HCOP DEV COL ON Case insensitivit...

Страница 432: ... The instru ment must recognize the long command to comply with the SCPI standard Some com mands are considerably shortened by these optional mnemonics Example Definition HCOPy IMMediate Command HCOP IMM is equivalent to HCOP Optional mnemonics with numeric suffixes Do not omit an optional mnemonic if it includes a numeric suffix that is relevant for the effect of the command Example Definition DI...

Страница 433: ...nSENSE BANDwidth BWIDth RESolution numeric_value The two following commands with identical meaning can be created SENS BAND RES 1 SENS BWID RES 1 Mnemonics in square brackets are optional and may be inserted into the header or omitted Example HCOPy IMMediate HCOP IMM is equivalent to HCOP Parameters in curly brackets are optional and can be inserted once or several times or omitted Example SENSe L...

Страница 434: ...ties the unit can be entered Allowed unit prefixes are G giga MA mega MOHM MHZ K kilo M milli U micro N nano If the unit is missing the basic unit is used Example SENSe FREQ STOP 1 5GHz SENSe FREQ STOP 1 5E9 Some settings allow relative values to be stated in percent According to SCPI this unit is represented by the PCT string Example HCOP PAGE SCAL 90PCT Special numeric values The texts listed be...

Страница 435: ...ey must be entered following the quotation mark Example SENSe LIST FREQ MAXimum Returns the maximum numeric value as a result Boolean Parameters Boolean parameters represent two states The ON state logically true is represented by ON or a numeric value 1 The OFF state logically untrue is represented by OFF or the numeric value 0 The numeric values are provided as the response for a query Example S...

Страница 436: ...ul when the length of the transmission is not known or if speed or other considerations prevent segmentation of the data into blocks of definite length 6 3 4 Overview of Syntax Elements The following table provides an overview of the syntax elements The colon separates the mnemonics of a command In a command line the separating semicolon marks the uppermost command level The semicolon separates tw...

Страница 437: ...i e they have one level in common When abbreviating the command line the second command begins with the level below HCOP The colon after the semicolon is omitted The abbreviated form of the command line reads as follows HCOP ITEM ALL IMM A new command line always begins with the complete path Example HCOP ITEM ALL HCOP IMM 6 3 6 Responses to Queries A query is defined for each setting command unle...

Страница 438: ...s while being executed If overlapping commands do have to be executed in a defined order e g in order to avoid wrong measurement results they must be serviced sequentially This is called synchroni zation between the controller and the instrument Setting commands within one command line even though they may be implemented as sequential commands are not necessarily serviced in the order in which the...

Страница 439: ...on and the signal configuration are independent from each other so none of the following overlapped commands needs to be synchronized SOUR BB 3GPP STAT ON SOUR BB GSM FORM FSK2 6 4 1 Preventing Overlapping Execution To prevent an overlapping execution of commands one of the commands OPC OPC or WAI can be used All three commands cause a certain action only to be carried out after the hardware has b...

Страница 440: ...PC with a service request 1 Set bit no 4 in the SRE SRE 16 to enable MAV service request 2 Send the overlapped command with OPC 3 Wait for a service request The service request indicates that the overlapped command has finished Event Status Register ESE 1 Set the OPC mask bit bit no 0 in the ESE ESE 1 2 Send the overlapped command without OPC OPC or WAI 3 Poll the operation complete state periodic...

Страница 441: ...us will not block the GUI or the communication with other instruments 6 5 Status Reporting System The status reporting system stores all information on the current operating state of the instrument and on errors which have occurred This information is stored in the status registers and in the error queue Both can be queried with the commands STATus 6 5 1 Hierarchy of status registers As shown in t...

Страница 442: ...or the IST flag as the SRE for the service request Output buffer The output buffer contains the messages the instrument returns to the controller It is not part of the status reporting system but determines the value of the MAV bit in the STB and thus is represented in the overview All status registers have the same internal structure SRE ESE The service request enable register SRE can be used as ...

Страница 443: ... 0 to 1 the associated PTR bit decides whether the EVENt bit is set to 1 PTR bit 1 the EVENt bit is set PTR bit 0 the EVENt bit is not set This part can be written into and read as required Its contents are not affected by reading NTRansition The Negative TRansition part also acts as a transition filter When a bit of the CONDition part is changed from 1 to 0 the associated NTR bit decides whether ...

Страница 444: ...ined in IEEE 488 2 It provides a rough overview of the instrument status by collecting the pieces of information of the lower registers A special feature is that bit 6 acts as the sum bit of the remaining bits of the status byte The STB is read using the command STB or a serial poll The STatus Byte STB is linked to the Service Request Enable SRE register Each bit of the STB is assigned a bit in th...

Страница 445: ...E can be set using commands PRE and read using command PRE 6 5 4 Event Status Register ESR and Event Status Enable Register ESE The ESR is defined in IEEE 488 2 The event status register can be read out using com mand ESR on page 434 The ESE is the associated enable part It can be set using the command ESE on page 434 and read using the command ESE Table 6 4 Meaning of the bits used in the event s...

Страница 446: ...sent a SRQ and why Parallel poll of all devices Query of a specific instrument status by means of commands Query of the error queue 6 5 5 1 Service Request Under certain circumstances the instrument can send a service request SRQ to the controller Usually this service request initiates an interrupt at the controller to which the control program can react appropriately An SRQ is always initiated if...

Страница 447: ...well This register is ANDed with the STB bit by bit con sidering bit 6 as well The results are ORed the result is possibly inverted and then sent as a response to the parallel poll of the controller The result can also be queried without parallel poll using the command IST The instrument first has to be set for the parallel poll using the command PPC This com mand allocates a data line to the inst...

Страница 448: ...le contains the different commands and events causing the status reporting system to be reset None of the commands except RST and SYSTem PRESet influence the functional instrument settings In particular DCL does not change the instrument settings Table 6 5 Resetting the status reporting system Event Switching on supply voltage Power On Status Clear DCL SDC Device Clear Selected Device Clear RST or...

Страница 449: ...apping Execution Reacting to malfunctions The service request is the only possibility for the instrument to become active on its own Each controller program should instruct the instrument to initiate a service request in case of malfunction The program should react appropriately to the service request Error queues The error queue should be queried after every service request in the controller prog...

Страница 450: ...8 2 IEC 625 2 standard These com mands have the same effect and are employed in the same way on different devices The headers of these commands consist of followed by three letters Many common commands are related to the Status Reporting System Available common commands CAL 433 CLS 433 ESE 434 ESR 434 IDN 434 IST 434 OPC 435 OPT 435 PCB 435 PRE 435 PSC 435 RCL 436 RST 436 SAV 436 SRE 436 STB 437 T...

Страница 451: ... status enable register in decimal form Parameters Value Range 0 to 255 ESR Event Status Read Returns the contents of the event status register in decimal form and subsequently sets the register to zero Return values Contents Range 0 to 255 Usage Query only IDN IDeNtification returns the instrument identification Return values ID Rohde Schwarz device type serial number firmware ver sion Example Ro...

Страница 452: ... string A zero is returned for options that are not installed Usage Query only PCB Address Pass Control Back Indicates the controller address to which remote control is returned after termination of the triggered action Setting parameters Address Range 0 to 30 Usage Setting only PRE Value Parallel poll Register Enable Sets parallel poll enable register to the indicated value The query returns the ...

Страница 453: ...ment to a defined default status The default settings are indicated in the description of commands The command is equivalent to SYSTem PRESet Usage Setting only SAV Number SAVe stores the current instrument settings under the specified number in an intermedi ate memory The settings can be recalled using the command RCL with the associated number To transfer the stored instrument settings in a file...

Страница 454: ... commands until all preceding commands have been executed and all signals have settled see also command synchronization and OPC Usage Event 7 2 Preset Commands The preset commands are not bundled in one subsystem Therefore they are listed sep arately in this section In addition a specific preset command is provided for each digital standard and for the fader These specific commands are described i...

Страница 455: ...signal path Fading if available and transient recorder are only preset by command RST Example SOUR PRES presets all settings that are related to signal path SYSTem PRESet The command triggers an instrument reset It has the same effect as the PRESET key on the front panel the RST command For an overview of the settings affected by the preset function see chapter 5 2 2 Default Instrument Settings Pr...

Страница 456: ...ternally generated wave forms as well as for data and control lists The data can be transmitted via the GPIB interface from an external computer to the instrument and vice versa For these purposes the file is transmitted as a binary data block using SCPI command SOURce hw BB ARB WAVeform DATA A waveform version number is not necessary due to the flexible tag based form Tags are self contained info...

Страница 457: ...44 TRACE LIST Pos0 Val0 Pos1 Val1 Posx Valx PosN 1 ValN 1 445 WAVEFORM Length I0Q0I1Q1 IxQx IN 1QN 1 445 MWV_SEGMENT_COUNT NumOfSeg 447 MWV_SEGMENT_LENGTH SamplesSeg0 SamplesSeg1 SamplesSegN 1 447 MWV_SEGMENT_START SampleStartOffsetSeg0 SampleStartOffsetSeg1 SampleStartOffsetSegN 1 448 MWV_SEGMENT_CLOCK_MODE Mode 448 MWV_SEGMENT_CLOCK ClockSeg0 ClockSeg1 ClockSegN 1 449 MWV_SEGMENT_LEVEL_OFFS RMSO...

Страница 458: ...racter in the WAVEFORM tag and length is the number of bytes between start and the closing curly bracket excluding the latter length must be divisible by 4 without a remainder UINT32 checksum void start UINT32 length UINT32 i result 0xA50F74FF for i 0 i length 4 i result result UINT32 start i return result Example TYPE SMU WV 106656 BB ARB WAV TAG TYPE queries the content of the TYPE tag Response ...

Страница 459: ...enhanced channels Usage Setting only COPYRIGHT string The tag contains an ASCII string of arbitrary length The string is not analyzed in the R S SMBV It is used to store copyright information about the file content Example COPYRIGHT Rohde Schwarz BB ARB WAV TAG COPYRIGHT queries the content of the COPYRIGHT tag of the selected wave form file Response Rohde Schwarz copyright resides with Rohde Schw...

Страница 460: ...not analyze this tag Example DATE 2009 04 02 14 32 12 BB ARB WAV TAG DATE queries the content of the DATE tag of the selected waveform file Response 2009 04 02 14 32 12 the waveform was created on April 2 2009 at 14 hrs 32 min Usage Setting only CONTROL LENGTH ControlLength optional recommended for marker and control lists The tag contains the length of the control list in ASCII format If this tag...

Страница 461: ... modulated to full scale Full scale 0 dB max amplitude of vector of I Q samples SIQ max sqrt I2 Q2 max 215 1 32767 A positive PeakOffset_dB value indicates that a headroom to full scale is provided when generating the waveform A negative PeakOffset_dB value indicates that overrange is likely for some samples i e clipping might occur The crest factor can be calculated from the two values as follows...

Страница 462: ... from which the binary state of the marker or of the control signal changes from 0 to 1 or from 1 to 0 Val Specifies the binary state of the marker or of the control signal 0 1 from Posx to Posx 1 exclusive in ASCII format Example MARKER LIST 1 0 0 10 1 20 0 30 1 BB DM CLIS TAG MARKER LIST 1 queries the content of the MARKER LIST 1 tag of the selected control list file Response 0 0 10 1 20 0 30 1 ...

Страница 463: ...Vp of 0 5 Volt arises on the I Q output connectors of the R S SMBV The illustration also applies to the Q output Setting parameters Length Specifies the number of bytes in a WAVEFORM tag and is calculated as follow Length Number of I Q pairs 4 i e 2 bytes per I and 2 bytes per Q value 1 byte i e the length of the R S Signal Generator Waveform and List Format ...

Страница 464: ...LENGTH Further MWV_SEGMENT_ tags are also available i e for level and clock information etc Example WAVEFORM 401 I0 Q0 I1 Q1 I2 Q2 I99 Q99 100 I Q pairs with 4 bytes each are transmitted none multi seg ment Example Multi Segment WAVEFORM 1201 I0 Seg0 Q0 Seg0 I1 Seg0 Q1 Seg0 I99 Seg0 Q99 Seg0 I0 Seg1 Q0 Seg1 I1 Seg1 Q1 Seg1 I199 Seg1 Q199 Seg1 2 segments segment 0 with 100 I Q pairs segment 1 with ...

Страница 465: ...ple MWV_SEGMENT_START 0 100 2 segments with 100 samples in segment 0 and 200 samples in segment 1 Sample start offset of first segment 0 is 0 samples start offset of next segment 1 is the sample length of segment 0 100 samples Usage Setting only MWV_SEGMENT_CLOCK_MODE Mode mandatory for multi segment waveforms The tag contains a string in ASCII format which supplies the clock rate mode that was us...

Страница 466: ...tput waveform USER All segments have an indentical clock rate which is given by the user Note Only upsampling is allowed no downsampling If an individual original waveform has a lower clock rate an upsampling to the user clock rate will performed on calculation of the multi segment output waveform Example MWV_SEGMENT_CLOCK_MODE UNCHANGED MWV_SEGMENT_CLOCK_MODE HIGHEST MWV_SEGMENT_CLOCK_MODE USER U...

Страница 467: ...r multi segment waveforms The tag contains a list of file names for every segment in the multi segment waveform in ASCII format Example MWV_SEGMENT_FILES d waveforms sine wv d waveforms rect wv Usage Setting only MWV_SEGMENTx_COMMENT text optional for multi segment waveforms The tag contains a user comment for a specific segment x 0 NumOfSeg 1 in the multi segment waveform in ASCII format Example ...

Страница 468: ...Number of marker elements mx 4 bit 8 bits byte The value is rounded up for byte alignment mx Marker element in 4 bit binary format Example CONTROL LIST WIDTH4 51 m0m1 mx m99 100 marker elements each marker element with 4 bits Usage Setting only 7 3 2 Creating a Waveform Manually We will use the example of a sine function in the I channel and a cosine function in the Q channel each with 20 points t...

Страница 469: ... sign and with 16 bit width The numeric range between 1 0 and 1 0 corresponds to the modulation range of the waveform D A converter of 65535 216 1 1 0 32767 0x7FFF 0 0 0 0x0000 1 0 32767 0x8001 A further C program is suitable for creating the binary data set from the ASCII values stored in SICO TXT file see following example for creating a C program This pro gram stores the binary data set to a fi...

Страница 470: ...r binary values in this document This is why we use the sequence IQIQIQ to characterize the binary code in the present example The contents of the waveform file SICO WV for 20 I Q pairs is now ready for operation and reads TYPE SMU WV 0 CLOCK 10e6 WAVEFORM 81 IQIQIQIQIQIQ IQ The tags TYPE CLOCK and WAVEFORM are mandatory for each waveform All other tags are optional and can be inserted after the T...

Страница 471: ...pen SICO TXT rt if fp_sour 0 return fp_dest fopen SICO WV wb if fp_dest 0 fclose fp_sour return Write required tags to waveform file fprintf fp_dest TYPE SMU WV 0 fprintf fp_dest CLOCK 10e6 fprintf fp_dest SAMPLES d samples fprintf fp_dest WAVEFORM d samples 4 1 for i 0 i samples i Read I Q pair from ASCII file if fscanf fp_sour f f i_float q_float EOF break Convert I Q pair to unsigned short i_us...

Страница 472: ...4 58 44 HOP LIST 0 0 498 1 506 0 CW MODE LIST 0 0 380 1 LEVATT LIST 1 0 0 464 1 BURST LIST 0 0 122 1 270 0 582 1 924 0 MARKER LIST 4 0 0 706 1 764 0 MARKER LIST 3 0 0 530 1 633 0 MARKER LIST 2 0 0 350 1 457 0 MARKER LIST 1 0 0 108 1 160 0 CONTROL LENGTH 1000 The tags to the traces in the C List editor are HOP LIST CW MODE LIST LEVATT LIST 1 BURST LIST MARKER LIST 4 MARKER LIST 3 MARKER LIST 2 MARK...

Страница 473: ...ion Subsystem The CALibration system contains the commands for adjustment Adjustment is triggered by the query commands The response 0 indicates error free adjustment and the response 1 means that an error occurred during adjustment CALibration ALL MEASure 456 CALibration hw FMOFfset MEASure 457 CALibration hw FREQuency MEASure 457 CALibration hw IQModulator FULL 457 CALibration hw IQModulator LOC...

Страница 474: ...0 the adjustments have been performed successfully Usage Query only CALibration hw IQModulator FULL The command starts adjustment of the I Q modulator for the entire frequency range The I Q modulator is adjusted with respect to carrier leakage I Q imbalance and quadrature Return values Full 0 1 Example CAL IQM FULL starts adjustments for the I Q modulator across the entire fre quency range Respons...

Страница 475: ...l adjustments which affect the level Return values Measure 0 1 Example CAL LEV MEAS starts adjustments for maximum level accuracy Response 0 adjustment has been performed successfully Usage Query only CALibration hw LEVel EXTern DATA Data Selects the data used for of external level correction By default the instrument uses correction data obtained in the factory before delivery In addition custome...

Страница 476: ...ternal clock signal An external clock reference must be supplied at the CLOCK input Return values Frequency float Example CLOC INP FREQ queries the measured frequency of the external clock reference Usage Query only CLOCk INPut SLOPe Slope The command sets the active slope of an externally applied clock signal at the CLOCK connector Parameters Slope NEGative POSitive RST POSitive Example CLOC INP ...

Страница 477: ... command DIAGnostic hw BGINfo CATalog on page 460 Return values Bginfo Module name Module stock number incl variant Module revision Module serial number Each entry for one module consists of four parts which are sepa rated by space characters Example DIAG BGIN Queries the instrument configuration Response MBRD SSYN IQOP3 IQOP3_LCM returns the data of all available modules DIAG BGIN MBRD Queries th...

Страница 478: ...e DIAG INFO POC queries the number of power on events Response 123 The instrument was switched on for 123 times up to now Usage Query only 7 7 DISPlay Subsystem The DISPlay subsystem contains the commands to set the power save mode of the instrument DISPlay ANNotation AMPLitude 461 DISPlay ANNotation FREQuency 462 DISPlay ANNotation ALL 462 DISPlay DIALog CLOSe 462 DISPlay DIALog ID 462 DISPlay DI...

Страница 479: ...e settings are particularly useful when you remotely control the instru ment Parameters State 0 1 OFF ON RST 1 Example DISP ANN AMPL ON shows asterisks instead of frequency and level values DISPlay DIALog CLOSe DialogId Closes the specified dialog To determine the dialog identifier use command DISPlay DIALog ID Setting parameters DialogId string Example DISP DIAL CLOS dialog ID closes the dialog d...

Страница 480: ...Activates the screen save mode of the display If activated the display including backlight is completely switched off after the elapse of the wait time provided no entries via front panel external mouse or external keyboard are made To determine the wait time use command DISPlay PSAVe HOLDoff This mode is recommended for protecting the display especially if the instrument is operated via remote co...

Страница 481: ...l Example FORM BORD SWAP the data is transferred with the most significant bit first FORMat DATA Data The command determines the data format which the R S Signal Generator uses to return data When data is transferred from the control computer to the instrument the instrument detects the data format automatically In this case the value set here is irrelevant Parameters Data ASCii PACKed ASCii Numer...

Страница 482: ... the commands to generate a hardcopy of the display HCOPy DATA 465 HCOPy DEVice 466 HCOPy DEVice LANGuage 466 HCOPy EXECute 466 HCOPy FILE NAME 467 HCOPy FILE NAME AUTO 467 HCOPy FILE NAME AUTO DIRectory 467 HCOPy FILE NAME AUTO DIRectory CLEar 468 HCOPy FILE NAME AUTO FILE 468 HCOPy FILE NAME AUTO FILE DAY 468 HCOPy FILE NAME AUTO FILE DAY STATe 469 HCOPy FILE NAME AUTO FILE MONTh 469 HCOPy FILE ...

Страница 483: ...DEV FILE the hardcopy will be stored in a file HCOPy DEVice LANGuage Language The command selects the bitmap graphic format for the screenshot It is also possible to directly retrieve the data using command HCOP DATA This command is an alias to command HCOPy IMAGe FORMat Parameters Language BMP JPG XPM PNG RST BMP Example HCOP DEV LANG BMP selects bitmap as image format HCOP FILE usb HCopy defines...

Страница 484: ...FILE NAME AUTO This command queries the path including the file name of the file with automatically gen erated name Return values Auto string Example HCOP DEV LANG BMP selects output format bmp HCOP FILE AUTO DIR usb HCopy defines the destination directory usb HCopy HCOP FILE AUTO PREF gen the file name starts with the prefix gen The usage of automatic naming with prefix and date in the file name ...

Страница 485: ... component can be deactivated activated separately to individually design the file name Return values File string Example HCOP DEV LANG BMP selects output format bmp HCOP FILE AUTO DIR usb HCopy defines the destination directory usb HCopy HCOP FILE AUTO PREF gen the file name starts with the prefix gen The usage of automatic naming with prefix and date in the file name is preset STAT ON HCOP trigg...

Страница 486: ...ers State 0 1 OFF ON RST ON Example HCOP FILE AUTO MONT STAT OFF deactivates the usage of the month in the automatic file name HCOPy FILE NAME AUTO FILE NUMBer This command queries the number in the automatic file name The number is assigned in such a way that always the lowest possible value for an unique file name within the selected path is used On initially switching on the device the number w...

Страница 487: ... FILE NAME AUTO FILE PREFix STATe State This command activates the usage of the prefix in the automatic file name The prefix is entered with command HCOP FILE AUTO PREF Parameters State 0 1 OFF ON RST ON Example HCOP FILE AUTO PREF STAT OFF deactivates the usage of the prefix in the automatic file name HCOPy FILE NAME AUTO FILE YEAR This command queries the year in the date part in the automatic f...

Страница 488: ...also possible to directly retrieve the data using command HCOP DATA This command is an alias to command HCOPy DEVice LANGuage Parameters Format BMP JPG XPM PNG RST BMP Example HCOP IMAG FORM XPM selects the image format XPM HCOPy IMAGe SIZE Size The command selects the image size of the hardcopy The first value of the size setting defines the width the second value the height of the image Paramete...

Страница 489: ...American keyboard layout Usage Query only SCPI confirmed 7 11 MMEMory Subsystem The MMEMory subsystem Mass Memory contains the commands for managing files and directories as well as for loading and storing complete instrument settings in files The files are stored on the internal flash card of the instrument The var directory can be used to save user defined data any subdirectory structure can be ...

Страница 490: ... When used in conjunction with the commands the parameter file_name is specified as a string parameter with quotation marks It can contain either the complete path including the drive only the path and file name or only the file name The file name must include the file extension The same applies for the parameters directory_name and path Depending on how much information is provided either the val...

Страница 491: ...user mapping vam User Filter Digital modulation user filter vaf NRP Settings Settings NRP Settings nrp EX IQ Box User Settings EX IQ Box User Defined Settings iqbox Fading Fading Fading data fad GSM EDGE Settings GSM EDGE settings gsm Slot User defined slot data gsm_slu Frame User defined frame data gsm_fu Slot Higher symbol rate slot gsm_hslu Frame Higher symbol rate frame gsm_hfu Bluetooth Bluet...

Страница 492: ...efined IQ File iqw GPS Settings Complete setting of the GPS A GPS menu gps Settings GPS Almanac Settings txt alm al3 Settings GPS Waypoints File txt Settings GPS Generated Almanac File rs_al rs_yuma Settings GPS Ionospheric File rs_ion Settings GPS Navigation Data rs_nav Settings GPS UTC File rs_utc rs_acq FM Stereo Settings Complete setting of the FM Stereo menu fmstereo Settings FM Stereo Group ...

Страница 493: ... file in the default drive set the default drive and specify only the file name MMEM CDIR var user SAV 4 MMEM STOR STAT 4 test savrcltxt 4 Load the file test savrcltxt in the user directory MMEM LOAD STAT 4 var smbv user test savrcltxt 5 Activate the instrument setting of the file test savrcltxt RCL 4 Working with Files and Directories 1 Read out all files in the specified directory MMEM CAT usb u...

Страница 494: ...vrcltxt 6 Remove the test directory MMEM RDIR usb user test 7 11 4 Remote Control Commands MMEMory CATalog 477 MMEMory CATalog LENGth 478 MMEMory CDIRectory 478 MMEMory COPY 478 MMEMory DATA 479 MMEMory DCATalog 480 MMEMory DCATalog LENGth 480 MMEMory DELete 480 MMEMory LOAD STATe 481 MMEMory MDIRectory 481 MMEMory MOVE 481 MMEMory MSIS 482 MMEMory RDIRectory 482 MMEMory STORe STATe 482 MMEMory CA...

Страница 495: ... the directory If the direcory is omitted the command queries the content of the current directory queried with MMEM CDIR command count Number of files Example See Working with Files and Directories on page 476 Usage Query only MMEMory CDIRectory Cdirectory Changes the default directory for mass memory storage The directory is used for all subsequent MMEM commands if no path is specified with them...

Страница 496: ...thout an error message Example See Working with Files and Directories on page 476 Usage Event SCPI confirmed MMEMory DATA file_name binary block data MMEMory DATA file_name Writes the block data binary block data to the file identified by file_name The IEC IEEE bus terminator should be set to EOI in order to ensure correct data transfer The associated query command transfers the specified file fro...

Страница 497: ...ry Names of the subdirectories separated by colons The first two strings are related to the parent directory Example See Working with Files and Directories on page 476 Usage Query only MMEMory DCATalog LENGth path_name Returns the number of subdirectories in the current or specified directory Query parameters path_name String parameter to specify the directory If the directory is omitted the comma...

Страница 498: ...ecified directory If no directory is specified a subdirectory is created in the default directory This command can also be used to create a directory tree Setting parameters directory_name string String parameter to specify the new directory Example See Working with Files and Directories on page 476 Usage Setting only MMEMory MOVE file_source file_destination Moves an existing file to a new locati...

Страница 499: ...ed file The instrument setting must first be stored in an internal memory with the same number using the common command SAV Setting parameters sav_rcl_state_number Corresponds to the specific number defined with the SAV command e g SAV 4 file_name String parameter to specify the file name with extension savrcltxt Example See Storing and Loading Current Settings on page 476 Usage Event 7 12 OUTPut ...

Страница 500: ...which can be set without the attenuator being adjusted Attenuator FIXed Return values Upper float Default unit dBm Example OUTP AFIX RANG UPP queries the maximum level for the FIXed setting for the RF output Example Response 27 The maximum level is 27 dBm Usage Query only OUTPut hw AMODe Amode The command switches the mode of the attenuator at the RF output Attenuator MODe Parameters Amode AUTO FI...

Страница 501: ...impedance is 50 ohms Usage Query only SCPI confirmed OUTPut hw PROTection CLEar The command resets the protective circuit after it has been tripped The state of the output is again determined by OUTPut STATe Example OUTP PROT CLE resets the protective circuit for RF output Usage Event SCPI confirmed OUTPut hw PROTection TRIPped The command queries the state of the protective circuit Return values ...

Страница 502: ...wer sensor s connected to the generator The measurement is started and the measurement result retrieved with the READ command The description of this commands is included in the following Up to four sensors can be connected to the signal generator They are distinguished by means of the suffix under SENSe Power sensor connected to the SENSOR port SENSe 1 power sensor connected first to one of the U...

Страница 503: ... the measurement results The local state is not influenced by this command measurements results can be retrieved with local state on or off Parameters Continuous 0 1 OFF ON RST OFF Example INIT CONT ON switches local state of continuous power measurement on READ ch POWer The command triggers the measurement with power sensors and provides the power measurement result of the selected power sensor T...

Страница 504: ...r sensor with attenuator this command is automatically set to ON Parameters State 0 1 OFF ON RST OFF Example SENS POW CORR SPD STAT ON activates the use of the s parameters correction data of power sensor 1 SENSe ch POWer DISPlay PERManent STATe State The command switches on and off the permanent indication of the power measurement result in the upper right corner of the block diagram For each sen...

Страница 505: ...ly SENSe ch POWer FILTer LENGth USER User The command selects the filter length for user filter mode SENSe POWer FILTer TYPE USER As the filter length works as a multiplier for the time window a constant filter length results in a constant measurement time Values 1 and 2 n are settable The time window is fixed to 20 ms Parameters User float Range 1 to 65536 RST 1 Example SENS FILT TYPE USER select...

Страница 506: ...SENS1 FILT TYPE NSR selects fixed noise filter mode for the power sensor connected to the SENSOR connector SENS1 FILT NSR 2 sets a noise content of 0 2 SENS1 FILT NSR MTIM 5 limits the settling time to 5 seconds SENSe ch POWer FILTer SONCe The command activates the search for the optimum filter length for the current measure ment conditions The found filter length can be retrieved with com mand SE...

Страница 507: ...iations does not exceed the speci fied noise content The desired noise content is entered with com mand SENSe FILTer NSRatio To avoid very long settling times when the power is low the aver aging factor can be limited with the Timeout parameter command SENSe FILTer NSRatio MTIMe RST AUTO Example SENS FILT TYPE AUTO selects automatic filter selection SENSe ch POWer FREQuency Frequency The command s...

Страница 508: ...dB SENS1 POW OFFS STAT ON a level offset of 0 4 dB is added to the measured value SENSe ch POWer SNUMber The command queries the serial number of the sensor Return values Snumber string Example SENS SNUM queries the serial number Usage Query only SENSe ch POWer SOURce Source The command selects the signal source for the measurement Parameters Source A B USER RST A Example SENS SOUR A selects the R...

Страница 509: ...he software version of the connected R S NRP power sensor Return values Sversion string Example SENS POW SVER queries the software version of the R S NRP power sensor Usage Query only SENSe ch POWer TYPE The command queries the type of sensor The type is automatically detected Return values Type string Example SENS TYPE queries the type of sensor connected to the POWER SENSOR connector Response NR...

Страница 510: ...onse 7 34 7 34 dBm are measured by sensor 2 7 14 SOURce Subsystem The SOURce subsystem contains the commands for configuring the digital and analog signals SOURce hw For one path instruments the keyword SOURce is optional and can be omitted SOURce AM Subsystem 494 SOURce AWGN Subsystem 496 SOURce BB Subsystem 503 SOURce BBIN Subsystem 610 SOURce CORRection Subsystem 615 SOURce FM Subsystem 623 SOU...

Страница 511: ...Th Depth The command sets the modulation depth of the amplitude modulation in percent The modulation depth is limited by the maximum peak envelope power PEP Parameters Depth float Range 0 to 100 Increment See data sheet RST 30 Default unit PCT Example AM 15PCT sets the AM modulation depth to 15 percent SOURce hw AM EXTernal COUPling Coupling The command selects the coupling mode for the external m...

Страница 512: ... 1V the resulting sen sitivity is precisely 50 V Usage Query only SCPI confirmed SOURce hw AM SOURce Source The command selects the modulation source for amplitude modulation Internal and external modulation source can be selected at the same time Parameters Source INTernal EXTernal INT INT is the LF generator The frequency of the internal modulation signal can be set in the SOURce LFOutput subsys...

Страница 513: ...N POWer SUM PEP 503 SOURce hw AWGN STATe 503 SOURce hw AWGN BRATe BRate This command sets the bit rate which is used for calculation of bit energy to noise power ratio from carrier noise ratio for Digital Standard signals For Custom Digital Mod signals the bit rate which is used for calculation can be queried with this command Valid units are bps kbps and mabps as well as b s kb s and mab s Parame...

Страница 514: ...00 RST 0 Example AWGN BWID NOIS queries the noise bandwidth Usage Query only SOURce hw AWGN BWIDth RATio Ratio This command is available for modes Additive Noise and Noise Only SOUR AWGN MODE ADD ONLY This command sets the ratio of minimum real noise bandwidth to system bandwidth The overall bandwidth is calculated as follow and may not exceed 120 MHz Overall Bandwidth System BW x Minimum Noise Sy...

Страница 515: ... a carrier noise ratio of 10 dB SOURce hw AWGN DISP MODE Mode Selects the display mode to Bseband or RF Parameters Mode RF BB RST RF Example AWGN DISP MODE RF sets the display mode to RF SOURce hw AWGN ENRatio EnRatio This command sets the ratio of bit energy to noise power density in Additive Noise mode Depending on the selected reference mode either the noise level AWGN POW RMOD NOISe or the car...

Страница 516: ...uency may differ from the desired frequency since the resolution is limited to 0 7 Hz Return values Result float Range 40E6 to 40E6 Increment 0 01 RST 0 Example AWGN FREQ RES queries the actual frequency of the interfering sine Usage Query only SOURce hw AWGN FREQuency TARGet Target This command sets the desired frequency of the sine in CW Interferer mode AWGN MODE CW The resulting frequency may d...

Страница 517: ...D CW This command either sets or queries the carrier or signal level depending on the selected reference mode Reference Mode Carrier SOUR AWGN POW RMOD CARR Sets the carrier level The level of the noise signal is derived from the entered C N value Reference Mode Noise SOUR AWGN POW RMOD NOIS queries the carrier level which is derived from the entered C N value The noise level is set with command S...

Страница 518: ...tive Noise Noise Only and CW Interferer SOUR AWGN MODE ADD ONLY CW This command sets or queries the noise level in the system bandwidth depending on the selected modes Additive Noise and CW Interferer mode SOUR AWGN MODE ADD CW Reference Mode Carrier SOUR AWGN POW RMOD CARR The command queries the noise interferer level which is derived from the entered C N value The carrier level is set with comm...

Страница 519: ...E RF Parameters RMode CARRier NOISe CARRier The carrier level is kept constant when the C N value or Eb N0 value is changed The noise level is adjusted NOISe The noise level is kept constant when the C N value or Eb N0 value is changed The carrier level is adjusted RST CARRier Example AWGN MODE ADD selects Additive Noise mode AWGN DISP MODE RF sets the display mode to RF AWGN POW RMOD NOIS selects...

Страница 520: ...es the white noise AWGN Averaged White Gaus sian Noise The noise signal is either superimposed on the baseband signal Additive Noise mode SOUR AWGN MODE ADD or is output as a pure noise signal Noise Only mode SOUR AWGN MODE ONLY In addition a sine with adjustable frequency offset to the baseband signal can be generated as an RFI signal CW Interferer mode SOUR AWGN MODE CW Parameters State 0 1 OFF ...

Страница 521: ...e baseband signal The offset affects the signal on the baseband block output It shifts the useful baseband signal in the center frequency Note It is not possible to enter a frequency offset if a waveform with a sample rate of exactly 150 or 90 MHz depending on the installed option is introduced A signal of this nature is not routed via the resampler in which the frequency shift takes place This ty...

Страница 522: ... OUTput subsystems Section chapter 7 3 R S Signal Generator Waveform and List Format on page 439 describes the ARB waveform format and how it is used to transmit waveforms via the IEC bus Common Settings 505 Clock Settings 506 Trigger Settings 508 Marker Settings 515 Test Signals Settings 518 SOURce BB ARB MCAR Subsystem 521 SOURce BB ARB WAV Subsystem 535 SOURce BB ARB WSEG Subsystem 538 Common S...

Страница 523: ... BB ARB CLOCk SYNChronization EXECute 508 SOURce hw BB ARB CLOCk Clock The command sets the clock rate in samples Loading a waveform waveform ARB WAV SEL name sets the clock rate that is defined in the waveform tag clock The command subsequently changes the clock rate see data sheet for value range In the case of an external clock source selection ARB CLOCk SOURce EXTernal the clock for the extern...

Страница 524: ...nnector BB ARB CLOC MODE MSAM selects clock type Multiple Samples i e the supplied clock has a rate which is a multiple of the sample rate BB ARB CLOC MULT 12 The multiplier for the external clock rate is 12 SOURce hw BB ARB CLOCk SOURce Source The command selects the source for the digital modulation clock Parameters Source INTernal EXTernal AINTernal INTernal The internal clock reference is used...

Страница 525: ...trument is configured to work as a master one SOURce hw BB ARB CLOCk SYNChronization EXECute Performs automatically adjustment of the instrument s settings required for the synchro nization mode set with the command SOURce hw BB ARB CLOCk SYNChronization MODE Example BB ARB CLOC SYNC MODE MAST the instrument is configured to work as a master one BB ARB CLOC SYNC EXEC all synchronization s settings...

Страница 526: ...ommand executes a trigger The internal trigger source must be selected using the command ARB TRIGger SOURce INTernal and a trigger mode other than AUTO must be selected using the command ARB SEQuence Example BB ARB TRIG SOUR INT sets internal triggering BB ARB SEQ RETR sets Retrigger mode i e every trigger event causes signal output to restart BB ARB TRIG EXEC executes a trigger Usage Event SOURce...

Страница 527: ...s synchronous output to external trigger SOURce hw BB ARB TRIGger OUTPut DELay FIXed Fixed The command restricts the marker delay setting range to the dynamic range In this range the delay can be set without restarting the marker and signal If a delay is entered in setting ON but is outside this range the maximum possible delay is set and an error message is output The setting always affects every...

Страница 528: ...5 Increment 1E 3 RST 0 Example BB ARB TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range BB ARB TRIG OUTP DEL MIN queries the minimum of the dynamic range Response 0 the minimum for the marker delay setting is 0 samples Usage Query only SOURce hw BB ARB TRIGger RMODe The command queries the status of waveform output or all trigger modes with ARB on Return val...

Страница 529: ...he waveform Parameters SLength float Range 1 to 2 32 1 RST 1 Waveform length Default unit sample Example BB ARB SEQ SING sets trigger mode Single BB ARB TRIG SLUN SAMP sets unit Samples for the entry of sequence length BB ARB TRIG SLEN 200 sets a sequence length of 200 samples The first 200 samples of the current waveform will be output after the next trigger event SOURce hw BB ARB TRIGger SLUNit ...

Страница 530: ...n is seamless SEQuencer The waveform files are processed according to the order and rep etition cycles defined in the special sequencing list file wvs assigned to the multi segment waveform file This play list is selected with the command BB ARB WSEG SEQ SEL RST NEXT Example SOUR2 BB ARB SEQ AUTO selects trigger mode AUTO SOUR2 BB ARB TRIG SMOD SAME the same segment of the waveform is output repea...

Страница 531: ... sets a delay of 200 samples for the trigger SOURce hw BB ARB TRIGger EXTernal 1 2 INHibit Inhibit The command specifies the number of samples by which a restart is to be inhibited fol lowing a trigger event This command applies only in the case of external triggering The numeric suffix to EXTernal distinguishes between the external trigger via the TRIG GER 1 suffix 1 and TRIGGER 2 suffix 2 connec...

Страница 532: ...ed with command SOUR BB ARB TRIG ARM EXEC and started again when a trigger event occurs SINGle The waveform is output only when a trigger event occurs After the trigger event the waveform is output once to the set sequence length SOUR BB ARB TRIG SLEN Every subsequent trigger event causes a restart RST RETRigger Example BB ARB SEQ AAUT sets the Armed_auto trigger mode the device waits for the firs...

Страница 533: ...TRIGger OUTPut PATTern The bit pattern is a maximum of 32 bits long RATio A regular marker signal corresponding to the Time Off Time On specifications in the com mands ARB TRIGger OUTPut OFFTime and ARB TRIGger OUTPut ONTime is generated RST UNCHanged Example BB ARB TRIG OUTP2 MODE PULS selects the pulsed marker signal on output MARKER 2 BB ARB TRIG OUTP2 STAT ON activates the pulsed marker signal...

Страница 534: ...ignal in the setting SOURce BB ARB TRIGger OUTPut MODE PULSe The pulse frequency is derived by dividing the symbol rate by the divider Parameters Divider integer Range 2 to 1024 Increment 1 RST 2 Example BB ARB TRIG OUTP2 PULS DIV 2 sets the divider for the marker signal on output MARKER 2 to the value 2 BB ARB TRIG OUTP2 FREQ queries the resulting pulse frequency of the marker signal Response 66 ...

Страница 535: ...TSIGnal CIQ I 519 SOURce hw BB ARB TSIGnal CIQ Q 519 SOURce hw BB ARB TSIGnal RECTangle AMPLitude 519 SOURce hw BB ARB TSIGnal RECTangle FREQuency 519 SOURce hw BB ARB TSIGnal RECTangle OFFSet 519 SOURce hw BB ARB TSIGnal RECTangle SAMPles 520 SOURce hw BB ARB TSIGnal SINE FREQuency 520 SOURce hw BB ARB TSIGnal SINE PHASe 520 SOURce hw BB ARB TSIGnal SINE SAMPles 521 SOURce hw BB ARB TSIGnal CIQ C...

Страница 536: ...r the Q component of the test signal SOURce hw BB ARB TSIGnal RECTangle AMPLitude Amplitude Sets the digital amplitude of the rectangular wave Parameters Amplitude float Range 0 to 1 Increment 0 001 RST 0 800 Default unit FS Example BB ARB TSIG RECT AMPL 0 5 sets the amplitude of the test signal SOURce hw BB ARB TSIGnal RECTangle FREQuency Frequency The command sets the frequency of the test signa...

Страница 537: ... BB ARB TSIGnal SINE FREQuency Frequency The command sets the frequency of the simple sinusoidal test signal This signal is used as output via the I channel A sine wave of the same frequency but optionally phase shifted is generated on the Q path ARB TSIGnal SINE POFFset Parameters Frequency float Range 100 to Max Increment 0 01 RST 1000 Default unit Hz Example BB ARB TSIG SINE FREQ 100 kHz sets a...

Страница 538: ...arrier Wave form Generator Section chapter 7 3 R S Signal Generator Waveform and List Format on page 439 describes the ARB waveform format and how it is used to transmit waveforms via the IEC bus CARRier ch The numerical suffix under CARRier distinguish between the carriers The value range is 0 31 SOURce hw BB ARB MCARrier CARRier COUNt 522 SOURce hw BB ARB MCARrier CARRier MODE 522 SOURce hw BB A...

Страница 539: ...32 SOURce hw BB ARB MCARrier SAMPles 532 SOURce hw BB ARB MCARrier SETTing CATalog 533 SOURce hw BB ARB MCARrier SETTing LOAD 533 SOURce hw BB ARB MCARrier SETTing STORe 533 SOURce hw BB ARB MCARrier SETTing STORe FAST 534 SOURce hw BB ARB MCARrier TIME 534 SOURce hw BB ARB MCARrier TIME MODE 534 SOURce hw BB ARB MCARrier CARRier COUNt Count The command sets the number of carriers in the ARB multi...

Страница 540: ...and bandwidth Num ber of carriers 1 The total baseband bandwidth is 120 or 60 MHz depending on the installed options Note In order to avoid wrap around problems the effective Carrier Spacing might be slightly modified The Carrier Spacing is rounded in that way that the carrier closest to the center RF frequency shows no phase jump assuming that the carrier is unmodulated For odd number of carriers...

Страница 541: ...s the file with I Q data to be modulated onto the selected carrier Parameters File file name Example BB ARB MCAR CARR15 FILE var smbv IQ_wcdma selects file IQ_wcdma The data of the file is modulated onto car rier 15 SOURce hw BB ARB MCARrier CARRier ch FREQuency Frequency Sets or indicates the carrier frequency depending on the selected carrier frequency mode The carrier frequnecy can be set in Ar...

Страница 542: ... start phase of 90 for carrier 15 SOURce hw BB ARB MCARrier CARRier ch POWer Power The command sets the gain of the selected carrier Parameters Power float Range 80 to 0 Increment 0 01 RST 0 Default unit dB Example BB ARB MCAR CARR15 POW 50 dB sets the power of carrier 15 to 50 dB SOURce hw BB ARB MCARrier CARRier ch STATe State The command switches the selected carrier on or off Parameters State ...

Страница 543: ...ARB MCAR CARR PHAS has an effect SOURce hw BB ARB MCARrier CLIPping CFACtor CFactor Sets the value of the desired crest factor if baseband clipping is enabled BB ARB MCAR CLIP STAT ON A Target Crest Factor above the crest factor of the unclipped multicarrier signal has no effect Parameters CFactor float Range 50 to 50 Increment 0 01 RST 50 Default unit dB Example BB ARB MCAR CLIP STAT ON enables c...

Страница 544: ...Hence the resulting crest factor of the clipped signal is slightly above the Target Crest Factor In order to get the unclipped parts of the clipped multi carrier signal matched with the unclipped multicarrier signal the RF output power should be reduced by the difference between resulting crest factor and Target Crest Factor Parameters State 0 1 OFF ON RST 0 Example BB ARB MCAR CLIP STAT ON enable...

Страница 545: ...ost or rightmost carriers Return values Clock float Range 400 to Max Increment 1E 3 Example BB ARB MCAR CLOC queries the ARB multi carrier output clock rate Usage Query only SOURce hw BB ARB MCARrier CREate This command creates a multi carrier waveform using the current settings of the carrier table The multi carrier waveform is saved into the file defined with command SOUR BB ARB MCAR OFIL The fi...

Страница 546: ...applies only to the starting carrier The delays of the remaining carriers are stepped up or down by the delay value specified in the BB ARB MCAR EDIT CARR DEL STEP command Parameters Start float Range 0 to 1 Increment 1E 9 RST 0 Default unit s Example BB ARB MCAR EDIT CARR DEL 5us sets a start delay of 5 us for the carriers in the carrier range SOURce hw BB ARB MCARrier EDIT CARRier EXECute The co...

Страница 547: ... 90 for the carriers in the carrier range BB ARB MCAR EDIT CARR PHAS STEP 1 DEG the start phase is incremented by 1 for each carrier i e the first carrier has a start phase of 90 the second a start phase of 91 etc SOURce hw BB ARB MCARrier EDIT CARRier PHASe STARt Start The command sets the start phase for the individual carriers in the defined carrier range If the command BB ARB MCAR EDIT CARR PH...

Страница 548: ...idual carriers in the defined carrier range If the command BB ARB MCAR EDIT CARR POW STEP is used to define a step width the power entered here applies only to the starting carrier The power of the remaining car riers is stepped up or down by the power specified in the BB ARB MCAR EDIT CARR POW STEP command Parameters Start float Range 80 to 0 Increment 0 01 RST 0 Default unit dB Example BB ARB MC...

Страница 549: ... file extension is wv Parameters OFile string Example MMEM CDIR var smbv user waveform sets the default directory to var smbv user waveform BB ARB MCAR OFIL mcar1_2 defines the file name mcar1_2 wv for the multi carrier waveform file SOURce hw BB ARB MCARrier PRESet The command sets all ARB multi carrier parameters to their default values Example BB ARB MCAR PRES resets the ARB multi carrier param...

Страница 550: ... SOURce hw BB ARB MCARrier SETTing LOAD Filename The command loads the settings file If a settings file with the specified name does not yet exist it is created The file extension may be omitted Only files with the file extension arb_multcarr will be loaded or created Setting parameters Filename string Example BB ARB MCAR SETT LOAD var smbv user waveform new creates settings file new arb_multcarr ...

Страница 551: ...Example BB ARB MCAR TIME MODE USER selects Signal Period Mode User BB ARB MCAR TIME 10 s sets a signal period of 10 seconds SOURce hw BB ARB MCARrier TIME MODE Mode The command selects the mode for calculating the resulting signal period of the multi carrier waveform The resulting period is always calculated for all carriers in the carrier table irrespective of their state ON OFF Parameters Mode U...

Страница 552: ...ory is set using command MMEM CDIRectory When the names of the waveform files are returned they are separated by commas Only files with the file extension wv will be listed Return values Catalog string Example MMEM CDIR var smbv user waveform sets the default directory to var smbv user waveform BB ARB WAV CAT reads out all the files in the default directory Response sin1 wave the directory contain...

Страница 553: ...ries the content of the specified tag of the selected waveform file see chapter 7 3 R S Signal Generator Waveform and List Format on page 439 By default the waveform files are saved in the default directory of the instrument var instrument Lists To access the waveform files in this default directory only the file name is required with out the path and the file extension However to access waveform ...

Страница 554: ... DEL var smbv user wave1 wv deletes waveform file wave1 wv Usage Setting only SOURce hw BB ARB WAVeform FREE The command queries the free disk space on the default path of the instrument s harddisk Return values Free integer Range 0 to INT_MAX Increment 1 RST 1 Example MMEM CDIR var smbv user waveform sets the default directory to var smbv user waveform BB ARB WAV FREE queries the free disk space ...

Страница 555: ...nd loads it BB ARB TRIG SEQ AAUT sets trigger mode Armed_Auto BB ARB TRIG SOUR INT selects internal triggering BB ARB STAT ON switches on the ARB generator BB ARB TRIG EXEC starts generating the selected waveform SOURce hw BB ARB WAVeform TAG The commandqueries the content of the specified tag of the selected Waveform file file see chapter 7 3 R S Signal Generator Waveform and List Format on page ...

Страница 556: ...e hw BB ARB WSEGment CREate 546 SOURce hw BB ARB WSEGment NAME 546 SOURce hw BB ARB WSEGment NEXT 546 SOURce hw BB ARB WSEGment NEXT EXECute 547 SOURce hw BB ARB WSEGment NEXT SOURce 547 SOURce hw BB ARB WSEGment SEQuence APPend 548 SOURce hw BB ARB WSEGment SEQuence SELect 548 SOURce hw BB ARB WSEGment This command queries the currently output segment of the multi segment waveform Return values W...

Страница 557: ...v for the multi segment wave form BB ARB WSEG CLO multi_sin creates multi segment waveform mseg1_2 wv using the settings of the configuration file multi_sin inf_mswv The new multi segment waveform is loaded and digital standard ARB is activated Usage Setting only SOURce hw BB ARB WSEGment CONFigure BLANk APPend SampCount Frequency Adds a blank segment to the multi segment file Setting parameters S...

Страница 558: ...files in the default directory Response mulit1 multi2 the directory contains the configuration files multi1 inf_mswv and multi2 inf_mswv Usage Query only SOURce hw BB ARB WSEGment CONFigure CLOCk Clock This command defines the clock rate used for multi segment waveform output in case of Clock Mode User BB ARB WSEG CONF CLOCk MODE USER Parameters Clock float Increment 1E 3 RST max SampleRate Exampl...

Страница 559: ...clock mode unchanged The segments are output with the clock rate defined in the waveform file SOURce hw BB ARB WSEGment CONFigure COMMent Comment This command enters a comment for the configuration file The configuration file must be specified with command BB ARB WSEG CONF SEL Parameters Comment string Example BB ARB WSEG CONF COMM 3gpp_up enters comment 3gpp_up SOURce hw BB ARB WSEGment CONFigure...

Страница 560: ...rker signals in the individual segment waveform files are not considered Parameters Mode OFF MRK1 MRK2 MRK3 MRK4 OFF No additional marker is generated MRK1 MRK2 MRK3 MRK4 Generates a restart marker signal at the beginning of each seg ment for the corresponding marker The segment begin is defined by the low high slope of the marker This applies for switching between two segments as well as in case ...

Страница 561: ... is not considered TAKE The output waveform file contains the marker information as con figured in the individual waveform files RST TAKE Example BB ARB WSEG CONF SEL ConfComm BB ARB WSEG CONF MARK MODE TAKE SOURce hw BB ARB WSEGment CONFigure OFILe OFile This command defines the file name for the multi segment waveform This file name is stored in the configuration file and is used when a waveform...

Страница 562: ...tring Example MMEM CDIR var smbv user waveform sets the default directory to var smbv user waveform BB ARB WSEG CONF SEL multi_sin selects the configuration file multi_sin inf_mswv BB ARB WSEG CONF SEGM CAT queries the segments of the selected configuration file Response arb4 arb2 The configuration file includes the segments arb4 wv and arb2 wv Usage Query only SOURce hw BB ARB WSEGment CONFigure ...

Страница 563: ...EGM APP arb1 wv includes waveform arb1 wv as segment 1 in the configuration file The waveform must be available in the default directory BB ARB WSEG CONF OFIL multi_wv1 defines the file name multi_wv1 wv for the multi segment wave form BB ARB WSEG CRE new creates multi segment waveform multi_wv1 wv using the set tings of the configuration file new inf_mswv Usage Setting only SOURce hw BB ARB WSEGm...

Страница 564: ... next segment source BB ARB WSEG NEXT SOUR INT has been selected To perform a switchover to any segment within the multi segment file select the next segment with the command BB ARB WSEG NEXT This command is disabled if a sequencing play list is enabled Example BB ARB WSEG NEXT SOUR INT selects internal next segment source BB ARB WSEG NEXT 2 selects segment 2 to be output BB ARB WSEG NEXT EXEC exe...

Страница 565: ... NEXT BLANk ENDLess SEG0 SEG1 SEG31 0 maxSegment determines the action after completing the current segment like for instance which segment is processed after the processing of the current one is finished Example BB ARB WSEG SEQ SEL var smbv user waveform play_list_1 selects the sequencing list play_list_1 wvs BB ARB WSEG SEQ APP ON 3 15 BLANK appends the segment number 3 as a new segment to the s...

Страница 566: ...PRBS LENGth 549 SOURce hw BB DM PRESet 550 SOURce hw BB DM SOURce 550 SOURce hw BB DM SRATe 551 SOURce hw BB DM STANdard 551 SOURce hw BB DM STATe 551 SOURce hw BB DM SWITching SOURce 552 SOURce hw BB DM SWITching STATe 552 SOURce hw BB DM PATTern Pattern The command selects the data pattern for the internal data when PATTern is selected as the data source The maximum length is 64 bits Parameters ...

Страница 567: ...ource The command selects the data source Parameters Source ZERO ONE PRBS PATTern DLISt ZERO An internally generated 0 data sequence is used ONE An internally generated 1 data sequence is used PRBS The pseudo random sequence generator is used as the data source The length of the random sequence is defined with the aid of command SOURce BB DM PRBS PATTern Internally generated data with a fixed patt...

Страница 568: ...Ndard Standard The command selects the standard After selection modulation parameters Modulation Type BB DM FORMat Symbol Rate BB DM SRATe Filter BB DM FILTer TYPE and BB DM FILTer PARameter and Coding BB DM CODing are automatically set in accordance with the standard The USER parameter cannot be set A query returns this value if a user defined Custom Dig Mod setting was loaded or if one of the as...

Страница 569: ...trol RST INTernal Example BB DM SWIT INT the CW signal in the control list is used for the control SOURce hw BB DM SWITching STATe State The command enables switching between a modulated and an unmodulated signal Parameters State 0 1 OFF ON RST 0 Example BB DM SWIT STAT INT CW switching is active Clock Settings SOURce hw BB DM CLOCk MODE 552 SOURce hw BB DM CLOCk MULTiplier 553 SOURce hw BB DM CLO...

Страница 570: ... CLOC MULT 12 the multiplier for the external clock rate is 12 SOURce hw BB DM CLOCk SOURce Source The command selects the source for the digital modulation clock Parameters Source INTernal EXTernal INTernal The internal clock reference is used EXTernal The external clock reference is supplied to the CLOCK connector RST INTernal Example BB DM CLOC SOUR INT selects the internal clock reference SOUR...

Страница 571: ... work as a master one BB DM CLOC SYNC EXEC all synchronization s settings are adjusted accordingly Usage Event Trigger Settings The numeric suffix to OUTPut distinguishes between the available markers SOURce hw BB DM TRIGger ARM EXECute 554 SOURce hw BB DM TRIGger EXECute 555 SOURce hw BB DM TRIGger EXTernal SYNChronize OUTPut 555 SOURce hw BB DM TRIGger OUTPut DELay FIXed 556 SOURce hw BB DM TRIG...

Страница 572: ...UTO must be selected using the command BB DM TRIG SEQ Example BB DM TRIG SOUR INT sets internal triggering BB DM TRIG SEQ RETR sets Retrigger mode i e every trigger event causes signal gen eration to restart BB DM TRIG EXEC executes a trigger Usage Event SOURce hw BB DM TRIGger EXTernal SYNChronize OUTPut Output enabled for Trigger Source External Enables disables output of the signal synchronous ...

Страница 573: ...r SOURce hw BB DM TRIGger OUTPut DELay FIXed Fixed The command restricts the marker delay setting range to the dynamic range In this range the delay can be set without restarting the marker and signal If a delay is entered in setting ON but is outside this range the maximum possible delay is set and an error message is generated The numeric suffix in OUTPut has no significance for this command sin...

Страница 574: ...RIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range BB DM TRIG OUTP DEL MAX queries the maximum of the dynamic range Response 2000 the maximum for the marker delay setting is 2000 symbols Usage Query only SOURce hw BB DM TRIGger RMODe The command displays the status of signal generation for all trigger modes with digital modulation on Return values RMode STOP R...

Страница 575: ...ange 1 to 4294967295 RST 1000 Default unit symbol Example BB DM SEQ SING sets trigger mode Single BB DM TRIG SLEN 200 sets a sequence length of 200 symbols 200 symbols will be output after the next trigger event SOURce hw BB DM TRIGger SOURce Source The command selects the trigger source Parameters Source INTernal EXTernal INTernal Triggering is executed by means of the Trigger command SOURce BB D...

Страница 576: ...a delay of 50 symbols for the trigger SOURce hw BB DM TRIGger EXTernal ch INHibit Inhibit The command specifies the number of symbols by which a restart is to be inhibited fol lowing a trigger event This command applies only in the case of external triggering Parameters Inhibit float Range 0 to 67108863 RST 0 Default unit symbol Example BB DM TRIG SOUR EXT selects an external trigger via the TRIGG...

Страница 577: ...Signal generation is stopped with comman SOUR BB DM TRIG ARM EXEC and star ted again when a trigger event occurs SINGle The modulation signal is generated only when a trigger event occurs After the trigger event the signal is generated once to the set sequence length SOUR BB DM TRIG SLEN Every subse quent trigger event caused a restart RST AUTO Example BB DM SEQ AAUT sets the Armed_auto trigger mo...

Страница 578: ...nding to the Time Off Time On specifications in the commands SOURce BB DM TRIGger OUTPut OFFT and SOURce BB DM TRIGger OUTPut ONT is generated RST RATio Example BB DM TRIG OUTP2 MODE PULS selects the pulsed marker signal on output MARKER 2 SOURce hw BB DM TRIGger OUTPut ch OFFTime OffTime The command sets the number of symbols in a period ON time OFF time during which the marker signal in setting ...

Страница 579: ... to a bit pattern on output MARKER 2 SOURce hw BB DM TRIGger OUTPut ch PULSe DIVider Divider The command sets the divider for Pulse marker mode SOUR BB DM TRIGr OUTP MODE PULSe The resulting pulse frequency is derived by dividing the symbol rate by the divider Parameters Divider integer Range 2 to 1024 Increment 1 RST 2 Example BB DM TRIG OUTP2 PULS DIV 2 sets the divider to 2 for the marker signa...

Страница 580: ...ameter LPASSEVM 564 SOURce hw BB DM FILTer PARameter PGAuss 564 SOURce hw BB DM FILTer PARameter RCOSine 564 SOURce hw BB DM FILTer PARameter SPHase 564 SOURce hw BB DM FILTer PARameter APCO25 564 SOURce hw BB DM FILTer PARameter COSine BANDwidth 565 SOURce hw BB DM FILTer PARameter APCO25Lsm GAUSs 565 SOURce hw BB DM FILTer PARameter APCO25Lsm LOWPass 565 SOURce hw BB DM FILTer TYPE 565 SOURce hw...

Страница 581: ...uss SOURce hw BB DM FILTer PARameter RCOSine RCosine SOURce hw BB DM FILTer PARameter SPHase SPhase SOURce hw BB DM FILTer PARameter APCO25 Apco25 The command sets the roll off factor for filter type APCO25 On selecting filter APCO25 the filter parameter is set to the default value Parameters Apco25 float Range 0 05 to 0 99 Increment 0 01 RST 0 2 Cosine float Range 0 05 to 1 0 Increment 0 01 RST 0...

Страница 582: ...nt 1E 3 RST 270833 333 Example BB DM FILT TYPE COS BB DM FILT PAR COS BAND 7200 SOURce hw BB DM FILTer PARameter APCO25Lsm GAUSs FiltParm SOURce hw BB DM FILTer PARameter APCO25Lsm LOWPass FiltParm Sets the cut off frequency for the lowpass gauss filter Parameters FiltParm float Range 400 to 25E6 Increment 1E 3 RST 270833 333 Example BB DM FILT TYPE APCO25Lsm BB DM FILT PAR APCO25L LOWP 5166 667 B...

Страница 583: ...OURce hw BB DM FORMat 567 SOURce hw BB DM FSK DEViation 568 SOURce hw BB DM FSK VARiable SYMBol ch DEViation 568 SOURce hw BB DM FSK VARiable TYPE 568 SOURce hw BB DM MDELay 569 SOURce hw BB DM AQPSk ANGLe Angle For AQPSK modulation sets the angle alpha between the point 0 0 and the I axis Parameters Angle float Range 0 to 180 Increment 0 01 RST 0 Default unit Deg Example BB DM FORM AQPS selects m...

Страница 584: ...FTS INMarsat VDL EDGE APCO25FSK ICO CDMA2000 WCDMA APCO258PSK DPHS Phase Difference DGRay Difference Gray RST INTernal Example BB DM COD GRAY selects GRAY coding This coding is valid for all modulation types SOURce hw BB DM FORMat Format The command selects the modulation type If the coding that is set BB DM COD is not possible with the modulation type selected it is automatically set to OFF BB DM...

Страница 585: ...cy deviation to 10 MHz SOURce hw BB DM FSK VARiable SYMBol ch DEViation Deviation The command sets the deviation of the selected symbol for variable FSK modulation mode Suffix ch 0 16 The number of symbols and therefore the suffix range depends on the selected FSK modulation type Parameters Deviation float The range of values depends on the symbol rate that is set see data sheet and the maximum de...

Страница 586: ...nse 0 4 ms the delay is 0 4 ms Usage Query only Power Ramp SOURce hw BB DM PRAMp ATTenuation 569 SOURce hw BB DM PRAMp BBONly STATe 570 SOURce hw BB DM PRAMp FDELay 570 SOURce hw BB DM PRAMp RDELay 570 SOURce hw BB DM PRAMp SHAPe 570 SOURce hw BB DM PRAMp SOURce 571 SOURce hw BB DM PRAMp TIME 571 SOURce hw BB DM PRAMp STATe 571 SOURce hw BB DM PRAMp ATTenuation Attenuation The command sets the lev...

Страница 587: ...he command sets the delay in the falling edge A positive value gives rise to a delay and a negative value causes an advance The setting is expressed in symbols Parameters FDelay float Range 4 to 4 Increment 0 01 RST 0 Default unit symbol Example BB DM PRAM FDEL 1 The falling edge starts 1 symbol later SOURce hw BB DM PRAMp RDELay RDelay The command sets the delay in the rising edge A positive valu...

Страница 588: ...trol is in use the list to be used is defined selected and enabled with the aid of SOURce BB DM CLISt commands RST INTernal Example BB DM PRAM SOUR INT enables the use of internal control signals for power ramp control SOURce hw BB DM PRAMp TIME Time The command sets the power ramping rise time and fall time for a burst Parameters Time float Range 0 25 to 16 Increment 0 01 RST 1 Default unit symbo...

Страница 589: ...hanged in any other way e g by directly accessing the file system the lists are no longer recognized and therefore invalid Since the format of control lists refer to the input the CLISt commands always create a binary control list even if ASCII format is specified Note therefore if you want to create a wv file with R S WinIQSIM2 using a control list you have to use the input control list in ASCII ...

Страница 590: ...D 583 SOURce hw BB DM STANdard ULISt STORe 583 SOURce hw BB DM CLISt CATalog SOURce hw BB DM DLISt CATalog SOURce hw BB DM FLISt CATalog SOURce hw BB DM MLISt CATalog Queries the user mapping lists present in the default directory The default directory is set using command MMEM CDIRectory When the names of the files are returned they are separated by commas The command only reads out files with th...

Страница 591: ... CDIRectory A path can be specified in which case the source file is copied into the file list name in the specified directory The file extension may be omitted Only files with the file extension dm_iqc will be copied see also table 7 2 Setting parameters Filename string Example BB DM DLIS d_list1 selects data list d_list1 BB DM DLIS COPY d_list2 copies the content of data list d_list1 into data l...

Страница 592: ...I should be used to set the termination character mode to EOI control data message only so that a random LF in the data sequence is not interpreted as End thereby prematurely terminating the data transmission The command LTER STANdard resets the mode For query purposes the command FORMat ASCii PACKed can be used to switch between the formats The byte sequence is defined in the IEC bus standard as ...

Страница 593: ...in the currently selected list Return values Points integer Range 0 to INT_MAX Increment 1 RST 0 Example BB DM CLIS SEL c_list1 selects control list c_list1 BB DM CLIS POIN queries the number of lines in the control list Response 20 the control list consists of 20 lines Usage Query only SOURce hw BB DM CLISt SELect Filename The command selects the control list in the default directory The default ...

Страница 594: ...ad out starting from address 1 The command FORMat ASCii PACKed can be used to select the data format The byte sequence is defined in the IEC bus standard read write most significant byte first RST has no effect on data lists Parameters Data integer Example BB DM DLIS SEL dlist1 selects data list dlist1 If the file does not yet exist it is created BB DM DLIS DATA 1 1 1 0 0 0 1 1 0 1 sends the speci...

Страница 595: ...INts Points The command defines the number of bits in the selected data list to be utilized When a list is being filled with block data this data is only ever sent in multiples of 8 bits However the exact number of bits to be exploited can be set to a different figure The superfluous bits in the list are then ignored Parameters Points integer Range 0 to INT_MAX Increment 1 RST 0 Example BB DM DLIS...

Страница 596: ...ctory are read The file extension may be omitted Only files with the file extension vaf vaf will be deleted Setting parameters Filename string Example BB DM FILT TYPE USER selects the User filter type MMEM CDIR var smbv user Filter_List sets the default directory for the user defined filters BB DM FLIS DEL user_filter3 deletes the user defined filter Usage Setting only SOURce hw BB DM FLISt POINts...

Страница 597: ...pping file The default directory is set using command MMEM CDIRectory A path can also be specified in which case the files in the specified directory are read The file extension may be omitted Only files with the file extension vam will be deleted Setting parameters Filename string Example BB DM FORM USER selects the User modulation type MMEM CDIR var smbv user mapping_List sets the default direct...

Страница 598: ...tings in the default directory The default directory is set using command MMEM CDIRectory Only files with the file extension dm will be listed Return values Catalog string Example MMEM CDIR var smbv user dig_mod sets the default directory BB DM SETT CAT reads out all the files with Custom Digital Modulation settings in the default directory Response DM_1 the file DM_1 with Custom Digital Modulatio...

Страница 599: ...iles in the specified directory are read Only the file name has to be entered User Standards are stored as files with the specific file extensions dm Setting parameters Filename string Example BB DM STAN ULIS STOR DM_QAM stores the current Custom Digital Modulation settings into file DM_QAM Usage Setting only SOURce hw BB DM SETTing STORe FAST Fast Determines whether the instrument performs an abs...

Страница 600: ... only SOURce hw BB DM STANdard ULISt LOAD Filename This command loads the selected file with Digital Standard settings The directory is set using command MMEM CDIRectory A path can also be specified in which case the files in the specified directory are read The file extension may be omitted Only files with the file extension dm_stu will be loaded Setting parameters Filename string Example BB DM S...

Страница 601: ...ode Selects the graphical signal display Parameters Mode IQ VECTor CCDF PSPectrum CONStellation EYEI EYEQ RST IQ Example BB GRAP MODE VECT selects vector diagram SOURce hw BB GRAPhics SMARt STATe State Activates deactivates the smart graphics Parameters State 0 1 OFF ON RST 0 Example BB GRAP SMAR STAT ON Activates smart graphics SOURce hw BB GRAPhics SRATe MODE Mode Sets how the time resolution of...

Страница 602: ...mode SOURce hw BB GRAPhics SRATe USER User Enabled for BB GRAPH SRAT MODE USER Selects the signal bandwidth for which the display is to be generated The setting range moves between the minimum and maximum bandwidth which is possible for the selected display The selection is made graphically by moving the pointer Parameters User float Range 0 1 to 100 Increment 0 1 RST 10 Default unit PCT Example B...

Страница 603: ...eeded by enter ing a Marker Delay in the Trigger Marker menu of the active standard RST SOFTware Example BB GRAP TRIG SOUR MARK sets the trigger source 7 14 3 5 SOURce BB IMPairment Subsystem This subsystem contains the commands for the digital I Q impairments Included in this section is also the description of command SOURce BB IQOutput SOURce that determined the source for the I Q output connec ...

Страница 604: ...in percent is rounded to the closest valid value in dB A query returns the value in dB Parameters IqRatio float Range 1 to 1 Increment 1E 4 RST 0 Example BB IMP IQR 3 PCT sets the imbalance to 3 percent BB IMP IQR queries the imbalance Response 0 259000 the value is returned in dB BB IMP IQR 1 sets the imbalance to 1 dB SOURce hw BB IMPairment LEAKage I I This command sets the carrier leakage ampl...

Страница 605: ... reached by compensation for I Q skew and fre quency response correction RST FAST Example BB IMP OPT MODE FAST sets the optimization mode Fast SOURce hw BB IMPairment OPTimization STATe State This command activates and deactivates internal compensation of signal distortions by the I Q modulator Parameters State 0 1 OFF ON RST OFF Example BB IMP OPT STAT ON activates internal compensation of signal...

Страница 606: ...0E 9 sets the I Q skew SOURce hw BB IMPairment STATe State The command activates ON and deactivates OFF the three impairment or correction values LEAKage QUADrature and IQRatio for the digital baseband signal prior to input into the I Q modulator Parameters State 0 1 OFF ON RST 0 Example BB IMP STAT OFF deactivates digital impairment 7 14 3 6 SOURce BB MCCW Subsystem This subsystem contains the co...

Страница 607: ...94 SOURce hw BB MCCW CFACtor MODE 595 SOURce hw BB MCCW CLOCk 595 SOURce hw BB MCCW EDIT CARRier EXECute 596 SOURce hw BB MCCW EDIT CARRier PHASe STEP 596 SOURce hw BB MCCW EDIT CARRier PHASe STARt 597 SOURce hw BB MCCW EDIT CARRier POWer STEP 597 SOURce hw BB MCCW EDIT CARRier POWer STARt 597 SOURce hw BB MCCW EDIT CARRier STARt 598 SOURce hw BB MCCW EDIT CARRier STATe 598 SOURce hw BB MCCW EDIT ...

Страница 608: ...CW CARRier LIST PHASe Start Count The command sets the start phase of the carrier with the aid of a value list The first value in the list is assigned to the carrier with index 0 the second value to the carrier with index 1 etc The maximum length corresponds to the maximum number of multi carriers There is no need to enter all the values every time Values not set by the value list are set with the...

Страница 609: ...ange 1 to lastCarrier Return values Pow Pow float Example BB MCCW CARR LIST POW 65 dB 30 dB 50 dB sets the power of carrier 0 to 65 dB carrier 1 to 30 dB and so on BB MCCW CARR LIST POW 2 3 queries the power of carrier 1 and 2 Response 30 50 SOURce hw BB MCCW CARRier LIST STATe Stat0 Stat1 SOURce hw BB MCCW CARRier LIST STATe Start Count The command switches the carrier on or off with the aid of a...

Страница 610: ...Increment 0 01 RST 0 Default unit DEG Example BB MCCW CARR PHAS 15 90 sets a start phase of 90 DEG for carrier 15 SOURce hw BB MCCW CARRier POWer Power The command sets the power of the selected carrier Parameters Power float Sets the power of the selected carrier Range 80 to 0 Increment 0 01 RST 0 Example BB MCCW CARR POW 15 50 dB sets the power of carrier 15 to 50 dB SOURce hw BB MCCW CARRier SP...

Страница 611: ...table Index 0 cor responds to number 1 first line in the table Therefore switching the state of the channel via remote control always switches the state of channel index 1 in the table Parameters State 0 1 OFF ON RST 0 Example BB MCCW CARR STAT 15 ON switches carrier 16 on SOURce hw BB MCCW CFACtor CFactor The command sets the desired crest factor for the multi carrier signal on selection of the c...

Страница 612: ... and have the same amplitude The computation time is independent of the number of carriers In other carrier configurations the achievable crest factor is worse SLOW The crest factor entered using SOURceBB MCCW CFACtor is maintained for all carrier configurations by means of automatic settings The computation time depends on the number of carriers and on the crest factor that has been set Computati...

Страница 613: ... MCCW EDIT CARR EXEC adopts the settings for all the carriers in the carrier range BB MCCW STAT starts generation of the multi carrier signal Carriers 4 to 400 are in the ON state Usage Event SOURce hw BB MCCW EDIT CARRier PHASe STEP Step The command sets the step width by which the start phases of the carriers in the defined carrier range will be incremented The phase settings are only valid if o...

Страница 614: ...e carrier range SOURce hw BB MCCW EDIT CARRier POWer STEP Step The command sets the step width by which the starting power of the carriers in the defined carrier range will be incremented Parameters Step float Range 80 to 80 Increment 0 01 RST 0 Example BB MCCW EDIT CARR POW 80dB sets a power of 80 dB for the carriers in the carrier range BB MCCW EDIT CARR POW STEP 1 dB the power phase is incremen...

Страница 615: ...Rce hw BB MCCW EDIT CARRier STATe State The command switches all the carriers in the selected carrier range on or off Parameters State 0 1 OFF ON RST 1 Example BB MCCW EDIT CARR STAT ON sets all the carriers in the carrier range to ON SOURce hw BB MCCW EDIT CARRier STOP Stop The command selects the last carrier in the carrier range to which the settings with the BB MCCW EDIT CARR commands shall ap...

Страница 616: ...ion for trigger modes Armed_Auto and Armed_Ret rigger A subsequent internal or external trigger event restart signal generation Example BB MCCW TRIG SOUR INT sets internal triggering BB MCCW TRIG SEQ ARET sets Armed_Retrigger mode i e every trigger event causes signal generation to restart BB MCCW TRIG EXEC executes a trigger signal generation is started BB MCCW TRIG ARM EXEC signal generation is ...

Страница 617: ...ssing time and starts with sample 0 i e the complete signal is outputted This mode is recommended for triggering of short signal sequen ces with signal duration comparable with the processing time of the instrument RST 1 Example BB MCCW TRIG SOUR EXT sets external triggering BB MCCW TRIG EXT SYNC OUTP ON enables synchrounous output to external trigger SOURce hw BB MCCW TRIGger OBASeband DELay Dela...

Страница 618: ...triggered modes or signal generation was stopped by the com mand BB MCCW TRIG ARM EXECute armed trigger modes only Example SOURBB MCCW TRIG SOUR EXT sets external triggering via the TRIGGER 1 connector SOURBB MCCW TRIG MODE ARET selects the Armed_Retrigger mode SOURBB MCCW TRIG RMOD queries the current status of signal generation Response RUN the signal is generated an external trigger was execute...

Страница 619: ...al Triggering is executed by means of the signal on the TRIGGER 1 connector RST INT Example BB MCCW TRIG SOUR INT sets internal triggering SOURce hw BB MCCW TRIGger EXTernal ch DELay Delay The command specifies the trigger delay expressed as a number of samples for external triggering Parameters Delay float Range 0 to 65535 Increment 0 01 RST 0 Example BB MCCW TRIG SOUR EXT selects an external tri...

Страница 620: ...started again when a trig ger event occurs ARETrigger The multi carrier signal is generated only when a trigger event occurs The device automatically toggles to RETRIG mode Every subsequent trigger event causes a restart Signal generation is stopped with command SOURBB MCCW TRIG ARM EXEC and started again when a trigger event occurs SINGle The multi carrier signal is output only when a trigger eve...

Страница 621: ... and an error message is generated The numeric suffix in OUTPut has no significance for this command since the setting always affects every marker Parameters Fixed 0 1 OFF ON RST 0 Example BB MCCW TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range SOURce hw BB MCCW TRIGger OUTPut ch DELay Delay The command defines the delay between the signal on the marker ou...

Страница 622: ...ly SOURce hw BB MCCW TRIGger OUTPut ch DELay MINimum The command queries the minimum marker delay for set ting BB MCCW TRIGger OUTPut DELay FIXed ON Return values Minimum float Range 0 to 16777215 Increment 1E 3 RST 0 Example BB MCCW TRIG OUTP DEL FIX ON restricts the marker signal delay setting range to the dynamic range BB MCCW TRIG OUTP DEL MIN queries the minimum of the dynamic range Response ...

Страница 623: ...ifications in the commands SOURce BB MCCW TRIGger OUTPut OFFT and SOURce BB MCCW TRIGger OUTPut ONT is generated RST RESTart Example BB MCCW TRIG OUTP2 MODE PULS selects the pulsed marker signal on output MARKER 2 SOURce hw BB MCCW TRIGger OUTPut ch OFFTime OffTime SOURce hw BB MCCW TRIGger OUTPut ch ONTime OnTime The command sets the number of samples in a period ON time OFF time during which the...

Страница 624: ...2 BB MCCW TRIG OUTP2 FREQ queries the resulting pulse frequency of the marker signal Response 66 000 the resulting pulse frequency is 66 kHz SOURce hw BB MCCW TRIGger OUTPut ch PULSe FREQuency The command queries the pulse frequency of the pulsed marker signal in the setting SOUR BB MCCW TRIG OUTP MODE PULS The pulse frequency is derived by dividing the symbol rate by the divider The divider is de...

Страница 625: ...CLOCK connector and the sample clock is derived internally from this The multiplier is entered with the command BB MCCW CLOCk MULTiplier Parameters Mode SAMPle MSAMple RST SAMPle Example BB MCCW CLOC MODE SAMP selects clock type Sample i e the supplied clock is a sample clock SOURce hw BB MCCW CLOCk MULTiplier Multiplier The command specifies the multiplier for clock type Multiple Samples BB MCCW ...

Страница 626: ...neration of very precise synchronous signal of several connected R S SMBVs Note If several instruments are connected the connecting cables from the master instrument to the slave one and between each two consecutive slave instruments must have the same length and type Avoid unnecessary cable length and branching points Parameters Mode NONE MASTer SLAVe NONE The instrument is working in stand alone...

Страница 627: ... can be routed to path A path B or both paths The external baseband signal B can be routed to path B only SOURce BBIN ALEVel EXECute 610 SOURce hw BBIN CDEVice 610 SOURce BBIN CFACtor 611 SOURce hw BBIN DIGital ASETting STATe 611 SOURce BBIN FOFFset 611 SOURce BBIN IQSWap STATe 612 SOURce hw BBIN MPERiod 612 SOURce BBIN OLOad HOLD RESet 612 SOURce BBIN OLOad HOLD STATe 613 SOURce BBIN OLOad STATe ...

Страница 628: ...tes automatic adjustment of the baseband input signal The R S SMBV receives PEP level and crest factor values directly from the connected transmitter and recognizes changes automatically Parameters State 0 1 OFF ON RST 0 Example BBIN DIG ASET STAT ON switches on automatic adjustment of the baseband input signal SOURce BBIN FOFFset FOffset This command enters the frequency offset for the external b...

Страница 629: ... the I and Q channel of the external baseband signal SOURce hw BBIN MPERiod MPeriod Sets the recording duration for measuring the baseband input signal by Auto Level Set Parameters MPeriod float Range 1 to 32 Increment 1 RST 2 Default unit s Example BBIN MPER 4s sets the recording duration for Auto Level Set to 4 seconds SOURce BBIN OLOad HOLD RESet This command executes a reset of the Overload Ho...

Страница 630: ...the overload state Response 0 the AC DC converter has not been overloaded Usage Query only SOURce BBIN OLOad STATe This command queries the current overload state of the A D converter Return values State 0 1 OFF ON RST 0 Example BBIN MODE DIG selects the digital baseband input mode BBIN OLO STAT queries the overload state Response 0 The AC DC converter is not overloaded Usage Query only SOURce BBI...

Страница 631: ...h BBinR Revision 03 00 or higher Return values Actual float Range 400 Hz to 100 MHz Example BBIN SRAT queries the sample rate value of the external digital baseband sig nal Usage Query only SOURce hw BBIN SRATe FIFO STATus This command indicates the state of the signal transmission Return values Status OK OFLow URUN OK Resampling is working properly OFL Overflow The external sample rate frequency ...

Страница 632: ...gnal must be applied at the inputs I and Q BBIN STAT ON switches on the Baseband In block The external analog signal is A D converted and fed into the digital signal 7 14 5 SOURce CORRection Subsystem The output level is corrected in the CORRection subsystem Correction is performed by user defined table values being added to the output level for the respective RF frequency In the R S SMBV this sub...

Страница 633: ...n CSET DELete 618 SOURce hw CORRection DEXChange AFILe CATalog 619 SOURce hw CORRection DEXChange AFILe EXTension 619 SOURce hw CORRection DEXChange AFILe SELect 620 SOURce hw CORRection DEXChange AFILe SEParator COLumn 620 SOURce hw CORRection DEXChange AFILe SEParator DECimal 621 SOURce hw CORRection DEXChange EXECute 621 SOURce hw CORRection DEXChange MODE 621 SOURce hw CORRection DEXChange SEL...

Страница 634: ...of frequency values in the selected table The numerical suffix at SOURce must not be used for this command Return values Points float Example CORR CSET var smbv Lists ucor ucor1 selects the table ucor1 CORR CSET DATA FREQ POIN queries the number of frequency values in the table ucor1 Response 440 the table ucor1 contains 440 frequency values Usage Query only SOURce hw CORRection CSET DATA POWer Po...

Страница 635: ...elected by the suffix in key word SENSe of the command header Suffix ch 1 3 Suffix 1 denotes the sensor connected to the SENSOR connector suffix 2 the sensor connected first to one of the USB interfaces and suffix 3 the sensor connected second to one of the USB inter faces Example CORR CSET DATA SENS POW SONC fills the user correction list with level values acquired by the power sensor connector t...

Страница 636: ...y for the ASCII files with frequency and level value pairs CORR DEXC AFIL EXT TXT selects that ASCII files with extension txt are listed CORR DEXC AFIL CAT queries the available files with extension txt Response ucor1 ucor2 the ASCII files ucor1 txt and ucor2 txt are available Usage Query only SOURce hw CORRection DEXChange AFILe EXTension Extension The command selects the file extension of the AS...

Страница 637: ...cor csv selects that ASCII file ucor csv is imported CORR DEXC SEL var smbv user ucor import ucor_imp selects that the ASCII file ucor csv is imported into user correction list ucor_imp SOURce hw CORRection DEXChange AFILe SEParator COLumn Column The command selects the separator between the frequency and level column of the ASCII table Parameters Column TABulator SEMicolon COMMa SPACe RST SEMicol...

Страница 638: ...URce hw CORRection DEXChange EXECute The command starts the export or import of the selected file When import is selected the ASCII file is imported as user correction list When export is selected the user cor rection list is exported into the selected ASCII file Example CORR DEXC MODE IMP selects that ASCII files with frequency and level value pairs are imported and transferred into user correcti...

Страница 639: ... command SOUR CORR DEXC SEL in which case the files are stored or loaded in the specified directory Parameters Select list name Example CORR DEXC MODE IMP selects that ASCII files with frequency and level value pairs are imported and transferred into user correction lists CORR DEXC AFIL SEL var smbv user ucor import ucor csv selects that ASCII file ucor csv is imported CORR DEXC SEL var smbv user ...

Страница 640: ...orrection SOURce hw CORRection VALue The command requests the current value for user correction Return values Value float Example CORR VAL queries the value currently used for level correction Response 3 the correction value is 3 dB Usage Query only 7 14 6 SOURce FM Subsystem The FM subsystem contains the commands for checking the frequency modulation The settings for the internal modulation sourc...

Страница 641: ...n deviation to 5 kHz Usage SCPI confirmed SOURce hw FM EXTernal COUPling Coupling The command selects the coupling mode for the external modulation input in the case of frequency modulation Note Coupling for external feed via input EXT MOD can be set independently for mod ulations AM FM and PhiM Parameters Coupling AC DC AC The DC voltage component is disconnected from the modulation signal DC The...

Страница 642: ...itivity The command queries the input sensitivity of the EXT MOD input in Hz V The command is only effective if the external modulation source is selected SOUR FM SOUR EXT The returned value depends on the modulation deviation set ting SOUR FM DEViation This value is assigned to the voltage value for full mod ulation of the input signal Return values Sensitivity float Example FM DEV 5E3 sets a mod...

Страница 643: ...rs State 0 1 OFF ON RST OFF Example FM STAT ON Activates FM modulation Usage SCPI confirmed 7 14 7 SOURce FREQuency Subsystem This subsystem contains the commands used to define the frequency settings for the RF sources and sweeps SOURce hw FREQuency CENTer 627 SOURce hw FREQuency LOSCillator MODE 627 SOURce hw FREQuency LOSCillator OUTPut STATe 628 SOURce hw FREQuency CW FIXed 628 SOURce hw FREQu...

Страница 644: ...ted using the following formula 300 kHz OFFSet RFmax OFFSet Parameters Center float Range 300kHz to RFmax RFmax depending on model Increment 0 01Hz RST 300MHz Default unit Hz Example FREQ CENT 400 MHz sets the center frequency for the frequency sweep to 400 MHz FREQ SPAN 200 MHz sets a span of 200 MHz This sets the sweep range to 300 MHz to 500 MHz Usage SCPI confirmed SOURce hw FREQuency LOSCilla...

Страница 645: ...s set under SOURce 1 2 FREQuency STEP As with the FREQ value entered in the display the OFFSet value is also taken into consideration with this command The specified value range is therefore only effective if OFFSet is set to 0 The value range for other OFFset values can be calculated using the following formula 300 kHz OFFSet RFmax OFFSet Correlation FREQ for FREQ MODE SWE is linked to sweep freq...

Страница 646: ... Each sweep step is triggered by a separate SOUR FREQ MAN command UP or DOWN trigger the next sweep step in direction of higher or lower frequencies As with the Frequency value entered in the header the OFFSet value is also taken into consideration with this command The specified value range is therefore only effective if OFFSet is set to 0 The value range for other OFFset values can be calculated...

Страница 647: ...SPAN MANual LIST The instrument processes a list of frequency and level settings for the selected path The List mode settings are made in the SOURce LIST Subsys tem subsystem The setting SOURce FREQuency MODE LIST also sets the command SOURce POWer MODE automatically to LIST Correlation FREQ MODE LIST sets POW MODE LIST RST CW Example FREQ MODE SWE sets the SWEep mode The settings under SOURce FRE...

Страница 648: ...z Default unit Hz Example FREQ OFFS 500kHz sets the frequency offset to 500 kHz Usage SCPI confirmed SOURce hw FREQuency SPAN Span This command specifies the span for the sweep This setting in combination with the center frequency setting SOUR FREQ CENT defines the sweep range This command is linked to the commands SOUR FREQ STAR and SOUR FREQ STOP i e changing these values causes the SPAN value t...

Страница 649: ... OFFSet Parameters Start float Range 300kHz to RFmax Increment 0 01Hz RST 100MHz Example FREQ STARt 1 MHz sets the start frequency for the frequency sweep to 1 MHz FREQ STOP 2 GHz sets the stop frequency for the frequency sweep to 2 GHz Usage SCPI confirmed SOURce hw FREQuency STOP Stop This command sets the stop frequency for the sweep mode STOP can be less than STARt This command is linked to th...

Страница 650: ... Variation Active on Parameters Increment float Range 0Hz to RFmax 100kHz Increment 0 01Hz RST 1MHz Example FREQ STEP 50 kHz sets the step width for the frequency setting to 50 kHz SOURce hw FREQuency STEP MODE Mode This command activates USER or deactivates DECimal the user defined step width used when varying the frequency value with the frequency values UP DOWN The com mand is linked to the com...

Страница 651: ...ut CLOCk IMPedance 634 SOURce hw INPut MODext IMPedance 634 SOURce INPut TRIGger BBANd SLOPe 635 SOURce INPut TRIGger IMPedance 635 SOURce INPut TRIGger LEVel 635 SOURce INPut TRIGger SLOPe 636 SOURce INPut DELay ADCState 636 SOURce INPut DELay SPOSition 636 SOURce INPut DELay CLENgth ch 637 SOURce INPut CLOCk IMPedance Impedance Selects the input impedance for the clock inputs 1kOhm GND should be...

Страница 652: ...rs SOURce INPut TRIGger IMPedance Impedance The command sets the impedance of the trigger and control signal inputs and affects TRIGGER inputs CLOCK inputs Parameters Impedance G1K G50 G1K 1 kOhm to ground G50 50 Ohm to ground RST G1K Example INP TRIG IMP G50 all trigger and control signal inputs are set to 50 ohm to ground This setting is recommended in the case of high clock rates SOURce INPut T...

Страница 653: ...C connector at the rear of the instrument Parameters Slope NEGative POSitive RST POSitive Example INP TRIG SLOP NEG activates the falling slope of the external trigger signal at the trigger input SOURce INPut DELay ADCState State Enables disables the automatic delay compensation Parameters State 0 1 OFF ON RST 0 Example see example for SOURce INPut DELay CLENgth ch on page 637 SOURce INPut DELay S...

Страница 654: ...ample Setting in the second slave instrument Slave 2 SOURce INPut DELay SPOSition 2 SOURce INPut DELay CLENgth1 1 SOURce INPut DELay CLENgth2 0 5 SOURce INPut DELay ADCState ON 7 14 9 SOURce IQ Subsystem This subsystem contains the commands for checking the I Q modulation SOURce hw IQ CREStfactor 637 SOURce hw IQ IMPairment IQRatio MAGNitude 638 SOURce hw IQ IMPairment LEAKage I 638 SOURce hw IQ I...

Страница 655: ...ment LEAKage I I This command sets the carrier offset for the I channel of the I Q modulation Parameters I float Range 10 to 10 Increment 0 02PCT RST 0 Default unit PCT Example IQ IMP LEAK I 3 PCT sets the leakage for the I channel to 3 percent SOURce hw IQ IMPairment LEAKage Q Q This command sets the carrier leakage amplitude for the Q channel of the I Q modulation Parameters Q float Range 10 to ...

Страница 656: ...tate 0 1 OFF ON RST OFF Example IQ IMP OFF deactivates I Q impairment SOURce hw IQ SOURce Source This command selects the input signal for the I Q modulator Selecting ANALog Wideband I Q In switches off SOURce AM STATe OFF SOURce BBAM STATe OFF SOURce BB DM STATe OFF SOURce BB Dig Standard STATe OFF Parameters Source BASeband ANALog RST BASeband Example IQ SOUR ANAL selects an external analog sign...

Страница 657: ...m contains the commands for configuring the differential output For information about the required options see chapter 5 6 3 2 Analog I Q Out put on page 265 SOURce hw IQ OUTPut BIAS OPTimization RF STATe 640 SOURce hw IQ OUTPut LEVel 641 SOURce hw IQ OUTPut ANALog POWer PEP 641 SOURce hw IQ OUTPut ANALog POWer PEP RESult 641 SOURce hw IQ OUTPut MODE 641 SOURce hw IQ OUTPut POWer DATTenuation 642 ...

Страница 658: ...meters Pep float Range 0 02 to 2 Increment 0 001 RST 1 Default unit V Example IQ OUTP POW PEP 2 V sets a off load level of 2 V SOURce hw IQ OUTPut ANALog POWer PEP RESult Displays the resulting output off load voltage of both signal components at the rear panel Return values Result float Range 0 02 to 4 Increment 0 001 RST 1 Usage Query only SOURce hw IQ OUTPut MODE Mode This command selects the m...

Страница 659: ...T FIXed Example SOUR IQ OUTP MODE VAR SOUR IQ OUTP ANAL POW PEP 2V SOURce hw IQ OUTPut POWer DATTenuation DAttenuation The level of the baseband and the RF signal is attenuated by this value Parameters DAttenuation float Range 3 522 to 80 Increment 1E 3 RST 0 Default unit dB Example SOUR IQ OUTP MODE VATT SOUR IQ OUTP POW DATT 10dB The level of the baseband and RF signal is attenuated with 10dB SO...

Страница 660: ... SOURce hw IQ OUTPut DIGital POWer STEP MODE 646 SOURce hw IQ OUTPut POWer VIA 646 SOURce hw IQ OUTPut DIGital SRATe 646 SOURce hw IQ OUTPut DIGital SRATe SOURce 647 SOURce hw IQ OUTPut DIGital STATe 647 SOURce hw IQ OUTPut DIGital CDEVice Digital Output only This command indicates the ID of a connected R S Instrument or R S Device Return values CDevice string Example IQ OUTP DIG CDEV queries the ...

Страница 661: ...nse 0 no overflow Usage Query only SOURce hw IQ OUTPut DIGital PON Pon This command selects the state which the digital I Q Output is to assume after the instru ment is switched on Parameters Pon OFF UNCHanged RST OFF Example IQ OUTP DIG PON OFF deactivates the output when the instrument is switched on IQ OUTP DIG PON UNCH sets the output to the status that was active before the last switch off Op...

Страница 662: ...ange 90 to 0 Increment 0 01 RST 0 Default unit dBFS Example IQ OUTP DIG POW PEP 10 sets the signal output level to 10 dBFS Options B13 and B18 SOURce hw IQ OUTPut DIGital POWer STEP INCRement Increment The command sets the step width for the frequency setting if the frequency values UP DOWN are used and variation mode SOUR IQ OUTP DIG POW STEP MODE USER is selected The command is linked to Variati...

Страница 663: ...ptions B13 and B18 SOURce hw IQ OUTPut POWer VIA Via This command activates the selected I Q output level entry fields of the currently selected signal path in the status bar Parameters Via PEP LEVel PEP The signal level is expressed in terms of a peak envelope power value PEP The level entry fields and the corresponding units are displayed in the status bar LEVel The signal level is expressed in ...

Страница 664: ...e USER DIN DOUT USER DOUT USER The internally generated clock reference signal is used option R S SMBV B13 The sample rate is calculated and displayed in the field Value DOUT An external clock reference signal is used The clock signal is directly fed in via pin CLK2 of the digital output interface option R S SMBV B18 Digital I Q Out The sample rate is displayed in the field Value RST USER Example ...

Страница 665: ...uency 648 SOURce LFOutput FREQuency MANual 649 SOURce LFOutput FREQuency MODE 649 SOURce LFOutput FREQuency STARt 650 SOURce LFOutput FREQuency STOP 651 SOURce LFOutput STATe 651 SOURce LFOutput SWEep FREQuency DWELl 651 SOURce LFOutput SWEep FREQuency EXECute 651 SOURce LFOutput SWEep FREQuency MODE 652 SOURce LFOutput SWEep FREQuency POINts 652 SOURce LFOutput SWEep FREQuency SHAPe 653 SOURce LF...

Страница 666: ...AN Here only frequency values between the settings SOUR LFO FREQ STAR and STOP are per mitted Each sweep step is triggered by a separate SOUR LFO FREQ MAN command Parameters Manual float Range STARt to STOP Increment 0 1 Hz RST 1 kHz Example LFO SWE MODE MAN sets the Step sweep mode LFO FREQ MAN 5 kHz sets an LF frequency of 5 kHz for the next step in the Step sweep mode LFO FREQ MODE SWE sets the...

Страница 667: ...ive SOURce LFOutput FREQuency STARt Start This command sets the start frequency for the LF Sweep mode Parameters Start float Range 0 1 Hz to 1 MHz Increment 0 1 Hz RST 1 kHz Example RST activates all presettings LFO SWE MODE AUTO sets the AUTO sweep mode i e each trigger triggers a complete sweep TRIG0 SOUR SING sets the SINGle trigger mode i e the sweep is triggered by the command LFOutput SWEep ...

Страница 668: ... ON activates the LF output The settings under LFO FREQ and LFO SWE become effective SOURce LFOutput SWEep FREQuency DWELl Dwell The command sets the dwell time for each frequency step of the sweep Tip It is recommended to switch off the GUI Update for optimum sweep performance especially with short dwell times SYSTem DISPlay UPDate OFF Parameters Dwell float Range 10 0E 3 to 100 Increment 100 0E ...

Страница 669: ...he rotary knob under manual control or by means of a LFOutput FREQ MAN command under remote con trol With manual control the frequency increases or decreases depending on the direction of the rotary encoder by the value specified under SOUR LFO SWE FREQ STEP LIN linear spac ing or STEP LOG logarithmic spacing With remote control the frequency increases by the value speci fied under LFO SWE FREQ ST...

Страница 670: ... spacing LFO SWE POIN 11 sets 11 sweep steps for linear sweep spacing The sweep step width STEP is automatically set to 2 kHz SOURce LFOutput SWEep FREQuency SHAPe Shape The command sets the cycle mode for a sweep sequence shape Parameters Shape SAWTooth TRIangle SAWTooth One sweep runs from start to stop frequency Each subsequent sweep starts at the start frequency i e the shape of the sweep sequ...

Страница 671: ...ep spacing LFO SWE STEP 2 kHz sets the sweep step width to 2 kHz The number of sweep steps for linear sweep spacing POINts is automatically set to 11 SOURce LFOutput SWEep FREQuency STEP LOGarithmic Logarithmic The command specifies the step width factor for logarithmic sweeps The next frequency value of a sweep is calculated for STARt STOP using the following formula New frequency Old frequency S...

Страница 672: ...or The instrument is equipped with one LF geneator only and the suffix has no impact Parameters Shape SINE SQUare RST SINE Example LFO SHAP SQU selects a rectangular shape for the signal of the LF generator Usage SCPI confirmed SOURce LFOutput SIMPedance Simpedance The command selects the output impedance of the LF generator Selection LOW and 600 Ohm are available For instruments with older versio...

Страница 673: ...e length as the other components and as if all values are the same as the first value SOURce1 LIST FREQ 100 MHz 110 MHz 120 MHz SOURce1 LIST POW 2dBm 1dBm 0dBm 3 Select a list If a new empty file has been created with the LIST SEL command this file is selected otherwise an existing list must be selected before the List mode is activated SOURce1 LIST SEL Old_list 4 Set the dwell time The dwell time...

Страница 674: ...OURce hw LIST DEXChange SELect 662 SOURce hw LIST DWELl 663 SOURce hw LIST FREE 663 SOURce hw LIST FREQuency 663 SOURce hw LIST FREQuency POINts 664 SOURce hw LIST INDex 664 SOURce hw LIST INDex STARt 665 SOURce hw LIST INDex STOP 665 SOURce hw LIST LEARn 666 SOURce hw LIST MODE 666 SOURce hw LIST POWer 667 SOURce hw LIST POWer POINts 667 SOURce hw LIST RESet 667 SOURce hw LIST SELect 668 SOURce h...

Страница 675: ...in command SOUR LIST CAT in which case the file in the specified directory is deleted RST does not affect data lists Setting parameters Delete list file name Example MMEM CDIR var smbv Lists Listmode selects the directory for the list mode files LIST DEL LIST1 deletes the list list1 Usage Setting only SOURce hw LIST DELete ALL The command deletes all lists in the set directory The List mode must b...

Страница 676: ...re stored with the fixed file extensions txt or csv in a directory of the user s choice The directory applicable to the commands is defined with the command MMEMory CDIR Return values Catalog string Example MMEM CDIR var smbv lists listmode import selects the directory for the ASCII files with frequency and level value pairs LIST DEXC AFIL EXT TXT selects that ASCII files with extension txt are li...

Страница 677: ...ectory applicable to the commands is defined with the command MMEMory CDIR A path can also be specified in command SOUR LIST DEXC AFIL SEL in which case the files are stored or loaded in the speci fied directory Parameters Select ascii_file_name Example LIST DEXC MODE IMP selects that ASCII files with frequency and level value pairs are imported and transferred into list mode lists LIST DEXC AFIL ...

Страница 678: ... ASCII data between decimal point and comma with floating point numerals Parameters Decimal DOT COMMa RST DOT Example LIST DEXC MODE EXP selects that the list mode list is exported into an ASCII file LIST DEXC AFIL SEL var smbv user listmode import list csv selects ASCII file list csv as destination for the list mode list data LIST DEXC AFIL SEP COL TAB the pairs of frequency and level values are ...

Страница 679: ... destination for list mode lists and ASCII files Parameters Mode IMPort EXPort RST IMPort Example LIST DEXC MODE IMP selects that ASCII files with frequency and level value pairs are imported and transferred into list mode lists LIST DEXC AFIL SEL var smbv user listmode import list csv selects that ASCII file list csv is imported LIST DEXC SEL root var smbv user listmode import list_imp selects th...

Страница 680: ... mode list list_imp SOURce hw LIST DWELl Dwell The command sets the time for which the instrument retains a setting Parameters Dwell float Range 0 5 ms to 100 s Increment 1E 4 RST 10 0 ms Default unit s Example LIST DWEL 15 each setting in the list is retained for 15 ms SOURce hw LIST FREE This command queries on the free storage space for list mode lists Return values Free integer Range 0 to INT_...

Страница 681: ...t SOUR LIST FREQ 1 4GHz 1 3GHz 1 2GHz specifies the frequency values in list3 If the list already contains data it is overwritten Usage SCPI confirmed SOURce hw LIST FREQuency POINts The command queries the length in points of the FREQuency component of the selected list Return values Points float Example LIST SEL var smbv Lists Listmode list3 selects list3 for editing List3 is created if it does ...

Страница 682: ... the current list Only the values in the set index range LIST INDex STARt LIST INDex STOP are processed in List mode Parameters Start float Range 0 to list length RST 0 Example LIST SEL var smbv Lists Listmode list3 selects list3 for use in List mode LIST IND STAR 25 sets 25 as start index of the index range LIST IND STOP 49 sets 49 as stop index of the index range FREQ MODE LIST activates List mo...

Страница 683: ...ti vated for the first time these settings are calculated automatically Example LIST SEL var smbv Lists Listmode list3 selects list3 List3 is created if it does not yet exist LIST LEAR starts learning of the hardware setting for list3 and stores the set ting Usage Event SOURce hw LIST MODE Mode The command specifies how the list is to be processed similar to SOURce SWEep MODE Parameters Mode AUTO ...

Страница 684: ...ts Listmode list3 selects list3 for editing List3 is created if it does not yet exist LIST POW 0dBm 2dBm 2dBm 3dBm specifies the level values in list3 The number of level values must correspond to the number of frequency values The previous data is overwritten Usage SCPI confirmed SOURce hw LIST POWer POINts The command queries the length in points of the LEVel part of the selected list Return val...

Страница 685: ... list name Example LIST SEL var smbv Lists Listmode list3 selects list3 for editing List3 is created if it does not yet exist SOURce hw LIST TRIGger EXECute The command immediately starts the processing of a list in list mode It corresponds to the manual control command Execute Single Example SOUR LIST TRIG EXEC triggers the processing of the selected list Usage Event SOURce hw LIST TRIGger SOURce...

Страница 686: ...hw MODulation ALL STATe State The command switches the modulations on and off The command SOUR MOD ALL STAT OFF switches all modulations off A subsequent command SOUR MOD ALL STAT ON restores the status that was active before the last switch off MOD OFF is displayed in the info line of the header next to the Level field Parameters State 0 1 OFF ON Example MOD STAT OFF switches off all modulations ...

Страница 687: ...M STATe Usage SCPI confirmed Options R S SMBV K23 7 14 15 SOURce PHASe Subsystem This subsystem contains the commands for adjusting the phase of the RF output signal relative to a reference signal of the same frequency SOURce hw PHASe 670 SOURce hw PHASe REFerence 670 SOURce hw PHASe Phase The command specifies the phase variation relative to the current phase The variation can be specified in RAD...

Страница 688: ...ty 673 SOURce hw PM SOURce 673 SOURce hw PM STATe 673 SOURce hw PM DEViation Deviation The command sets the modulation deviation of the phase modulation in RAD The max imal deviation depends on the RF frequency set and the selected modulation mode see data sheet The deviation of the internal source must not exceed the deviation of the external source in case of modulation source Int Ext PM SOURce ...

Страница 689: ...dwidth The maximum range for modulation bandwidth is available How ever phase noise is increased for low frequencies The range for PhiM deviation is limited This mode is recommended for high modulation frequencies HDEViation The maximum range for PhiM deviation is available Phase noise is improved for low frequencies The range for modulation fre quency is limited see data sheet This mode is recomm...

Страница 690: ...alue for full modulation is 1V the resulting sen sitivity is precisely 1RAD V Usage Query only SCPI confirmed SOURce hw PM SOURce Source The command selects the modulation source for phase modulation Parameters Source INTernal EXTernal INT EXT INTernal INT is the LF generator The frequency of the internal modulation signal can be set in the SOURce LFOutput subsystem EXTernal The external signal is...

Страница 691: ...er ATTenuation RFOFf MODE 676 SOURce hw POWer LEVel IMMediate AMPLitude 676 SOURce hw POWer LEVel IMMediate OFFSet 677 SOURce hw POWer LEVel IMMediate RCL 677 SOURce hw POWer LIMit AMPLitude 678 SOURce hw POWer LMODe 678 SOURce hw POWer MANual 679 SOURce hw POWer MODE 680 SOURce hw POWer PEP 680 SOURce hw POWer POWer 680 SOURce hw POWer SPC CRANge 681 SOURce hw POWer SPC DELay 681 SOURce hw POWer ...

Страница 692: ...SONCe The command briefly activates level control for correction purposes Example POW ALC OFF deactivates automatic level control for RF output A POW ALC SONC level control is performed once only Usage Event SOURce hw POWer ALC STATe State The command activates deactivates automatic level control Parameters State 0 OFF AUTO 1 ON PRESet OFFTable ONSample ONTable OFFHighAccuracy ON Internal level co...

Страница 693: ...RFOF MODE FATT sets the RF OFF attenuator to maximum SOURce hw POWer LEVel IMMediate AMPLitude Amplitude The command sets the RF output level in CW mode In addition to numerical values it is also possible to specify UP and DOWN The level is then increased or decreased by the value specified under SOURce hw POWer STEP As with the Level value entered in the header the OFFSet value is also taken into...

Страница 694: ... the RF output level but rather the query value of POWer For more information see RF level vs RF output level on page 173 Only dB is permitted as the unit here The linear units V W etc are not permitted The keywords of this command are largely optional Therefore both the long and short form of the command are shown in the example Parameters Offset float Range 100 dB to 100 dB Increment 0 01 dB RST...

Страница 695: ...and SWEEP mode It does not influence the Level display or the response to the POW query command The value is not affected by an instrument preset PRESET key RST and the Save Recall function This parameter is influenced only by the factory preset SYST FPR and its factory value is equal to the upper limit Parameters Amplitude float Minimum level Maximum level The value range for the level setting va...

Страница 696: ...e SOUR POW MAN command As with the Level value entered in the RF Level menu the OFFSet value is also taken into consideration with this command The specified value range is therefore only effective if SOURce POWer OFFSet is set to 0 The value range for other OFFset values can be calculated using the following formula Minimum level OFFSet Maximum level OFFSet Parameters Manual float Minimum level M...

Страница 697: ...the SOURce LIST Subsys tem subsystem The setting SOURce POWer MODE LIST also sets the command SOURce FREQuency MODE automatically to LIST RST CW Example POW MODE SWEep sets the SWEep mode The settings under SOURce POW STARt STOP MANual become effective Usage SCPI confirmed SOURce hw POWer PEP With digital modulation and all digital standards the command returns the peak envelope power PEP in dBm t...

Страница 698: ...W POW 15 sets the RF level at output to 15 dBm SOURce hw POWer SPC CRANge PowCntrlCRange Defines the capture range of the power control system Within the range Target Level Catch Range the power control locks and tries to achieve the target level Readings outside the range are not considered Parameters PowCntrlCRange float Range 0 to 50 Increment 0 01 RST 30 Default unit dB Example POW SPC CRAN 15...

Страница 699: ...he sensor connected to a second USB interface for power control SOURce hw POWer SPC STATe PowCntrlState Activates power control using the selected sensor The control loop periodically adjusts the generator output After switching off the running loop is completed Parameters PowCntrlState 0 1 OFF ON RST 0 Example POW SPC STAT ON activates power control SOURce hw POWer SPC TARGet PowCntrlTarget Sets ...

Страница 700: ... 15 dBm for RF output A Usage SCPI confirmed SOURce hw POWer STEP INCRement Increment The command sets the step width for the level setting if UP and DOWN are used as the level values and variation mode SOUR POW STEP MODE USER is selected The com mand is linked to setting Variation Step for manual control i e the command also sets the step width of the rotary knob for Variation Active On Parameter...

Страница 701: ...el OFFSet Parameters Stop float Minimum level Maximum level The value range for the level setting varies according to the instru ment model The values are given in the data sheet Increment 0 01 dB RST 10 dBm Default unit dBm Example POW STOP 3 sets the stop level for the level sweep to 3 dBm for RF output A Usage SCPI confirmed 7 14 18 SOURce PULM Subsystem This subsystem contains the commands for...

Страница 702: ...e delay determines the time that elapses after a trigger event before pulse modulation starts The pulse delay is not effective for double pulse generation Parameters Delay float Range 0 to 100 s Increment 10 ns RST 10 ns Default unit ns Example PULM DEL 13 us 13 us elapse after a trigger before the first pulse is generated Options R S SMBV K23 Pulse Generator SOURce hw PULM DOUBle DELay Delay The ...

Страница 703: ...pulse generation Parameters Width float Range 10 ns to 100 s Increment 10 ns RST 3 us Default unit ns Example PULM DOUB WIDT 33 us sets a width of 33 us for the second pulse Options R S SMBV K23 Pulse Generator SOURce hw PULM MODE Mode Sets the mode of the pulse generator Parameters Mode SINGle DOUBle SINGle Enables single pulse generation DOUBle Enables double pulse generation The two pulses are ...

Страница 704: ...of the generated pulse The period determines the repe tition frequency of the internal signal Parameters Period float Range 40 ns to 100 s Increment 10 ns RST 10 us Example PULM PER 220 us the pulse period is 220 us Options R S SMBV K23 Pulse Generator SOURce hw PULM POLarity Polarity The command sets the polarity between modulating and modulated signal This com mand is only effective for an exter...

Страница 705: ...dulation source Example PULM STAT ON activates the pulse modulation Usage SCPI confirmed Options R S SMBV K22 Pulse Modulator SOURce hw PULM STATe State The command activates deactivates the pulse modulation Parameters State 0 1 OFF ON RST OFF Example PULM STAT ON activates pulse modulation with the modulation source selected under SOURce PULM SOURce Usage SCPI confirmed SOURce hw PULM TRIGger EXT...

Страница 706: ...PULSE EXT connector Parameters Slope POS NEG RST POSitive Example PULM TRIG EXT SLOP NEG The pulse generator is triggered on the negative slope of the external trigger signal Options R S SMBV K23 Pulse Generator SOURce hw PULM TRIGger MODE Mode The command selects the trigger mode for pulse modulation Parameters Mode AUTO EXTernal EGATe AUTO The pulse modulation is generated continuously EXTernal ...

Страница 707: ...internal reference frequency The commands of this subsystem are not affected by an instrument reset RST on page 436 SOURce ROSCillator EXTernal FREQuency 690 SOURce ROSCillator EXTernal RFOFf STATe 691 SOURce ROSCillator EXTernal SBANdwidth 691 SOURce ROSCillator INTernal ADJust VALue 691 SOURce ROSCillator INTernal ADJust STATe 692 SOURce ROSCillator SOURce 692 SOURce ROSCillator EXTernal FREQuen...

Страница 708: ...le ROSC EXT RFOF STAT ON In case of a missing external signal no RF signal is output SOURce ROSCillator EXTernal SBANdwidth SBandwidth The command selects the synchronization bandwidth for an external reference signal Parameters SBandwidth WIDE NARRow NARRow Synchronization bandwidth is approx 1 Hz WIDE Synchronization bandwidth is approx 750 Hz Example ROSC SOUR EXT selects the external source RO...

Страница 709: ...urce Parameters Source INTernal EXTernal INTernal The internal reference oscillator is used EXTernal An external reference signal is used It must be input at the REF IN connector at the rear of the instrument The instrument is informed of the frequency of the external refer ence signal by means of the command SOURce ROSCillator EXTernal FREQuency RST INTernal Example ROSC SOUR EXT selects the exte...

Страница 710: ...e cially with short dwell times SYSTem DISPlay UPDate OFF SOURce hw SWEep FREQuency DWELl 693 SOURce hw SWEep FREQuency EXECute 694 SOURce hw SWEep FREQuency MODE 694 SOURce hw SWEep FREQuency POINts 695 SOURce hw SWEep FREQuency SHAPe 696 SOURce hw SWEep FREQuency SPACing 696 SOURce hw SWEep FREQuency STEP LINear 697 SOURce hw SWEep FREQuency STEP LOGarithmic 698 SOURce hw SWEep POWer DATTenuator...

Страница 711: ... ms sets a dwell time of 12 ms for a frequency sweep at the RF output SOURce hw SWEep FREQuency EXECute The command triggers a sweep The command is only valid for sweep mode Single SOURce SWEep FREQuency MODE SINGle The command corresponds to the manual control command Execute Single Sweep Example SWE FREQ EXEC triggers a frequency sweep at the RF output Usage Event SOURce hw SWEep FREQuency MODE ...

Страница 712: ...ach trigger triggers one sweep step only Mode Single Step The frequency increases by the value entered under SOUR SWE FREQ STEP LIN linear spacing or STEP LOG logarithmic spacing RST AUTO Example SWE MODE AUTO selects Mode Auto for a frequency sweep at the RF output SOURce hw SWEep FREQuency POINts Points The command sets the number of steps in an RF sweep The command is linked to the command SWEe...

Страница 713: ...AWTooth TRIangle SAWTooth One sweep runs from start to stop frequency Each subsequent sweep starts at the start frequency i e the shape of the sweep sequence resembles a sawtooth TRIangle One sweep runs from start to stop frequency and back i e the shape of the sweep resembles a triangle Each subsequent sweep starts at the start frequency RST SAWTooth Example SOUR SWE SHAP TRI selects the sweep cy...

Страница 714: ...uency sweep at the RF out put SOURce hw SWEep FREQuency STEP LINear Linear The command sets the step width for linear sweeps This command is linked to the command SWEep FREQuency POINts as follows POINts SPAN STEP LIN 1 If STEP LIN changes the value of POINTs is adjusted The STARt and STOP value is retained The keywords FREQuency and LINear can be omitted see example The command is then SCPI compl...

Страница 715: ...s the value of POINTs is adjusted The STARt and STOP value is retained Parameters Logarithmic float Range 0 01 to 9999 Increment 0 01 PCT RST 1 PCT Example FREQ STAR 1GHz sets the start frequency to 1 GHz FREQ STOP 5GHz sets the stop frequency to 5 GHz SWE SPAC LOG sets logarithmic sweep spacing SWE STEP LOG 10PCT sets the step width for logarithmic sweep spacing to 10 of the previous frequency in...

Страница 716: ...riggered individually either by varying the Current Level value using the rotary knob under manual control or by means of a POW MAN command under remote control With manual control the level increases or decreases depending on the direction of the rotary encoder by the value specified under SOUR SWE POW STEP With remote control the level increases by the value specified under SWEep POW STEP which ...

Страница 717: ...ooth TRIangle SAWTooth One sweep runs from the start level to the stop level The subse quent sweep starts at the start level again i e the shape of sweep sequence resembles a sawtooth TRIangle One sweep runs from start to stop level and back i e the shape of the sweep resembles a triangle Each subsequent sweep starts at the start level again RST SAWTooth Example SOUR SWE POW SHAP TRI selects the s...

Страница 718: ...to 139 dB Increment 0 01 dB RST 1 Example SWE POW STEP 10dB sets the step width for logarithmic sweep spacing to 10 dB of the previous level in each instance for a level sweep SOURce hw SWEep RESet ALL The command resets all active sweeps to the starting point Example SWE RES resets all active sweeps to the starting point 7 15 STATus Subsystem This system contains the commands for the status repor...

Страница 719: ...s the Status Operation Condition register Usage Query only SCPI confirmed STATus OPERation ENABle Enable The command sets the bits of the ENABle part of the STATus OPERation register This setting determines which events of the Status Event part are forwarded to the sum bit in the status byte These events can be used for a service request Parameters Enable string Example STAT OPER ENAB 32767 all ev...

Страница 720: ...ATus OPERation register If a bit is set a transition from 0 to 1 in the condition part causes an entry to be made in the EVENt part of the register A new event in the hardware is thus registered e g the start of an adjustment Parameters Ptransition string Example STAT OPER PTR 32767 all transitions from 0 to 1 in the condition part of the Status Oper ation register cause an entry to be made in the...

Страница 721: ...ed for the sum bit in the status byte These events can be used for a service request Parameters Enable string Example STAT OPER ENAB 1 problems when performing an adjustment cause an entry to be made in the sum bit Usage SCPI confirmed STATus QUEStionable EVENt EVENt The command queries the content of the EVENt part of the STATus QUEStionable register This part contains information on the actions ...

Страница 722: ...us Ques tionable register cause an entry to be made in the EVENt part Usage SCPI confirmed STATus QUEue NEXT The command queries the oldest entry in the error queue and then deletes it Positive error numbers denote device specific errors and negative error numbers denote error messages defined by SCPI If the error queue is empty 0 No error is returned The command is identical to SYSTem ERRor Retur...

Страница 723: ...MMunicate SERial BAUD 710 SYSTem COMMunicate SERial PARity 711 SYSTem COMMunicate SERial SBITs 711 SYSTem COMMunicate SOCKet RESource 711 SYSTem DATE 711 SYSTem DISPlay UPDate 712 SYSTem DLOCk 712 SYSTem FILes TEMPorary DELete 712 SYSTem ERRor ALL 712 SYSTem ERRor CODE ALL 713 SYSTem ERRor CODE NEXT 713 SYSTem ERRor COUNt 714 SYSTem ERRor NEXT 714 SYSTem IDENtification 714 SYSTem IRESponse 715 SYS...

Страница 724: ... the terminator regardless of whether it is sent with or without EOI RST STANdard Example SYST COMM GPIB LTER EOI only a character which is sent simultaneously with the line mes sage EOI is accepted as the terminator SYSTem COMMunicate GPIB SELF ADDRess Address Sets the GPIB address Parameters Address integer Range 1 to 30 RST 28 Example SYST COMM GPIB ADDR 14 sets GPIB address SYSTem COMMunicate ...

Страница 725: ... ON activates the change of the hostname SYSTem COMMunicate NETWork COMMon WORKgroup Workgroup The command enters the individual workgroup name of the instrument Parameters Workgroup string Example SYST COMM NETW COMM WORK TEST_09 enters the workgroup name TEST_09 SYSTem COMMunicate NETWork IPADdress MODE Mode The command selects if the IP address is assigned automatically or manually The entry is...

Страница 726: ... sending command SYST COMM NETW IPAD SET Parameters Gateway string Range 0 0 0 0 to ff ff ff ff Example SYST COMM NETW GAT 1 2 3 4 enters the IP address of the default gateway SYST COMM NETW IPAD SET activates all changes of the IP address settings SYSTem COMMunicate NETWork IPADdress SUBNet MASK Mask The command enters the Subnet mask The entry is only activated after sending com mand SYST COMM N...

Страница 727: ...e string for remote control via the GPIB interface This string is used for remote control of the instrument To change the GPIB address use the command SYST COMM GPIB ADDR Return values Resource string Example SYST COMM GPIB RES queries the VISA resource string Response GPIB 28 INSTR Usage Query only SYSTem COMMunicate SERial RESource The command queries the visa resource string for the serial remo...

Страница 728: ...stop bits for the serial remote control interface Parameters Sbits 1 2 RST 1 Example SYST COMM SER SBIT 2 selects 2 stop bits SYSTem COMMunicate SOCKet RESource The command queries the visa resource string for remote control via the Socket interface Return values Resource string Example SYST COMM SOCK RES Usage Query only SYSTem DATE Date The command queries sets the date for the instrument intern...

Страница 729: ... Dlock 0 1 OFF ON RST 0 Example SYST DLOC ON activates the display lock The instrument cannot be operated via the display until it has been enabled with SYST DLOC OFF SYSTem FILes TEMPorary DELete The command deletes the temporary files from the directory var smbv unicod The content of this directory are temporary files such as the wavefiles wv of all ARB standards Deleting the temporary files mai...

Страница 730: ...t the entire error text Return values All string 0 No error i e the error queue is empty positive value Positive error numbers denote device specific errors negative value Negative error numbers denote error messages defined by SCPI Example SYST ERR CODE ALL queries all entries in the error queue Response 0 no errors have occurred since the error queue was last read out Usage Query only SYSTem ERR...

Страница 731: ... the oldest entry in the error queue and then deletes it The command is identical to the command STATus QUEue NEXT Return values Next string 0 No error i e the error queue is empty positive value Positive error numbers denote device specific errors negative value Negative error numbers denote error messages defined by SCPI Example SYST ERR queries the oldest entry in the error queue Response 0 no ...

Страница 732: ...ser defined SYST IDEN USER Note While working in a emulation mode the instrument s specific command set is dis abled i e the SCPI command SYST IRES will be discarded Parameters Iresponse string Example SYST IDEN USER selects an user defined identification SYST IRES Test Device defines the identification string test device IDN Response test device SYSTem KLOCk Klock This command Keyboard LOCk disab...

Страница 733: ...ment specific GPIB command set selection SYST LANG HPxxxx Setting parameters Language string Example SYST LANG Response SCPI The SCPI command set is used Usage Setting only SYSTem ORESponse Oresponse The command defines the OPT string for selection user defined SYST IDEN USER Note While working in a emulation mode the instrument s specific command set is dis abled i e the SCPI command SYST ORES wi...

Страница 734: ...rors existing at the time when the query is started This list corresponds to the display on the info page under manual control Return values Serror string Example SYST SERR queries all errors existing in the error queue Example Response 221 Settings conflict 153 Input voltage out of range The two returned errors have occurred since the error queue was last queried Usage Query only SYSTem STARtup C...

Страница 735: ... the hardware assemblies TEST DIRect The self tests return a 0 if the test is performed successfully otherwise a value other than 0 is returned None of the commands of this system have an RST value Improper use may destroy the assembly The respective hardware assembly responds directly to the TEST DIRect command any safety mechanisms are bypassed The command is used for servicing purposes and shou...

Страница 736: ...m The TRIGger system contains the commands for selecting the trigger source for the RF and LF sweep The trigger input connectors are configured in the SOURce INPut sub system The trigger system of the R S SMBV is a simplified implementation of the SCPI trigger system The TRIGger system differs from the SCPI system as follows No INITiate command the instrument behaves as if INITiate CONTinuous ON w...

Страница 737: ...ger hw PSWeep SOURce 723 TRIGger hw SWEep IMMediate 723 TRIGger hw SWEep SOURce 724 TRIGger0 SWEep SOURce Source TRIGger hw LFFSweep SOURce Source The command sets the trigger source for the LF sweep The trigger is triggered by the command SOURce LFOutput SWEep FREQuency EXECute The names of the parameters correspond directly to the various settings under manual control SCPI uses other names for t...

Страница 738: ...eep is started A second trigger event stops the sweep at the current frequency a third trigger event starts the trigger at the start frequency and so on RST SINGle Example TRIG LFFS SOUR EXT selects triggering with an external trigger TRIGger hw FSWeep IMMediate The command immediately starts an RF frequency sweep cycle The command is only effective for sweep mode Single SOUR SWE FREQ MODE AUTO in...

Страница 739: ...O SOURce SWEep FREQuency MODE AUTO EXTernal The sweep is triggered externally via the INST TRIG connector EAUTo The sweep is triggered externally via the INST TRIG connector As soon as one sweep is finished the next sweep is started A second trigger event stops the sweep at the current frequency a third trigger event starts the trigger at the start frequency and so on RST SINGle Example TRIG FSW S...

Страница 740: ...ommands SOURce hw SWEep POWer EXECute TRIGger hw PSWeep IMMediate or TRG The mode has to be set to AUTO SOURce SWEep LEVel MODE AUTO EXTernal The sweep is triggered externally via the INST TRIG connector EAUTo The sweep is triggered externally via the INST TRIG connector As soon as one sweep is finished the next sweep is started A second trigger event stops the sweep at the current frequency a thi...

Страница 741: ...e complete sweep cycle is triggered by the GPIB com mands SOURce SWEep POWer FREQuency EXEC TRIGger PSWeep FSWeep IMMediate or TRG If SOURce SWEep POWer MODE is set to STEP one step is exe cuted The mode has to be set to AUTO EXTernal The sweep is triggered externally via the INST TRIG connector EAUTo The sweep is triggered externally via the INST TRIG connector As soon as one sweep is finished th...

Страница 742: ...it and the display Parameters Angle DEGree DEGRee RADian RST RADian Example UNIT ANGL DEG sets default unit DEG for all commands which determine angle values UNIT POWer Power The command defines the default unit for power It is valid for all commands which deter mine power values It does not influence the manual control parameter unit and the dis play Parameters Power V DBUV DBM RST DBM Example UN...

Страница 743: ...s when exchanging modules or ordering spares The order no for spare parts is included in the service man ual The service manual includes further information particularly on troubleshooting repair exchange of modules and alignment The address of our support center and a list of all Rohde Schwarz service centers can be found at the beginning of this manual 8 1 Storing and Packing The storage tempera...

Страница 744: ...ation gives the user an overview of the main operating states and settings of the instru ment The states are indicated for information only and do not necessitate any action by the user Status information is displayed between the frequency and level fields at the left of the info line or in the info line itself 9 1 1 Status information displayed between the frequency and level fields This chapter ...

Страница 745: ...evel at the output of the downstream instrument This allows the target level at the output of downstream instruments to be entered The signal generator changes the RF output level according to the set offset However the level entered and displayed in the Level dialog of the RF function block always corresponds to the RF output level Any level offset is not taken into consideration The correlation ...

Страница 746: ...O The instrument can be switched to manual operation by means of remote control only e g with the Visual Basic command CALL IBLOC generator SYS CTRL Indicates that the instrument is controlling another instrument 9 1 3 Status information displayed in the Info line This chapter gives an overview of the status messages displayed in the Info line RFSweep LevelSweep LFSweep The indicated sweep is enab...

Страница 747: ...displayed in the info line in different colors depending on their importance and display duration Errors e g no calibration data are displayed in red information e g file not found and warnings in black Warn ings indicate less significant errors e g the instrument operates outside specified data 9 2 1 Volatile messages Volatile messages report automatic settings in the instrument e g switching off...

Страница 748: ... specific error messages set bit 3 in the ESR register The index provides a list of the error messages sorted according to their error codes Error Code Error Description Remedy 50 Extern reference out of range or disconnected External reference is selected but no external signal is applied or the signal is out of range Check the selected refer ence signal source internal or external in the Setup R...

Страница 749: ...zation failed Initialization of a driver fails when boot ing the instrument firmware The driver is not compatible with the hardware or software configu ration of the instrument 241 No current list There is no list selected To execute the required operation a list has to be selected in the related menu If no list is available a new list must be created 242 Unknown list type specified The list type ...

Страница 750: ...es is wv It is not possible to enter another file extension when storing a list 465 File contains invalid data The selected file contains data that is not valid for the file type The file extension determines the data that is valid for this file type If the file extension is changed the lists are no longer recognized and the data are therefore invalid Example the extension of a waveform file wv wa...

Страница 751: ... interface Bus lines Data bus with 8 lines D0 to D7 The transmission is bit parallel and byte serial in the ASCII ISO code D0 is the least significant bit D7 the most significant bit Control bus with five lines IFC Interface Clear active LOW resets the interfaces of the instruments connected to the default setting ATN Attention active LOW signals the transmission of interface messages inactive HIG...

Страница 752: ...ich can be controlled via GPIB bus can be equipped with different interface functions The interface function for the R S SMBV are listed in the following table Table 1 1 GPIB bus interface functions Control character Interface function SH1 Handshake source function source handshake full capability AH1 Handshake sink function acceptor handshake full capability L4 Listener function full capability d...

Страница 753: ...odulator LOCal 457 CALibration hw LEVel ALCTable MEASure 458 CALibration hw LEVel EXTern DATA 458 CALibration hw LEVel STATe 459 CALibration hw LEVel MEASure 458 CLOCk INPut FREQuency 459 CLOCk INPut SLOPe 459 DEVice PRESet 438 DIAGnostic INFO OTIMe 461 DIAGnostic INFO POCount 461 DIAGnostic hw BGINfo 460 DIAGnostic hw BGINfo CATalog 460 DISPlay ANNotation AMPLitude 461 DISPlay ANNotation FREQuenc...

Страница 754: ...TO FILE PREFix STATe 470 HCOPy FILE NAME AUTO FILE YEAR 470 HCOPy FILE NAME AUTO FILE YEAR STATe 470 HCOPy IMAGe FORMat 471 HCOPy IMAGe SIZE 471 HCOPy EXECute 466 INITiate ch POWer CONTinuous 486 KBOard LANGuage 472 KBOard LAYout 472 MMEMory CATalog 477 MMEMory CATalog LENGth 478 MMEMory CDIRectory 478 MMEMory COPY 478 MMEMory DATA 479 MMEMory DCATalog 480 MMEMory DCATalog LENGth 480 MMEMory DELet...

Страница 755: ...unicate SERial PARity 711 SYSTem COMMunicate SERial RESource 710 SYSTem COMMunicate SERial SBITs 711 SYSTem COMMunicate SOCKet RESource 711 SYSTem COMMunicate USB RESource 710 SYSTem DATE 711 SYSTem DISPlay UPDate 712 SYSTem DLOCk 712 SYSTem FILes TEMPorary DELete 712 SYSTem FPReset 438 SYSTem IDENtification 714 SYSTem IRESponse 715 SYSTem KLOCk 715 SYSTem LANGuage 715 SYSTem ORESponse 716 SYSTem ...

Страница 756: ...on ENABle 702 STATus OPERation NTRansition 703 STATus OPERation PTRansition 703 STATus OPERation EVENt 702 STATus PRESet 703 STATus QUEStionable CONDition 704 STATus QUEStionable ENABle 704 STATus QUEStionable NTRansition 704 STATus QUEStionable PTRansition 705 STATus QUEStionable EVENt 704 STATus QUEue NEXT 705 SYSTem ERRor ALL 712 SYSTem ERRor CODE ALL 713 SYSTem ERRor CODE NEXT 713 SYSTem ERRor...

Страница 757: ... FILE 524 SOURce hw BB ARB MCARrier CARRier ch FREQuency 524 SOURce hw BB ARB MCARrier CARRier ch PHASe 525 SOURce hw BB ARB MCARrier CARRier ch POWer 525 SOURce hw BB ARB MCARrier CARRier ch STATe 525 SOURce hw BB ARB MCARrier CFACtor MODE 525 SOURce hw BB ARB MCARrier CLIPping CFACtor 526 SOURce hw BB ARB MCARrier CLIPping CUToff 526 SOURce hw BB ARB MCARrier CLIPping STATe 527 SOURce hw BB ARB ...

Страница 758: ... ch PULSe DIVider 517 SOURce hw BB ARB TRIGger OUTPut ch PULSe FREQuency 517 SOURce hw BB ARB TRIGger RMODe 511 SOURce hw BB ARB TRIGger SLENgth 512 SOURce hw BB ARB TRIGger SLUNit 512 SOURce hw BB ARB TRIGger SMODe 513 SOURce hw BB ARB TRIGger SOURce 513 SOURce hw BB ARB TRIGger EXTernal 1 2 DELay 514 SOURce hw BB ARB TRIGger EXTernal 1 2 INHibit 514 SOURce hw BB ARB TSIGnal CIQ CREate 518 SOURce...

Страница 759: ...hw BB ARB WSEGment CONFigure SEGMent CATalog 545 SOURce hw BB ARB WSEGment CONFigure SELect 545 SOURce hw BB ARB WSEGment CREate 546 SOURce hw BB ARB WSEGment NAME 546 SOURce hw BB ARB WSEGment NEXT 546 SOURce hw BB ARB WSEGment NEXT EXECute 547 SOURce hw BB ARB WSEGment NEXT SOURce 547 SOURce hw BB ARB WSEGment SEQuence APPend 548 SOURce hw BB ARB WSEGment SEQuence SELect 548 SOURce hw BB ARB TRI...

Страница 760: ...ter SPHase 564 SOURce hw BB DM FILTer TYPE 565 SOURce hw BB DM FLISt CATalog 573 SOURce hw BB DM FLISt DELete 579 SOURce hw BB DM FLISt FREE 573 SOURce hw BB DM FLISt POINts 579 SOURce hw BB DM FLISt SELect 579 SOURce hw BB DM FORMat 567 SOURce hw BB DM FSK DEViation 568 SOURce hw BB DM FSK VARiable SYMBol ch DEViation 568 SOURce hw BB DM FSK VARiable TYPE 568 SOURce hw BB DM MDELay 569 SOURce hw ...

Страница 761: ...OUTPut ch OFFTime 561 SOURce hw BB DM TRIGger OUTPut ch ONTime 561 SOURce hw BB DM TRIGger OUTPut ch PATTern 562 SOURce hw BB DM TRIGger OUTPut ch PULSe DIVider 562 SOURce hw BB DM TRIGger OUTPut ch PULSe FREQuency 562 SOURce hw BB DM TRIGger RMODe 557 SOURce hw BB DM TRIGger SLENgth 558 SOURce hw BB DM TRIGger SOURce 558 SOURce hw BB DM TRIGger EXTernal ch DELay 559 SOURce hw BB DM TRIGger EXTern...

Страница 762: ... SOURce hw BB MCCW EDIT CARRier STATe 598 SOURce hw BB MCCW EDIT CARRier STOP 598 SOURce hw BB MCCW PRESet 590 SOURce hw BB MCCW STATe 590 SOURce hw BB MCCW TRIGger ARM EXECute 599 SOURce hw BB MCCW TRIGger EXECute 599 SOURce hw BB MCCW TRIGger EXTernal SYNChronize OUTPut 600 SOURce hw BB MCCW TRIGger OBASeband DELay 600 SOURce hw BB MCCW TRIGger OBASeband INHibit 600 SOURce hw BB MCCW TRIGger OUT...

Страница 763: ...Rection DEXChange MODE 621 SOURce hw CORRection DEXChange SELect 622 SOURce hw CORRection VALue 623 SOURce hw CORRection STATe 623 SOURce hw FM EXTernal COUPling 624 SOURce hw FM MODE 624 SOURce hw FM SENSitivity 625 SOURce hw FM SOURce 625 SOURce hw FM STATe 626 SOURce hw FM DEViation 624 SOURce hw FREQuency CENTer 627 SOURce hw FREQuency LOSCillator MODE 627 SOURce hw FREQuency LOSCillator OUTPu...

Страница 764: ...OURce 639 SOURce hw IQ STATe 639 SOURce hw IQ SWAP STATe 640 SOURce hw IQ WBSTate 640 SOURce hw LIST CATalog 657 SOURce hw LIST DELete 658 SOURce hw LIST DELete ALL 658 SOURce hw LIST DEXChange AFILe CATalog 659 SOURce hw LIST DEXChange AFILe EXTension 659 SOURce hw LIST DEXChange AFILe SELect 660 SOURce hw LIST DEXChange AFILe SEParator COLumn 660 SOURce hw LIST DEXChange AFILe SEParator DECimal ...

Страница 765: ... SPC PEAK 682 SOURce hw POWer SPC SELect 682 SOURce hw POWer SPC STATe 682 SOURce hw POWer SPC TARGet 682 SOURce hw POWer STARt 683 SOURce hw POWer STEP MODE 683 SOURce hw POWer STEP INCRement 683 SOURce hw POWer STOP 684 SOURce hw POWer LEVel IMMediate OFFSet 677 SOURce hw POWer LEVel IMMediate RCL 677 SOURce hw POWer LEVel IMMediate AMPLitude 676 SOURce hw PULM DELay 685 SOURce hw PULM DOUBle DE...

Страница 766: ...2 SOURce BBIN OLOad HOLD RESet 612 SOURce BBIN OLOad HOLD STATe 613 SOURce BBIN OLOad STATe 613 SOURce BBIN POWer PEAK 613 SOURce BBIN POWer RMS 614 SOURce BBIN SRATe ACTual 614 SOURce BBIN STATe 615 SOURce CORRection CSET CATalog 616 SOURce CORRection CSET DELete 618 SOURce INPut CLOCk IMPedance 634 SOURce INPut DELay ADCState 636 SOURce INPut DELay CLENgth ch 637 SOURce INPut DELay SPOSition 636...

Страница 767: ...equency 441 COMMENT string 442 CONTROL LENGTH ControlLength 443 CONTROL LIST WIDTH4 Length m0m1 mx mM 1 450 COPYRIGHT string 442 DATA BITLENGTH BitLength 442 DATA LIST Length d0d1 dx dN 1 443 DATE yyyy mm dd hh mm ss 443 LEVEL OFFS RMSOffset_dB PeakOffset_dB 443 MWV_SEGMENT_CLOCK ClockSeg0 ClockSeg1 ClockSegN 1 449 MWV_SEGMENT_CLOCK_MODE Mode 448 MWV_SEGMENT_COUNT NumOfSeg 447 MWV_SEGMENT_FILES Fi...

Страница 768: ...1 Adjustment value Reference frequency 161 691 Adjust Synthesis 106 457 Adjust Synthesis Extension 106 ALC automatic level control 178 674 ALC Auto 729 ALC On 178 729 ALC S H 729 ALC Table 729 AM Depth 192 494 AM External Coupling 192 494 AM Frequency 648 Amplitude of test signal 347 AM Sensitivity 192 495 AM Source 191 495 AM State 191 495 Analog Wideband I Q In 238 639 Angle Alpha 300 Annotate a...

Страница 769: ... 152 Center Freq 214 627 Change Password Setup 129 130 Channel x 341 Check Front Panel 117 Clear status remote 433 Clipping 363 Clock Frequency 329 506 Clock input slope 459 Clock Input Slope 122 Clock Mode 344 384 506 608 Clock Mode DM 322 552 Clock Multiplier 344 384 507 553 608 Clock Multiplier DM 322 Clock Parameter 343 Clock rate 329 351 528 Clock rate mode 351 541 Clock Reference 276 Clock S...

Страница 770: ...5 573 Data pattern 549 Data pattern DM 296 Data Source 550 Data Source DM 296 Data Valid 734 Date Setup 118 DAV 734 Day Hardcopy File Name 468 469 DCL 399 Deactivated Licenses 114 Deactivate RF output 160 691 Decimal Point Import Export List Mode data 661 Decimal Point Import Export List Mode data 233 Decimal Point Import Export User Correction data 185 621 DEF 417 Default instrument settings 34 1...

Страница 771: ...ailed 180 731 Cannot access hardware 200 732 Cannot access the EEPROM 202 732 Cannot open file 460 732 Cannot read file 462 732 Cannot write file 461 732 Driver initialization failed 204 732 Extern reference out of range or disconnected 50 731 File contains invalid data 465 733 Filename missing 463 732 Hardware revision out of date 201 732 Invalid EEPROM data 203 732 Invalid filename extension 464...

Страница 772: ... Frequency Test Signal 520 Frequency Test Signal ARB 345 Front panel key emulation 99 FSK Deviation 568 FSK Deviation DM 300 FSK Type Variable FSK 568 FSK Type Variable FSK DM 302 Full Range 107 457 Fuses 32 G Gain 525 Gain Start 366 Gain Step 366 Gated pulse trigger input 208 Gated Signal Pulse Modulation 204 689 Gate Input Polarity 208 Pulse Modulation 688 Gateway Setup 120 707 709 Generate Sign...

Страница 773: ...3 396 Interfaces GPIB 398 USB 397 Internal Baseband I Q In 238 639 Interrupt 429 IP address 394 Changing 40 IP Address Mode 708 IP Address Mode Setup 120 IP Address Setup 120 709 IST 425 IST flag 428 remote 434 I Value Test Signal ARB 348 K Key Arrow key 24 BACKSPACE 23 CLOSE 22 Cursor key 24 DIAGRAM 21 ENTER 23 ESC 21 FILE 21 138 FREQ 21 HCOPY 19 HELP 19 HIDE 22 INFO 19 INSERT 23 LEVEL 21 LOCAL 1...

Страница 774: ...signals 282 Marker Pattern 517 Marker Positions DM 311 Marker x Delay 342 382 MAX 417 Maximal deviation 198 FM 195 624 PhiM 671 MCCW Actual Crest Factor 594 Measured External Clock 322 344 384 Measured level NRP Z level control 171 Measurement Period 388 Measurement Period Baseband Input 612 Menu structure access denied 74 header 74 menu area 74 Messages commands 393 instrument 393 instrument resp...

Страница 775: ...h 90 Operating concept 50 Operating system 37 Operation complete remote 435 Operation hours 107 461 Optimization mode 257 Optimize Crest Factor 362 525 Optimize Crest Factor MCCW 373 595 Optimize I Q Signals for RF Output 266 640 Optimize internal I Q Impairments for RF Output 257 588 Option ARB Baseband Generator 323 Baseband Generator ARB only B50 B51 271 Baseband Generator B10 271 Hardware 108 ...

Страница 776: ...Delay 204 685 Pulse Divider Marker 341 517 607 Pulse Divider Marker DM 319 562 Pulse External Impedance 208 Pulse Frequency Marker 341 517 562 607 Pulse Frequency Marker DM 319 Pulse generator 203 Signal valid as pulse sync 208 686 Pulse generator state 203 669 Pulse Mode 203 686 Pulse modulation 199 repetition frequency 204 648 687 Signal valid as pulse sync 208 686 Pulse period 204 687 Pulse tri...

Страница 777: ... 387 Sample Rate Value Digital I Q Output Settings 269 Samples 351 Samples per Period 346 Samples per Period Test Signal 521 Samples per Period Test Signal ARB 345 Save Recall 361 Save As DM 312 Save DM 308 312 Save immediate 139 Save instrument settings 139 436 482 Save intermediate 436 Save List 353 Save Sequencing List 358 SCPI Parameters 416 Syntax 413 Version 392 SCPI compliant commands 393 S...

Страница 778: ...edance LF output 202 655 Source Import Export List Mode data 662 User Correction data 186 Source Import Export User Correction data 622 Source Power Ramp Control 571 Source Power Ramp Control DM 313 Source Power Sensors 491 Source Reference Oscillator 160 Spacing Level Sweep 220 700 LF Sweep 653 RF Sweep 696 Spacing LF Sweep 225 Spacing RF Sweep 214 Span RF sweep 214 631 SPD 399 SPE 399 Special ch...

Страница 779: ...723 use digital attenuation 220 698 Sweep Center frequency 214 Sweep LF start frequency 225 Sweep LF stop frequency 225 Sweep shape LF Sweep 653 RF Level Sweep 220 700 RF Sweep 696 Sweep shape LF Frequency Sweep 225 Sweep shape RF Sweep 214 Sweep spacing Level Sweep 220 700 RF Sweep 696 Sweep spacing RF Sweep 214 Sweep Trigger 224 Symbol Clock Multiplier 553 Symbol Clock Multiplier DM 322 Symbol R...

Страница 780: ...a 459 Use peak power NRP Z level control 172 NRP Z power control 682 User Clock 352 541 User Correction 181 User Correction Data 182 617 User Filter 579 User Filter Catalog DM 304 573 User Filter Delete DM 304 579 User Filter Free Memory 573 User Filter List Length DM 579 User Mapping Catalog DM 300 User Mapping Delete DM 300 User mapping Free Memory 573 User mapping Lists Catalog 573 User Mapping...

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