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Rohde & Schwarz FSW Series User Manual Download Page 163

Measurement Example: Demodulating an FM Signal

R&S

®

FSW-K7

163

User Manual 1173.9240.02 ─ 17

9 Measurement Example: Demodulating an

FM Signal

A practical example for a basic Analog Demodulation measurement is provided here. It
demonstrates how operating and measurement errors can be avoided using correct
configuration settings.

The measurement is performed using the following devices:

●

An R&S

 

FSW with application firmware R&S

 

FSW-K7: Analog Demodulation

●

A vector signal generator, e.g. R&S SMU

Signal 

Generator

R&S FSW

Fig. 9-1: Test setup

Signal generator settings (e.g. R&S SMU):

Frequency:

500 MHz

Level:

-10 dBm

Modulation:

FM

Modulation frequency:

10 kHz

Frequency deviation:

50 kHz

Procedure:

1. Preset the R&S

 

FSW.

2. Set the center frequency to 

500

 

MHz

.

3. Set the reference level to 

0

 

dBm

.

4. Select the MODE key and then the "Analog Demod" button.

By default, the FM Time Domain result display and a Result Summary are shown.

 

Summary of Contents for FSW Series

Page 1: ...R S FSW K7 Analog Demodulation Measurement Option User Manual User Manual êX2 1173 9240 02 17 Test Measurement ...

Page 2: ...Source Acknowledgement on the user documentation CD ROM included in delivery Rohde Schwarz would like to thank the open source community for their valuable contribution to embedded computing 2014 Rohde Schwarz GmbH Co KG Mühldorfstr 15 81671 München Germany Phone 49 89 41 29 0 Fax 49 89 41 29 12 164 E mail info rohde schwarz com Internet www rohde schwarz com Subject to change Data without toleran...

Page 3: ...2 Demodulation Bandwidth 28 4 3 Sample Rate Measurement Time and Trigger Offset 29 4 4 AF Triggers 31 4 5 AF Filters 32 4 6 Time Domain Zoom 32 4 7 Receiving Data Input and Providing Data Output 34 4 8 Analog Demodulation in MSRA MSRT Operating Mode 48 5 Configuration 50 5 1 Default Settings for Analog Demodulation 50 5 2 Configuration According to Digital Standards 51 5 3 Configuration Overview 5...

Page 4: ...ppli cation 161 9 Measurement Example Demodulating an FM Signal 163 10 Optimizing and Troubleshooting the Measurement 169 11 Remote Commands for Analog Demodulation Measurements 170 11 1 Introduction 171 11 2 Common Suffixes 175 11 3 Activating Analog Demodulation Measurements 176 11 4 Configuring the Measurement 180 11 5 Capturing Data and Performing Sweeps 277 11 6 Configuring the Result Display...

Page 5: ...Contents R S FSW K7 5 User Manual 1173 9240 02 17 Index 361 ...

Page 6: ...Contents R S FSW K7 6 User Manual 1173 9240 02 17 ...

Page 7: ...and I Q Data Import and Export Description of general functions to import and export raw I Q measurement data How to Perform Measurements in the Analog Demodulation Application The basic procedure to perform each measurement and step by step instructions for more complex tasks or alternative methods Measurement Examples Detailed measurement examples to guide you through typical measurement sce nar...

Page 8: ...d with the instrument in printed form and in PDF format on the CD It provides the information needed to set up and start working with the instrument Basic operations and handling are described Safety information is also included The Getting Started manual in various languages is also available for download from the Rohde Schwarz website on the R S FSW product page at http www2 rohde schwarz com pr...

Page 9: ... func tions eliminated problems and last minute changes to the documentation The corre sponding firmware version is indicated on the title page of the release notes The most recent release notes are also available for download from the Rohde Schwarz website on the R S FSW product page at http www2 rohde schwarz com product FSW html Downloads Firmware 1 3 Conventions Used in the Documentation 1 3 1...

Page 10: ...d Any elements that can be activated by touching can also be clicked using an additionally connected mouse The alternative procedure using the keys on the instrument or the on screen keyboard is only described if it deviates from the standard operating procedures The term select may refer to any of the described methods i e using a finger on the touchscreen a mouse pointer in the display or a key ...

Page 11: ...g maximum minimum and average or current values in parallel over a selected number of measurements Maximum accuracy and temperature stability due to sampling digitization already at the IF and digital down conversion to the baseband I Q Error free AM to FM conversion and vice versa without deviation errors frequency response or frequency drift at DC coupling This user manual contains a description...

Page 12: ...lication The number of channels that can be configured at the same time depends on the avail able memory on the instrument Only one measurement can be performed at any time namely the one in the currently active channel However in order to perform the configured measurements consecu tively a Sequencer function is provided If activated the measurements configured in the currently active channels ar...

Page 13: ... channel tabs indicates that you are in MSRA MSRT operating mode For details on the MSRA operating mode see the R S FSW MSRA User Manual For details on the MSRT operating mode see the R S FSW Realtime Spectrum Applica tion and MSRT Operating Mode User Manual Channel bar information In the Analog Demodulation application the R S FSW shows the following settings Table 2 1 Information displayed in th...

Page 14: ...pend ing on the evaluation RF Spectrum CF Center frequency of input signal Sweep points Span measured span RF Time domain CF Center frequency of input signal Sweep points Time per division AF Spectrum AF CF center fre quency of demodula ted signal Sweep points AF Span evaluated span AF Time domain CF Center frequency of input signal Sweep points Time per division For most modes the number of sweep...

Page 15: ...tion All evaluations are based on the I Q data set acquired during the measurement The spectrum of the modulated signal to be evaluated is determined by the demodulation bandwidth However it can be restricted to a limited span AF Span if only part of the signal is of interest Furthermore the time base for evaluations in the time domain can be restricted to analyze a smaller extract in more detail ...

Page 16: ...esult Displays R S FSW K7 16 User Manual 1173 9240 02 17 Remote command LAY ADD 1 RIGH XTIM AM REL See LAYout ADD WINDow on page 284 FM Time Domain Displays the frequency spectrum of the demodulated FM signal versus time ...

Page 17: ...ult Displays R S FSW K7 17 User Manual 1173 9240 02 17 Remote command LAY ADD 1 RIGH XTIM FM See LAYout ADD WINDow on page 284 PM Time Domain Displays the phase deviations of the demodulated PM signal in rad or versus time ...

Page 18: ...3 9240 02 17 Remote command LAY ADD 1 RIGH XTIM PM See LAYout ADD WINDow on page 284 AM Spectrum Displays the modulation depth of the demodulated AM signal in or dB versus AF span The spectrum is calculated from the demodulated AM signal in the time domain via FFT ...

Page 19: ... Remote command LAY ADD 1 RIGH XTIMe AM REL AFSPectrum1 see LAYout ADD WINDow on page 284 FM Spectrum Displays the frequency deviations of the demodulated FM signal in Hz or dB versus AF span The spectrum is calculated from the demodulated AM signal in the time domain via FFT ...

Page 20: ... 17 Remote command LAY ADD 1 RIGH XTIMe FM AFSPectrum1 see LAYout ADD WINDow on page 284 PM Spectrum Displays the phase deviations of the demodulated PM signal in rad or dB versus AF span The spectrum is calculated from the demodulated AM signal in the time domain via FFT ...

Page 21: ...21 User Manual 1173 9240 02 17 Remote command LAY ADD 1 RIGH XTIMe PM AFSPectrum1 see LAYout ADD WINDow on page 284 RF Time Domain Displays the RF power of the input signal versus time The level values represent the magnitude of the I Q data set ...

Page 22: ... 1173 9240 02 17 Remote command LAY ADD 1 RIGH XTIM AM see LAYout ADD WINDow on page 284 RF Spectrum Displays the spectrum of the input signal In contrast to the Spectrum application the frequency values are determined using FFT from the recorded I Q data set ...

Page 23: ... The result summary displays the results of the demodulation functions for all windows in a table For each demodulation the following information is provided Table 3 1 Result summary description Label Description Peak Positive peak maximum Peak Negative peak minimum Peak 2 Average of positive and negative peaks RMS Root Mean Square value Mod Freq Modulation frequency ...

Page 24: ... 1 2 2 2 log 20 i i i i U U dB THD In addition the following general information for the input signal is provided Carrier Power the power of the carrier without modulation Carrier Offset the deviation of the calculated carrier frequency to the ideal carrier frequency Modulation Depth AM or RF Time Domain only the difference in amplitude the carrier signal is modulated with Remote command LAY ADD 1...

Page 25: ...s the sort order In addition the detected peaks can be indicated in the diagram The peak list can also be exported to a file for analysis in an external application You can define search and sort criteria to influence the results of the analysis see chapter 6 4 1 Marker Search Settings on page 139 Remote command LAY ADD 1 RIGH PEAK see LAYout ADD WINDow on page 284 Results CALCulate n MARKer m X o...

Page 26: ...nput and Providing Data Output 34 Analog Demodulation in MSRA MSRT Operating Mode 48 4 1 Demodulation Process Circuit Description The software demodulator runs on the main processor of the analyzer The demodula tion process is shown in figure 4 1 All calculations are performed simultaneously with the same I Q data set Magnitude amplitude and phase of the complex I Q pairs are determined The freque...

Page 27: ...Measurement Basics R S FSW K7 27 User Manual 1173 9240 02 17 Fig 4 1 Block diagram of software demodulator Demodulation Process Circuit Description ...

Page 28: ...emodulation bandwidth determines the span of the signal that is demodulated It is not the 3 dB bandwidth of the filter but the useful bandwidth which is distortion free with regard to phase and amplitude Therefore the following formulas apply AM demodulation bandwidth 2 x modulation frequency FM demodulation bandwidth 2 x frequency deviation modulation frequency PM demodulation bandwidth 2 x modul...

Page 29: ... demodulation filter Demod band width Sample rate Measurement time Trigger offset Min Max Min Max 500 MHz6 600 MHz 1 66 ns 40 ms 40 ms 0 3495 s 320 MHz5 400 MHz 2 5 ns 60 ms 60 ms 0 5243 s 160 MHz4 200 MHz 5 ns 120 ms 120 ms 1 0486 s 80 MHz3 128 MHz 7 8125 ns 187 5 ms 187 5 ms 1 6384 s 40 MHz2 64 MHz 15 625 ns 375 ms 375 ms 3 2768 s 28 MHz1 64 MHz 15 625 ns 375 ms 375 ms 3 2768 s 18 MHz 32 MHz 31 ...

Page 30: ...th Sample rate Measurement time Trigger offset Min Max Min Max 160 MHz 5 640 MHz 1 5625 ns 37 5 ms 37 5 ms 0 32768 s 80 MHz 4 320 MHz 3 125 ns 75 ms 75 ms 0 65536 s 40 MHz 4 160 MHz 6 25 ns 150 ms 150 ms 1 310719993 s 28 MHz 2 112 MHz 8 929 ns 214 286 ms 214 286 ms 1 872457134 s 18 MHz 2 72 MHz 13 88 ns 333 333 ms 333 333 ms 2 912711097 s 10 MHz 40 MHz 25 ns 600 ms 600 ms 5 242879975 s 8 MHz 32 MH...

Page 31: ... 1 6 million samples However when 480 001 samples are exceeded all traces that are not currently being displayed in a win dow are deactivated to improve performance The traces can only be activated again when the samples are reduced Effects of measurement time on the stability of measurement results Despite amplitude and frequency modulation the display of carrier power and carrier frequency offse...

Page 32: ...f human hearing 4 6 Time Domain Zoom For evaluations in the time domain the demodulated data for a particular time span can be extracted and displayed in more detail using the Time Domain Zoom function This is useful if the measurement time is very large and thus each sweep point repre sents a large time span The time domain zoom function distributes the available sweep points only amoung the time...

Page 33: ...t only the diagram display but the entire evalua tion for the current window In contrast to the time domain zoom the graphical zoom is available for all diagram evaluations However the graphical zoom is useful only if more measured values than trace points are available The time span represented by each measurement point remains the same Time Domain Zoom ...

Page 34: ...he level at the RF input connector and then close the message box Then measurement is possible again Reactivating the RF input is also possible via the remote command INPut ATTenuation PROTection RESet 4 7 2 RF Input from the Analog Baseband Connector RF input can not only be taken from the RF INPUT connector on the front panel of the R S FSW If the optional Analog Baseband Interface R S FSW B71 i...

Page 35: ...when you plug them into the upper BASEBAND INPUT connectors on the front panel of the R S FSW The detected information on the probe is displayed in the Probes tab of the Input dialog box individually for each connector Single ended and differential probes Both single ended and differential probes are supported as input however since only one connector is occupied by a probe the Input Configuration...

Page 36: ...available for the full scale level A fixed impedance of 50 Ω is used for all probes to convert voltage values to power levels 4 7 4 Basics on External Generator Control Some background knowledge on basic terms and principles used for external genera tor control is provided here for a better understanding of the required configuration set tings External generator control is only available in the Sp...

Page 37: ...43 In figure 4 4 the TTL connection is illustrated using an SMU generator for example Fig 4 4 TTL connection for an SMU generator The external generator can be used to calibrate the data source by performing either transmission or reflection measurements Transmission Measurement This measurement yields the transmission characteristics of a two port network The external generator is used as a signa...

Page 38: ... connect the reference output of the generator with the reference input of the R S FSW and that you enable usage of the external reference on the R S FSW via SETUP Reference External Refer ence For more information on external references see the Instrument Setup section in the R S FSW User Manual Connection errors If no external generator is connected if the connection address is not correct or th...

Page 39: ...SMR40B11 3 X SMC100A1 SMR50 X SMC100A3 SMR50B11 3 X SME02 X SMR60 X SME03 X SMR60B11 3 X SME06 X SMT02 SMF100A X SMT03 SMF22 X SMT06 SMF22B2 X SMU02 X SMF43 X SMU02B31 2 X SMF43B2 X SMU03 2 X SMG SMU03B31 2 X SMGL SMU04 2 X SMGU SMU04B31 2 X SMH SMU06 2 X SMHU SMU06B31 2 X SMIQ02 X SMV03 SMIQ02B X SMW03 SMIQ02E SMW06 SMIQ03 X SMX SMIQ03B X SMY01 1 Requires firmware version V2 10 x or higher 2 Requ...

Page 40: ...r in read only mode directly from the External Generator configuration dialog box From there they can be edited and stored under a different name and are then available on the R S FSW For details see the R S FSW User Manual 4 7 4 4 Calibration Mechanism A common measurement setup includes a signal generator a device under test DUT and a signal and spectrum analyzer Therefore it is useful to measur...

Page 41: ...ng used Ext Gen The normal ized trace from the calibration sweep is a constant 0 dB line as calibration trace reference trace 0 As long as the same settings are used for measurement as for calibration the normal ized measurement results should not contain any inherent frequency or power distor tions Thus the measured DUT values are very accurate Approximate normalization As soon as any of the cali...

Page 42: ...bration settings which are stored with the refer ence dataset on the R S FSW Storing the normalized reference trace as a transducer factor The inverse normalized reference trace can also be stored as a transducer factor for use in other R S FSW applications that do not support external generator control The normalized trace data is converted to a transducer with unit dB and stored in a file with t...

Page 43: ...s displayed on this ref erence line indicated by a red line in the diagram By default the reference line is dis played at the top of the diagram If you shift the reference line the normalized trace is shifted as well Shifting the reference line and normalized trace You can shift the reference line and thus the normalized trace in the result display by changing the Reference Position or the Referen...

Page 44: ...equency Denominator division factor for the current analyzer frequency FOffset frequency offset for the current analyzer frequency for example for frequency converting measurements or harmonics measurements The value range for the offset depends on the selected generator The default setting is 0 Hz Offsets other than 0 Hz are indicated by the FRQ label in the channel bar see also chapter 4 7 4 8 D...

Page 45: ... FSW can only measure a value when the generator signals the end of the setting procedure via the BLANK signal Using the TTL interface allows for considerably higher measurement rates than pure GPIB control because the frequency stepping of the R S FSW is directly coupled with the frequency stepping of the generator Reverse sweep The frequency offset for automatic coupling can be used to sweep in ...

Page 46: ...surement APX approximation Normalization on Deviation from the reference setting occurs Aborted normalization or no calibration performed yet Error and status messages The following status and error messages may occur during external generator control Message Description Ext Generator GPIB Handshake Error Ext Generator TCPIP Handshake Error Ext Generator TTL Handshake Error Connection to the gener...

Page 47: ...urces The R S FSW provides a connector NOISE SOURCE CONTROL with a voltage sup ply for an external noise source By switching the supply voltage for an external noise source on or off in the firmware you can activate or deactive the device as required External noise sources are useful when you are measuring power levels that fall below the noise floor of the R S FSW itself for example when measurin...

Page 48: ...e is also user definable Note however that the trigger pulse level is always opposite to the constant signal level defined by the output Level setting e g for Level High a constant high signal is output to the connector until the Send Trigger button is selected Then a low pulse is sent Providing trigger signals as output is described in detail in the R S FSW User Manual 4 8 Analog Demodulation in ...

Page 49: ...ined in the analysis interval of the application the line is indicated in all time based result displays such as time symbol slot or bit dia grams By default the analysis line is displayed however it can be hidden from view manually In all result displays the AL label in the window title bar indicates whether or not the analysis line lies within the analysis interval or not orange AL the line lies...

Page 50: ...e via the Analog Demod menu which is displayed when you press the MEAS CONFIG key The remote commands required to perform these tasks are described in chapter 11 Remote Commands for Analog Demodulation Measurements on page 170 Predefined settings For commonly performed measurements standard setup files are provided for quick and easy configuration Simply load an existing standard settings file and...

Page 51: ... Trigger settings FREE RUN Trigger offset 0 Demodulation BW 5 MHz Measurement time 62 5 μs Demodulation filter Flat AF filters none Sample rate 8 MHz Sweep points 1001 Squelch state off Squelch level 20 0 dBm Usable I Q Bandwidth 12 228 MHz Traces 1 Clr Wrte Auto Peak detector 2 6 blank Limit check off Evaluations Window 1 FM Time Domain Window 2 Result Summary 5 2 Configuration According to Digit...

Page 52: ...nd files of the currently selected path The default storage location for the settings files is C FSW user predefined AdemodPredefined Note Saving instrument settings in secure user mode In secure user mode all data is stored to volatile memory and is only available during the current instrument session As soon as the power is switched off on the R S FSW the data is cleared To store settings perman...

Page 53: ...ing predefined standard files The standards predefined by Rohde Schwarz available at the time of delivery can be restored using the Restore Stand ards softkey See Restore Standard Files on page 53 Restore Standard Files Setup Standard Restores the standards predefined by Rohde Schwarz available at the time of deliv ery Note that this function will overwrite customized standards that have the same ...

Page 54: ...ed order of processing 1 Input Frontend See chapter 5 4 Input and Frontend Settings on page 55 2 Trigger See chapter 5 5 Trigger Configuration on page 94 3 Data Acquisition See chapter 5 6 Data Acquisition on page 101 4 Demod Display See chapter 5 7 Demodulation Display on page 106 5 Demodulation Settings See chapter 5 8 Demodulation on page 106 6 Analysis See chapter 6 Analysis on page 129 7 Opti...

Page 55: ...e dialog boxes vary depending on the selected window Select an active window from the Specifics for selection list that is displayed in the Overview and in all window specific configuration dialog boxes The Overview and dialog boxes are updated to indicate the settings for the selected window 5 4 Input and Frontend Settings The source and characteristics of the input signal to be demodulated are c...

Page 56: ...ency Input 56 External Mixer Settings 58 Digital I Q Input Settings 69 Analog Baseband Input Settings 71 Probe Settings 72 External Generator Control Settings 73 5 4 1 1 Radio Frequency Input The default input source for the R S FSW is Radio Frequency i e the signal at the RF INPUT connector on the front panel of the R S FSW If no additional options are installed this is the only available input s...

Page 57: ...age 86 This function is not available for input from the Digital Baseband Interface R S FSW B17 or from the Analog Baseband Interface R S FSW B71 For analog baseband input an impedance of 50 Ω is always used Remote command INPut IMPedance on page 183 High Pass Filter 1 3 GHz Activates an additional internal high pass filter for RF input signals from 1 GHz to 3 GHz This filter is used to remove the...

Page 58: ...ce R S FSW B71 see the R S FSW I Q Analyzer and I Q Input User Manual Remote command INPut CONNector on page 182 5 4 1 2 External Mixer Settings The external mixer is configured in the External Mixer tab of the Input dialog box which is available when you do one of the following if the R S FSW B21 option is installed Press the INPUT OUTPUT key then select the External Mixer Config softkey From the...

Page 59: ...input If activated ExtMix is indicated in the channel bar of the application together with the used band see Band on page 60 Remote command SENSe MIXer STATe on page 185 RF Start RF Stop Displays the start and stop frequency of the selected band read only The frequency range for the user defined band is defined via the harmonics configura tion see Range 1 2 on page 61 For details on available freq...

Page 60: ...ge 1 2 on page 61 Remote command SENSe MIXer HARMonic BAND VALue on page 188 RF Overrange If enabled the frequency range is not restricted by the band limits RF Start and RF Stop In this case the full LO range of the selected harmonics is used Remote command SENSe MIXer RFOVerrange STATe on page 191 Preset Band Restores the presettings for the selected band Note changes to the band and mixer setti...

Page 61: ...TATe on page 189 Harmonic Order Mixer Settings Harmonics Configuration Defines which of the available harmonic orders of the LO is used to cover the fre quency range By default the lowest order of the specified harmonic type is selected that allows con version of input signals in the whole band If due to the LO frequency the conversion is not possible using one harmonic the band is split For the b...

Page 62: ...S FSW User Manual For details on importing tables see Import Table on page 65 Remote command Average for range 1 SENSe MIXer LOSS LOW on page 190 Table for range 1 SENSe MIXer LOSS TABLe LOW on page 190 Average for range 2 SENSe MIXer LOSS HIGH on page 190 Table for range 2 SENSe MIXer LOSS TABLe HIGH on page 190 Basic Settings The basic settings concern general use of an external mixer They are o...

Page 63: ...aces 1 to 3 Unwanted mixer products are suppressed in this calculated trace Note that automatic signal identification is only available for measurements that per form frequency sweeps not in vector signal analysis or the I Q Analyzer for instance Remote command SENSe MIXer SIGNal on page 186 Auto ID Threshold Defines the maximum permissible level difference between test sweep and reference sweep t...

Page 64: ...hat describe the correction values for conversion loss at certain frequencies The correction values for frequencies between the reference points are obtained via interpolation The currently selected table for each range is displayed at the top of the dialog box All conversion loss tables found in the instrument s C r_s instr user cvl direc tory are listed in the Modify Tables list New Table 64 Edi...

Page 65: ...r on page 192 Import Table Imports a stored conversion loss table from any directory and copies it to the instru ment s C r_s instr user cvl directory It can then be assigned for use for a specific frequency range see Conversion loss on page 61 Creating and Editing Conversion Loss Tables Conversion loss tables can be defined and edited in the Edit conversion loss table dialog box which is displaye...

Page 66: ... 68 Shift y 68 Save 68 File Name Defines the name under which the table is stored in the C r_s instr user cvl directory on the instrument The name of the table is identical with the name of the file without extension in which the table is stored This setting is mandatory The ACL extension is automatically appended during storage Remote command SENSe CORRection CVL SELect on page 195 Input and Fron...

Page 67: ...as The bias current which is required to set the mixer to its optimum operating point It corresponds to the short circuit current The bias current can range from 10 mA to 10 mA The actual bias current is lower because of the forward voltage of the mixer diode s Tip You can also define the bias interactively while a preview of the trace with the changed setting is displayed see Bias Settings on pag...

Page 68: ... loss is assumed to be the same as that for the first and last reference value The current configuration of the conversion loss function as described by the position value entries is displayed in the preview pane to the right of the table Remote command SENSe CORRection CVL DATA on page 193 Insert Value Inserts a new position value entry in the table If the table is empty a new entry at 0 Hz is in...

Page 69: ...e Rate 69 Full Scale Level 70 Adjust Reference Level to Full Scale Level 70 Connected Instrument 70 DigIConf 70 Digital I Q Input State Enables or disable the use of the Digital IQ input source for measurements Digital IQ is only available if the Digital Baseband Interface R S FSW B17 is installed Remote command INPut SELect on page 184 Input Sample Rate Defines the sample rate of the digital I Q ...

Page 70: ... displayed Name and serial number of the instrument connected to the Digital Baseband Inter face Used port Sample rate of the data currently being transferred via the Digital Baseband Inter face Level and unit that corresponds to an I Q sample with the magnitude 1 Full Scale Level if provided by connected instrument Remote command INPut DIQ CDEVice on page 203 DigIConf Starts the optional R S DigI...

Page 71: ...and Interface R S FSW B71 in the applications that support it They can be configured via the INPUT OUTPUT key in the Input dialog box For more information on the Analog Baseband Interface R S FSW B71 see the R S FSW I Q Analyzer and I Q Input User Manual Analog Baseband Input State 71 I Q Mode 71 Input configuration 72 Center Frequency 72 Analog Baseband Input State Enables or disable the use of t...

Page 72: ...er frequency Low IF Q Remote command INPut IQ TYPE on page 199 Input configuration Defines whether the input is provided as a differential signal via all 4 Analog Baseband connectors or as a plain I Q signal via 2 simple ended lines Note Both single ended and differential probes are supported as input however since only one connector is occupied by a probe the Single ended setting must be used for...

Page 73: ...on the instrument directly from the probe Select the action that you want to start from the probe Run single Starts one data acquisition No action Prevents unwanted actions due to unintended usage of the microbut ton Remote command SENSe PROBe p SETup MODE on page 207 5 4 1 6 External Generator Control Settings The External Generator settings are available in the Input dialog box if the R S FSW Ex...

Page 74: ...ency Min Frequency Max 75 Level Min Level Max 75 Generator Type Selects the generator type and thus defines the generator setup file to use For an overview of supported generators see chapter 4 7 4 2 Overview of Generators Supported by the R S FSW B10 Option on page 38 For information on generator setup files see chapter 4 7 4 3 Generator Setup Files on page 40 Remote command SYSTem COMMunicate RD...

Page 75: ...DEVice GENerator ADDRess on page 224 Reference Selects the internal R S FSW or an external frequency reference to synchronize the R S FSW with the generator default internal Remote command SOURce EXTernal ROSCillator SOURce on page 223 Edit Generator Setup File Displays the setup file for the currently selected Generator Type in read only mode in an editor Although the existing setup files are dis...

Page 76: ...tor Remote command SOURce EXTernal STATe on page 222 Source Power The output power of the external generator The default output power is 20 dBm The range is specified in the data sheet Remote command SOURce EXTernal POWer LEVel on page 222 Source Offset Constant level offset for the external generator Values from 200 dB to 200 dB in 1 dB steps are allowed The default setting is 0 dB Offsets are in...

Page 77: ... by Manual Source Frequency which is displayed when you select Manual cou pling Remote command SOURce EXTernal FREQuency COUPling STATe on page 220 Manual Source Frequency Defines the fixed frequency to be used by the generator Remote command SOURce EXTernal FREQuency on page 220 Automatic Source Frequency Numerator Denominator Offset With automatic frequency coupling a series of frequencies is de...

Page 78: ... the generator calculated from the config ured generator frequency and the start value defined for the R S FSW Result Frequency Stop For reference only The stop frequency for the generator calculated from the config ured generator frequency and the stop value defined for the R S FSW Source Calibration Functions The calibration functions of the external generator are available in the Source Calibra...

Page 79: ...cuit reflection type measurement to determine a reference trace for calibration If both reflection type calibrations open circuit short circuit are carried out the refer ence trace is calculated by averaging the two measurements The order of the two cali bration measurements is irrelevant Remote command SENSe CORRection METHod on page 226 Selects the reflection method SENSe CORRection COLLect ACQu...

Page 80: ...tom is 0 By default the 0 dB line is displayed at the top of the diagram 100 This setting is only available if normalization is on see Source Calibration Normalize on page 79 The reference line defined by the reference value and reference position is similar to the Reference Level defined in the Amplitude settings However this reference line only affects the y axis scaling in the diagram it has no...

Page 81: ...ower Sensor tab of the Input dialog box Each sensor is configured on a separate tab State 82 Continuous Value Update 82 Select 82 Zeroing Power Sensor 82 Frequency Manual 83 Frequency Coupling 83 Unit Scale 83 Meas Time Average 83 Setting the Reference Level from the Measurement Meas Ref 83 Reference Value 84 Use Ref Lev Offset 84 Average Count Number of Readings 84 Duty Cycle 84 Using the power s...

Page 82: ...enerally acti vated State function The detected serial numbers of the power sensors connected to the instrument are provided in a selection list For each of the four available power sensor indexes Power Sensor 1 Power Sensor 4 which correspond to the tabs in the configura tion dialog one of the detected serial numbers can be assigned The physical sensor is thus assigned to the configuration settin...

Page 83: ...ge Selects the measurement time or switches to manual averaging mode In general results are more precise with longer measurement times The following settings are recommended for different signal types to obtain stable and precise results Short Stationary signals with high power 40dBm because they require only a short measurement time and short measurement time provides the highest repetition rates...

Page 84: ... power are measured This setting can be used to minimize the influence of noise in the power sensor measurement Remote command SENSe PMETer p MTIMe AVERage COUNt on page 214 Duty Cycle Sets the duty cycle to a percent value for the correction of pulse modulated signals and activates the duty cycle correction With the correction activated the sensor calculates the signal pulse power from this value...

Page 85: ...e time the input signal must stay below the trigger level before triggering again Slope Using the power sensor as an external trigger Defines whether triggering occurs when the signal rises to the trigger level or falls down to it Remote command SENSe PMETer p TRIGger SLOPe on page 218 5 4 3 Amplitude The amplitude is configured in the Amplitude tab of the Input Frontend dialog box Amplitude setti...

Page 86: ... option B24 89 Input Coupling 89 Impedance 90 Reference Level Defines the expected maximum reference level Signal levels above this value may not be measured correctly which is indicated by the IF OVLD status display OVLD for analog baseband or digitial baseband input The reference level is also used to scale power diagrams the reference level is then used as the maximum on the y axis Since the R ...

Page 87: ...ttenuation took place R S FSW increases the displayed power values a negative value indicates an external gain R S FSW decreases the displayed power values The setting range is 200 dB in 0 01 dB steps Remote command DISPlay WINDow n TRACe Y SCALe RLEVel OFFSet on page 235 Unit Reference Level The R S FSW measures the signal voltage at the RF input In the default state the level is displayed at a p...

Page 88: ...ttenuation the reference level is adjusted accordingly and the warning Limit reached is displayed NOTICE Risk of hardware damage due to high power levels When decreasing the attenuation manually ensure that the power level does not exceed the maximum level allowed at the RF input as an overload may lead to hardware damage Remote command INPut ATTenuation on page 235 INPut ATTenuation AUTO on page ...

Page 89: ...nd Interface R S FSW B17 For R S FSW 26 or higher models the input signal is amplified by 30 dB if the pream plifier is activated For R S FSW 8 or 13 models the following settings are available Off Deactivates the preamplifier 15 dB The RF input signal is amplified by about 15 dB 30 dB The RF input signal is amplified by about 30 dB Remote command INPut GAIN STATe on page 237 INPut GAIN VALue on p...

Page 90: ...input an impedance of 50 Ω is always used Remote command INPut IMPedance on page 183 5 4 3 2 Amplitude Settings for Analog Baseband Input The following settings and functions are available to define amplitude settings for input via the Analog Baseband Interface R S FSW B71 in the applications that support it They can be configured via the AMPT key or in the Amplitude tab of the Input dialog box Th...

Page 91: ...rithmetic level offset This offset is added to the measured level irrespec tive of the selected unit The scaling of the y axis is changed accordingly Define an offset if the signal is attenuated or amplified before it is fed into the R S FSW so the application shows correct power results All displayed power level results will be shifted by this value Note however that the Reference Level value ign...

Page 92: ... on page 127 Remote command SENSe ADJust LEVel on page 269 Full Scale Level Mode Value The full scale level defines the maximum power you can input at the Baseband Input connector without clipping the signal The full scale level can be defined automatically according to the reference level or manually For manual input the following values can be selected 0 25 V 0 5 V 1 V 2 V If probes are connecte...

Page 93: ...or it can be manually set to a fixed value 0 1 Demod BW Sets the step size for the center frequency to 10 of the demodula tion bandwidth This is the default setting 0 5 Demod BW Sets the step size for the center frequency to 50 of the demodula tion bandwidth X Demod BW Sets the step size for the center frequency to a manually defined fac tor of the demodulation bandwidth The X Factor defines the p...

Page 94: ...y the trigger signal used by the R S FSW can be output to a connected device and an external trigger signal from a connected device can be used by the R S FSW Trigger settings are identical to the base unit except for the available trigger sources Gating is not available for Analog Demodulation measurements For background information on trigger settings trigger output and working with external tri...

Page 95: ... can be displayed It is recommended that the measurement time covers at least five periods of the audio signal Remote command TRIGger SEQuence SOURce on page 250 Free Run Trigger Source No trigger source is considered Data acquisition is started manually or automatically and continues until stopped explicitely Remote command TRIG SOUR IMM see TRIGger SEQuence SOURce on page 250 External Trigger 1 ...

Page 96: ... see chapter 5 6 Data Acquisition on page 101 Remote command TRIG SOUR IQP see TRIGger SEQuence SOURce on page 250 IF Power Trigger Source The R S FSW starts capturing data as soon as the trigger level is exceeded around the third intermediate frequency This trigger source is only available for RF input It is not available for input from the Digital Baseband Interface R S FSW B17 or the Analog Bas...

Page 97: ...er rates up to 200 Msps only the general purpose bits GP0 and GP1 are available as a Digital I Q trigger source The following table describes the assignment of the general purpose bits to the LVDS connector pins For details on the LVDS connector see the R S FSW I Q Analyzer User Manual Table 5 2 Assignment of general purpose bits to LVDS connector pins Bit LVDS pin GP0 SDATA4_P Trigger1 GP1 SDATA4...

Page 98: ...e trigger source is automatically switched to Free Run Remote command TRIG SOUR RFP see TRIGger SEQuence SOURce on page 250 Power Sensor Trigger Source Uses an external power sensor as a trigger source This option is only available if a power sensor is connected and configured Note For R S power sensors the Gate Mode Lvl is not supported The signal sent by these sensors merely reflects the instant...

Page 99: ...al must stay below the trigger level before triggering again Note For input from the Analog Baseband Interface R S FSW B71 using the base band power trigger BBP the default drop out time is set to 100 ns to avoid uninten tional trigger events as no hysteresis can be configured in this case Remote command TRIGger SEQuence DTIMe on page 245 Slope For all trigger sources except time and frequency mas...

Page 100: ...gnal is provided Remote command OUTPut TRIGger port LEVel on page 253 OUTPut TRIGger port DIRection on page 253 Output Type Trigger 2 3 Type of signal to be sent to the output Device Trig gered Default Sends a trigger when the R S FSW triggers Trigger Armed Sends a high level trigger when the R S FSW is in Ready for trig ger state This state is indicated by a status bit in the STATus OPERation reg...

Page 101: ...and then demodulated is configured in the Data Acquisi tion dialog box MSRA MSRT operating mode In MSRA MSRT operating mode only the MSRA MSRT Master channel actually cap tures data from the input signal The data acquisition settings for the Analog Demodu lation application in MSRA MSRT mode define the analysis interval For details on the MSRA operating mode see the R S FSW MSRA User Manual For de...

Page 102: ...tion Bandwidth on page 28 For details on the relation between demodulation bandwidth and sampling rate refer to chapter 4 3 Sample Rate Measurement Time and Trigger Offset on page 29 Remote command SENSe BANDwidth BWIDth DEMod on page 242 Demodulation Filter Defines the filter to be used for demodulation For details on sample rates measurement times and trigger offsets for various demod ulation ba...

Page 103: ...ure buffer starts at the trigger time 0 In MSRT mode the offset may be negative if a pretrigger time is defined Remote command SENSe MSRA CAPTure OFFSet on page 338 SENSe RTMS CAPTure OFFSet on page 339 Resolution Bandwidth Defines the resolution bandwidth for data acquisition The available range is specified in the data sheet Remote command SENSe BANDwidth BWIDth RESolution on page 243 5 6 2 Swee...

Page 104: ... effect the next time the Sequencer activates that channel and only for a channel defined sequence In this case a channel in continuous sweep mode is swept repeatedly If the Sequencer is active in MSRT mode the Continuous Sweep function does not start data capturing it merely has an effect on trace averaging over multiple sequen ces In this case trace averaging is performed Furthermore the RUN CON...

Page 105: ...ts the number of sweeps set in Sweep Count without deleting the trace of the last measurement While the measurement is running the Continue Single Sweep softkey and the RUN SINGLE key are highlighted The running measurement can be aborted by selecting the highlighted softkey or key again Remote command INITiate CONMeas on page 278 Refresh This function is only available if the Sequencer is deactiv...

Page 106: ...e per formed Remote command SENSe SWEep COUNt on page 243 SENSe AVERage COUNt on page 274 5 7 Demodulation Display The demodulated signal can be displayed using various evaluation methods All evalu ation methods available for the Analog Demodulation application are displayed in the evaluation bar in SmartGrid mode when you do one of the following Select the SmartGrid icon from the toolbar Select t...

Page 107: ...ement parameters define how the measurement is performed They are configured in the Demod tab of the Demodulation Settings dia log box To display this dialog box do one of the following Select the Demod Settings button in the Analog Demodulation Overview and select the Demod tab Select the MEAS CONFIG key and then the Demod Config softkey Squelch State 108 Squelch Level 108 AF Coupling 108 Selecte...

Page 108: ...ection of the frequency offset and phase offset of the input signal This function is only available for FM or PM time domain evaluations FM time evaluation If DC is selected the absolute frequency is displayed i e an input signal with an offset relative to the center frequency is not displayed symmetrically with respect to the zero line If AC is selected the frequency offset is automatically corre...

Page 109: ... mode ON Activates the time domain zoom OFF Deactivates the time domain zoom and restores the original display If more measured values than measurement points are available sev eral measured values are combined in one measurement point according to the method of the selected trace detector Remote command SENSe ADEMod n ZOOM STATe on page 258 Start Time Domain Zoom Defines the start time for the ti...

Page 110: ...om the phase value with the display thus showing 180 Off The phase is not wrapped This setting is only available for PM time domain displays with DC coupling 5 8 2 Demodulation Spectrum The demodulation spectrum defines which span of the demodulated data is evaluated It is configured in the Spectrum tab of the Demodulation Settings dialog box To display this dialog box do one of the following Sele...

Page 111: ...start frequency of the demodulated data to evaluate Remote command SENSe ADEMod AF STARt on page 259 AF Stop Defines the stop frequency of the demodulated data to evaluate The maximum AF stop frequency corresponds to half the demodulation bandwidth Remote command SENSe ADEMod AF STOP on page 259 AF Span Defines the span around the center frequency of the demodulated data to evaluate The maximum sp...

Page 112: ...e spond to the settings defined in the Input and Data Acquisition configuration Center frequency 112 Span 112 Demodulation Bandwidth 113 RF Full Span 113 Center frequency Defines the normal center frequency of the signal The allowed range of values for the center frequency depends on the frequency span span 0 spanmin 2 fcenter fmax spanmin 2 fmax and spanmin are specified in the data sheet Remote ...

Page 113: ...Dwidth BWIDth DEMod on page 242 RF Full Span Sets the span around the center frequency of the RF data to be evaluated to the demodulation bandwidth Remote command SENSe ADEMod SPECtrum SPAN MAXimum on page 260 5 8 3 AF Filter The AF filter reduces the evaluated bandwidth of the demodulated signal and can define a weighting function It is configured in the AF Filter tab of the Demodulation Settings...

Page 114: ...00 Hz demodulation bandwidth 3 MHz 300 Hz 800 Hz demodulation bandwidth 8 MHz Manual A high pass filter with the manually defined frequency is used Note If online demodulation output is active the predefined fixed filters are not avail able In this case the frequency for the high pass filter must be defined manually see also chapter 5 9 2 Analog Demodulation Output Settings on page 124 If a filter...

Page 115: ...e demodulation output is activated it is replaced by a manual filter that provides corresponding results if possible Relative low pass filters Relative filters 3 dB can be selected in of the demodulation bandwidth The fil ters are designed as 5th order Butterworth filter 30 dB octave and active for all demodulation bandwidths None deactivates the AF low pass filter default Remote command SENSe FIL...

Page 116: ...demodulation This is done by the deem phasis filter The deemphasis filter is active in the following demodulation bandwidth range 25 µs 25 kHz demodulation bandwidth 40 MHz 50 µs 6 4 kHz demodulation bandwidth 18 MHz 75 µs 6 4 kHz demodulation bandwidth 18 MHz 750 µs 800 Hz demodulation bandwidth 3 MHz Depending on the deemphasis filter a minimum demodulation bandwidth is required for an error les...

Page 117: ... and then the Scale Config softkey Depending on the evaluation AF or RF display the settings vary AF Evaluation 117 RF Evaluation 119 5 8 4 1 AF Evaluation These settings are only available for AF evaluations Dev per Division Db per Division 117 Reference Value Position 118 Reference Value 118 AF Coupling 118 Deviation 119 AF Auto Scale 119 Dev per Division Db per Division Defines the modulation d...

Page 118: ...each evaluation AF time display The trace display takes individual frequency phase offsets into account in contrast the AF Coupling setting permits automatic correction by the average frequency phase offset of the signal and can therefore not be activated simultaneously AF spectrum display In the default setting the reference value defines the modulation depth or the FM PM deviation at the upper d...

Page 119: ... respect to the zero line Remote command SENSe ADEMod n AF COUPling on page 255 Deviation Switches between logarithmic and linear display of the modulation depth or the phase deviation or the frequency deviation Remote command DISPlay WINDow n TRACe Y SPACing on page 239 AF Auto Scale Activates automatic scaling of the y axis for AF measurements RF power and RF spectrum measurements are not affect...

Page 120: ...nce it is not adapted further if the measurement settings are changed again Remote command DISPlay WINDow n TRACe Y SCALe AUTO ONCE on page 238 Scaling Defines the scaling method for the y axis Logarithmic Logarithmic scaling only available for logarithmic units dB and A V Watt Linear Unit Linear scaling in the unit of the measured signal Linear Per cent Linear scaling in percentages from 0 to 100...

Page 121: ...e Unit Rad Deg Sets the phase unit to rad or deg for displaying PM signals Remote command UNIT ANGLe on page 266 THD Unit DB Sets the unit to percent or DB for the calculation of the THD in the Result Summary Remote command UNIT THD on page 266 5 9 Output Settings Output Settings 121 Analog Demodulation Output Settings 124 5 9 1 Output Settings The R S FSW can provide output to special connectors ...

Page 122: ...s the supply voltage for an external noise source on or off External noise sources are useful when you are measuring power levels that fall below the noise floor of the R S FSW itself for example when measuring the noise level of a DUT Remote command DIAGnostic SERVice NSOurce on page 229 Trigger 2 3 Defines the usage of the variable TRIGGER INPUT OUTPUT connectors where Trigger 2 TRIGGER INPUT OU...

Page 123: ...gister in the R S FSW User Manual and the description of the AUX port in the R S FSW Getting Started manual User Defined Sends a trigger when user selects Send Trigger button In this case further parameters are available for the output signal Remote command OUTPut TRIGger port OTYPe on page 254 Level Output Type Trigger 2 3 Defines whether a constant high 1 or low 0 signal is sent to the output co...

Page 124: ...eechapter 5 8 3 AF Filter on page 113 However a maximum of two high pass low pass or deemphasis filters can be active at the same time if analog demodulation output is active Online Demodulation Output State 124 Output Selection 124 AF Coupling 125 AC Cutoff Frequency 125 Phones Output 125 Online Demodulation Output State Enables or disables online demodulation output If enabled the demodulated au...

Page 125: ...spect to the zero line PM time evaluation If DC is selected the phase runs according to the existing frequency offset In addi tion the DC signal contains a phase offset of π If AC is selected the frequency offset and phase offset are automatically corrected i e the trace is always symmetric with respect to the zero line Remote command SENSe ADEMod n AF COUPling on page 255 AC Cutoff Frequency Defi...

Page 126: ... Automatically Auto Level 127 Resetting the Automatic Measurement Time Meastime Auto 127 Changing the Automatic Measurement Time Meastime Manual 127 Upper Level Hysteresis 127 Lower Level Hysteresis 127 AF Auto Scale 128 Adjusting all Determinable Settings Automatically Auto All Activates all automatic adjustment functions for the current measurement settings This includes Auto Frequency Auto Leve...

Page 127: ...etting adjustments Enter the value in seconds This function is only available for the MSRA MSRT Master not for the applications Remote command SENSe ADJust CONFigure DURation MODE on page 268 SENSe ADJust CONFigure DURation on page 267 Upper Level Hysteresis When the reference level is adjusted automatically using the Auto Level function the internal attenuators and the preamplifier are also adjus...

Page 128: ...3 9240 02 17 AF Auto Scale Activates automatic scaling of the y axis for AF measurements RF power and RF spectrum measurements are not affected by the auto scaling Remote command SENSe ADJust SCALe Y AUTO CONTinuous on page 269 Automatic Settings ...

Page 129: ...139 6 4 1 Marker Search Settings 139 6 4 2 Positioning Functions 140 6 5 Marker Function Configuration 142 6 5 1 Phase Noise Measurement Marker 143 6 5 2 n dB Down Marker 144 6 5 3 Deactivating All Marker Functions 145 6 6 Marker Peak List Configuration 145 6 7 Limit Line Settings and Functions 147 6 7 1 Limit Line Management 147 6 7 2 Limit Line Details 150 6 8 Zoom Functions 153 6 9 Analysis in ...

Page 130: ...ode 131 Average Count 132 Predefined Trace Settings Quick Config 132 Trace 1 Trace 2 Trace 3 Trace 4 Softkeys 132 Trace 1 Trace 2 Trace 3 Trace 4 Trace 5 Trace 6 Selects the corresponding trace for configuration The currently selected trace is high lighted orange Remote command Selected via numeric suffix of TRACe 1 6 commands Trace Mode Defines the update mode for subsequent traces Clear Write Ov...

Page 131: ...K54 measurement option is installed and the filter type CISPR is selected additional detectors are availa ble even if EMI measurement is not active Remote command SENSe WINDow n DETector trace FUNCtion on page 275 SENSe WINDow n DETector t FUNCtion AUTO on page 276 Hold If activated traces in Min Hold Max Hold and Average mode are not reset after specific parameter changes have been made Normally ...

Page 132: ...procedures If the trace modes Average Max Hold or Min Hold are set In continuous sweep mode if sweep count 0 default averaging is performed over 10 sweeps For sweep count 1 no averaging maxhold or minhold operations are per formed Remote command SENSe AVERage COUNt on page 274 Predefined Trace Settings Quick Config Commonly required trace settings have been predefined and can be applied very quick...

Page 133: ... Trace to Export 134 Decimal Separator 134 Export Trace to ASCII File 134 Export all Traces and all Table Results Selects all displayed traces and result tables e g Result Summary marker table etc in the current application for export to an ASCII file Alternatively you can select one specific trace only for export see Trace to Export The results are output in the same order as they are displayed o...

Page 134: ...e chapter 11 7 5 Reference ASCII File Export For mat on page 297 Note Secure user mode In secure user mode settings that are to be stored on the instrument are stored to vol atile memory which is restricted to 256 MB Thus a Memory full error may occur although the hard disk indicates that storage space is still available To store data permanently select an external storage location such as a USB m...

Page 135: ...er is defined as a normal marker whereas all others are defined as delta markers with reference to the first marker All markers are assigned to trace 1 but only the first marker is active Selected Marker 135 Marker State 136 Marker Position X value 136 Marker Type 136 Reference Marker 136 Linking to Another Marker 136 Assigning the Marker to a Trace 137 All Markers Off 137 Selected Marker Marker n...

Page 136: ...witches the type of the selected marker Normal A normal marker indicates the absolute value at the defined position in the diagram Delta A delta marker defines the value of the marker relative to the speci fied reference marker marker 1 by default Remote command CALCulate n MARKer m STATe on page 301 CALCulate n DELTamarker m STATe on page 304 Reference Marker Defines a marker as the reference mar...

Page 137: ... frequency or time but indicates the value of the new trace The marker can also be assigned to the currently active trace using the Marker to Trace softkey in the Marker menu If a trace is turned off the assigned markers and marker functions are also deactiva ted Remote command CALCulate n MARKer m TRACe on page 301 All Markers Off Deactivates all markers in one step Remote command CALCulate n MAR...

Page 138: ... is moved from one sweep point to the next This setting is required for a very precise positioning if more sweep points are collected than the number of pixels that can be displayed on the screen It is the default mode Remote command CALCulate MARKer X SSIZe on page 306 Defining a Fixed Reference Instead of using a reference marker that may vary its position depending on the mea surement results a...

Page 139: ... or to use the current marker position to define another characteristic value In order to determine the required marker position searches may be performed The search results can be influenced by special settings Most marker positioning functions and the search settings are available in the MKR menu Search settings are also available via the MARKER key or in the vertical Marker Con fig tab of the A...

Page 140: ...r m MAXimum RIGHt on page 311 CALCulate n MARKer m MAXimum RIGHt on page 309 CALCulate n DELTamarker m MINimum LEFT on page 311 CALCulate n MARKer m MINimum LEFT on page 309 CALCulate n DELTamarker m MINimum NEXT on page 311 CALCulate n MARKer m MINimum NEXT on page 310 CALCulate n DELTamarker m MINimum RIGHt on page 312 CALCulate n MARKer m MINimum RIGHt on page 310 Peak Excursion Defines the min...

Page 141: ...and CALCulate n MARKer m MAXimum PEAK on page 309 CALCulate n DELTamarker m MAXimum PEAK on page 311 Search Next Peak Sets the selected marker delta marker to the next lower maximum of the assigned trace If no marker is active marker 1 is activated Remote command CALCulate n MARKer m MAXimum NEXT on page 309 CALCulate n DELTamarker m MAXimum NEXT on page 311 Search Minimum Sets the selected marker...

Page 142: ... via the Marker Function dialog box To display this dialog box do one of the following Press the MKR FUNC key then select the Select Marker Function softkey In the Overview select Analysis and switch to the vertical Marker Function Config tab Not all marker functions are available for all evaluations The following table indicates which functions are available for which evaluations Evaluation n dB ...

Page 143: ...rs are configured in the Phase Noise Config dialog box using the Phase Noise function The individual marker settings correspond to those defined in the Marker dialog box Any settings to the marker state or type changed in the Marker Function dialog box are also changed in the Marker dialog box and vice versa To display the Phase Noise Config dialog box do one of the following Press the MKR FUNC ke...

Page 144: ...maximum value of the selected trace as the reference point If Automatic Peak Search is activated a peak search is started automatically after each sweep and the result is used as the reference point Remote command CALCulate n DELTamarker m FUNCtion FIXed RPOint Y on page 313 CALCulate n DELTamarker m FUNCtion FIXed RPOint X on page 312 CALCulate n DELTamarker m FUNCtion FIXed RPOint MAXimum PEAK o...

Page 145: ...evel from the reference marker 1 used to determine the bandwidth or time span Remote command CALCulate n MARKer m FUNCtion NDBDown FREQuency on page 318 CALCulate n MARKer m FUNCtion NDBDown TIME on page 320 6 5 3 Deactivating All Marker Functions All special marker functions can be deactivated in one step Use the All Functions Off button in the Marker Functions dialog box 6 6 Marker Peak List Con...

Page 146: ...ommand CALCulate n MARKer m FUNCtion FPEaks STAT on page 316 Sort Mode Defines whether the peak list is sorted according to the x values or y values In either case the values are sorted in ascending order Remote command CALCulate n MARKer m FUNCtion FPEaks SORT on page 315 Maximum Number of Peaks Defines the maximum number of peaks to be determined and displayed Remote command CALCulate n MARKer m...

Page 147: ...te command CALCulate n MARKer m FUNCtion FPEaks ANNotation LABel STATe on page 314 Exporting the Peak List The peak list can be exported to an ASCII file DAT for analysis in an external appli cation Remote command MMEMory STORe PEAK on page 317 FORMat DEXPort DSEParator on page 292 6 7 Limit Line Settings and Functions Up to 8 limit lines can be displayed simultaneously in the R S FSW Many more ca...

Page 148: ...ter 6 7 2 Limit Line Details on page 150 Name 148 Unit 148 Compatibility 148 Visibility 149 Traces to be Checked 149 Comment 149 Included Lines in Overview View Filter 149 Show lines for all modes 149 X Offset 149 Y Offset 149 Create New Line 150 Edit Line 150 Copy Line 150 Delete Line 150 Disable All Lines 150 Name The name of the stored limit line Unit The unit in which the y values of the data ...

Page 149: ... ible Only compatible lines Whether a line is compatible or not is indicated in the Compatibility setting Show all All stored limit lines with the file extension LIN in the limits sub folder of the main installation folder if not restricted by Show lines for all modes setting Show lines for all modes Included Lines in Overview View Filter If activated default limit lines from all applications are ...

Page 150: ...Line Copy the selected limit line configuration to create a new line Remote command CALCulate LIMit k COPY on page 330 Delete Line Delete the selected limit line configuration Remote command CALCulate LIMit k DELete on page 330 Disable All Lines Disable all limit lines in one step Remote command CALCulate LIMit k STATe on page 330 6 7 2 Limit Line Details Limit lines details are configured in the ...

Page 151: ...e names The limit line data is stored under this name with a LIN extension Remote command CALCulate LIMit k NAME on page 326 Comment Defines an optional comment for the limit line The text may contain up to 40 charac ters Remote command CALCulate LIMit COMMent on page 322 Threshold Defines an absolute threshold value only for relative scaling of the y axis Remote command CALCulate LIMit k LOWer TH...

Page 152: ... CALCulate LIMit k UPPer MODE on page 327 CALCulate LIMit k CONTrol DOMain on page 323 Y Axis Describes the vertical axis on which the data points of the limit line are defined Includes the following settings Level unit Scaling mode absolute or relative dB values Relative limit values refer to the reference level Limit type upper or lower limit values must stay above the lower limit and below the ...

Page 153: ...efined for the entire limit line see Y Offset on page 149 Remote command CALCulate LIMit k LOWer SHIFt on page 325 CALCulate LIMit k UPPer SHIFt on page 328 Save Saves the currently edited limit line under the name defined in the Name field 6 8 Zoom Functions The zoom functions are only available from the toolbar For details on the zoom functions see the R S FSW User Manual Single Zoom 153 Multipl...

Page 154: ...w Deactivating Zoom Selection mode Deactivates zoom mode Tapping the screen no longer invokes a zoom but selects an object Remote command DISPlay WINDow n ZOOM STATe on page 335 single zoom DISPlay WINDow n ZOOM MULTiple zoom STATe on page 336 for each multiple zoom window 6 9 Analysis in MSRA MSRT Mode The data that was captured by the MSRA MSRT Master can be analyzed in the Analog Demodulation a...

Page 155: ...n page 337 CALCulate RTMS ALINe VALue on page 339 Show Line Hides or displays the analysis line in the time based windows By default the line is displayed Note even if the analysis line display is off the indication whether or not the currently defined line position lies within the analysis interval of the active application remains in the window title bars Remote command CALCulate MSRA ALINe SHOW...

Page 156: ...e I Q Analyzer application if available and then perform a Analog Demodulation measurement on that data later using the R S FSW Analog Demodulation application As opposed to storing trace data which may be averaged or restricted to peak values I Q data is stored as it was captured without further processing The data is stored as complex values in 32 bit floating point format Multi channel data is ...

Page 157: ... window by window trace by trace and table row by table row For details on the file format see chapter 11 7 5 Reference ASCII File Export For mat on page 297 Note Secure user mode In secure user mode settings that are to be stored on the instrument are stored to vol atile memory which is restricted to 256 MB Thus a Memory full error may occur although the hard disk indicates that storage space is ...

Page 158: ...cess I Q data such as the I Q Analyzer or optional applications Capturing and exporting I Q data 1 Press the PRESET key 2 Press the MODE key and select the IQ Analyzer or any other application that supports I Q data 3 Configure the data acquisition 4 Press the RUN SINGLE key to perform a single sweep measurement 5 Select the Save icon in the toolbar 6 Select the I Q Export softkey 7 In the file se...

Page 159: ...ed in the current application Previewing the I Q data in a web browser The iq tar file format allows you to preview the I Q data in a web browser 1 Use an archive tool e g WinZip or PowerArchiver to unpack the iq tar file into a folder 2 Locate the folder using Windows Explorer 3 Open your web browser How to Export and Import I Q Data ...

Page 160: ...I Q Data Import and Export R S FSW K7 160 User Manual 1173 9240 02 17 4 Drag the I Q parameter XML file e g example xml into your web browser How to Export and Import I Q Data ...

Page 161: ...ffset multistandard mode only the offset of the analysis interval from the start of the capture buffer 5 Optionally select the Trigger button and define a trigger for data acquisition for example an offline demodulation trigger to start capturing data only when a useful signal is transmitted 6 Select the Demod Display button and select the demodulation displays that are of interest to you up to 6 ...

Page 162: ...n n dB down band width on the Marker Config tab Configure a limit check to detect excessive deviations on the Lines tab 10 Start a new sweep with the defined settings In multistandard mode you may want to stop the continuous measurement mode by the Sequencer and perform a single data acquisition a Select the Sequencer icon from the toolbar b Set the Sequencer state to OFF c Press the RUN SINGLE ke...

Page 163: ...d using the following devices An R S FSW with application firmware R S FSW K7 Analog Demodulation A vector signal generator e g R S SMU Signal Generator R S FSW Fig 9 1 Test setup Signal generator settings e g R S SMU Frequency 500 MHz Level 10 dBm Modulation FM Modulation frequency 10 kHz Frequency deviation 50 kHz Procedure 1 Preset the R S FSW 2 Set the center frequency to 500 MHz 3 Set the ref...

Page 164: ...of the sig nal 6 Adjust the y axis scaling to the measured frequency deviation automatically by selecting the Scale Config softkey and in the Scaling tab setting AF Auto Scale to ON Fig 9 3 Auto scaled measurement of 10 signal periods continuous 7 Display the RF spectrum of the measured signal to determine the required demod ulation bandwidth Select the Display Config softkey and add an RF Spectru...

Page 165: ... 5 MHz is much too large the actual signal takes up only a small part of the displayed range That means that any noise or additional signals apart from the FM signal of interest may be included in the measured results Select the Demod BW softkey and reduce the value to 200 kHz Fig 9 5 RF spectrum with demodulation bandwidth 200 kHz The span is automatically reduced to 200 kHz as well as only the d...

Page 166: ...eful to display only a small range from the demodulated bandwidth However this means the RF spectrum will still not show the entire signal 10 Increase the span manually to show the entire demodulated bandwidth a Select the RF Spectrum window b Press the SPAN key c Select the Full Span softkey Fig 9 6 RF spectrum with demodulation bandwidth 400 kHz 11 Once the correct DBW has been determined you ca...

Page 167: ...Spectrum diagram is scaled according to the current measurement automatically Each diagram is scaled individually so that the reference values at the top of the two diagrams can differ 100 kHz in the FM Time Domain versus 50 kHz in the FM Spectrum However you can adjust the values manually a Select the FM Spectrum window to set the focus in it b Press the AMPT key and select the Scale Config softk...

Page 168: ... the top of both y axes are now identical the reference values indicated in the window title bars are not This is due to the fact that by default in AF time domain displays the reference value is defined at the reference position 50 center of diagram while in AF frequency domains it is defined at the position 100 top of diagram ...

Page 169: ...should be appropriate This procedure is demonstrated in the measurement example described in chapter 9 Measurement Example Demodulating an FM Signal on page 163 For further recommendations on finding the correct demodulation bandwidth see chap ter 4 2 Demodulation Bandwidth on page 28 Adjusting the displayed span Be aware that the span of the RF Spectrum display is not automatically increased for ...

Page 170: ...FSW User Manual General R S FSW Remote Commands The application independant remote commands for general tasks on the R S FSW are also available for Analog Demodulation measurements and are described in the R S FSW User Manual In particular this comprises the following functionality Managing Settings and Results Setting Up the Instrument Using the Status Register Channel specific commands Apart fro...

Page 171: ...ore complete description refer to the User Manual of the R S FSW Remote command examples Note that some remote command examples mentioned in this general introduction may not be supported by this particular application 11 1 1 Conventions used in Descriptions Note the following conventions used in the remote command descriptions Command usage If not specified otherwise commands can be used both for...

Page 172: ...s not matter Example SENSe FREQuency CENTer is the same as SENS FREQ CENT 11 1 3 Numeric Suffixes Some keywords have a numeric suffix if the command can be applied to multiple instances of an object In that case the suffix selects a particular instance e g a mea surement window Numeric suffixes are indicated by angular brackets n next to the keyword If you don t quote a suffix for keywords that su...

Page 173: ...lution In the short form without optional keywords BAND 1MHZ would have the same effect as BWID 1MHZ 11 1 6 SCPI Parameters Many commands feature one or more parameters If a command supports more than one parameter these are separated by a comma Example LAYout ADD WINDow Spectrum LEFT MTABle Parameters may have different forms of values Numeric Values 173 Boolean 174 Character Data 175 Character S...

Page 174: ...ber In case of physical quantities it applies the basic unit e g Hz in case of frequencies The number of dig its after the decimal point depends on the type of numeric value Example Setting SENSe FREQuency CENTer 1GHZ Query SENSe FREQuency CENTer would return 1E9 In some cases numeric values may be returned as text INF NINF Infinity or negative infinity Represents the numeric values 9 9E37 or 9 9E...

Page 175: ... a format which is suitable for the transmission of large amounts of data The ASCII character introduces the data block The next number indicates how many of the following digits describe the length of the data block In the example the 4 follow ing digits indicate the length to be 5168 bytes The data bytes follow During the trans mission of these data bytes all end or other control signs are ignor...

Page 176: ...s a new measurement channel of the same type and with the identical measurement set tings The name of the new channel is the same as the copied channel extended by a consecutive number e g Spectrum Spectrum 2 The channel to be duplicated must be selected first using the INST SEL command This command is not available if the MSRA MSRT Master channel is selected Example INST SEL Spectrum INST CRE DUP...

Page 177: ...ChannelName2 String containing the name of the new channel Note If the specified name for a new channel already exists the default name extended by a sequential number is used for the new channel see INSTrument LIST on page 177 Example INST CRE REPL Spectrum2 IQ IQAnalyzer Replaces the channel named Spectrum2 by a new measure ment channel of type IQ Analyzer named IQAnalyzer INSTrument DELete Chan...

Page 178: ...zer IQ IQ Analyzer Pulse R S FSW K6 PULSE Pulse Analog Demodulation R S FSW K7 ADEM Analog Demod GSM R S FSW K10 GSM GSM Multi Carrier Group Delay R S FSW K17 MCGD MC Group Delay Noise R S FSW K30 NOISE Noise Phase Noise R S FSW K40 PNOISE Phase Noise Transient Analysis R S FSW K60 TA Transient Analysis VSA R S FSW K70 DDEM VSA 3GPP FDD BTS R S FSW K72 BWCD 3G FDD BTS 3GPP FDD UE R S FSW K73 MWCD ...

Page 179: ...e of the channel you want to rename ChannelName2 String containing the new channel name Note that you can not assign an existing channel name to a new channel this will cause an error Example INST REN Spectrum2 Spectrum3 Renames the channel with the name Spectrum2 to Spectrum3 INSTrument SELect ChannelType Selects the channel type for the current channel See also INSTrument CREate NEW on page 176 ...

Page 180: ...ings This allows for quick and easy configuration for commonly performed measure ments For details see chapter 5 2 Configuration According to Digital Standards on page 51 For an overview of predefined standards and settings see chapter A 1 Predefined Standards and Settings on page 345 SENSe ADEMod PRESet STANdard 180 SENSe ADEMod PRESet RESTore 181 SENSe ADEMod PRESet STORe 181 SENSe ADEMod PRESet...

Page 181: ...directory for Analog Demodu altion standards is C r_s instr user predefined AdemodPredefined Parameters Standard String containing the file name You can save the file in a subdirectory of the directory men tioned above In that case you have to include the relative path to the file Manual operation See Save Standard on page 53 11 4 2 Configuring the Input RF Input 181 Using External Mixers 184 Conf...

Page 182: ...ether the RF input data is taken from the RF input connector or the optional Analog Baseband I connector This command is only available if the Analog Baseband interface R S FSW B71 is installed and active for input For more information on the Analog Baseband Interface R S FSW B71 see the R S FSW I Q Analyzer and I Q Input User Manual Parameters ConnType RF RF input connector AIQI Analog Baseband I...

Page 183: ...ut FILTer YIG STATe State This command turns the YIG preselector on and off Note the special conditions and restrictions for the YIG filter described in YIG Prese lector on page 57 Parameters State ON OFF 0 1 RST 1 0 for I Q Analyzer GSM VSA and MC Group Delay measurements Example INP FILT YIG OFF Deactivates the YIG preselector Manual operation See YIG Preselector on page 57 INPut IMPedance Imped...

Page 184: ...on Analog Baseband input see the R S FSW I Q Analyzer User Manual RST RF Manual operation See Radio Frequency State on page 56 See Digital I Q Input State on page 69 See Analog Baseband Input State on page 71 11 4 2 2 Using External Mixers The commands required to work with external mixers in a remote environment are described here Note that these commands require the R S FSW B21 option to be inst...

Page 185: ... defines the bias current for the high second range This command is only available if the external mixer is active see SENSe MIXer STATe on page 185 Parameters BiasSetting RST 0 0 A Default unit A Manual operation See Bias Settings on page 63 SENSe MIXer BIAS LOW BiasSetting This command defines the bias current for the low first range This command is only available if the external mixer is active...

Page 186: ... detection Auto ID is active ALL Both automatic signal detection functions Signal ID Auto ID are active RST OFF Manual operation See Signal ID on page 63 See Auto ID on page 63 SENSe MIXer THReshold Value This command defines the maximum permissible level difference between test sweep and reference sweep to be corrected during automatic comparison see SENSe MIXer SIGNal on page 186 Parameters Valu...

Page 187: ... can be selected freely within the overlapping frequency range This command is only available if the external mixer is active see SENSe MIXer STATe on page 185 Parameters Frequency numeric value Example MIX ON Activates the external mixer MIX FREQ HAND 78 0299GHz Sets the handover frequency to 78 0299 GHz Manual operation See Handover Freq on page 60 SENSe MIXer FREQuency STARt This command querie...

Page 188: ...e MIXer HARMonic BAND VALue Band This command selects the external mixer band The query returns the currently selected band This command is only available if the external mixer is active see SENSe MIXer STATe on page 185 Parameters Band KA Q U V E W F D G Y J USER Standard waveguide band or user defined band Manual operation See Band on page 60 Table 11 2 Frequency ranges for pre defined bands Ban...

Page 189: ...and for other bands see band definition Example MIX HARM HIGH 2 Manual operation See Harmonic Order on page 61 SENSe MIXer HARMonic TYPE OddEven This command specifies whether the harmonic order to be used should be odd even or both Which harmonics are supported depends on the mixer type Parameters OddEven ODD EVEN EODD RST EVEN Example MIX HARM TYPE ODD Manual operation See Harmonic Type on page ...

Page 190: ...Parameters FileName string file name Example MIX LOSS TABL HIGH MyCVLTable Manual operation See Conversion loss on page 61 SENSe MIXer LOSS TABLe LOW FileName This command defines the file name of the conversion loss table to be used for the low first range Parameters FileName string file name Example MIX LOSS TABL mix_1_4 Specifies the conversion loss table mix_1_4 Manual operation See Conversion...

Page 191: ...on loss tables SENSe CORRection CVL BAND 191 SENSe CORRection CVL BIAS 192 SENSe CORRection CVL CATAlog 192 SENSe CORRection CVL CLEAr 192 SENSe CORRection CVL COMMent 193 SENSe CORRection CVL DATA 193 SENSe CORRection CVL HARMonic 194 SENSe CORRection CVL MIXer 194 SENSe CORRection CVL PORTs 194 SENSe CORRection CVL SELect 195 SENSe CORRection CVL SNUMber 195 SENSe CORRection CVL BAND Type This c...

Page 192: ...ble Before this command can be performed the conversion loss table must be selected see SENSe CORRection CVL SELect on page 195 This command is only available with option B21 External Mixer installed Parameters BiasSetting numeric value RST 0 0 A Default unit A Example CORR CVL SEL LOSS_TAB_4 Selects the conversion loss table CORR CVL BIAS 3A Manual operation See Write to CVL table name on page 64...

Page 193: ...CVL SEL LOSS_TAB_4 Selects the conversion loss table CORR CVL COMM Conversion loss table for FS_Z60 Manual operation See Comment on page 67 SENSe CORRection CVL DATA Freq Level This command defines the reference values of the selected conversion loss tables The values are entered as a set of frequency level pairs A maximum of 50 frequency level pairs may be entered Before this command can be perfo...

Page 194: ...ixer name in the conversion loss table This setting is checked against the current mixer setting before the table can be assigned to the range Before this command can be performed the conversion loss table must be selected see SENSe CORRection CVL SELect on page 195 This command is only available with option B21 External Mixer installed Parameters Type string Name of mixer with a maximum of 16 cha...

Page 195: ...ixer for which the conversion loss table is to be used This setting is checked against the current mixer setting before the table can be assigned to the range Before this command can be performed the conversion loss table must be selected see SENSe CORRection CVL SELect on page 195 This command is only available with option B21 External Mixer installed Parameters SerialNo Serial number with a maxi...

Page 196: ...7 48 GHz GHz to 80 GHz harmonic 6 average conv loss of 20 dB range 2 covers 80 GHz to 138 02 GHz harmonic 8 average conv loss of 30 dB SENS MIX HARM TYPE EVEN SENS MIX HARM HIGH STAT ON SENS MIX FREQ HAND 80GHz SENS MIX HARM LOW 6 SENS MIX LOSS LOW 20dB SENS MIX HARM HIGH 8 SENS MIX LOSS HIGH 30dB Activating automatic signal identification functions Activate both automatic signal identification fu...

Page 197: ...ng the mixer and band settings Use user defined band and assign new cvl table SENS MIX HARM BAND USER Define band by two ranges range 1 covers 47 48 GHz to 80 GHz harmonic 6 cvl table UserTable range 2 covers 80 GHz to 138 02 GHz harmonic 8 average conv loss of 30 dB SENS MIX HARM TYPE EVEN SENS MIX HARM HIGH STAT ON SENS MIX FREQ HAND 80GHz SENS MIX HARM LOW 6 SENS MIX LOSS TABL LOW UserTable SEN...

Page 198: ...Analog Baseband data input and output INPut IQ BALanced STATe 198 INPut IQ FULLscale AUTO 198 INPut IQ FULLscale LEVel 199 INPut IQ TYPE 199 CALibration AIQ DCOFfset I 200 CALibration AIQ DCOFfset Q 200 SENSe PROBe ch SETup CMOFfset 201 TRACe IQ APCon STATe 201 TRACe IQ APCon A 201 TRACe IQ APCon B 202 TRACe IQ APCon RESult 202 INPut IQ BALanced STATe State This command defines whether the input i...

Page 199: ...is command defines the peak voltage at the Baseband Input connector if the full scale level is set to manual mode see INPut IQ FULLscale AUTO on page 198 Parameters PeakVoltage 0 25 V 0 5 V 1 V 2 V Peak voltage level at the connector For probes the possible full scale values are adapted according to the probe s attenuation and maximum allowed power RST 1V Example INP IQ FULL 0 5V Manual operation ...

Page 200: ...irst Low IF I Q The quadrature component of the input signal is filtered and resampled to the sample rate of the application If the center fre quency is not 0 the quadrature component of the input signal is down converted first Low IF Q RST IQ Example INP IQ TYPE Q Manual operation See I Q Mode on page 71 CALibration AIQ DCOFfset I Offset This command defines a DC offset of the I input from the An...

Page 201: ...rage power consumption is calculated at the end of the I Q data measurement This command must be set before the measurement is performed The conversion factors A and B for the calculation are defined using TRACe IQ APCon A and TRACe IQ APCon B The results can be queried using TRACe IQ APCon RESult on page 202 For details see the R S FSW I Q Analyzer and I Q Input User Manual Parameters State ON OF...

Page 202: ...Sult Queries the average power consumption for an analog baseband input This value is only calculated at the end of the I Q data measurement if the TRACe IQ APCon STATe command is set to ON before the measurement is performed For details see the R S FSW I Q Analyzer and I Q Input User Manual Parameters Average numeric value Default unit W Usage Query only 11 4 2 4 Configuring Digital I Q Input and...

Page 203: ...ines the frequency value of the reference clock Remote commands exclusive to digital I Q data input and output INPut DIQ CDEVice 203 INPut DIQ RANGe UPPer AUTO 204 INPut DIQ RANGe COUPling 205 INPut DIQ RANGe UPPer 205 INPut DIQ RANGe UPPer UNIT 205 INPut DIQ SRATe 205 INPut DIQ SRATe AUTO 206 INPut DIQ CDEVice This command queries the current configuration and the status of the digital I Q input ...

Page 204: ...ed Started Passed Failed Done SampleRateType 0 Maximum sample rate is displayed 1 Current sample rate is displayed FullScaleLevel The level in dBm that should correspond to an I Q sample with the magnitude 1 if transferred from connected device If not available 9 97e37 is returned Example INP DIQ CDEV Result 1 SMU200A 103634 Out A 70000000 100000000 Passed Not Started 0 0 Manual operation See Conn...

Page 205: ...ith the magnitude 1 This command is only available if the optional Digital Baseband Interface R S FSW B17 is installed Parameters Level numeric value Range 1 μV to 7 071 V RST 1 V Manual operation See Full Scale Level on page 70 INPut DIQ RANGe UPPer UNIT Unit Defines the unit of the full scale level see Full Scale Level on page 70 The availa bility of units depends on the measurement application ...

Page 206: ...peration See Input Sample Rate on page 69 11 4 2 5 Setting up Probes Probes can be connected to the optional BASEBAND INPUT connectors if the Analog Baseband interface option R S FSW B71 is installed SENSe PROBe p ID PARTnumber 206 SENSe PROBe p ID SRNumber 207 SENSe PROBe p SETup MODE 207 SENSe PROBe p SETup NAME 207 SENSe PROBe p SETup STATe 208 SENSe PROBe p SETup TYPE 208 SENSe PROBe p ID PART...

Page 207: ...he micro button on the probe head See also Microbutton Action on page 73 Suffix p 1 2 3 Selects the connector 1 Baseband Input I 2 Baseband Input Q 3 RF currently not supported use 1 with RF Input Connec tor setting Baseband Input I Parameters Mode RSINgle Run single starts one data acquisition NOACtion Nothing is started on pressing the micro button RST RSINgle Manual operation See Microbutton Ac...

Page 208: ...onnec tor setting Baseband Input I Return values State DETected NDETected RST NDETected Usage Query only SENSe PROBe p SETup TYPE Queries the type of the probe Suffix p 1 2 3 Selects the connector 1 Baseband Input I 2 Baseband Input Q 3 RF currently not supported use 1 with RF Input Connec tor setting Baseband Input I Return values Type String containing one of the following values None no probe d...

Page 209: ...e Select on page 82 SYSTem COMMunicate RDEVice PMETer COUNt This command queries the number of power sensors currently connected to the R S FSW Parameters NumberSensors Number of connected power sensors Example SYST COMM RDEV PMET COUN Usage Query only Manual operation See Select on page 82 SYSTem COMMunicate RDEVice PMETer p DEFine Placeholder Type Interface SerialNo This command assigns the powe...

Page 210: ...Z81 power sensor with the serial number 123456 is assigned to the Power Sensor 2 Manual operation See Select on page 82 Configuring Power Sensor Measurements CALibration PMETer p ZERO AUTO ONCE 210 CALCulate n PMETer p RELative MAGNitude 211 CALCulate n PMETer p RELative MAGNitude AUTO ONCE 211 CALCulate n PMETer p RELative STATe 212 FETCh PMETer p 212 READ PMETer p 212 SENSe PMETer p DCYCle STATe...

Page 211: ...mand defines the reference value for relative measurements Suffix p 1 4 Power sensor index Parameters RefValue Range 200 dBm to 200 dBm RST 0 Example CALC PMET2 REL 30 Sets the reference value for relative measurements to 30 dBm for power sensor 2 Manual operation See Reference Value on page 84 CALCulate n PMETer p RELative MAGNitude AUTO ONCE This command sets the current measurement result as th...

Page 212: ...mand queries the results of power sensor measurements Suffix p 1 4 Power sensor index Return values Level Power level that has been measured by a power sensor The unit is either dBm absolute measurements or dB relative measurements Usage Query only READ PMETer p This command initiates a power sensor measurement and queries the results Suffix p 1 4 Power sensor index Usage Query only SENSe PMETer p...

Page 213: ... STAT ON Activates the duty cycle correction PMET2 DCYC VAL 0 5 Sets the correction value to 0 5 Manual operation See Duty Cycle on page 84 SENSe PMETer p FREQuency Frequency This command defines the frequency of the power sensor Suffix p 1 4 Power sensor index Parameters Frequency The available value range is specified in the data sheet of the power sensor in use RST 50 MHz Example PMET2 FREQ 1GH...

Page 214: ...x Parameters Duration SHORt NORMal LONG RST NORMal Example PMET2 MTIM SHOR Sets a short measurement duration for measurements of station ary high power signals for the selected power sensor Manual operation See Meas Time Average on page 83 SENSe PMETer p MTIMe AVERage COUNt NumberReadings This command sets the number of power readings included in the averaging process of power sensor measurements ...

Page 215: ...ple PMET2 MTIM AVER ON Activates manual averaging Manual operation See Meas Time Average on page 83 SENSe PMETer p ROFFset STATe State This command includes or excludes the reference level offset of the analyzer for power sensor measurements Suffix p 1 4 Power sensor index Parameters State ON 1 Includes the reference level offset in the results OFF 0 Ignores the reference level offset RST 1 Exampl...

Page 216: ...sweep is complete Suffix p 1 4 Power sensor index Parameters State ON OFF RST OFF Example PMET1 UPD ON The data from power sensor 1 is updated continuously Manual operation See Continuous Value Update on page 82 UNIT n PMETer p POWer Unit This command selects the unit for absolute power sensor measurements Suffix p 1 4 Power sensor index Parameters Unit DBM WATT W RST DBM Example UNIT PMET POW DBM...

Page 217: ...iod that the input signal has to stay below the IF power trigger level before the measurement starts Suffix p 1 4 Power sensor index Parameters Time Range 0 s to 1 s Increment 100 ns RST 100 µs Example PMET2 TRIG DTIMe 0 001 SENSe PMETer p TRIGger HOLDoff Holdoff This command defines the trigger holdoff for external power triggers Suffix p 1 4 Power sensor index Parameters Holdoff Time period that...

Page 218: ... dB Example PMET2 TRIG HYST 10 Sets the hysteresis of the trigger to 10 dB Manual operation See Hysteresis on page 85 SENSe PMETer p TRIGger LEVel Level This command defines the trigger level for external power triggers This command requires the use of an R S NRP Z81 power sensor Suffix p 1 4 Power sensor index Parameters Level 20 to 20 dBm Range 20 dBm to 20 dBm RST 10 dBm Example PMET2 TRIG LEV ...

Page 219: ...peration See Using the power sensor as an external trigger on page 84 11 4 2 7 External Generator Control External generator control commands are available if the R S FSW External Genera tor Control option R S FSW B10 is installed For each measurement channel one external generator can be configured To switch between different configurations define multiple measurement channels For more informatio...

Page 220: ...ncy of the external generator output to the R S FSW Parameters State ON OFF 0 1 ON 1 Default setting a series of frequencies is defined one for each sweep point based on the current frequency at the RF input of the R S FSW the RF frequency range covers the currently defined span of the R S FSW unless limited by the range of the signal generator OFF 0 The generator uses a single fixed frequency def...

Page 221: ...n factor such that the frequency range of the generator is not exceeded if the following formula is applied to the start and stop frequency of the ana lyzer Offset r Denominato Numerator RF Freq Source Parameters Value numeric value RST 1 Example SOUR EXT FREQ NUM 4 SOUR EXT FREQ DEN 3 Sets a multiplication factor of 4 3 i e the transmit frequency of the generator is 4 3 times the analyzer frequen...

Page 222: ...ample SOUR EXT POW 30dBm Sets the generator level to 30 dBm Manual operation See Source Power on page 76 SOURce EXTernal STATe State This command activates or deactivates the connected external generator Parameters State ON OFF RST OFF Manual operation See Source State on page 76 SOURce POWer LEVel IMMediate OFFSet Offset This command defines a level offset for the external generator level Thus fo...

Page 223: ...eference signal must be connected to the rear panel of the instrument Parameters Source INTernal the internal reference is used EXTernal the external reference is used if none is available an error flag is displayed in the status bar RST INT Example SOUR EXT ROSC EXT Switches to external reference oscillator Manual operation See Reference on page 75 SYSTem COMMunicate GPIB RDEVice GENerator ADDRes...

Page 224: ...e SOURce EXTernal STATe on page 222 Parameters Type GPIB TTL GPIB GPIB connection without TTL synchronization for all generators of other manufacturers and some Rohde Schwarz devices TTL GPIB connection with TTL synchronization if available for most Rohde Schwarz devices RST GPIB Example SYST COMM RDEV GEN LINK TTL Selects GPIB TTL interface for generator operation Manual operation See TTL Handsha...

Page 225: ...lue assigned to the reference position in the grid For external generator calibration measurements requires External Generator Control option R S FSW B10 this command defines the power offset value assigned to the reference position Parameters Value RST 0 dBm coupled to reference level Example DISP TRAC Y RVAL 20dBm Sets the power value assigned to the reference position to 20 dBm Manual operation...

Page 226: ...ibrate Reflection Short on page 79 See Calibrate Reflection Open on page 79 SENSe CORRection METHod This command selects the type of measurement to be performed with the external gen erator This command is only available if external generator control is active see SOURce EXTernal STATe on page 222 Parameters REFLection Selects reflection measurements TRANsmission Selects transmission measurements ...

Page 227: ...ANsducer GENerator Name This command uses the normalized measurement data to generate a transducer factor with up to 1001 points The trace data is converted to a transducer with unit dB and stored in a file with the specified name and the suffix trd under c r_s instr trd The frequency points are allocated in equidistant steps between start and stop frequency The generated transducer factor can be ...

Page 228: ...chronization to optimize measurement speed SYST COMM RDEV GEN LINK TTL Activate the use of the external reference frequency at 10 MHz on the generator SOUR EXT ROSC EXT Configuring the calibration measurement Activate external generator control SOUR EXT STAT ON Set the generator output level to 10 dBm SOUR EXT POW 10DBM Set the frequency coupling to automatic SOUR EXT FREQ COUP STAT ON Configuring...

Page 229: ...ce results Retrieve the normalized power levels power offsets from calibration results Should be 0 for all sweep points directly after calibration SENS CORR STAT ON TRAC DATA TRACE1 Changing the display of the calibration results Shift the reference line so the 5 dB level is displayed in the center DISP TRAC Y SCAL RVAL 5DB DISP TRAC Y SCAL RPOS 50PCT 11 4 3 Configuring the Output Configuring trig...

Page 230: ...active time domain results can be selected Parameters WindowName string String containing the name of the window By default the name of a window is the same as its index To determine the name and index of all active windows use the LAYout CATalog WINDow query FOCus Dynamically switches to the currently selected window If a win dow is selected that does not contain a time domain result dis play the...

Page 231: ...AUTION To protect your hearing make sure that the volume setting is not too high before putting on the headphones If you do not hear output on the connected headphones despite having enabled both general online demod output OUTPut ADEMod ONLine STATe on page 230 and this command adjust the volume setting using the rotary knob on the front panel Parameters State ON OFF RST OFF Example OUTP ADEM PHO...

Page 232: ...nter Frequency on page 72 See Center frequency on page 93 SENSe FREQuency CENTer STEP StepSize This command defines the center frequency step size You can increase or decrease the center frequency quickly in fixed steps using the SENS FREQ UP AND SENS FREQ DOWN commands see SENSe FREQuency CENTer on page 231 Parameters StepSize fmax is specified in the data sheet Range 1 to fMAX RST 0 1 x span Def...

Page 233: ...ency CENTer STEP LINK FACTor Factor This command defines a step size factor if the center frequency step size is coupled to the span or the resolution bandwidth Parameters Factor 1 to 100 PCT RST 10 Example FREQ CENT STEP LINK FACT 20PCT Manual operation See Center Frequency Stepsize on page 93 11 4 5 Configuring the Vertical Axis Amplitude Scaling The following commands are required to configure ...

Page 234: ...RK2 FUNC REF Sets the reference level to the level of marker 2 Usage Event CALCulate n UNIT POWer Unit This command selects the unit of the y axis The unit applies to all measurement windows Parameters Unit DBM V A W DBPW WATT DBUV DBMV VOLT DBUA AMPere RST dBm Example CALC UNIT POW DBM Sets the power unit to dBm Manual operation See Unit on page 87 DISPlay WINDow n TRACe Y SCALe RLEVel ReferenceL...

Page 235: ...ttenuation manually it is no longer coupled to the reference level but the reference level is coupled to the attenuation Thus if the current reference level is not compatible with an attenuation that has been set manually the command also adjusts the reference level This function is not available if the Digital Baseband Interface R S FSW B17 is active Parameters Attenuation Range see data sheet In...

Page 236: ...been set manually the command also adjusts the reference level This command is only available with option R S FSW B25 It is not available if R S FSW B17 is active Parameters Attenuation attenuation in dB Range see data sheet Increment 1 dB RST 0 dB OFF Example INP EATT AUTO OFF INP EATT 10 dB Manual operation See Using Electronic Attenuation Option B25 on page 88 INPut EATT AUTO State This command...

Page 237: ... State This command turns the preamplifier on and off The command requires option R S FSW B24 This function is not available for input from the Digital Baseband Interface R S FSW B17 For R S FSW 26 or higher models the input signal is amplified by 30 dB if the pream plifier is activated For R S FSW 8 or 13 models the preamplification is defined by INPut GAIN VALue Parameters State ON OFF RST OFF E...

Page 238: ... MODE 238 DISPlay WINDow n TRACe Y SCALe RPOSition 239 DISPlay WINDow n TRACe Y SPACing 239 DISPlay WINDow n TRACe Y SCALe Range This command defines the display range of the y axis Parameters Range If the y axis shows the power the unit is dB with a range from 10 dB to 200 dB If the y axis shows the frequency the unit is Hz with a variable range RST 100 dB frequency domain 500 kHz time domain Exa...

Page 239: ...xis accordingly For measurements with the external generator R S FSW B10 the command defines the position of the reference value Parameters Position RST 100 PCT AF spectrum display 50 PCT time display Example DISP TRAC Y RPOS 50PCT Usage SCPI confirmed Manual operation See Reference Position on page 80 See Reference Value Position on page 118 See Ref Level Position on page 120 DISPlay WINDow n TRA...

Page 240: ...tails on the MSRA operating mode see the R S FSW MSRA User Manual For details on the MSRT operating mode see the R S FSW Realtime Spectrum Applica tion and MSRT Operating Mode User Manual SENSe ADEMod MTIMe 240 SENSe ADEMod RLENgth 240 SENSe ADEMod SET 241 SENSe ADEMod SPECtrum BANDwidth BWIDth RESolution 242 SENSe ADEMod SRATe 242 SENSe BANDwidth BWIDth DEMod 242 SENSe BANDwidth BWIDth DEMod TYPE...

Page 241: ...e RST 501 TriggerSource Selection of the trigger source to use for the demodulator For details on trigger sources see Trigger Source on page 95 IMMediate EXTernal EXT2 EXT3 IFPower RFPower AF AM AMRelative FM PM Note After selecting IF Power the trigger threshold can be set with the TRIGger SEQuence LEVel IFPower command RST IMMediate TriggerSlope POSitive NEGative Used slope of the trigger signal...

Page 242: ...et to its maximum and the resolution bandwidth is increased to the resulting band width This command is identical to SENS BAND RES see the R S FSW User Manual Parameters Bandwidth refer to data sheet RST 61 2 kHz Example ADEM SPEC BAND 61 2kHz Sets the resolution bandwidth to 61 2 kHz SENSe ADEMod SRATe This command returns the sample rate set up for the current analog demodulation measurement Exa...

Page 243: ...s the resolution bandwidth and decouples the resolution band width from the span For statistics measurements this command defines the demodulation bandwidth For measurements on I Q data in the frequency domain the maximum RBW is 1 MHz Parameters Bandwidth refer to data sheet RST RBW AUTO is set to ON DBW 3MHz Example BAND 1 MHz Sets the resolution bandwidth to 1 MHz Usage SCPI confirmed Manual ope...

Page 244: ...e 106 SENSe SWEep POINts SweepPoints This command defines the number of measurement points analyzed during a sweep Parameters SweepPoints Range 101 to 100001 RST 1001 Example SWE POIN 251 Usage SCPI confirmed Manual operation See Sweep Points on page 106 11 4 7 Triggering The following remote commands are required to configure a triggered measurement in a remote environment More details are descri...

Page 245: ... SEQuence BBPower HOLDoff Period This command defines the holding time before the baseband power trigger event The command requires the Digital Baseband Interface R S FSW B17 or the Ana log Baseband Interface R S FSW B71 Note that this command is maintained for compatibility reasons only Use the TRIGger SEQuence IFPower HOLDoff on page 246 command for new remote control programs Parameters Period ...

Page 246: ...e the next trigger event Note that this command can be used for any trigger source not just IF Power despite the legacy keyword Note If you perform gated measurements in combination with the IF Power trigger the R S FSW ignores the holding time for frequency sweep FFT sweep zero span and I Q data measurements Parameters Period Range 0 s to 10 s RST 0 s Example TRIG SOUR EXT Sets an external trigge...

Page 247: ...s ports 2 3 must be set for use as input using the OUTPut TRIGger port DIRection command Suffix port Selects the trigger port 1 trigger port 1 TRIGGER INPUT connector on front panel 2 trigger port 2 TRIGGER INPUT OUTPUT connector on front panel 3 trigger port 3 TRIGGER3 INPUT OUTPUT connector on rear panel Parameters TriggerLevel Range 0 5 V to 3 5 V RST 1 4 V Example TRIG LEV 2V Manual operation ...

Page 248: ...RFPower TriggerLevel This command defines the power level the RF input must exceed to cause a trigger event Note that any RF attenuation or preamplification is considered when the trigger level is analyzed If defined a reference level offset is also considered The input signal must be between 500 MHz and 8 GHz Parameters TriggerLevel For details on available trigger levels and trigger bandwidths s...

Page 249: ...l The command sets the level when FM modulated signals are used as trigger source For triggering to be successful the measurement time must cover at least 5 periods of the audio signal Parameters Level Range 10 to 10 RST 0 Hz Default unit MHz Example TRIG LEV FM 10 kHz Sets the FM trigger threshold to 10 kHz Manual operation See Trigger Level on page 98 TRIGger SEQuence LEVel PM Level The command ...

Page 250: ...ve Triggers when the signal drops to the trigger level falling edge RST POSitive Example TRIG SLOP NEG Manual operation See Slope on page 99 TRIGger SEQuence SOURce Source This command selects the trigger source For triggering with AF AM AMRelative FM and PM trigger sources to be successful the measurement time must cover at least 5 periods of the audio signal For details on trigger sources see Tr...

Page 251: ...le for input from the Digital Baseband Interface R S FSW B17 For input from the Analog Baseband Interface R S FSW B71 this parameter is interpreted as BBPower for compatibility reasons IQPower Magnitude of sampled I Q data For applications that process I Q data such as the I Q Analyzer or optional applications Not available for input from the Digital Baseband Interface R S FSW B17 or the Analog Ba...

Page 252: ...on page 97 RST IMMediate Example TRIG SOUR EXT Selects the external trigger input as source of the trigger signal Manual operation See Using the power sensor as an external trigger on page 84 See Trigger Source on page 95 See Free Run on page 95 See External Trigger 1 2 3 on page 95 See I Q Power on page 96 See IF Power on page 96 See Baseband Power on page 96 See Digital I Q on page 97 See FM AM ...

Page 253: ...command selects the trigger direction Suffix port Selects the trigger port to which the output is sent 2 trigger port 2 front 3 trigger port 3 rear Parameters Direction INPut Port works as an input OUTPut Port works as an output RST INPut Manual operation See Trigger 2 3 on page 100 OUTPut TRIGger port LEVel Level This command defines the level of the signal generated at the trigger output This co...

Page 254: ...ger event UDEFined Sends a user defined trigger signal For more information see OUTPut TRIGger port LEVel RST DEVice Manual operation See Output Type on page 100 OUTPut TRIGger port PULSe IMMediate This command generates a pulse at the trigger output Suffix port Selects the trigger port to which the output is sent 2 trigger port 2 front 3 trigger port 3 rear Usage Event Manual operation See Send T...

Page 255: ...define how the measurement is performed Useful commands described elsewhere chapter 11 4 8 2 Time Domain Zoom Settings on page 256 Basic demodulation commands SENSe ADEMod n AF COUPling 255 SENSe ADEMod PM RPOint X 255 SENSe ADEMod SQUelch STATe 256 SENSe ADEMod SQUelch LEVel 256 SENSe ADEMod n AF COUPling Coupling This command selects the coupling of the AF path of the analyzer in the specified w...

Page 256: ... Parameters State ON OFF RST OFF Example DEM SQU ON Signals below the level threshold are squelched Manual operation See Squelch State on page 108 SENSe ADEMod SQUelch LEVel Threshold This command defines the level threshold below which the demodulated data is set to 0 if squelching is enabled see SENSe ADEMod SQUelch STATe on page 256 Parameters Threshold numeric value The absolute threshold leve...

Page 257: ...OOM LENGth MODE Mode The command defines whether the length of the zoom area for the analog demodula ted measurement data is defined automatically or manually in the specified window Parameters Mode AUTO MAN AUTO Default The number of sweep points is used as the zoom length MAN The zoom length is defined manually using SENSe ADEMod n ZOOM LENGth RST AUTO Example ADEM ZOOM LENG MODE MAN Zoom functi...

Page 258: ...on page 257 If the zoom function is disabled data reduction is used to adapt the measruement points to the number of points available on the display Parameters State ON OFF RST OFF Example ADEM ZOOM ON Switches on the zoom function Manual operation See State on page 109 11 4 8 3 Configuring the Demodulation Spectrum The demodulation spectrum defines which span of the demodulated data is evaluated ...

Page 259: ... spectrum result display The maximum span corresponds to DBW 2 see SENSe BANDwidth BWIDth DEMod on page 242 Example ADEM BAND 5 MHz Sets the demodulation bandwidth to 5 MHz ADEM AF SPAN FULL Sets the AF span to 2 5 MHz Manual operation See AF Full Span on page 112 SENSe ADEMod AF STARt Frequency This command sets the start frequency for AF spectrum result display Parameters Frequency RST 0 MHz Exa...

Page 260: ... SENSe ADEMod SPECtrum SPAN MAXimum 260 SENSe ADEMod SPEC SPAN ZOOM Span This command sets the span around the center frequency for RF spectrum result dis play The span is limited to the demodulation bandwidth see SENSe BANDwidth BWIDth DEMod on page 242 Parameters Span RST 5 MHz Example ADEM SPEC SPAN ZOOM 200 kHz Sets the rF span to 200 kHz Manual operation See Span on page 112 SENSe ADEMod SPEC...

Page 261: ...4 SENSe FILTer n LPASs FREQuency ABSolute 264 SENSe FILTer n LPASs FREQuency MANual 264 SENSe FILTer n LPASs FREQuency RELative 264 SENSe FILTer n LPASs STATe 265 SENSe FILTer n AWEighted STATe State This command activates deactivates the A weighting filter for the specified evalua tion For details on weighting filters see Weighting on page 115 Parameters State ON OFF RST OFF Example FILT AWE ON A...

Page 262: ...eration See Weighting on page 115 SENSe FILTer n CCIT State This command activates deactivates the CCITT CCITT P 53 weighting filter for the specified evaluation For details on weighting filters see Weighting on page 115 Parameters State ON OFF RST OFF Example FILT CCIT ON Activates the CCITT weighting filter Manual operation See Weighting on page 115 SENSe FILTer n DEMPhasis TCONstant This comman...

Page 263: ...r the specified evaluation For details on the high pass filters refer to High Pass on page 114 Parameters FilterType 20 Hz 50 Hz 300 Hz RST 300Hz Default unit Hz Example FILT HPAS FREQ 300Hz Selects the high pass filter for the demodulation bandwidth range from 800 Hz to 8 MHz Manual operation See High Pass on page 114 SENSe FILTer n HPASs FREQuency MANual Frequency This command selects the cutoff...

Page 264: ...s FilterType 3kHz 15kHz 150kHz RST 15kHz Example FILT LPAS FREQ 150kHz Selects the low pass filter for the demodulation bandwidth range from 400 kHz to 16 MHz Manual operation See Low Pass on page 114 SENSe FILTer n LPASs FREQuency MANual Frequency This command selects the cutoff frequency of the low pass filter for the specified evalu ation For details on the low pass filter refer to Low Pass on ...

Page 265: ... Manual operation See Low Pass on page 114 11 4 8 5 Defining the Scaling and Units The scaling parameters define the range of the demodulated data to be displayed 11 4 8 6 Scaling for AF Evaluation These settings are only available for AF evaluations Useful commands described elsewhere SENSe ADJust SCALe Y AUTO CONTinuous on page 269 SENSe ADEMod n AF COUPling on page 255 DISPlay WINDow n TRACe Y ...

Page 266: ... SCALe RPOSition on page 239 DISPlay WINDow n TRACe Y SPACing on page 239 DISPlay WINDow n TRACe Y SCALe on page 238 DISPlay WINDow n TRACe Y SCALe MODE on page 238 11 4 8 8 Units The units define how the demodulated data is displayed UNIT ANGLe 266 UNIT THD 266 UNIT ANGLe Unit This command selects the unit for angles for PM display This command is identical to CALC UNIT ANGL Parameters Unit DEG R...

Page 267: ...OWer 268 SENSe ADJust CONFigure HYSTeresis UPPer 269 SENSe ADJust LEVel 269 SENSe ADJust SCALe Y AUTO CONTinuous 269 SENSe ADJust ALL This command initiates a measurement to determine and set the ideal settings for the current task automatically only once for the current measurement This includes Center frequency Reference level Scaling Example ADJ ALL Usage Event Manual operation See Adjusting al...

Page 268: ...st CONFigure DURation on page 267 RST AUTO Manual operation See Resetting the Automatic Measurement Time Meastime Auto on page 127 See Changing the Automatic Measurement Time Meastime Manual on page 127 SENSe ADJust FREQuency This command sets the center frequency to the highest signal level in the current fre quency range Example ADJ FREQ Usage Event Manual operation See Adjusting the Center Freq...

Page 269: ...0 dB to 200 dB RST 1 dB Default unit dB Example SENS ADJ CONF HYST UPP 2 Example For an input signal level of currently 20 dBm the reference level will only be adjusted when the signal level rises above 22 dBm Manual operation See Upper Level Hysteresis on page 127 SENSe ADJust LEVel This command initiates a single internal measurement that evaluates and sets the ideal reference level for the curr...

Page 270: ...od AM RELative AFSPectrum TYPE 272 SENSe ADEMod FM TDOMain TYPE 272 SENSe ADEMod FM AFSPectrum TYPE 272 SENSe ADEMod PM TDOMain TYPE 272 SENSe ADEMod PM AFSPectrum TYPE 273 SENSe ADEMod SPECtrum TYPE 273 SENSe AVERage COUNt 274 SENSe AVERage n STATe t 275 SENSe AVERage n TYPE 275 SENSe WINDow n DETector trace FUNCtion 275 SENSe WINDow n DETector t FUNCtion AUTO 276 DISPlay WINDow n TRACe t MODE Mo...

Page 271: ...ce memory only if the new value is lower than the previous one VIEW The current contents of the trace memory are frozen and dis played BLANk Hides the selected trace RST Trace 1 WRITe Trace 2 6 BLANk Example INIT CONT OFF Switching to single sweep mode SWE COUN 16 Sets the number of measurements to 16 DISP TRAC3 MODE WRIT Selects clear write mode for trace 3 INIT WAI Starts the measurement and wai...

Page 272: ...er of the currently selected trace in the window specified by the index n trace index is ignored Traces can only be queried for graphical result displays not Result Summary Marker Table or Peak Marker List Return values TraceNo Number of the currently selected trace Example DISP TRAC3 SEL Usage SCPI confirmed DISPlay WINDow n TRACe t STATe State This command turns a trace on and off The measuremen...

Page 273: ...ed identically for all windows with a specific evaluation The following table indicates which command syntax refers to which evaluation method Command syntax Evaluation method AM ABSolute TDOMain RF time domain AM RELative TDOMain AM time domain AM RELative AFSPectrum AM spectrum FM TDOMain FM time domain FM AFSPectrum FM spectrum PM TDOMain PM time domain PM AFSPectrum PM spectrum SPECtrum RF spe...

Page 274: ...cted trace RST WRITe OFF OFF OFF OFF OFF Example ADEM AM AVER MAXH MINH OFF OFF OFF Determines average max hold and min hold values simultane ously for the traces 1 3 of the RF time domain evaluation ADEM AM WRIT OFF OFF OFF OFF OFF Determines only the current measurement values for trace 1 ADEM AM OFF OFF OFF OFF OFF OFF Switches AM demodulation off SENSe AVERage COUNt AverageCount This command d...

Page 275: ... selects the trace averaging mode Parameters Mode VIDeo The logarithmic power values are averaged LINear The power values are averaged before they are converted to logarithmic values POWer The power level values are converted into unit Watt prior to averaging After the averaging the data is converted back into its original unit RST VIDeo Example AVER TYPE LIN Switches to linear average calculation...

Page 276: ...erage CISPR Average CISPR filter only CRMS CISPR RMS CISPR filter only RST APEak I Q Analyzer RMS Example DET POS Sets the detector to positive peak Manual operation See Detector on page 131 SENSe WINDow n DETector t FUNCtion AUTO State This command couples and decouples the detector to the trace mode Parameters State ON OFF 0 1 RST 1 Example DET AUTO OFF The selection of the detector is not coupl...

Page 277: ... the measure ment has been aborted successfully use the OPC or WAI command after ABOR and before the next command For details see the Remote Basics chapter in the R S FSW User Manual To abort a sequence of measurements by the Sequencer use the INITiate SEQuencer ABORt on page 280 command Note on blocked remote control programs If a sequential command cannot be completed for example because a trigg...

Page 278: ...functions Manual operation See Continue Single Sweep on page 105 INITiate CONTinuous State This command controls the sweep mode Note that in single sweep mode you can synchronize to the end of the measurement with OPC OPC or WAI In continuous sweep mode synchronization to the end of the measurement is not possible Thus it is not recommended that you use continuous sweep mode in remote control as r...

Page 279: ...e R S FSW User Manual Manual operation See Single Sweep RUN SINGLE on page 104 INITiate REFResh This function is only available if the Sequencer is deactivated SYSTem SEQuencer SYST SEQ OFF and only for applications in MSRA MSRT mode not the MSRA MSRT Master The data in the capture buffer is re evaluated by the currently active application only The results for any other applications remain unchang...

Page 280: ...cer must be activated see SYSTem SEQuencer on page 281 Example SYST SEQ ON Activates the Sequencer INIT SEQ MODE SING Sets single sequence mode so each active measurement will be performed once INIT SEQ IMM Starts the sequential measurements Usage Event INITiate SEQuencer MODE Mode This command selects the way the R S FSW application performs measurements sequentially Before this command can be ex...

Page 281: ...uence mode so each active measurement will be performed once INIT SEQ IMM Starts the sequential measurements INITiate SEQuencer REFResh ALL This function is only available if the Sequencer is deactivated SYSTem SEQuencer SYST SEQ OFF and only in MSRA or MSRT mode The data in the capture buffer is re evaluated by all active MSRA MSRT applications Example SYST SEQ OFF Deactivates the scheduler INIT ...

Page 282: ...rmed once INIT SEQ IMM Starts the sequential measurements SYST SEQ OFF 11 6 Configuring the Result Display The following remote commands are required to configure the screen display in a remote environment General Window Commands 282 Working with Windows in the Display 283 11 6 1 General Window Commands The following commands are required to configure general window layout independent of the appli...

Page 283: ...than one measurement window was displayed originally these are visible again RST SMALl Example DISP WIND2 LARG 11 6 2 Working with Windows in the Display The following commands are required to change the evaluation type and rearrange the screen layout for a measurement channel as you do using the SmartGrid in manual operation Since the available evaluation types depend on the selected application ...

Page 284: ...s added relative to the existing win dow WindowType text value Type of result display evaluation method you want to add See the table below for available parameter values Return values NewWindowName When adding a new window the command returns its name by default the same as its number as a result Example LAY ADD 1 LEFT MTAB Result 2 Adds a new window named 2 with a marker table to the left of win...

Page 285: ... This command queries the name and index of all active windows from top left to bot tom right The result is a comma separated list of values for each window with the syn tax WindowName_1 WindowIndex_1 WindowName_n WindowIndex_n Return values WindowName string Name of the window In the default state the name of the window is its index WindowIndex numeric value Index of the window Example LAY CAT Re...

Page 286: ...By default the name of a window is the same as its index To determine the name and index of all active windows use the LAYout CATalog WINDow query WindowType Type of result display you want to use in the existing window See LAYout ADD WINDow on page 284 for a list of availa ble window types Example LAY REPL WIND 1 MTAB Replaces the result display in window 1 with a marker table LAYout SPLitter Ind...

Page 287: ...en See figure 11 1 The direction in which the splitter is moved depends on the screen layout If the windows are positioned horizontally the splitter also moves horizontally If the windows are positioned vertically the splitter also moves vertically Range 0 to 100 Example LAY SPL 1 3 50 Moves the splitter between window 1 Frequency Sweep and 3 Marker Table to the center 50 of the screen i e in the ...

Page 288: ...Yout ADD WINDow on page 284 for a list of availa ble window types Return values NewWindowName When adding a new window the command returns its name by default the same as its number as a result Example LAY WIND1 ADD LEFT MTAB Result 2 Adds a new window named 2 with a marker table to the left of window 1 Usage Query only LAYout WINDow n IDENtify This command queries the name of a particular display...

Page 289: ...n application when you configure the traces for a window with a specific evaluation e g AM time domain the traces in all windows with the same evaluation are configured identically Specific commands Retrieving Trace Results 289 Exporting Trace Results 292 Retrieving Result Summary Values 294 Formats for Returned Values ASCII Format and Binary Format 297 Reference ASCII File Export Format 297 11 7 ...

Page 290: ...h evaluation method as well as the output unit of the results Command syntax Evaluation method Output unit AM ABSolute TDOMain RF time domain dBm AM RELative TDOMain AM time domain AM RELative AFSPectrum AM spectrum FM TDOMain FM time domain kHz FM AFSPectrum FM spectrum kHz PM TDOMain PM time domain rad or PM AFSPectrum PM spectrum rad or SPECtrum RF spectrum dBm logarithmic display or V linear d...

Page 291: ...Spectrum application the format setting REAL is used for the binary transmission of trace data For I Q data 8 bytes per sample are returned for this format set ting RST ASCII Example FORM REAL 32 Usage SCPI confirmed TRACe n DATA This command queries current trace data and measurement results The data format depends on FORMat DATA Query parameters ResultType Selects the type of result to be return...

Page 292: ... occur although the hard disk indicates that storage space is still available To store data permanently select an external storage location such as a USB memory device For details see Protecting Data Using the Secure User Mode in the Data Manage ment section of the R S FSW User Manual Parameters Trace Number of the trace to be stored This parameter is ignored if the option Export all Traces and al...

Page 293: ...races and tables is exported See chapter 11 7 5 Reference ASCII File Export Format on page 297 for details Parameters State ON OFF 0 1 RST 1 Usage SCPI confirmed Manual operation See Include Instrument Measurement Settings on page 133 FORMat DEXPort TRACes Selection This command selects the data to be included in a data export file see MMEMory STORe n TRACe on page 292 Parameters Selection SINGle ...

Page 294: ...SENSe ADEMod FM OFFSet 296 SENSe ADEMod PM RPOint X 297 CALCulate n MARKer FUNCtion ADEMod AFRequency RESult This command queries the modulation audio frequency for the demodulation method in the selected window Parameters ModFreq Modulation frequency in Hz Usage Query only CALCulate MARKer FUNCtion ADEMod AM RESult t MeasType CALCulate MARKer FUNCtion ADEMod FM RESult t MeasType CALCulate MARKer ...

Page 295: ...asurement data CLR WRITE The modulation is removed using low pass filtering The offset thus determined differs from that calculated in the SENSe ADEMod FM OFFSet command which uses averaging to determine the frequency deviation Return values CarrOffset The deviation of the calculated carrier frequency to the ideal car rier frequency in Hz Usage Query only CALCulate n MARKer FUNCtion ADEMod SINad R...

Page 296: ...ults that are different from those obtained by averaging Query parameters ResultType IMMediate AVERage IMMediate The current measurement results are used to calculate the FM offset AVERage The measurement results that were averaged over the given number of measurements are used to calculate the FM offset If no average measurement was active during the last measure ment sequence only the SENSe ADEM...

Page 297: ... ues in floating point format Binary Format FORMat REAL 32 The data is stored as binary data Definite Length Block Data according to IEEE 488 2 each measurement value being formatted in 32 Bit IEEE 754 Floating Point Format The schema of the result string is as follows 41024 value1 value2 value n with 4 number of digits 4 in the example of the following number of data bytes 1024 number of followin...

Page 298: ... see Decimal Separator on page 134 Table 11 4 ASCII file format for trace export File contents Description Header data Type R S FSW Instrument model Version 5 00 Firmware version Date 01 Oct 2006 Date of data set storage Mode ANALYZER Operating mode Preamplifier OFF Preamplifier status Transducer OFF Transducer status Center Freq 55000 Hz Center frequency Freq Offset 0 Hz Frequency offset Start 10...

Page 299: ... Values 1001 Number of measurement points 10000 10 3 15 7 10130 11 5 16 9 10360 12 0 17 4 Measured values x value y1 y2 y2 being available only with detector AUTOPEAK and containing in this case the smallest of the two measured values for a measurement point Data section for individual trace Trace 2 Next trace in same window Data section for individual window Window 2 Name of next window Data sect...

Page 300: ... Configuring Special Marker Functions 312 11 8 1 1 Setting Up Individual Markers The following commands define the position of markers in the diagram CALCulate n MARKer m AOFF 300 CALCulate n MARKer m1 LINK TO MARKer m2 301 CALCulate n MARKer m STATe 301 CALCulate n MARKer m TRACe 301 CALCulate n MARKer m X 301 CALCulate n MARKer m Y 302 CALCulate n DELTamarker AOFF 303 CALCulate n DELTamarker m L...

Page 301: ...s cur rently active as a deltamarker it is turned into a normal marker Parameters State ON OFF RST OFF Example CALC MARK3 ON Switches on marker 3 Manual operation See Marker State on page 136 See Marker Type on page 136 CALCulate n MARKer m TRACe Trace This command selects the trace the marker is positioned on Note that the corresponding trace must have a trace mode other than Blank If necessary t...

Page 302: ...e y axis If necessary the command activates the marker first To get a valid result you have to perform a complete measurement with synchroniza tion to the end of the measurement before reading out the result This is only possible for single sweeps See also INITiate CONTinuous on page 278 If the analog demodulator option Analog Demodulation R S FSW K7 is activated the query result is output in the ...

Page 303: ...al operation See Linking to Another Marker on page 136 CALCulate n DELTamarker m1 LINK TO MARKer m2 State This command links delta marker m1 to any active normal marker m2 If you change the horizontal position of marker m2 delta marker m1 changes its horizontal position to the same value Parameters State ON OFF RST OFF Example CALC DELT4 LINK TO MARK2 ON Links the delta marker 4 to the marker 2 Ma...

Page 304: ... fixed reference as the reference Example CALC DELT3 MREF 2 Specifies that the values of delta marker 3 are relative to marker 2 Manual operation See Reference Marker on page 136 CALCulate n DELTamarker m STATe State This command turns delta markers on and off If necessary the command activates the delta marker first No suffix at DELTamarker turns on delta marker 1 Parameters State ON OFF RST OFF ...

Page 305: ...ure ment and scale of the x axis Example CALC DELT X Outputs the absolute x value of delta marker 1 Manual operation See Marker Position X value on page 136 CALCulate n DELTamarker m X RELative This command queries the relative position of a delta marker on the x axis If necessary the command activates the delta marker first Return values Position Position of the delta marker in relation to the re...

Page 306: ... the reference marker or the fixed reference Example INIT CONT OFF Switches to single sweep mode INIT WAI Starts a sweep and waits for its end CALC DELT2 ON Switches on delta marker 2 CALC DELT2 Y Outputs measurement value of delta marker 2 Usage Query only 11 8 1 2 General Marker Settings The following commands control general marker functionality See also Fixed Reference Marker Settings on page ...

Page 307: ...PECtrum BOTH NONE TIME Links the markers in all time domain diagrams SPECtrum Links the markers in all AF Spectrum displays BOTH Links the markers both in the time domain diagrams and in the AF Spectrum displays NONE Markers are not linked RST NONE Manual operation See Link Time Marker on page 139 See Link AF Spectrum Marker on page 139 DISPlay MTABle DisplayMode This command turns the marker tabl...

Page 308: ... maximum that must be attained before a new maximum is recognized or the distance to a trace minimum that must be attained before a new minimum is recognized RST 5 PCT in AM displays 50 kHz in FM displays 0 5 RAD in PM displays Example CALC MARK PEXC 10dB Defines peak excursion as 10 dB Manual operation See Peak Excursion on page 140 11 8 1 4 Positioning the Marker The following remote commands ar...

Page 309: ...de for Next Peak on page 140 See Search Next Peak on page 141 CALCulate n MARKer m MAXimum PEAK This command moves a marker to the highest level If the marker is not yet active the command first activates the marker Usage Event Manual operation See Peak Search on page 141 CALCulate n MARKer m MAXimum RIGHt This command moves a marker to the next lower peak The search includes only measurement valu...

Page 310: ...t values to the right of the current marker posi tion Usage Event Manual operation See Search Mode for Next Peak on page 140 Positioning Delta Markers The following commands position delta markers on the trace CALCulate n DELTamarker m MAXimum LEFT 310 CALCulate n DELTamarker m MAXimum NEXT 311 CALCulate n DELTamarker m MAXimum PEAK 311 CALCulate n DELTamarker m MAXimum RIGHt 311 CALCulate n DELTa...

Page 311: ...The search includes only measurement values to the right of the current marker posi tion Usage Event Manual operation See Search Mode for Next Peak on page 140 CALCulate n DELTamarker m MINimum LEFT This command moves a delta marker to the next higher minimum value The search includes only measurement values to the right of the current marker posi tion Usage Event Manual operation See Search Mode ...

Page 312: ...er Settings The following commands configure a fixed reference marker CALCulate n DELTamarker m FUNCtion FIXed RPOint MAXimum PEAK 312 CALCulate n DELTamarker m FUNCtion FIXed RPOint X 312 CALCulate n DELTamarker m FUNCtion FIXed RPOint Y 313 CALCulate n DELTamarker m FUNCtion FIXed RPOint Y OFFSet 313 CALCulate n DELTamarker m FUNCtion FIXed STATe 313 CALCulate n DELTamarker m FUNCtion FIXed RPOi...

Page 313: ...vertical position of the reference The unit and value range is variable RST Fixed Reference OFF Example CALC DELT FUNC FIX RPO Y 10dBm Sets the reference point level for delta markers to 10 dBm Manual operation See Defining a Fixed Reference on page 138 See Defining a Reference Point on page 144 CALCulate n DELTamarker m FUNCtion FIXed RPOint Y OFFSet Offset This command defines a level offset for...

Page 314: ...ATe 314 CALCulate MARKer FUNCtion FPEaks COUNt 314 CALCulate n MARKer m FUNCtion FPEaks IMMediate 315 CALCulate n MARKer m FUNCtion FPEaks LIST SIZE 315 CALCulate n MARKer m FUNCtion FPEaks SORT 315 CALCulate n MARKer m FUNCtion FPEaks STAT 316 CALCulate MARKer FUNCtion FPEeaks X 316 CALCulate MARKer FUNCtion FPEeaks Y 316 MMEMory STORe LIST 317 MMEMory STORe PEAK 317 CALCulate n MARKer m FUNCtion...

Page 315: ...rsion you have set with CALCulate n MARKer PEXCursion Range 1 to 200 Example CALC MARK PEXC 5 Defines a peak excursion of 5 dB i e peaks must be at least 5 dB apart to be detected as a peak CALC MARK FUNC FPE 10 Initiates a search for 10 peaks on the current trace CALCulate n MARKer m FUNCtion FPEaks LIST SIZE MaxNoPeaks This command defines the maximum number of peaks that the R S FSW looks for d...

Page 316: ... ON Activates marker peak search Manual operation See Peak List State on page 146 CALCulate MARKer FUNCtion FPEeaks X This command queries the position of the peaks on the x axis The order depends on the sort order that has been set with CALCulate n MARKer m FUNCtion FPEaks SORT Return values PeakPosition Position of the peaks on the x axis The unit depends on the measurement Usage Query only CALC...

Page 317: ...le MMEM STOR LIST test Stores the current list evaluation results in the test dat file MMEMory STORe PEAK FileName This command exports the marker peak list to a file The file format is dat Secure User Mode In secure user mode settings that are to be stored on the instrument are stored to vol atile memory which is restricted to 256 MB Thus a Memory full error may occur although the hard disk indic...

Page 318: ...mple CALC MARK FUNC NDBD 3dB Sets the distance to the reference marker to 3 dB CALCulate n MARKer m FUNCtion NDBDown FREQuency This command queries the position of the n dB down markers on the x axis when measuring in the frequency domain To get a valid result you have to perform a complete measurement with synchroniza tion to the end of the measurement before reading out the result This is only p...

Page 319: ...e 278 Return values Distance The result depends on the span In case of frequency domain measurements the command returns the bandwidth between the two n dB down markers in Hz In case of time domain measurements the command returns the pulse width between the two n dB down markers in seconds Example INIT CONT OFF Switches to single sweep mode CALC MARK FUNC NDBD ON Switches on the n dB down functio...

Page 320: ... FUNC NDBD ON Switches on the n dB down function INIT WAI Starts a sweep and waits for the end CALC MARK FUNC NDBD TIME Outputs the time values of the temporary markers Usage Query only Manual operation See n dB down Delta Value on page 145 Phase Noise Measurement Marker The following commands control the phase noise measurement marker function Useful commands for phase noise markers described els...

Page 321: ...Phase Noise Measurement State on page 144 CALCulate n DELTamarker m FUNCtion PNOise STATe State This command turns the phase noise measurement at the delta marker position on and off The reference marker for phase noise measurements is either a normal marker or a fixed reference If necessary the command turns on the reference marker The correction values for the bandwidth and the log amplifier are...

Page 322: ...Culate LIMit k CONTrol OFFSet 323 CALCulate LIMit k CONTrol SHIFt 324 CALCulate LIMit k CONTrol SPACing 324 CALCulate LIMit k LOWer DATA 324 CALCulate LIMit k LOWer MARGin 325 CALCulate LIMit k LOWer MODE 325 CALCulate LIMit k LOWer OFFSet 325 CALCulate LIMit k LOWer SHIFt 325 CALCulate LIMit k LOWer SPACing 326 CALCulate LIMit k LOWer STATe 326 CALCulate LIMit k LOWer THReshold 326 CALCulate LIMi...

Page 323: ...ation See Data points on page 152 CALCulate LIMit k CONTrol DOMain SpanSetting This command selects the domain of the limit line Parameters SpanSetting FREQuency TIME RST FREQuency Manual operation See X Axis on page 152 CALCulate LIMit k CONTrol MODE Mode This command selects the horizontal limit line scaling Parameters Mode ABSolute Limit line is defined by absolute physical values Hz or s RELat...

Page 324: ...ACing InterpolMode This command selects linear or logarithmic interpolation for the calculation of limit lines from one horizontal point to the next Parameters InterpolMode LINear LOGarithmic RST LIN Example CALC LIM CONT SPAC LIN CALCulate LIMit k LOWer DATA LimitLinePoints This command defines the vertical definition points of a lower limit line Parameters LimitLinePoints Variable number of leve...

Page 325: ...tive values related to the reference level dB RST ABSolute Manual operation See X Axis on page 152 CALCulate LIMit k LOWer OFFSet Offset This command defines an offset for a complete lower limit line Compared to shifting the limit line an offset does not actually change the limit line defi nition points Parameters Offset Numeric value RST 0 Default unit dB Manual operation See Y Offset on page 149...

Page 326: ...command you have to select a limit line with CALCulate LIMit k NAME on page 326 Parameters State ON OFF RST OFF Usage SCPI confirmed Manual operation See Visibility on page 149 CALCulate LIMit k LOWer THReshold Threshold This command defines a threshold for relative limit lines The R S FSW uses the threshold for the limit check if the limit line violates the thresh old Parameters Threshold Numeric...

Page 327: ...ts Variable number of level values Note that the number of vertical values has to be the same as the number of horizontal values set with CALCulate LIMit k CONTrol DATA If not the R S FSW either adds missing values or ignores surplus values The unit depends on CALCulate LIMit k UNIT on page 327 RST Limit line state is OFF Usage SCPI confirmed Manual operation See Data points on page 152 CALCulate ...

Page 328: ...RST 0 Default unit dB Manual operation See Y Offset on page 149 CALCulate LIMit k UPPer SHIFt Distance This command moves a complete upper limit line vertically Compared to defining an offset this command actually changes the limit line definition points by the value you define Parameters Distance Defines the distance that the limit line moves The unit depends on CALCulate LIMit k UNIT on page 327...

Page 329: ...The R S FSW uses the threshold for the limit check if the limit line violates the thresh old Parameters Limit Numeric value The unit depends on CALCulate LIMit k UNIT on page 327 RST 200 Default unit dBm Manual operation See Threshold on page 151 11 8 2 2 Managing Limit Lines Useful commands for managing limit lines described in the R S FSW User Manual MMEM SEL ITEM LIN ALL MMEM STOR TYPE MMEM LOA...

Page 330: ... line 2 CALC LIM1 COPY FM2 Copies limit line 1 to a new line named FM2 Manual operation See Copy Line on page 150 CALCulate LIMit k DELete This command deletes a limit line Usage Event Manual operation See Delete Line on page 150 CALCulate LIMit k STATe State This command turns the limit check for a specific limit line on and off To query the limit check result use CALCulate LIMit k FAIL Note that...

Page 331: ...check for limit line 3 on trace 2 Manual operation See Traces to be Checked on page 149 11 8 2 3 Checking the Results of a Limit Check CALCulate LIMit CLEar IMMediate 331 CALCulate LIMit k FAIL 331 CALCulate LIMit CLEar IMMediate This command deletes the result of the current limit check The command works on all limit lines in all measurement windows at the same time Example CALC LIM CLE Deletes t...

Page 332: ...limit lines CALC LIM1 NAME FM1 Names limit line 1 FM1 CALC LIM1 CONT MODE ABS Selects absolute scaling for the horizontal axis CALC LIM1 CONT 1 MHz 50MHz 100 MHz 150MHz 200MHz Defines 5 horizontal definition points for limit line 1 CALC LIM1 UPP MODE ABS Selects an absolute vertical scale for limit line 1 CALC LIM1 UNIT DBM Selects the unit dBm for limit line 1 CALC LIM1 UPP 10 5 0 5 10 Defines 5 ...

Page 333: ...EL CHAN LIN ALL ON MMEM STOR TYPE CHAN MMEM STOR STAT 1 LimitLines_FM1_FM3 Example Performing a Limit Check This example demonstrates how to perform a limit check during a basic frequency sweep measurement in a remote environment The limit lines configured in Example Configuring Limit Lines on page 332 are assumed to exist and be active Preparing the instrument RST Resets the instrument INIT CONT ...

Page 334: ... CALC LIM1 TRAC3 CHEC ON Activates the upper limit to be checked against trace3 maxhold trace CALC LIM3 TRAC2 CHEC ON Activates the upper limit to be checked against trace2 average trace CALC LIM CLE Clears the previous limit check results Performing the measurement INIT WAI Initiates a new measurement and waits until the last sweep has finished Retrieving limit check results CALC LIM1 FAIL Querie...

Page 335: ...nit PCT Manual operation See Single Zoom on page 153 DISPlay WINDow n ZOOM STATe State This command turns the zoom on and off Parameters State ON OFF RST OFF Example DISP ZOOM ON Activates the zoom mode Manual operation See Single Zoom on page 153 See Restore Original Display on page 154 See Deactivating Zoom Selection mode on page 154 11 8 3 2 Using the Multiple Zoom DISPlay WINDow n ZOOM MULTipl...

Page 336: ...page 153 DISPlay WINDow n ZOOM MULTiple zoom STATe State This command turns the mutliple zoom on and off Suffix zoom 1 4 Selects the zoom window If you turn off one of the zoom windows all subsequent zoom windows move up one position Parameters State ON OFF RST OFF Manual operation See Multiple Zoom on page 153 See Restore Original Display on page 154 See Deactivating Zoom Selection mode on page 1...

Page 337: ...lable for MSRA application channels CALCulate MSRA ALINe SHOW 337 CALCulate MSRA ALINe VALue 337 CALCulate MSRA WINDow n IVAL 338 SENSe MSRA CAPTure OFFSet 338 CALCulate MSRA ALINe SHOW This command defines whether or not the analysis line is displayed in all time based windows in all MSRA applications and the MSRA Master Note even if the analysis line display is off the indication whether or not ...

Page 338: ... 0 to Record length RST 0 Manual operation See Capture Offset on page 103 11 8 5 Configuring an Analysis Interval and Line MSRT mode only In MSRT operating mode only the MSRT Master actually captures data the MSRT applications define an extract of the captured data for analysis referred to as the analysis interval The analysis line is a common time marker for all MSRT applica tions For the Analog ...

Page 339: ...mmand defines the position of the analysis line for all time based windows in all MSRT applications and the MSRT Master Parameters Position Position of the analysis line in seconds The position must lie within the measurement time pretrigger posttrigger of the MSRT measurement Default unit s Manual operation See Position on page 155 CALCulate RTMS WINDow n IVAL This command queries the analysis in...

Page 340: ... the evaluated I Q data from the Analog Demodulation application can be exported for further analysis in exter nal applications For details on importing and exporting I Q data see chapter 7 I Q Data Import and Export on page 156 MMEMory LOAD IQ STATe 340 MMEMory STORe IQ COMMent 340 MMEMory STORe IQ STATe 341 MMEMory LOAD IQ STATe 1 FileName This command restores I Q data from a file Parameters Fi...

Page 341: ...ment section of the R S FSW User Manual Parameters 1 FileName String containing the path and name of the target file Example MMEM STOR IQ STAT 1 C R_S Instr user data iq tar Stores the captured I Q data to the specified file Manual operation See I Q Export on page 157 11 10 Commands for Compatibility The following commands are provided for compatibility to other signal analyzers only For new remot...

Page 342: ...ectrum XTIM PM PM Time Domain XTIM PM AFSPectrum PM Spectrum XTIM SPECtrum RF Spectrum XTIM AM XTIM RFPower RF Time Domain RF power XTIM AMSummary XTIM AMSummary RELative XTIM FMSummary XTIM FMSummary RELative XTIM PMSummary XTIM PMSummary RELative XTIM SUMMary Result summary 11 11 Programming Example In this example we will configure and perform an analog demodulation measurement to demonstrate t...

Page 343: ...ne FM trigger TRIG LEV FM 500MHz Trigger when signal reaches 500 MHz Configuring the result display LAY ADD WIND 1 BEL XTIM FM AFSP Add an FM Spectrum result display below FM Time Domain ADEM FM AFSP WRIT AVER OFF OFF OFF OFF Defines two traces in the FM Spectrum 1 Clear write 2 average ADEM SET 8MHz 32000 FM POS 500 30 Set analog demodulator to execute 30 sweeps with 32000 samples each at a sampl...

Page 344: ...Result 649 07 Hz ADEM FM OFFS AVER Queries FM carrier offset averaged over 30 measurements Result 600 Hz TRAC DATA TRACE1 Retrieve the trace data of the most recent measurement trace 1 Result 1 201362252 1 173495054 1 187217355 1 186594367 1 171583891 1 188250422 1 204138160 1 181404829 1 186317205 1 197872400 TRAC DATA TRACE2 Retrieve the averaged trace data for all 30 measurements trace 2 Result...

Page 345: ...ency Settling None default settings The default storage location for the settings files is C FSW user predefined AdemodPredefined Predefined settings The following parameters can be stored in a standard settings file Any parameters that are not included in the xml file are set to their default values when the standard is loa ded Measurement settings DBW AQT Demod Filter Sweep Points Squelch State ...

Page 346: ...s 62 5 μs Input coupling AC AC AC AC Squelch level 30 dBm 20 dBm Windows RF Spectrum AM Time Domain AM Spectrum Result Summary RF Spectrum FM Time Domain FM Spectrum Result Summary RF Spectrum FM Time Domain FM Spectrum Result Summary FM Time Domain RF Time Domain FM Time Domain Result Summary AF filter High pass 20 kHz 50 Hz AF filter Low pass 15 kHz 3 kHz 150 kHz RF Spectrum Span 50 kHz 25 kHz 4...

Page 347: ...is possible to read the I Q data directly within the archive without the need to unpack untar the tar file first Sample iq tar files If you have the optional R S FSW VSA application R S FSW K70 some sample iq tar files are provided in the C R_S Instr user vsa DemoSignals directory on the R S FSW Contained files An iq tar file must contain the following files I Q parameter XML file e g xyz xml Cont...

Page 348: ...aLocation RsIqTar xsd xmlns xsi http www w3 org 2001 XMLSchema instance Name FSV K10 Name Comment Here is a comment Comment DateTime 2011 01 24T14 02 49 DateTime Samples 68751 Samples Clock unit Hz 6 5e 006 Clock Format complex Format DataType float32 DataType ScalingFactor unit V 1 ScalingFactor NumberOfChannels 1 NumberOfChannels DataFilename xyz complex float32 DataFilename UserData UserDefined...

Page 349: ...t8 8 bit signed integer data int16 16 bit signed integer data int32 32 bit signed integer data float32 32 bit floating point data IEEE 754 float64 64 bit floating point data IEEE 754 ScalingFactor Optional describes how the binary data can be transformed into values in the unit Volt The binary I Q data itself has no unit To get an I Q sample in the unit Volt the saved samples have to be multiplied...

Page 350: ... web browsers that have JavaScript enabled and if the XSLT stylesheet open_IqTar_xml_file_in_web_browser xslt is available Example ScalingFactor Data stored as int16 and a desired full scale voltage of 1 V ScalingFactor 1 V maximum int16 value 1 V 215 3 0517578125e 5 V Scaling Factor Numerical value Numerical value x ScalingFac tor Minimum negative int16 value 215 32768 1 V Maximum positive int16 ...

Page 351: ...aved pairs of I and Q values and multi channel signals contain interleaved complex sam ples for channel 0 channel 1 channel 2 etc If the NumberOfChannels element is not defined one channel is presumed Example Element order for real data 1 channel I 0 Real sample 0 I 1 Real sample 1 I 2 Real sample 2 Example Element order for complex cartesian data 1 channel I 0 Q 0 Real and imaginary part of compl...

Page 352: ...mple 1 I 2 1 Q 2 1 Channel 2 Complex sample 1 I 0 2 Q 0 2 Channel 0 Complex sample 2 I 1 2 Q 1 2 Channel 1 Complex sample 2 I 2 2 Q 2 2 Channel 2 Complex sample 2 Example Element order for complex cartesian data 1 channel This example demonstrates how to store complex cartesian data in float32 format using MATLAB Save vector of complex cartesian I Q data i e iqiqiq N 100 iq randn 1 N 1j randn 1 N ...

Page 353: ...DOMain TYPE 272 SENSe ADEMod MTIMe 240 SENSe ADEMod PM AFSPectrum RESult 290 SENSe ADEMod PM AFSPectrum TYPE 273 SENSe ADEMod PM RPOint X 255 SENSe ADEMod PM RPOint X 297 SENSe ADEMod PM TDOMain RESult 290 SENSe ADEMod PM TDOMain TYPE 272 SENSe ADEMod PRESet RESTore 181 SENSe ADEMod PRESet STORe 181 SENSe ADEMod PRESet STANdard 180 SENSe ADEMod RLENgth 240 SENSe ADEMod SET 241 SENSe ADEMod SPEC SP...

Page 354: ...NUMber 195 SENSe CORRection METHod 226 SENSe CORRection RECall 226 SENSe CORRection TRANsducer GENerator 227 SENSe CORRection STATe 227 SENSe FILTer n AOFF 261 SENSe FILTer n AWEighted STATe 261 SENSe FILTer n CCIR UNWeighted STATe 262 SENSe FILTer n CCIR WEIGhted STATe 261 SENSe FILTer n CCIT 262 SENSe FILTer n DEMPhasis TCONstant 262 SENSe FILTer n DEMPhasis STATe 263 SENSe FILTer n HPASs FREQue...

Page 355: ...PMETer p MTIMe AVERage COUNt 214 SENSe PMETer p MTIMe AVERage STATe 215 SENSe PMETer p ROFFset STATe 215 SENSe PMETer p TRIGger DTIMe 217 SENSe PMETer p TRIGger HOLDoff 217 SENSe PMETer p TRIGger HYSTeresis 218 SENSe PMETer p TRIGger LEVel 218 SENSe PMETer p TRIGger SLOPe 218 SENSe PMETer p TRIGger STATe 219 SENSe PMETer p UPDate STATe 216 SENSe PMETer p STATe 215 SENSe PROBe ch SETup CMOFfset 201...

Page 356: ...IMit k UPPer DATA 327 CALCulate MARKer FUNCtion ADEMod AM RESult t 294 CALCulate MARKer FUNCtion ADEMod CARRier RESult 295 CALCulate MARKer FUNCtion ADEMod FERRor RESult t 295 CALCulate MARKer FUNCtion ADEMod FM RESult t 294 CALCulate MARKer FUNCtion ADEMod PM RESult t 294 CALCulate MARKer FUNCtion FPEaks COUNt 314 CALCulate MARKer FUNCtion FPEeaks X 316 CALCulate MARKer FUNCtion FPEeaks Y 316 CAL...

Page 357: ...tion ADEMod THD RESult t 295 CALCulate n MARKer PEXCursion 308 CALCulate n MARKer m AOFF 300 CALCulate n MARKer m FUNCtion FPEaks ANNotation LABel STATe 314 CALCulate n MARKer m FUNCtion FPEaks LIST SIZE 315 CALCulate n MARKer m FUNCtion FPEaks SORT 315 CALCulate n MARKer m FUNCtion FPEaks STAT 316 CALCulate n MARKer m FUNCtion FPEaks IMMediate 315 CALCulate n MARKer m FUNCtion NDBDown 318 CALCula...

Page 358: ...ue 265 DISPlay WINDow n TRACe t MODE 270 DISPlay WINDow n TRACe t MODE HCONtinuous 271 DISPlay WINDow n TRACe t SELect 272 DISPlay WINDow n TRACe t STATe 272 DISPlay WINDow n ZOOM AREA 334 DISPlay WINDow n ZOOM MULTiple zoom AREA 335 DISPlay WINDow n ZOOM MULTiple zoom STATe 336 DISPlay WINDow n ZOOM STATe 335 FETCh PMETer p 212 FORMat DEXPort DSEParator 292 FORMat DEXPort HEADer 293 FORMat DEXPor...

Page 359: ...og WINDow 285 LAYout IDENtify WINDow 285 LAYout REMove WINDow 286 LAYout REPLace WINDow 286 LAYout SPLitter 286 LAYout WINDow n ADD 288 LAYout WINDow n IDENtify 288 LAYout WINDow n REMove 288 LAYout WINDow n REPLace 289 MMEMory LOAD IQ STATe 340 MMEMory STORe IQ COMMent 340 MMEMory STORe IQ STATe 341 MMEMory STORe LIST 317 MMEMory STORe PEAK 317 MMEMory STORe n TRACe 292 OUTPut ADEMod ONLine AF CF...

Page 360: ...cate TCPip RDEVice GENerator ADDRess 224 SYSTem PRESet CHANnel EXECute 179 SYSTem SEQuencer 281 TRACe IQ APCon A 201 TRACe IQ APCon B 202 TRACe IQ APCon RESult 202 TRACe IQ APCon STATe 201 TRACe n DATA 291 TRIGger SEQuence BBPower HOLDoff 245 TRIGger SEQuence DTIMe 245 TRIGger SEQuence HOLDoff TIME 246 TRIGger SEQuence IFPower HOLDoff 246 TRIGger SEQuence IFPower HYSTeresis 246 TRIGger SEQuence LE...

Page 361: ...Q mode 71 Input type remote control 199 Analog Baseband connector RF input 34 Analog Baseband Interface B71 Amplitude settings 90 Input settings 71 Analog Demodulation Measurement examples 163 Output 124 Output settings 124 Analysis Marker functions 142 Remote control 299 Settings 129 Analysis interval Configuration MSRA remote 336 338 MSRA MSRT 101 240 Analysis line 49 Configuration 154 Configura...

Page 362: ...Limit lines 148 Conditions Measurement 26 Configuration Measurement remote 180 Procedure 54 Connectors AUX control external generator 37 External generator control 37 GPIB 37 Continue single sweep Softkey 105 Continuous sweep Softkey 104 Conventions SCPI commands 171 Conversion loss External Mixer B21 remote control 190 Conversion loss tables 64 65 Available remote control 192 Band remote control ...

Page 363: ... I Q 97 Errors External generator 46 IF OVLD 86 91 Evaluation Data basis 15 Methods 15 Evaluation methods Remote 284 Example Remote control of an external generator 227 Examples Remote control 342 Export format Traces 297 Exporting Data 157 I Q data 156 157 158 347 351 I Q data remote 340 Measurement settings 133 Peak list 147 Softkey 157 Traces 133 134 157 External generator Activating Deactivati...

Page 364: ...external generator 45 Frequency denominator External generator 77 Frequency numerator External generator 77 Frequency offset External generator 44 77 Frequency range Calibration sweep external generator 44 78 Frequency converting measurements External generator 44 Frontend settings 55 FRQ External generator 46 Full scale level Analog Baseband B71 remote control 198 199 Analog Baseband B71 92 Digit...

Page 365: ... 104 105 L Limit check Remote control 322 Limit lines 147 Activating Deactivating 149 Comment 151 Compatibility 148 Copying 150 Creating 150 Data points 152 Deactivating 150 Deleting 150 Deleting values 153 Details 150 Editing 150 Inserting values 153 Managing 147 Margin 152 Name 151 Remote control 322 Saving 153 Selecting 149 Shifting 153 Threshold 151 Traces 149 View filter 149 Visibility 149 X ...

Page 366: ... Marker positioning 141 Next 142 Softkey 141 Mixer Type External Mixer B21 60 MKR Key 134 MKR Key 139 140 MKR FUNCT Key 142 Modulation Depth 24 Depth scaling 117 Frequency 23 28 MSRA Analysis interval 240 Operating mode 48 Restriction 277 MSRA applications Capture offset 103 Capture offset remote 338 MSRA MSRT Analysis interval 101 MSRT Analysis interval 240 Operating mode 48 Restriction 277 MSRT ...

Page 367: ...mote control 191 Position Limit line values 152 Power sensors 55 Activating Deactivating 82 Average count 84 Configuration 81 Configuration softkey 81 Continuous Value Update 82 Duty cycle 84 External power trigger 84 External trigger level 84 Frequency 83 Frequency Coupling 83 Measurement time 83 Number of readings 84 Reference level 83 84 Reference level offset 84 Selecting 82 Settings 81 Trigge...

Page 368: ...tor 78 Result Summary Demodulation spectrum 112 Evaluation method 23 Retrieving values remote 294 Results 15 Analyzing 129 Data format remote 291 293 Exporting 133 Retrieving remote control 289 Stability 31 Updating the display 105 Updating the display remote 279 Reverse sweep External generator 45 77 RF Offline Softkey 97 RF attenuation Auto softkey 88 Manual softkey 88 RF full span 113 RF input ...

Page 369: ...Auto All 126 Auto Freq 126 Auto Level 87 92 127 BB Power 96 Capture Offset 103 Center 93 112 Continue Single Sweep 105 Continuous Sweep 104 Demod BW 102 113 Demod Config 107 DigIConf 70 Digital I Q 97 Display Config 106 Export 157 Export config 157 External 95 FM Offline 97 Free Run 95 Frequency Config 110 I Q Power 96 IF Power 96 Import 157 Input Source Config 55 IQ Export 157 IQ Import 157 Line ...

Page 370: ...ode 130 Mode remote 270 Remote control 289 Retrieving results remote 289 Settings remote control 270 Settings predefined 132 Softkeys 132 Traces to be Checked Limit lines 149 Tracking see External generator 76 Transducers Calibration with external generator 42 80 Transmission measurement Calibration external generator 79 External generator 37 Trigger Drop out time 99 Drop out time Power sensor 85 ...

Page 371: ...te 283 Querying remote 285 Replacing remote 286 Splitting remote 283 Types remote 284 X X axis Limit lines 152 X Offset Limit lines 149 X value Marker 136 Y Y axis Limit lines 152 Scaling 120 Y Offset Limit lines 149 YIG preselector Activating Deactivating 57 Activating Deactivating remote 183 Z Zero Phase Reference Position 110 Reference Position remote 255 Zeroing Power sensor 82 Zooming Activat...

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