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Rohde & Schwarz NRP2, User Manual

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Rohde & Schwarz NRP2 User Manual Download Page 70

Instrument Functions

NRP2

67

User Manual 1173.9140.02 ─ 07

It is not useful to select the aperture time longer than required, since it increases the
noise component of the power sensor (

chapter 4.2.1.7, "Background information on

power measurement"

, 

on page 72).

Remote command: 

[SENSe<[1]..4>][:POWer][:AVG]:APERture

 

on page 272

Sampling rate

Sets the sampling rate. With the multipath power sensors R&S

 

NRP-

Z11/21/22/23/24/28/31/32, the sampling rate can be set to two different values to pre-
vent aliasing effects for particular types of modulation signal. Aliasing can occur
because the sampling frequency is located within the video bandwidth, which means
that spectral components near the sampling frequency can cause beating effects. With
changing the sampling rate, the beating effects usually disappear.

Remote command: 

[SENSe<[1]..4>]:SAMPling

 

on page 279

Duty Cycle

Using the duty cycle correction, the average power of RF bursts is calculated from the
average power of the whole signal. Essentially, the average power of the whole signal
is divided by the set duty cycle.

If thermal power sensors or R&S

 

NRP-Z91/98 multipath power sensors are used, this

procedure is the only way to determine the power of pulsed signals.

If multipath power sensors R&S

 

NRP-Z11/21/22/23/24/28/31/32 are used, this method

must be employed if the bursts are so short that their power cannot be measured in the
"Burst Av" or "Timegate Av" modes.

Remote command: 

[SENSe<[1]..4>]:CORRection:DCYCle:STATe

 

on page 268

[SENSe<[1]..4>]:CORRection:DCYCle[:INPut][:MAGNitude]

 

on page 267

Smoothing of modulated signals

To reduce result fluctuations caused by modulation, this parameter should always be
activated if the aperture time cannot be exactly adjusted to the modulation period. If the
aperture time is only 5 to 9 times larger than a modulation period, the display fluctua-
tions are sufficiently reduced. With smoothing off, 300 to 3000 periods would be
required to obtain the same effect (

"Aperture"

 

on page 66).

Remote command: 

[SENSe<[1]..4>][:POWer][:AVG]:SMOothing:STATe

 

on page 273

4.2.1.3

Measuring the average power of burst signals

The "Burst Av" mode is the simplest way of measuring the average burst power. It is
available with the multipath power sensors (R&S

 

NRP-Z11/21/22/23/24/28/31/32) and

the R&S

 

NRP-Z8x wideband power sensors.

When this mode is selected, the sensor itself detects the start and end of the burst; no
external trigger signal is required. The parameter "Dropout" for detecting the falling
edge and the parameters of the trigger menu, see 

chapter 4.2.6, "Trigger settings"

,

on page 85, are different ways of providing a stable measurement. By using the

 

Data acquisition and parameters

北京海洋兴业科技股份有限公司（证券代码：839145）

                        电话：010-62176775

网址：www.hyxyyq.com

Summary of Contents for NRP2

Page 1: ...NRP2 Power Meter User Manual 1173 9140 02 07 éX2 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq com ...

Page 2: ...is used for its designated purpose if it is used in accordance with its product documentation and within its performance limits see data sheet documentation the following safety instructions Using the product requires technical skills and in some cases a basic knowledge of English It is therefore essential that only skilled and specialized staff or thoroughly trained personnel with the required sk...

Page 3: ...their meaning The following signal words are used in the product documentation in order to warn the reader about risks and dangers Indicates a hazardous situation which if not avoided will result in death or serious injury Indicates a hazardous situation which if not avoided could result in death or serious injury Indicates a hazardous situation which if not avoided could result in minor or modera...

Page 4: ...t all or to the extent necessary electric shock fire and or serious personal injury or death may occur 1 Prior to switching on the product always ensure that the nominal voltage setting on the product matches the nominal voltage of the mains supply network If a different voltage is to be set the power fuse of the product may have to be changed accordingly 2 In the case of products of safety class ...

Page 5: ... way that anyone who has access to the product as well as the product itself is adequately protected from injury or damage 14 Use suitable overvoltage protection to ensure that no overvoltage such as that caused by a bolt of lightning can reach the product Otherwise the person operating the product will be exposed to the danger of an electric shock 15 Any object that is not designed to be placed i...

Page 6: ... must be worn 7 Laser products are given warning labels that are standardized according to their laser class Lasers can cause biological harm due to the properties of their radiation and due to their extremely concentrated electromagnetic power If a laser product e g a CD DVD drive is integrated into a Rohde Schwarz product absolutely no other settings or functions may be used as described in the ...

Page 7: ...ps a leak the fluid must not be allowed to come into contact with the skin or eyes If contact occurs wash the affected area with plenty of water and seek medical aid 6 Improperly replacing or charging cells or batteries that contain alkaline electrolytes e g lithium cells can cause explosions Replace cells or batteries only with the matching Rohde Schwarz type see parts list in order to ensure the...

Page 8: ...eset and zeroing 27 2 4 Measuring average power Cont Av mode 29 2 5 Window handling 36 2 6 Setting measurement functions 41 2 7 Graphically representing power versus time 43 2 8 Measuring average burst power Burst Av mode 47 3 Manual Operation 49 3 1 Keys 49 3 2 Screen layout 49 3 3 Menu layout 51 3 4 Menu handling 53 3 5 Dialog boxes and their controls 53 3 6 Display windows 57 4 Instrument Funct...

Page 9: ... device dependent Messages 175 5 8 Device Model and Command Processing 183 5 9 Automatic Settings for Manual Selection of a Measurement Mode 184 5 10 Correspondence between Remote Control and Manual Control 186 6 Remote Control Commands 193 6 1 Notation 193 6 2 Common Commands to IEEE 488 2 194 6 3 Overview of SCPI Command Systems 206 6 4 High Level Measurement Commands CONFigure MEASure READ and ...

Page 10: ...ubleshooting 339 8 1 Status and Error Messages in Manual Control 339 8 2 SCPI Specific Error Messages 340 8 3 Bootmenu 346 A Annex 353 A 1 Volatile Mode 353 A 2 Remote control interfaces 354 A 3 Standard Configurations 368 A 4 Programming Measurements 379 A 5 Compatibility Information 401 List of Commands 405 Index 416 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq com ...

Page 11: ...k of instrument damage Note that the general safety instructions also contain information on operating condi tions that will prevent damage to the instrument The instrument s data sheet may con tain additional operating conditions Risk of instrument damage Before putting the R S NRP2 into operation make sure that the sensor inputs are not overloaded the meter s outputs are not overloaded or wrongl...

Page 12: ...compensation Retain the original packing material If the instrument needs to be transported or ship ped at a later date you can use the material to prevent control elements and connec tors from being damaged 1 4 Setting up the meter The R S NRP2 is designed for use under laboratory conditions either on a bench top or in a rack 1 4 1 Carrying handle If the R S NRP2 is not installed in a rack it sho...

Page 13: ...a sheet The installation instructions are part of an adapter kit Risk of instrument damage For rack installation make sure that the airflow perforations are unimpeded This helps to prevent the instruments from being overheated 1 5 Front panel tour The front panel of the R S NRP2 consists of the VGA display with the softkey area the connectors on the left side and the hardkeys and utility keys on t...

Page 14: ...tors 1 5 1 Display The R S NRP2 displays results in windows Depending on the measurement mode values are displayed digitally in a combined digital and analog mode or graphically The display mode can be selected individually for each measurement i e you can per form both graphical and numerical representations simultaneously Front panel tour 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq ...

Page 15: ...information concerning the measure ment and instrument state the display area shows the measurement curve including markers result and time axes information and further auxiliary values the control panel on the right offers functions for direct setting of the screen or the access of further subdialogs Pressing the associated key right next to the display executes the function or opens the dialog b...

Page 16: ...backwards and forwards by pressing on the right or left side of the key The softkey function is context sensitive and is indicated by screen labeling For more information on the softkeys see also chapter 2 2 Brief introduction to the operation on page 24 chapter 3 5 Dialog boxes and their controls on page 53 and chapter 3 4 Menu handling on page 53 1 5 2 2 Hardkeys Hardkeys cause the R S NRP2 to r...

Page 17: ...9 as the LOCAL key it is used to switch the R S NRP2 from remote control mode all controls disabled to manual mode The key is automatically assigned its function according to context in other words there is no manual assignment by the operator MODE MODE opens the Mode dialog box to select and configure the measurement mode See also chapter 4 2 1 1 Mode dialog box on page 65 PRE SET The PRE SET har...

Page 18: ...is on i e ready for operation The possible operating states are The meter is off and disconnected from the AC supply The meter is on standby The AC supply is connected and the power supply is operat ing correctly The meter is on and is being powered from the AC supply 1 5 4 Connectors To the left of the display the R S NRP2 provides a power reference signal connector and two sensor connectors If o...

Page 19: ...ect pull the connector at its sleeve which is marked with a red dot 1 6 Rear Panel Tour This section gives an overview of the control elements and the connectors on the rear panel of the R S NRP2 Each element and connector is briefly described and a refer ence is given to the chapters containing detailed information Fig 1 4 Rear panel view 1 TRIG IN OUT2 and OUT1 TRIG OUT connectors 2 ETHERNET int...

Page 20: ...ured in the System menu see chapter 4 7 2 Setting the analog outputs and the trigger input on page 151 ETHERNET The Ethernet connector is an RJ45 socket for remote controlling the R S NRP2 via a network USB USB Universal Serial Bus interface of type B This connector is used for remote con trol of the instrument see chapter 5 2 Connecting a Controller to the Base Unit on page 170 and to update the ...

Page 21: ... instrument is disconnected from the mains I The instrument is power supplied It is either ready for operation STANDBY or in operating mode which is indicated by the color of the Status LED on the front panel Fig 1 5 AC supply connector at the rear of the meter Connect the instrument to the AC power source using the AC power cable deliv ered with the instrument Note The instrument is in compliance...

Page 22: ...by AC supply is connected and power supply is operating correctly off off and disconnected from the AC supply 1 8 2 Startup Press the ON STANDBY key to switch to ready state The R S NRP2 initiates its startup procedure i e it boots the operating system automatically performs a selftest and starts the instrument firmware If the previous session was terminated regularly the instrument uses the last ...

Page 23: ...nction test The contents of all non vola tile memories the RAM and the addressability of the interfaces are checked Mes sages indicate the options the instrument is equipped with The R S NRP2 checks the following functions Function test on the RAM Function test on the keyboard controller Addressability check on the keypad Addressability check on the test generator This test is performed if the ins...

Page 24: ...established during booting the message Not Connected is displayed instead of OK It is however possible to establish a network connection later on at any time Results display of the function test The R S NRP2 shows the progress of the tests in a colored orange progress bar The tests are completed when the bar has reached the end of the screen and all sym bols are shown The instrument indicates the ...

Page 25: ...ed completely and the R S NRP2 goes into the preset state All instrument settings that have been saved are lost as a result of this procedure 1 8 3 Shutting down the meter Whenever the meter is switched off its settings are saved The next time it is switched on these settings are automatically restored Press the ON STANDBY key to save the current setup shut down the operating system and set the in...

Page 26: ...without external triggering Some of the sections later on in this chapter assume familiarity with the basic operating techniques which are introduced in the first sections It is therefore advisable to go through these sections first before considering other topics An in depth description of the operation of the instrument is described in chapter 3 Manual Operation on page 49 2 1 Requirements Read ...

Page 27: ...analog meter or depending on the measurement mode in a trace diagram This section briefly describes the concept of manual operation of the power meter in order to perform the test examples with the instrument described later on in this chap ter For a detailed description on the controls the screen layout and how to operate the R S NRP2 refer to chapter 3 Manual Operation on page 49 Using the hardk...

Page 28: ... to one softkey In this case the softkey operated as a rocker switch see the following examples Two functions are associated with one softkey In the example the two functions are position Pos and scale Scale Scale is selected To select function Pos press the left hand side of the rocker switch Now setting the position with the cursor keys is possible Several functions are associated with one softk...

Page 29: ...is marked by a yellow frame The position in the value to be changed is inverted A digit or a letter panel appears on the right side of the display 2 Select the position to be changed using the cursor keys 3 To change the entry at the marked position either a select the digit in the panel using the associated softkey or b increase decrease the value using the cursor keys 4 Confirm the selection wit...

Page 30: ...NRP2 and the R S Power Sensors to defined initial states To preset the R S NRP2 1 Press the PRE SET hardkey The File menu appears Fig 2 1 File menu 2 Press the PRE SET hardkey again or press the Preset softkey All parameters and switching states are preset also those of inactive operating modes When the preset is completed the File menu disappears and the meter is in the preset state The preset se...

Page 31: ... meter 1 Connect the sensor to a signal source 2 Switch off the power 3 Press the ZERO hardkey The Zero dialog box is displayed Fig 2 2 Zeroing dialog box 4 Press the ZERO hardkey again to perform zeroing of all connected sensor chan nels Zero All or press the appropriate softkey to select a specific sensor for zeroing Zeroing of all connected sensors is performed The correction measurement takes ...

Page 32: ... settings with full height window Selecting the display mode Selecting the indication of auxiliary values Setting up the measurement To set up the measurement 1 Put the R S NRP2 into operation as described in chapter 1 Putting into Opera tion on page 7 and connect a sensor to connector A 2 Preset the R S NRP2 and execute Zero A After preset one result window indicates the result in dBm obtained wi...

Page 33: ...g the associated softkeys 6 Select the unit by using the UNIT softkey Tip Alternatively you can use the cursor keys to set a value To get familiar with the editor try the following steps In this example the overwrite mode default mode is active Use the LEFT RIGHT cursor keys to move the block cursor and overwrite the digits with new values Use the UP DOWN cursor keys to increase decrease the digit...

Page 34: ...The menu opens Post processing of the measurement can be set in the Mea surement menu Fig 2 5 Measurement menu 2 Select the unit W using the associated softkey The result is displayed in W Fig 2 6 Result window W Setting a fixed offset correction The R S NRP2 provides an offset correction to the displayed measurement result To set a fixed offset correction 1 Select the Sensor menu The Sensor menu ...

Page 35: ...plifiers can be set in this dialog box Fig 2 8 Offset dialog box 3 Activate the entry for the global offset Positive values are for correcting losses and negative values for gains 4 If you have an attenuator at hand enter its value and connect the attenuator between the sensor and the signal source otherwise just enter 10 dB 5 Confirm the entry with MENU 6 Activate the global offset correction by ...

Page 36: ...alue as before Fig 2 10 Result window Offset In the note line of the result window the Δ symbol indicates that global offset cor rection is active Performing relative power measurements The R S NRP2 calculates and displays also the relative difference between a mea sured value and a reference value The reference value can be a measured value that has been saved or an arbitrary value that is entere...

Page 37: ... result as new reference value After the reset rel ative measurement is automatically active again If the power has not changed in the meantime the indicated value is close to 0 dB Fig 2 13 Result window Reset relative 5 If an attenuator is still connected remove it now and connect the sensor directly to the signal source The displayed value should now equal the offset that has been entered Checki...

Page 38: ...ow the menu bar and displays all relevant settings measurement modes of contributing channels A ContAV Trigger mode auto averaging number and mode 32 Auto Offset 10 dB S parameter device none duty cycle correction none Fig 2 15 Result window key measurement parameters 4 To return the window to its normal size open the Windows menu with the MENU hardkey and press the Arrange softkey Measuring avera...

Page 39: ... menu with the topmost softkey or the cursor keys The Window softkey selects the window The settings in the Windows menu and in the Measurement menu are valid for the selected window Fig 2 17 Windows menu The cursor keys can in most cases be used to select windows instead of the soft keys This also applies to opened dialog boxes 3 Select window 1 The third softkey is now labeled Close Expand 4 Pre...

Page 40: ...size The following steps show the difference between the Open and Init functions You first have to change two settings of window 1 Opening creating and closing windows 1 Activate the analog display of results D A 2 Switch to the Measurement menu and select Relative On 3 Return to the Windows menu Window 1 now displays the A Rel function on an analog scale Window handling 北京海洋兴业科技股份有限公司 证券代码 839145...

Page 41: ...t changed and all window specific settings have been maintained 6 Close window 1 again with Close 7 Open it this time with Init The window again displays the measurement function A in digital format In contrast to Open where the settings remain unchanged Init sets all the parameters to their default values Init only resets the window settings made in the Windows and Measurement menus but it does n...

Page 42: ...standard display mode is Dig ital measurement result Fig 2 21 Windows menu digital display mode 2 Select the D A display mode Window 1 now shows an analog scale and a digital reading Fig 2 22 Result window analog meter full height The menu now includes the new item Analog Meter for setting the scale limits Window handling 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq com ...

Page 43: ...Minimum Max Min 1 Select the Measurement menu 2 Select Function in this menu The measurement function unit of the measurement result sensors used and the auxiliary values can be selected in the Function Unit dialog box Fig 2 24 Function Unit dialog box 3 Open the Auxiliaries drop down list Window handling 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq com ...

Page 44: ...easurement result The max min values rise corre spondingly However if the signal power is increased the maximum value tracks the measurement result as soon as the stored maximum is exceeded 2 6 Setting measurement functions An R S NRP2 with two sensors connected is required for this section If only one sen sor is available you can only select the measurement function Single Performing ratio measur...

Page 45: ...log box ratio In this dialog box you can select the function used to calculate the result in the selected window For example Ratio A B yields the quotient from the measured power values in channels A and B 5 Select Ratio A B from the drop down list for the measurement function and close the drop down list with MENU 6 Now press the Unit softkey Setting measurement functions 北京海洋兴业科技股份有限公司 证券代码 8391...

Page 46: ...th an oscilloscope If you wish to carry out measurements on signals with modulated power envelope in the Burst or Timeslot mode initially displaying the signal in the Trace mode is always recommended Stable triggering by the R S NRP2 can more easily be accomplished in this mode Setting the Trace Statistics mode 1 Connect a power sensor of the R S NRP Z1x R S NRP Z2x or R S NRP Z8x family to connec...

Page 47: ...e Fig 2 32 Trace Statistics measurement mode 6 Close the Mode dialog box 7 Close the Sensor menu The window is now in the Trace Statistics display mode and shows the Trace page Fig 2 33 Trace representation of a pulsed signal The info panel at the bottom of the window shows all parameters relevant for the display Graphically representing power versus time 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775...

Page 48: ...e can be performed Settings for reliable triggering 1 Press the Trigger softkey in the trace display The Trigger dialog box opens Fig 2 34 Trigger dialog box page 1 A dotted line indicates the trigger threshold in the diagram Fig 2 35 Trace display trigger threshold 2 Select the Normal trigger mode 3 Select internal triggering Source Internal 4 Set the positive trigger slope 5 Set the trigger thre...

Page 49: ...symbols on page 58 8 Enter a Dropout value The dropout time prevents the trigger system from being activated by signal excur sions prior to the trigger event targeted 9 Scroll to the third page of the Trigger dialog box Fig 2 37 Trigger dialog box page 3 10 Set a Hysteresis value Setting the trigger hysteresis to a value other than 0 dB will prevent triggering from occurring again until the measur...

Page 50: ... dBm and 10 dBm 2 Press the PRE SET hardkey twice A measurement window is now available 3 Change to the Sensor menu and select Mode The Mode dialog box opens 4 Select Trace Statistics 5 In the trace mode check that the sensor detects a signal and reliably triggers For information concerning reliable triggering see chapter 2 7 Graphically repre senting power versus time on page 43 6 Change back to ...

Page 51: ...chapter 4 2 1 3 Mea suring the average power of burst signals on page 67 The power of burst can be measured also by means of timegates see chapter 4 2 1 5 Measuring the average power in gates on page 71 and chapter 4 5 4 Gates dis play mode on page 120 In contrast to the burst mode which automatically detects the burst end the length and position of the gate over time must be exactly defined Measu...

Page 52: ...page 12 for information on the keys located at the front panel Brief introduction to the operation key handling page 24 providing a brief intro duction on how to operate Instrument functions Main settings FREQ PRESET ZERO page 61 for infor mation on the setup keys FREQ PRE SET and ZERO Softkey manual operation Menu handling page 53 Dialog boxes and their control elements page 53 3 2 Screen layout ...

Page 53: ... the screen It contains the menu names The active menu is highlighted Selecting the active menu Fig 3 3 Screen layout selecting the active menu Select the active menu Press the right or left side of the topmost softkey one or more times Alternatively you can also use the cursor keys Folding menus out or in Fig 3 4 Screen layout measurement menu folded out Fold out in the active menu 1 Press the ME...

Page 54: ...g boxes can be opened from the menus The dialog boxes display a group of rela ted parameters that can be set See chapter 3 5 Dialog boxes and their controls on page 53 for more information on operating the dialog box functions 3 3 Menu layout This section describes the menu provided by the R S NRP2 The meter displays the menu names in the menu bar at the top of the screen The menus are selected by...

Page 55: ...etails of postprocessing are summarized in the Measurement menu See chapter 4 4 Configuring measurements on page 97 for a detailed description of the Measurement menu File menu The File menu is used to handle the setup memories window names and display information about errors See chapter 4 6 Management of settings on page 141 for a detailed description of the File menu System menu The System menu...

Page 56: ... in the menu The currently selected option is highlighted in orange Select the option by pressing the left or right side of the associ ated rocker switch Use of softkeys with dual assignments Some softkeys are assigned two menu items One is selected by pressing the left hand side of the rocker switch the other the right hand side The two menu items are separated by a vertical line 3 5 Dialog boxes...

Page 57: ...nd channels that have not been installed are shown in gray and cannot be selected 3 5 3 Check boxes Check boxes are used to activate and deactivate functions You can toggle between the two states by pressing the appropriate softkey 3 5 4 Option fields Option fields contain groups of mutually exclusive operating modes When you press the left hand side of the rocker switch the next option on the lef...

Page 58: ... whole field can be cleared with the DEL 1TRIG hardkey In the insert mode you can enter digits and or letters Any changes you make to a field can be confirmed with the MENU hardkey When this hardkey is pressed the new value is subjected to a validity check If the check dis covers an error a warning message is output You can quit the editor by pressing the ESC hardkey this leaves the old values unc...

Page 59: ... 3 5 8 Drop down lists Drop down lists are used to select an item from a list of predetermined values When the drop down list is activated the list folds out upwards or downwards The up down cursor keys or one of the rocker switches next to the list are used to select items from folded out pop up menus Confirm the selection with the MENU hardkey or reject with the ESC hardkey 3 5 9 Digit and lette...

Page 60: ...ndows come in three sizes half height quarter height and full height In windows measurement results are displayed digitally in a combined digital and analog mode and graphically See chapter 4 3 Displaying measurement results on page 91 for instructions on selecting these modes Dig window full height Dig window half height Graph trace window full height Graph trace window half height Display window...

Page 61: ... sizes with the Arrange menu item Otherwise it is not possible to change the size of the windows the window size is determined by the number of win dows 3 6 2 Special symbols Table 3 1 Special symbols Window Auxiliary values Window number Auxiliary value here max min Window name Confirm with the MEN key Max Min Display values Max Frequency in the primary and Min secondary channel No of measurement...

Page 62: ...Trigger on rising slope Noise component with auto filter in Fixed Noise mode Trigger on falling slope Noise ratio exceeded Measurement in progress Measurement stopped Physical trigger event Other Trigger threshold Over limit Delayed trigger event reference time Table 3 2 Symbols for pulse parameters Pulse Time Parameter Pulse Power Parameter Pulse Width Pulse Top Duty Cycle Trace Avg Rise Time Tra...

Page 63: ...nual 1173 9140 02 07 Table 3 3 Symbols for time slot measurement Time slot start of measurement Time slot end of measurement Time slot length of measure ment Display windows 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq com ...

Page 64: ... settings on page 145 chapter 4 8 Messages and alarms on page 166 4 1 Main Settings The main settings for the R S NRP2 are accessed via hardkeys 4 1 1 Preset hardkey PRE SET changes the instrument to its default state Preset to a predefined state for a mobile radio standard or to a user defined Setup state A maximum of 10 states are possible The highlighted background of the text indicates that th...

Page 65: ...or remote control operation or SYSTem PRESet on page 325 Default state for manual operation 4 1 2 Frequency hardkey FREQ is used to set the carrier frequency of the applied signal This corrects any fre quency dependent effects introduced by the sensor If the sensor is to reach the specified measurement accuracy the signal frequency must be entered 4 1 2 1 Frequency dialog box Fig 4 1 Frequency dia...

Page 66: ...ied Turn off all test signals before zeroing 4 1 3 1 Zero dialog box Fig 4 2 Zero dialog box The colored background of the text indicates that the function can also be started by pressing the ZERO hardkey again Zero All Zeroes all connected sensors Remote command CALibration ALL ZERO AUTO on page 237 Zero A B C D Zeroes the selected channel Remote command CALibration 1 4 ZERO AUTO on page 237 4 1 ...

Page 67: ...ettings The Sensor menu contains the following items Setting the measurement mode on page 64 Offset correction on page 76 and Filter averaging on page 79 Measurement ranges on page 83 Effect of the RF source on page 84 Trigger settings on page 85 Trigger sequence control on page 89 Some of the parameters listed above are not available for certain types of sensor 4 2 1 Setting the measurement mode ...

Page 68: ...e Statistics mode the R S NRP2 analyzes the power envelope of the test signal and displays the power envelope either as a function of time or in its probability distribution and probability den sity distribution function see chapter 4 2 1 6 Trace statistics mea surements on page 72 T slot Av In the Timeslot Average mode the average power can be measured over defined time intervals of a signal with...

Page 69: ...efault setting combined with active smoothing see below is usually adequate A different setting may be required if the result exhibits fluctua tions due to modulation If the modulation frequency is known the best results can be achieved with the aper ture time set exactly to an integer multiple of the modulation period and smoothing switched off If possible choose the multiple such that the result...

Page 70: ...1 22 23 24 28 31 32 are used this method must be employed if the bursts are so short that their power cannot be measured in the Burst Av or Timegate Av modes Remote command SENSe 1 4 CORRection DCYCle STATe on page 268 SENSe 1 4 CORRection DCYCle INPut MAGNitude on page 267 Smoothing of modulated signals To reduce result fluctuations caused by modulation this parameter should always be activated i...

Page 71: ...ast this time the end of the burst is assumed Modulation specific power drops that are shorter than the set value are ignored Note The Dropout parameter must not be longer than the interval between the end of the burst and the start of the next burst Remote command SENSe 1 4 POWer BURSt DTOLerance on page 274 Excluded from Start End Set the time interval at the beginning or end of the burst that i...

Page 72: ...concerning the timeslot mode in section Timing diagram of T Slot Av signals on page 75 For the most common mobile radio standards the required settings can directly be loa ded via the Recall Standard dialog box in the File menu see chapter 4 6 4 Load ing settings for mobile radio standards on page 142 In the Graph display mode the timeslot parameters can also be set interactively in the Timeslots ...

Page 73: ...4 TIMing EXCLude STARt on page 283 SENSe 1 4 TIMing EXCLude STOP on page 283 Fence Activates the Fence function In numeric T slotAv mode the Fence function is only available for the wideband power sensors of the R S NRP Z8x series For all other sensors a fence can be used in the T slots display in the Trace Statistics sensor mode Config Fence Opens the dialog box for setting start and length of th...

Page 74: ...ired for synchronization see also chapter 4 2 6 Trigger settings on page 85 Select T gate Av in the Mode dialog box opened via the Sensor menu Fig 4 9 Mode dialog box T gate Av Gate Sets the number of the gate to be configured Note In remote control the gate to be configured is determined by the TGATe suffix see commands for the following settings Start Length of Gate Start of the gate is referenc...

Page 75: ...Cont Av T slot Av T gate Av and Burst Av mode smoothing or what is the point of dropout tolerance Additionally timing diagrams explain visually the relation between trigger aquisition intervals and excluded time segments in T gate or T slot measure ment mode Acquisition interval As the sensor amplifiers use chopping a measurement always contains an integer multiple of a pair of acquisitions which ...

Page 76: ...s when using different sensor types are thus quite normal There are two cases where the default aperture time may not be the best selection if measuring signals with low frequency modulation if very short measurement times are needed e g with remote controlled applica tions With low frequency modulation the aperture time should match the modulation period to optimally suppress modulation induced v...

Page 77: ... approximately 30 when smoothing is activated To compensate for this the averaging number should be dou bled compared to non active smoothing Therefore smoothing may be not sufficient when measuring very low powers Dropout tolerance The Dropout parameter facilitates the identification of the burst end of modulated sig nals e g NADC Without this parameter the end of the burst might erroneously be d...

Page 78: ...diagrams that differ by externally and internally triggered events show the relation between the listed parameters Trigger event trigger delay and start of the first timeslot Nominal width exclude intervals and measurement interval of the timeslots Time Excluded from End 1 2 3 4 Width Trigger event external Measurement interval Fig 4 12 Measurement on timeslot signal with external triggering Data ...

Page 79: ...a fixed offset Frequency dependent corrections can be made with Table Both types of correction can be made simultaneously S Parameter Device is for correcting the effects of a two port connected at the sensor input output in terms of its S parameters The S parameters of the two port must be stored in the sensor For information on how to proceed refer to the operating manual of your R S Power Senso...

Page 80: ...ect the sensor with the suffix in command SENSe 1 4 i e choose suffix 1 for channel A channel 2 for B and so on Global value Enters the global dB offset dB offset Positive values correspond to external losses negative values to external gains Remote command SENSe 1 4 CORRection OFFSet on page 267 Global state Activates deactivates the global offset correction Remote command SENSe 1 4 CORRection OF...

Page 81: ... S NRP2 provides a list editor for defining the frequency offset value pairs Two table editor modes are available Selection mode In this mode using the cursor keys you can select the number field you want to Edit Insert or Delete Note A long list can not be displayed in full length in the dialog box The entries are therefore viewed in a window which automatically scrolls up or down if the cursor m...

Page 82: ... marked row Sort Sorts the rows in the table so that the frequencies in the rows are in ascending order Name Renames the selected table to identify it more easily Use of the character editor is described in chapter 3 5 9 Digit and letter panels on page 56 Remote command MEMory TABLe MAP on page 254 4 2 3 Filter averaging The averaging filter is used to reduce fluctuations in the measurement result...

Page 83: ...averaging number AvgNo To obtain a high output data rate averaging in man ual mode is performed continuously i e a new result is fed into the averaging filter after two acquisitions have been evaluated The oldest result is taken out of the aver aging filter and a new average value is calculated The averaging number can be selected automatically or it can be manually set to a fixed value As a start...

Page 84: ...changed manually If manual filtering is selected the desired averaging number can be set Changes are immediately imple mented when a key is pressed Remote command SENSe 1 4 AVERage COUNt on page 263 Reset Initializes the currently measured averaging filter power value Thus the display can be updated quickly after a change in level particularly in the case of a large averaging number Remote command...

Page 85: ...rom which the autofilter setting i e the averaging number is derived for measurements in the T slot Av mode This parameter is not available in the other measurement modes Remote command SENSe 1 4 AVERage COUNt AUTO SLOT on page 265 Noise Content Auto Config Defines the proportion of intrinsic noise in the measured result in dB Specifically this value gives the permitted relative deviation from the...

Page 86: ...range operation but it is only considered with an activated User def d transition checkbox Only offsets with a negative sign are allowed This means that transition regions can only be shifted to lower power levels Thus paths can be excluded from evaluation well before they exhibit noticeable linearity errors with critical signals Only the most insen sitive path cannot be protected by this measure ...

Page 87: ... shift of the transition region s Remote command SENSe 1 4 POWer AVG RANGe CLEVel on page 273 Offset Negative dB value as a measure for the shift of the transition region s Modifications are immediately effective after each keystroke see chapter 3 5 Dialog boxes and their controls on page 53 Remote command SENSe 1 4 POWer AVG RANGe CLEVel on page 273 4 2 5 Effect of the RF source Information relat...

Page 88: ...A channel 2 for B and so on Source Γ Correction Activates gamma correction in order to achieve higher measurement accuracy Remote command SENSe 1 4 SGAMma CORRection STATe on page 280 Source Γ Magnitude Magnitude of the source reflection coefficient Γ Remote command SENSe 1 4 SGAMma MAGNitude on page 279 Source Γ Phase Phase angle of the source reflection coefficient Γ in degrees Remote command SE...

Page 89: ...trig gering so that only one trigger event at a time is executed To enable triggering again press the DEL 1TRIG key The symbol appears in the display see chapter 4 2 7 Trigger sequence control on page 89 Normal Continuous triggering with regular trigger events Auto Trace Statistics mode only This setting automatically starts a mea surement if no trigger event has occurred after 300 ms Remote comma...

Page 90: ...nternal triggering Any previously defined trigger master is disabled and an external trigger signal at the TRIG IN OUT2 connector is ignored The trigger master is used as the external trigger source for all other sensors Remote command TRIGger ALL SOURce on page 334 Slope Sets the polarity of the active slope of the externally or internally applied trigger signal see Source Positive The rising edg...

Page 91: ... Av mode For this reason the setting should always be checked in the Trace Statistics mode timeslot display mode Remote command TRIGger ALL DELay on page 331 Dropout Trigger dialog box 2 Sets the dropout time The dropout time prevents the trigger system from being activa ted by signal excursions prior to the trigger event targeted The parameter is set to a value that is slightly higher than the ma...

Page 92: ...sis Modifications of the trigger hysteresis are effective immediately see chapter 3 5 Dia log boxes and their controls on page 53 Remote command TRIGger ALL HYSTeresis on page 333 Holdoff Trigger dialog box 3 Sets the holdoff time The holdoff time starts with the trigger event During holdoff time other trigger events are suppressed Modifications of the holdoff time are effective immediately see ch...

Page 93: ...ain Press the DEL 1TRIG hardkey is indicated in the title bar If no trigger signal is active your can force a measurement with the DEL 1TRIG hard key at any time 4 2 7 2 Controlling trigger sequence in single mode In Single mode only one measurement is executed after a trigger event After a measurement is completed the trigger system is inactive To start the measurement again 1 Press the DEL 1TRIG...

Page 94: ...mber of dis played windows Fig 4 23 Arranging windows 4 3 2 Labeling windows The windows are numbered from 1 to 4 and are therefore clearly identifiable By default they are labeled by the window s number 1 to 4 The label is displayed in the top left of the title bar Windows can also be assigned a name see Window Name in the File menu The name is displayed in the window s title bar Assigning meanin...

Page 95: ...he parameters settings in the Window dialog box act on the selected window Remote command DISPlay WINDow SELect on page 246 With remote command there is a distinction between selecting the active window and selecting the window to be configured The active window is selected using command DISPlay WINDows SELect The window to be configured is selected with the suffix of the WINDows keyword For examp...

Page 96: ...ght windows display all relevant parameters The enhanced control functions offered by the Trace Statistics mode are available only if the windows are full height For a graphical representation of the various window types and a description of symbols see chapter 3 6 1 Window sizes and types on page 57 and chapter 3 6 2 Special symbols on page 58 Remote command DISPlay WINDow SIZE on page 246 Arrang...

Page 97: ...active settings is provided e g signal frequency sensor mode trigger mode etc For a description of the used symbols see chapter 3 6 2 Special symbols on page 58 D A The hybrid digital analog display mode shows the measured value on an analog scale and numerically Displaying measurement results 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq com ...

Page 98: ...n selected measurement values are indica ted on the left side of the graph Remote command DISPlay WINDow 1 4 FORMat on page 242 4 3 3 4 Configuring the result display Each of the display modes is configured individually Fig 4 26 Display mode specific settings The available configuration parameters depend on the selected display mode Dig In the digital display the resolution is adjustable see Setti...

Page 99: ...e magnitude of the result A digit is added or removed for each resolution stage that is added or removed The selected resolution also influences the automatic selection of the averaging num ber in the Normal mode see chapter 4 2 3 Filter averaging on page 79 The higher the selected resolution the higher the averaging number to correspond to the number of digits Resolution dB Sets the resolution fo...

Page 100: ...eously Each measure ment is configured separately in a window Measurement parameters are set in the Measurement menu For every window opened via the Windows menu a measurement in the Measure ment menu can be configured The measurement channels A B C and D the pro cessing of the measured values ratio difference the result unit and additional infor mation measurement uncertainty max min are defined ...

Page 101: ...ve window and selecting the window to be configured The active window is selected using command DISPlay WINDows SELect The window to be configured is selected with the suffix of the WINDows keyword For example DISPLay WINDow3 NAME defines the label of window 3 4 4 3 Selecting a measurement function In this chapter measurement function are discussed that can be displayed in numeric windows Dig D A ...

Page 102: ...measurement a Sec Channel must be defined prior to select ing the measurement function For impedance matching measurement functions SWR x y RCoeff x y and RLoss x y the first letter x is always referenced to the channel detecting the Inci dent power and the second letter y to the channel detecting the Reflected power Prim Channel and Sec Channel are replaced by Incident and Reflected in this case ...

Page 103: ... Statistics mode and the results win dow is set to Graph the envelope power of this channel is automatically shown as a function of time or in its distribution and distribution density function CCDF CDF PDF In this case it is not possible to select another measurement function Function The list of functions itemizes all the measurement functions provided by the R S NRP2 Any of the four channels ca...

Page 104: ... 4 4 3 2 Measuring power in gates For time gated power measurements the R S NRP2 power meter offers two modes T gate Av Trace Statistics T gate Av In this mode the average power Av within a user definable gate can be measured The time resolution is high and corresponds to the sampling rate of the sensor To configure the measurement 1 Select T gate Av in the Mode dialog box of the Sensor menu 2 Set...

Page 105: ...Sensor menu 2 Select Gate mode in the Display control panel of the Trace display 3 Set the timing parameters in the Config Gate control panel of the Trace display The gate is indicated graphically in the trace display The power values within the selected gate are indicated in the info panel Fig 4 33 Measurement within a gate Trace Statistics mode Graph display mode To display the results numerical...

Page 106: ...r two Pk Av ratios The impedance mea surement functions even require identical measurands e g two average power values but not one average power value and one peak power value Fig 4 35 Function Unit dialog box sensors are operated in time gate mode Refer to chapter 4 4 3 1 Functions and their use on page 99 for description on the functions and the channel selection Gate Determines which gate is to...

Page 107: ...ate of the sensor To configure the measurement 1 Select T Slot Av in the Mode dialog box of the Sensor menu 2 Set the timing parameter for the timeslots 3 Select the timeslot number for the measurement in the Function Unit dialog box of the Measurement menu The average power within the selected timeslot is indicated Fig 4 36 Measurement within a timeslot T Slot Av mode Trace Statistics In this mod...

Page 108: ...alog box of the of the Measurement menu 3 Select the timeslot the main value Eval and Aux Normal The main value together with the auxilliary values is indicated numerically Fig 4 38 Measurement within a timeslot Trace Statistics mode Dig display mode In Dig D A display modes the results can be correlated to any other measured value Function If you want to combine the measurement results of differe...

Page 109: ...es CALCulate 1 8 DATA on page 225 4 4 3 4 Setting the unit Combining channels which are operated in different measurement modes It is possible to define measurement functions based upon channels that are operated in different measurement modes This way the average power within a specific time slot of a signal can be related to the average burst power of another signal Many other combinations are p...

Page 110: ...lts for the different units either in absolute notation or relative to a reference value see chap ter 4 4 4 Relative measurement on page 110 for legend see table 4 7 Table 4 3 Formulas for absolute single channel power measurement Function Unit W dBm dBμV Single P mW 1 lg 10 P V 1 lg 20 Z P Table 4 4 Formulas for power ratio measurement Function Unit W dBm dBμV Ratio A B B A P P lg 10 1 100 B A P ...

Page 111: ...0 B A P P 1 100 R B A P P P Ratio R Y X B A P P P P R Y X B A P P P P lg 10 1 100 R Y X B A P P P P Table 4 7 Legend for formula tables Variable Meaning P PA PB PR PX PY R Z Power Power in channel A incident power Power in channel B reflected power Reference power Reference power ratio Characteristic impedance i e 50Ω Unit The Unit drop down list is used to set the result unit Units that are provi...

Page 112: ... function is set to Extremes i e the maximum the mini mum and the max min value are indicated See also chapter 3 6 2 Special symbols on page 58 for information concerning the displayed symbols and values The R S NRP2 continuously saves the data that is required for the display of extreme and statistic values The data memory can be erased any time with Aux Val Reset in the Measurement menu see also...

Page 113: ...since the search for statistic values has been started Remote command CALCulate 1 8 DATA on page 225 CALCulate 1 8 MAXimum DATA on page 232 CALCulate 1 8 MINimum DATA on page 232 CALCulate 1 8 PTPeak DATA on page 233 CALCulate 1 8 MEAN DATA on page 232 CALCulate 1 8 SDEViation DATA on page 234 CALCulate 1 8 COUNt DATA on page 225 DISPlay WINDow 1 4 AVALue on page 241 4 4 4 Relative measurement The...

Page 114: ...red or edited using the Reference Value dia log box Open the dialog box with the RefVal softkey Fig 4 42 Reference value dialog box Ref Enter a reference value or modify a previously set value Remote command CALCulate 1 8 RELative MAGNitude on page 233 Reset The current measurement result is transferred to the reference value memory of the active window and is displayed This function can also be s...

Page 115: ...te 1 8 LIMit LOWer DATA on page 228 CALCulate 1 8 LIMit LOWer STATe on page 229 Warning Beep Activates an acoustic alarm which is output if a limit has been exceeded Remote command CALCulate 1 8 LIMit BEEP on page 227 4 4 6 Resetting auxiliary information For each window the R S NRP2 continuously saves data that is required for display ing the extreme values and statistical values These values can...

Page 116: ...velope powers of two channels over time 4 5 1 Basic settings for trace display The trace display can be quickly selected after a preset 1 Connect a sensor to the R S NRP2 any channel The sensor must support trace measurements true for all sensors except for the R S NRP Z9x R S NRP Z5x and R S NRP Z27 Z37 sensors 2 Apply a pulsed signal to the sensor The amplitude of the signal has to be sufficient...

Page 117: ...ce display is not visible check the trigger settings see chapter 4 2 6 Trigger settings on page 85 4 5 2 Trace window A trace measurement is displayed graphically either in full height or in a half height window In half height window the meter shows the waveform s and an info panel indicating selected measurement results or instrument settings Control elements to directly change the settings are n...

Page 118: ...r display modes are set via the Display softkey Display Opens the control panel for selecting the measurement mode for trace display See the following sections for more information Trace shows the trace display mode and the corresponding control panel on page 115 Gates Gates display mode on page 120 Marker Marker display mode on page124 Pulse Pulse display mode on page 126 T Slots T Slots display ...

Page 119: ...or keys position or scale the waveform Pos The cursor keys shift the waveform in horizontal and vertical direction Scale The cursor keys expand and compress the waveform When the hori zontal scaling is modified the points pixels at the left of the screen remain unchanged When the vertical scaling is modified the neutral zone depends on the unit selected the points in the center of the screen remai...

Page 120: ...ess numbers 4 5 3 2 Trace diagram settings Config Grid opens the subdialog to determine the position and the size of the screen window In addition the dialog box allows to enter a power reference value Select Config Grid in the control panel opened via the Window Graph Dis play Trace control panel Trace Statistics sensor mode Fig 4 47 Config Grid in Trace display mode Ref Power Sets the reference ...

Page 121: ... falsified due to instable trigger conditions you should always check whether the trace is stable in its time axis This should be done without averaging Trace Avg No 1 To meet the requirements for higher reproducibility and accuracy of numeric results measured power values for gates can be averaged even more by Numeric Averag ing irrespective of Trace Averaging The measurement accuracy for the pea...

Page 122: ...veraging number for averaging the traces Remote command SENSe 1 4 TRACe AVERage COUNt on page 284 Video BW Selects the video filter bandwidth This setting is available in the R S NRP Z8x wide band power sensors otherwise it is fixed Available values are Full 5 MHz 1 5 MHz and 300 kHz Remote command SENSe 1 4 BANDwidth VIDeo on page 266 4 5 3 4 Trace function settings The trace function settings ar...

Page 123: ...d power sensors allow you to select what is to be displayed Average Average power value resulting in a flicker free display and smooth trace Note Average is fixed for all multipath power sensors Random Power of a randomly selected sample i e a realistic display with sig nal details Peak Highest power measured peak power Max Hold Displays the highest value measured for each point pixel of the selec...

Page 124: ...panel see graph below Table 4 8 Gates display mode with two traces Gate measurement is performed for trace B Select Trace Bav Gate measurement is performed for both traces Select Trace B A the ratio is indicated Note that the power of each trace is averaged over the gate length before the power ratio of the two traces is calculated The start of the gate 1 2 relates to the delayed trigger event 0s ...

Page 125: ... on page 114 Config Gates Open the subdialog to configure the four available gates see chapter 4 5 4 3 Gate diagram settings on page 123 Pos Scale Defines if the cursor keys position or scale the waveform Pos The cursor keys shift the waveform in horizontal and vertical direction Scale The cursor keys expand and compress the waveform When the hori zontal scaling is modified the points pixels at th...

Page 126: ...a the Window Graph Dis play Gates control panel Trace Statistics sensor mode Configure the four available gates in the Gates Config dialog box Fig 4 51 Gates Config dialog box The four available gates are common for all diplayed waveforms Individual gates for specific channels sensors can only be configured in numeric T gateAV mode Gate Selects the gate to be configured Note In remote control the ...

Page 127: ...e you can display two markers in addition to the trace s The power power ratio at the marker positions is displayed together with the marker time The markers can be positioned automatically to measure the maximum and minimum power of the waveform s The settings for Trig gering Filt ering Function and Unit are taken from the Trace display mode and cannot be changed Markers are indicated by red arro...

Page 128: ... zone depends on the unit selected the points in the center of the screen remain unchanged when dBm dB and dBµV are used The points at the bottom of the screen remain unchanged in all other dis plays Defines the active marker which can be positioned by means of the cursor keys Max Min marker position Sets the two markers to the extreme values of the selected trace each time the key is pressed If t...

Page 129: ...r within the active gate of the selected trace waveform The measurement results are shown in the info panel at the bottom of the screen The settings for Trig gering Filt ering Function and Unit are taken from the Trace display mode and cannot be changed Select Pulse in the control panel opened via the Window Graph Display dialog box Trace Statistics sensor mode Fig 4 54 Pulse display mode Table 4 ...

Page 130: ...ens the subdialog to configure the pulse analysis and to select the power time parameters for the info panel display see chapter 4 5 6 2 Pulse diagram settings on page 128 Pos Scale Defines if the cursor keys position or scale the waveform Pos The cursor keys shift the waveform in horizontal and vertical direction Scale The cursor keys expand and compress the waveform When the hori zontal scaling ...

Page 131: ...rameters in the header of the dialog box You can activate up to 6 items out of 15 for display As a prerequisite of pulse analysis the parameters selected for display must be inclu ded in the analysis window If for example the duty cycle of a pulsed signal is to be determined at least one cycle of the waveform must be within the borders of the selected gate or must be part of the visible portion of...

Page 132: ...nfo panel are selected on the Power tab Top Base Power Indication of the power of the pulse top base defined in the Pulse Measurements Config tab Average 1 period Indication of the average power of the signal The visible trace length must exceed one cycle of the waveform The gate length is arbitrary Max Peak Indication of the maximum power measured within the analysis win dow Minimum Indication of...

Page 133: ...evel is used to define the pulse width pulse start time and pulse stop time Ref s related to Selects how the threshold parameters are to be interpreted either voltage related or power related Changing from a power based defi nition to a voltage based definition and vice versa affects the analy sis because different points of the waveform are analyzed The following table gives the settings related ...

Page 134: ... g when comparing the measurement result with that of a thermal power sensor Peak Assigns the pulse peak power to the pulse top level Set to defaults Presets all parameters in the Pulse Measurement Config tab 10 50 90 power related 4 5 7 Timeslot display mode The timeslot structure can be defined and displayed in this mode You can additionally select one timeslot and measure the most important pow...

Page 135: ...he Config T Slots menu Set screen so that the envelope of a complete frame is displayed Open Trigger dialog box and set Delay so that the timeslot structure coincides with the measured envelope To increase the measurement accuracy expand the window horizontally to such an extent that the selected timeslot is displayed in adequate size perform measurement in the numeric Timeslot Av mode This mode o...

Page 136: ...ursor keys position or scale the waveform Pos The cursor keys shift the waveform in horizontal and vertical direction Scale The cursor keys expand and compress the waveform When the hori zontal scaling is modified the points pixels at the left of the screen remain unchanged When the vertical scaling is modified the neutral zone depends on the unit selected the points in the center of the screen re...

Page 137: ...e performed on TDMA signals GSM EDGE PDC NADC PHS etc the nominal timeslot length must be entered here i e the frame length divided by the number of timeslots Table 4 10 GSM signal Frame length 4 615 ms No timeslots 8 Nominal width 4 615 8 ms 576 875 μs Remote command SENSe 1 4 POWer TSLot AVG WIDTh on page 278 Excluded from Start End Defines the intervals at the start or end of the timeslot which...

Page 138: ...ideband power sensors allow you to statistically analyze the envelope power as CCDF CDF or PDF The measurement either covers one of the four gates or if not synchronized with the signal a user selectable time interval The measurement is repeated until the desired number of samples is attained You can set the video bandwidth in the Trace display mode to reduce noise Two traces can be indicated in t...

Page 139: ...splay Selects another view see chapter 4 5 2 Trace window on page 114 Config Grid Activates the additional tabular display of values or opens the subdialog to configure the diagram and to numerically set the marker positions see chapter 4 5 8 2 Statis tics diagram settings on page 137 Pos Scale Defines if the the cursor keys position or scale the displayed curve s Note There are restrictions on th...

Page 140: ... 2 3 4 Select one of four provided gates Cont Select the unsynchronized time interval Note The length of the time interval can be set in the Aperture dialog box of the Stat s function dialog Auto Scales the result and the power axis in such a way that the trace is optimally displayed Statistic Functions Opens the Statistics Functions subdialog for selection of a distribution function and one or tw...

Page 141: ... Scale Fig 4 64 Stat s Config Scale tab The Scale tab contains the parameters for setting the axes of the display Max Power Stat s Config Scale Enters the maximum value of the power scale as reference Power div Stat s Config Scale Defines the scaling of the power axis Y Start Stat s Config Scale Enters the start value of the Y axis Depending on the distribution function only a restricted range of ...

Page 142: ...nables you to numerically position the markers X Marker Stat s Config Marker Defines the position of the power marker in dBm or in dB dB is used in the case of a normalized X axis Y Marker Stat s Config Marker Defines the position of the result marker in CDF CCDF or dimensionless PDF 4 5 8 3 Statistic function settings Set the function of the statistics measurement in the Stat s Function dialog bo...

Page 143: ...he X axis in terms of absolute power dBm if activated Normalizes the X axis with respect to average power dB if deactivated Trace 1 2 Selects tab Trace 1 or Trace 2 to configure the statistic measurement for the 1st or 2nd trace An internal AWGN source is available for the second trace thus providing a standard signal reference Channel Selects the channel for the respective trace A statistical eva...

Page 144: ... settings for mobile radio standards on page 142 Programming aids on page 144 Assigning names to windows on page 144 4 6 1 Default setting The Preset softkey in the File menu and the PRE SET hardkey change the R S NRP2 to its default setting After Preset the sensors operate in Cont Av mode with sensor specific aperture time 4 6 2 Storing user defined settings The R S NRP2 provides 19 memory spaces...

Page 145: ...box in the File menu is used to load stored settings Fig 4 68 Recall Setup dialog box Select setting Selects a setting Recall Loads the selected setting After the settings are loaded successfully the dialog box closes automatically The same effect can be achieved by pressing the MENU key Remote command RCL on page 198 4 6 4 Loading settings for mobile radio standards Predefined settings for the mo...

Page 146: ...d the measurement windows are not reconfigured Remote command SYSTem STANdard PWSettings on page 327 External Trigger If enabled an external trigger is required If disabled the internal trigger is used External triggering should be selected if the test signal yields no clearly defined or only an unstable trigger event Note If external triggering is used in the timeslot mode make sure that the trig...

Page 147: ...e remote state the menu bar is replaced and the error list can be opened with the topmost softkey DEL If the Error List is open the error queue of the R S NRP2 can be deleted by pressing the DEL 1TRIG hardkey Remote command DISPlay ERRorlist on page 239 To activate extended error messages SYSTem ERRor EXTended STATe on page 323 4 6 6 Assigning names to windows Each display window is automatically ...

Page 148: ...cess to the following settings Configuring the remote control interfaces on page 145 Setting analog outputs on page 151 Power Reference on page 158 System information on page 158 Miscellaneous on page 160 Test measurement on page 161 4 7 1 Configuring the remote control interfaces The R S NRP2 provides different interfaces for remote control The settings are con figured in the Remote Interfaces di...

Page 149: ...ts VXI 11 proto col see chapter 4 7 1 4 VXI11 settings on page 149 for set ting the IP address For description of the interface refer to chapter A 2 2 1 VXI11 protocol on page 358 Local Area Network LAN Ethernet socket com munication e g Raw Ethernet simple telnet VISA address string TCPIP host address LAN device name INSTR A LAN connector is located at the rear panel of the instrument The interfa...

Page 150: ...for information in detail Ethernet Activates remote control via Ethernet using socket communication see chapter 4 7 1 5 Raw Ethernet socket communication settings on page 150 Command Set Selects the instrument type whose remote command set is emulated by the R S NRP2 Note The number of supported emulations is limited with the current firmware version V07 01 Fig 4 73 List of instruments emulated by...

Page 151: ...20 Command Set Selects the instrument type for emulation see Command Set on page 147 4 7 1 3 USB settings Remote control of the R S NRP2 via the USB is performed according to the USBTMC standard For this purpose a VISA library that supports remote control via the USB is required by the remote control computer Fig 4 75 Remote Interfaces USB VISA Resource Identifier Displays the VISA address string ...

Page 152: ... in the IP Config dialog box IP Config Assigns the IP address either manually or automatically Manual IP Config Sets address mask and gateway Fig 4 77 IP Config dialog box Manual For the manual configuration mode the static IP address subnet mask and default gateway are used to configure the LAN Obtain the IP address and subnet mask for the R S NRP2 and the IP address for the local default gateway...

Page 153: ...etwork communication using sockets The socket communication also referred as Raw Ethernet communication does not require a VISA installation on the remote controller side The simplest way to establish socket communication is to use the build in telnet pro gram The telnet program is part of every operating system and supports a communi cation with the software on a command by command basis For bett...

Page 154: ...dress see IP Address Manual DHCP on page 149 PortNo Inserts the port number configured for remote control Command Set Selects the instrument type for emulation see Command Set on page 147 4 7 2 Setting the analog outputs and the trigger input There are two multifunction BNC connectors at the rear of the R S NRP2 TRIG IN OUT2 and OUT1 TRIG OUT They can be used as either trigger input or trigger out...

Page 155: ...ctor and their settings Fig 4 81 I O dialog box Out1 tab Mode Selects the function of the OUT1 TRIG OUT connector Analog Pass Fail Trig Out and Off are available Note For remote control only suffix 1 or no suffix is allowed in the command header for the setting the OUT 1 TRIG OUT connector functions Analog Mode The output provides an analog voltage which is proportional to the value displayed in t...

Page 156: ...Entry of the measurement value that corresponds to the output voltage of 0 V Remote command OUTPut RECorder 1 2 LIMit LOWer on page 256 OUTPut RECorder 1 2 LIMit LOWer POWer on page 256 OUTPut RECorder 1 2 LIMit LOWer RATio on page 256 3 V Equivalent Analog Analog Mode Entry of the measurement value that corresponds to the output voltage of 3 V Remote command OUTPut RECorder 1 2 LIMit UPPer on pag...

Page 157: ...alue range is 0 V to 3 3 V Remote command The setting is achieved by a combination of the following commands The example is for OUTPut TTL FAIL set to HIGH OUTPut TTL FAIL on page 258 OUTPut TTL HVOLtage on page 259 OUTPut TTL ACTive on page 258 Fail Pass Fail Mode Sets the logic output level for limit violation of measurement results The value range is 0 V to 3 3 V Remote command The setting is a...

Page 158: ...nchronize externally connected instruments Remote command OUTPut TRIGger STATe on page 260 Off Mode Deactivates port OUT1 TRIG OUT Fig 4 85 Out1 mode Off Remote command Both states have to be set OFF OUTPut RECorder 1 2 STATe on page 258 OUTPut TTL STATe on page 260 4 7 2 2 I O 2 interface This section describes the functions and settings of the analog trigger input analog output at the TRIG IN OU...

Page 159: ...roportional to the value displayed in the selected window e g Window 1 Fig 4 87 I O 2 mode Analog Out Remote command The state must be set to ON OUTPut RECorder 1 2 STATe on page 258 Window 1 2 3 4 Analog Out Mode Selects the window the output refers to Only windows that are operated in Dig or D A window mode are available for selec tion See chapter 4 3 3 3 Selecting the result display mode on pag...

Page 160: ...figured accordingly it passes the signal directly through to the sensors Refer to chapter 4 2 6 Trigger settings on page 85 for infor mation on the respective settings Remote command The state must be set to OFF OUTPut RECorder 1 2 STATe on page 258 4 7 2 3 Voltage at the analog outputs The voltage at the analog outputs does not track the power fed to the sensor continu ously but rather at discret...

Page 161: ... 7 5 Miscel laneous on page 160 4 7 3 Sensor Check Source The Sensor Check Source option R S NRP B1 B7 supplies an accurate 1 mW test signal at 50 MHz Option R S NRP B7 comes with an additional pulse mode of the test signal with a modulation frequency of 10 kHz It can arbitrarily be switched on and off or be used in course of automatic test measurements see chapter 4 7 6 Test measurements on page ...

Page 162: ...1 4 i e choose suffix 1 for channel A channel 2 for B and so on Sensor info The sensor info dialog shows the information on the selected sensor Remote command SYSTem SENSor 1 4 INFO on page 326 4 7 4 2 Information on the R S NRP2 Select System Info in the System menu Fig 4 91 System info dialog System info The system info dialog displays information concerning hardware and firmware of your R S NRP...

Page 163: ...size Flash Flash memory size holding the operating system the firmware and the stored data non volatile CPU Clock Frequency of the CPU clock CPLD Version of the CPLD Complex Programmable Logic Device PIC Version of the keyboard controller Remote command SYSTem INFO on page 322 4 7 5 Miscellaneous The Misc dialog box covers useful parameters for manual measurements such as the display update rate o...

Page 164: ...s not desired it can explicitly and exclusively for any window be switched off in the limits dialog see chapter 4 4 5 Limit Monitoring on page 111 Display Update Selects the display refresh rate At very low ambient temperatures the display becomes sluggish To improve readabil ity under these circumstances you can reduce the display update rate Normal standard display update rate Slow preferred set...

Page 165: ...rol commands select the sensor with the suffix in command SENSe 1 4 i e choose suffix 1 for channel A channel 2 for B and so on Selftest internal with no signal Starts a selftest of the sensor A signal must not be applied The instrument indicates the corresponding states to internal self test directly in the menu not tested prior to testing running in progress successful outcome failed outcome Tes...

Page 166: ... B7 test generator option In the case of sensors with a lead in attenuator pad R S NRP Z22 R S NRP Z23 and R S NRP Z24 the test measurement can be made with or without an attenuator Since the power sensors of the R S NRP Z series are absolutely calibrated a regular calibration measurement after switching on the instrument is not necessary and also not planned The outcome of the tests is not consid...

Page 167: ...connected to the sensor check source With multipath sensors only one path can be used for the measurement For testing all paths remove the attenua tor connect the sensor section alone and start the test by pressing Test at Power Ref Report Opens the dialog box displaying the results of the test measurement The test report shows the type and the serial number of the tested sensor and the detailled ...

Page 168: ... dialog box for entering tolerance limits Fig 4 100 Config Test dialog box Exceeding the tolerance limits will result in a test failure The factory set default set tings depend on the sensor and are in line with the data sheet values They are appli cable in the entire ambient temperature range If the base unit and the sensors are not used at temperature extremes the tolerance limits can be restric...

Page 169: ...ount of power and the duration of the overload condition The upper measurement limit is specified in the data sheet for the sensor and can be displayed in the Sensor Info dialog box see chapter 4 7 4 System information on page 158 An alarm sounds when the message is displayed The alarm can be disabled in the Misc dialog box see chapter 4 7 5 Miscellaneous on page 160 Overrange Fig 4 102 Error mess...

Page 170: ...n thus be incorrect Trunc Meas Fig 4 104 Error message Trunc Meas Trunc Meas is displayed in Burst Av mode when there is an overflow of the sensor internal buffer for samples Overflow occurs if a burst is too long The measurement is aborted HW Error Fig 4 105 Error message HW Error A sensor has detected a hardware error Messages and alarms 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq c...

Page 171: ...ew Window If an additional sensor is connected to the R S NRP2 during operation and if no cur rently open window displays the values measured in the channel concerned the R S NRP2 automatically offers to open a window and to configure it for measurements with the additional sensor connected The previous settings of the newly opened window are lost To prevent this we recom mend you to cancel with t...

Page 172: ... that certain parameters are assigned default values that cannot be changed and that specific changes of device settings influence other set tings In the remote control mode all settings can be changed and the user has to make sure that the device is correctly set for the measurement to be performed We therefore recommend performing a reset RST on page 198 or SYSTem PRESet on page 325 prior to a r...

Page 173: ...ower sensors can be assigned The channels can be processed together by means of a selectable function The result is available at the output of the calculate block In the manual mode the measurement results of the first four calculate blocks chapter 6 5 CALCu late Configuration of Calculate Blocks on page 224 are shown in windows 1 to 4 while 8 calculate blocks are available in the remote control m...

Page 174: ...net mask which are known to the network administra tor Ethernet configuration 1 Select Ethernet as the active interface 2 Choose Manual or DHCP IP address configuration If DHCP is chosen IP address subnet mask and gateway address are retrieved from a DHCP server The DCHP server must be available in the network No fur ther steps are required 3 If Manual is selected enter the IP address assigned by ...

Page 175: ...hover to Remote Control REMOTE It is assumed that a link has been established between the controller and the R S NRP2 has been correctly configured After power up the R S NRP2 is always in manual control mode LOCAL The R S NRP2 switches to remote control irrespective of the selected interface as soon as it receives a SCPI command All settings are maintained when the device switches to remote mode ...

Page 176: ...LCulate block where is set as an output unit UNIT POWer RATio DPCT UNIT POWER RATio O is set The automatic storage of the instru ment settings is deactivated in the nonvolatile memory The automatic storage of the instrument settings is reactivated in the nonvolatile memory SYST SPEED NORMal SENS BUFF STAT OFF SENS AVER STAT ON SENS TRACe AVER STAT ON SENS AVER COUNt AUTO OFF ContAv TRIG DEL 0 TRIG...

Page 177: ...us when the ATN control line is not active The ASCII code is used Device dependent messages are classified according to the direction in which they are sent 5 6 2 1 Commands Commands are messages sent by the controller to the R S NRP2 They control the device functions and request information The commands are classified according to the effect they have on the device Setting commands trigger device...

Page 178: ...ossible For this purpose a device model has been devel oped which defines identical functions within a device or between different devices Command systems have been created and assigned to these functions so that it is possible to address identical functions with the same commands The command sys tems have an hierarchical structure The SCPI command tree figure 5 1 shows this tree structure using d...

Page 179: ...ueries the contents of the standard event status register 5 7 2 2 Device specific Commands Hierarchy Device specific commands have a hierarchical structure see SCPI command tree fig ure 5 1 The various levels are represented by compound headers Headers at the highest level root level have one keyword only This keyword describes an entire command system Example SENSe 1 4 This keyword denotes the co...

Page 180: ...off set for the display of points in the Trace mode Optional keywords In some command systems certain keywords can be inserted into or removed from the header These keywords are shown in the manual in square brackets For reasons of compatibility with the SCPI standard the device must be able to recognize the full length of the command Some of the commands become considerably shorter when the optio...

Page 181: ...QUES ENAB 1 Parameters The parameter must be separated from the header by a white space If a command contains several parameters they have to be separated by a comma Some of the commands allow the specification of the parameters MINimum MAXimum and DEFault For a description of the parameter types chapter 5 7 5 Parameters on page 180 Example TIMing EXCLude STARt MINimum Response 0 This query asks f...

Page 182: ...ted in this case Example SENSe2 TIMing STARt 10 SENSe2 TIMing STOP 10 This program message contains two commands separated by a semicolon Both com mands belong to the SENSe system and its TIMing subsystem i e they have two common levels In the abbreviated program message the second command starts at the level below SENSe TIMing The colon after the semicolon has to be omitted The short form of the ...

Page 183: ...se DBM 5 7 5 Parameters Most commands require the specification of a parameter Parameters must be separa ted from the header by a white space Parameters may be specified as numeric val ues Boolean parameters character data strings or block data The type of parameter required for the specific command as well as the permissible value range are descri bed together with the commands Numeric values Num...

Page 184: ...onse to a query Example Command SENSe2 POWer APERture MAXimum Query SENSe2 POWer APERture Response 1 000000E02 MIN MAX MINimum and MAXimum denote the minimum and maximum value DEF DEFault denotes a preset value This value is identical to the basic setting called by the RST command NAN Not A Number NAN stands for 9 91E37 NAN is only sent as a device response This value is not defined NAN is typical...

Page 185: ...th a block data parameter has the following structure Example DISPlay PIXMap Response 49600xxxxxxxx The ASCII character denotes the beginning of the data block The next numeral specifies the number of subsequent digits defining the length of the data block In the example above the four digits specify a length of 9600 bytes The data bytes follow next During transmission of these data bytes all term...

Page 186: ...f the data is verified and the setting is adapted Only after the command has been com pletely executed will the next command be processed 5 8 3 Data Base and Device Hardware The term device hardware refers to that part of the device which performs the mea surement function The data base contains all parameters required for setting the device hardware Set ting commands cause a modification of the d...

Page 187: ...PC OPC and WAI Command Effect Programming of controller OPC Sets the Operation Complete bit in the ESR after all commands sent prior to OPC have been processed Set bit 0 in the ESE of the R S NRP2 Set bit 5 in the SRE of the R S NRP2 Wait for service request SRQ OPC Writes 1 in the output buffer after all com mands sent prior to OPC have been pro cessed IEC IEEE bus the R S NRP2 is addressed as a ...

Page 188: ...TRIGger 1 4 SOURce Unchanged is irrelevant TRIGger 1 4 SLOPe Unchanged is irrelevant TRIGger 1 4 COUNt 1 Cannot be modified in manual mode TRIGger 1 4 DELay Unchanged is irrelevant TRIGger 1 4 HOLDoff Depends on sensor User selectable TRIGger 1 4 LEVel Depends on sensor User selectable SENSe 1 4 TIMing EXCLude STARt Depends on sensor User selectable SENSe 1 4 TIMing EXCLude STOP Depends on sensor ...

Page 189: ...TRIGger 1 4 SOURce EXTernal INTernal User selectable TRIGger 1 4 SLOPe POSitive NEGative User selectable TRIGger 1 4 COUNt 1 Cannot be modified in manual mode TRIGger 1 4 DELay 0 S Cannot be modified in manual mode TRIGger 1 4 HOLDoff Depends on sensor User selectable TRIGger 1 4 LEVel Depends on sensor User selectable SENSe 1 4 TIMing EXCLude STARt 0 S Cannot be modified in manual mode SENSe 1 4 ...

Page 190: ... Mode Timeslot Fence Start SENS 1 4 TSL EXCL MID OFFS Sensor Mode Timeslot Fence Length SENS 1 4 TSL EXCL MID TIME Sensor Mode T gate Gate SENS 1 4 TGAT SEL Sensor Mode T gate Start of Gate SENS 1 4 TGAT 1 4 OFFS TIME Sensor Mode T gate Length SENS 1 4 TGAT 1 4 TIME Sensor Mode T gate Fence Start SENS 1 4 TGAT 1 4 EXCL MID OFFS Sensor Mode T gate Fence Length SENS 1 4 TGAT 1 4 EXCL MID TIME Sensor...

Page 191: ... 1 4 AVER COUN AUTO NSR In Trace mode SENS 1 4 TRAC AVER COUN AUTO NSR Sensor Filter Auto Config Fixed Noise Max Settl Time SENS 1 4 AVER COUN AUTO MTIM In Trace mode SENS 1 4 TRAC AVER COUN AUTO MTIM Sensor Range Auto SENS 1 4 RANG AUTO Sensor Range Path SENS 1 4 RANG Sensor Range User def d Transition Sensor Range Level SENS 1 4 RANG CLEV Sensor RF Source Source Γ considered SENS 1 4 SGAM CORR S...

Page 192: ...SP 1 4 ANAL UPP Measurement Function Primary Channel Measurement Function Secondary Chan nel Measurement Function Function CALC 1 8 MATH EXPR Measurement Function Unit UNIT POW and UNIT POW RAT Measurement Function Auxiliary Value Max Min Max Min DISP 1 8 AVAL CALC 1 8 MAX DATA CALC 1 8 MIN DATA CALC 1 8 PTP DATA Measurement W dBm dBµV UNIT POW Measurement dB Δ 1 UNIT POW RAT Measurement Rel On Of...

Page 193: ...PIB Address SYST COMM GPIB ADDR System I O Out 1 1234 OUTP REC1 FEED or OUTP TTL FEED System I O Out 1 Analog OUTP REC1 STAT ON System I O Out 1 Pass Fail OUTP TTL STAT ON System I O Out 1 Off OUTP REC1 STAT ON OUTP TTL STAT ON System I O Out 1 0 V Equivalent if Ana log is selected OUTP REC1 LIM LOW System I O Out 1 3 V Equivalent if Ana log is selected OUTP REC1 LIM UPP System I O Out 1 Fail if P...

Page 194: ...ds a TRG to the sensor PRE SET Opens the File menu FREQ SENS 1 4 FREQ ZERO CAL CAL ZERO AUTO Sensor Mode Trace Statistics Windows Graph Trace Config Display SENS 1 4 AUX Sensor Mode Trace Statistics Windows Graph Stats Config Scale x Max SENS 1 4 STAT SCAL X RLEV and SENS 1 4 STAT SCAL X RANG Sensor Mode Trace Statistics Windows Graph Stats Config Scale x Min SENS 1 4 STAT SCAL X RLEV Sensor Mode ...

Page 195: ... PULS PER SENS TRAC MEAS PULS DCYC SENS TRAC MEAS TRAN POS DUR SENS TRAC MEAS TRAN NEG DUR SENS TRAC MEAS TRAN POS OCC SENS TRAC MEAS TRAN NEG OCC SENS TRAC MEAS POW PULS TOP SENS TRAC MEAS POW PULS BAS SENS TRAC MEAS POW AVG SENS TRAC MEAS POW MAX SENS TRAC MEAS POW MIN SENS TRAC MEAS TRAN POS OVER SENS TRAC MEAS TRAN NEG OVER Sensor Mode Trace Statistics Windows Graph Config Pulse Configure Algo...

Page 196: ...e command systems permit certain keywords to be inserted into the header or omitted These keywords are marked by square brackets in the description The instru ment must recognize the long command to comply with the SCPI standard Some com mands are considerably shortened by these optional mnemonics Therefore not only is there a short and a long form for the commands distinguished here by lowercase ...

Page 197: ...45553e 6 int_value Is an abbreviation for NR1 MINimum MAXimum DEFault float_value Is an abbreviation for NRf MINimum MAXimum DEFault boolean Stands for ON OFF 0 1 where ON and 1 are identical in meaning as are OFF and 0 string Stands for character strings that have to be within single or double quotes Examples free text Sirius block_data Stands for block data chapter 5 7 5 Parameters on page 180 n...

Page 198: ...s resets the status byte STB standard event register ESR EVENt part of the QUEStionable and the OPERation register Error event queue The command does not alter the ENABle and TRANsition parts of the registers Usage Event ESE value Setting command ESE Event Status Enable sets the event status enable register to the specified value Query ESE The query form ESE returns the contents of the event statu...

Page 199: ...uery only IST status_bit Individual STatus query returns the current value of the IST flag in decimal form The IST flag is the status bit which is sent during a parallel poll chapter 6 13 6 IST Flag and Parallel Poll Enable Register PPE on page 305 Parameters StatusBit 0 1 Usage Query only OPC Setting Command OPC OPeration Complete sets bit 0 in the event status register after all preceding com ma...

Page 200: ... S NRP B1 NRP B1 Test generator installed R S NRP B2 NRP B2 Second channel interface installed R S NRP B5 NRP B5 Four channel interface installed R S NRP B6 NRP B6 Sensor A B rear socket R S NRP B7 NRP B7 Test generator installed Example OPT Device response NRP B1 Test Generator installed NRP B2 Second Channel Interface installed NRP B5 Four Channel Interface installed Usage Query only PRE value S...

Page 201: ...t of RCL 0 to 19 is the same as if one of the setups 0 to 19 had been selected in manual control RCL 0 resets the device to the default state Parameters Value 1 to 19 Available recall numbers for device setups Usage Event RST ReSeT sets the instrument to a defined default status The command essentially corre sponds to command SYSTem PRESet and to pressing PRE SET The following table documents the ...

Page 202: ...nts CALC 1 8 LIM LOW STAT OFF No monitoring function for lower limit value CALC 1 8 MATH For command description see page 231 The calculate block returns the measured value of the sensor assigned to the primary channel CALC 1 8 REL 0 DBM or 0 DB CALC 1 8 REL POW 0 DBM CALC 1 8 REL RAT 0 DB CALC 1 8 REL STAT OFF Measurements are not converted into a reference value DISP ILL Display lighting remains...

Page 203: ...ode DISP 1 4 TSL 1 First timeslot DISP 1 4 UPD NORM Frequent display updates FORM ASC Measured data in ASCII format FORM BORD NORM Big Endian byte sequence of measured data if FORMat REAL is selected INIT 1 4 ALL CONT ON OFF PRES and SYSTem PRESet RST INIT 1 4 ALL DIS OFF MEM The settings in the MEMory com mand system will not be affected OUTP REC1 FEED CALC1 Analog outputs are fed by the first ca...

Page 204: ...ng on sensor SENS 1 4 AVER ON OFF Depending on sensor SENS 1 4 AVER COUN NR1 Depending on sensor SENS 1 4 AVER COUN AUTO ON OFF Depending on sensor SENS 1 4 AVER COUN AUTO MTIMe NRf Depending on sensor SENS 1 4 AVER COUN AUTO RES NRf Depending on sensor SENS 1 4 AVER COUN AUTO SLOT NR1 Depending on sensor SENS 1 4 AVER COUN AUTO NSR NRf Depending on sensor SENS 1 4 AVER COUN AUTO TYPE RES NSR Depe...

Page 205: ...ng on sensor SENS 1 4 TGAT 1 4 OFFS TIME NRf Depending on sensor SENS 1 4 TGAT SEL 1 SENS 1 4 TGAT 1 4 TIME NRf Depending on sensor SENS 1 4 TSL CHOP ON OFF Depending on sensor SENS 1 4 TSL COUNt NR1 Depending on sensor SENS 1 4 TSL MID OFFS NRf Depending on sensor SENS 1 4 TSL MID ON OFF Depending on sensor SENS 1 4 TSL MID TIME NRf Depending on sensor SENS 1 4 TSL WIDTh NRf Depending on sensor S...

Page 206: ...nding on sensor SENS 1 4 TRAC AVER COUN AUTO MTIMe NRf Depending on sensor SENS 1 4 TRAC AVER COUN AUTO RES NRf Depending on sensor SENS 1 4 TRAC AVER COUN AUTO POIN NR1 Depending on sensor SENS 1 4 TRAC AVER COUN AUTO NSR NRf Depending on sensor SENS 1 4 TRAC AVER COUN AUTO TYPE RES NSR Depending on sensor SENS 1 4 TRAC AVER TCON MOV REP PRES and SYSTem PRESet RST SENS 1 4 TRAC OFFS TIME NRf Depe...

Page 207: ...n sensor TRIG 1 4 ALL SOUR IMM HOLD EXT INT BUS Depending on sensor UNIT 1 8 POW DBM Logarithmic result scaling UNIT 1 8 POW RAT DB Logarithmic result scaling Usage Event SAV value SAVe stores the current device state under the specified number Parameters Value 1 to 19 Available storage numbers for device setups Usage Event SRE value Setting command SRE Service Request Enable sets the service requ...

Page 208: ...ble 6 3 Error messages 211 Trigger ignored No sensor is in the WAIT_FOR_TRG state 211 Trigger ignored A sensor is in the WAIT_FOR_TRG state but the trigger source is not BUS Usage Event TST error code Self TeST query triggers the self test of the instrument and outputs an error code in decimal form Parameters error code 0 1 0 no error 1 an error has occurred Usage Query only WAI WAIt to continue p...

Page 209: ...ve gives an overview of the SCPI command systems of the R S NRP2 The measured values are forwarded to the SENSe block where they are processed and handed to the CALCulate blocks The values from the SENSe block are not immediately made available to the user but only after they have been processed in the CALCulate blocks In the CALCulate blocks the values of several sensors can be processed together...

Page 210: ...the operation of the R S NRP2 TRIGger Configures timing conditions for start of measurement UNIT Sets output unit of the measured values 6 3 1 SENSe System Fig 6 2 SENSe system This command system is used for configuring the sensors and determines the process ing of measured data in the sensors The blocks have the following functions SENSe Block Function RANGe Shifts the range boundaries to increa...

Page 211: ...er A calculation function can be selected for this purpose with the aid of MATH EXPRession The result can then be correlated to a reference value RELative before it is made available to the user by the UNIT block Measured val ues can be monitored with the LIMit commands 6 4 High Level Measurement Commands CONFigure MEASure READ and FETCh 6 4 1 High level measurement commands The high level measure...

Page 212: ...level commands which con tain TSLot in the header e g MEASure TSLot With high level command in addition to selecting the measurement mode several presettings for this mode are per formed Selection of the calculation function Sum is performed with low level command CALCulate MATH SENS1 SENS2 or by all high level commands which contain SUM in the header e g MEASure TSLot SUM Quantative parameters su...

Page 213: ... command respectively Since the device settings can be changed after a CONFigure the query does not return the current device setup CONFigure is performed internally mostly by SENSe and CALCulate commands One or several measurement channels are configured as follows Command Measurement mode ContAv Burst Timeslot Trace Statis tics INIT CONT OFF OFF OFF OFF TRIG SOUR IMM INT EXT EXT TRIG COUN 1 1 1 ...

Page 214: ...t is returned and the command is aborted Apart from this check READ cor responds to the program message INIT IMM FETCh 1 8 MEASure The MEASure command combines CONFigure and READ Refer to annex chapter A 4 Programming Measurements on page 379 for applica tion examples to the high level measurement commands 6 4 2 Basic Commands FETCh and READ FETCh The command FETCh without further keywords and par...

Page 215: ..._function calc_function These keywords select the calculation function see also the low level commandCALCulate 1 8 MATH EXPRession on page 231 If calc_function is not specified the measured value of the primary channel is output Command keywords RELative DIFFerence DIFFerence RELative SUM SUM RELative RATio RATio RELative RLOSs SWR REFLection The terminates the measurement commands which are alway...

Page 216: ...order buffered_size Value range depending on sensor Default value depending on sensor Unit Number of requested measured values Corresponds to command SENSe 1 4 POWer AVG BUFFer SIZE on page 272 capture_time Value range depending on sensor Unit S Default value depending on sensor Period within which measured data are captured in the Trace mode Corre sponds to command SENSe 1 4 TRACe TIME on page 29...

Page 217: ...solution Value range 1 0 1 0 01 0 001 1 2 3 4 Default value 3 0 01 Specifies the limit up to which the measurement result should be free of noise The R S NRP2 tries to set an adequate window for the averaging filter This does not affect the accuracy of the measured data The window can only be set if automatic setting of the filter window has not been disabled by the user SENSe AVERage COUNt AUTO O...

Page 218: ...and SENSe 1 4 TIMing EXCLude STARt on page 283 statistics_size Value range depending on sensor Default value depending on sensor Unit The number of test points on the time axis Corresponds to command SENSe 1 4 STATistics SCALe X POINts on page 282 tslot_width Unit S Value range depending on sensor RST value depending on sensor Width of a timeslot in the Timeslot mode Corresponds to command SENSe 1...

Page 219: ...s means that two sensors must be specified in source_list This also applies to the following functions DIFFerence RELative value _ reference SC PC The difference between the PC and SC is divided by the reference value SUM SC PC Yields the sum of the PC and SC The source_list must therefore contain two sen sors This also applies to the following functions SUM RELative value _ reference SC PC The su...

Page 220: ...alcula tion functions High level commands on page 215 and chapter 6 4 4 Parameter list description on page 212 CONFigure 1 8 SCALar POWer AVG CONFigure 1 8 SCALar POWer AVG RELative CONFigure 1 8 SCALar POWer AVG DIFFerence CONFigure 1 8 SCALar POWer AVG DIFFerence RELative CONFigure 1 8 SCALar POWer AVG SUM CONFigure 1 8 SCALar POWer AVG SUM RELative CONFigure 1 8 SCALar POWer AVG RATio CONFigure...

Page 221: ... end_exclude expected_value resolution source_list CONFigure commands for measurement mode Burst CONFigure 1 8 ARRay POWer AVG CONFigure 1 8 ARRay POWer AVG RELative CONFigure 1 8 ARRay POWer AVG DIFFerence CONFigure 1 8 ARRay POWer AVG DIFFerence RELative CONFigure 1 8 ARRay POWer AVG SUM CONFigure 1 8 ARRay POWer AVG SUM RELative CONFigure 1 8 ARRay POWer AVG RATio CONFigure 1 8 ARRay POWer AVG ...

Page 222: ...6 4 4 Parameter list descrip tion on page 212 FETCh 1 8 SCALar POWer AVG FETCh 1 8 SCALar POWer AVG RELative FETCh 1 8 SCALar POWer AVG DIFFerence FETCh 1 8 SCALar POWer AVG DIFFerence RELative FETCh 1 8 SCALar POWer AVG SUM FETCh 1 8 SCALar POWer AVG SUM RELative FETCh 1 8 SCALar POWer AVG RATio FETCh 1 8 SCALar POWer AVG RATio RELative FETCh 1 8 SCALar POWer AVG SWR FETCh 1 8 SCALar POWer AVG RE...

Page 223: ...on source_list FETCh commands for measurement mode Burst FETCh 1 8 ARRay POWer AVG FETCh 1 8 ARRay POWer AVG RELative FETCh 1 8 ARRay POWer AVG DIFFerence FETCh 1 8 ARRay POWer AVG DIFFerence RELative FETCh 1 8 ARRay POWer AVG SUM FETCh 1 8 ARRay POWer AVG SUM RELative FETCh 1 8 ARRay POWer AVG RATio FETCh 1 8 ARRay POWer AVG RATio RELative FETCh 1 8 ARRay POWer AVG SWR FETCh 1 8 ARRay POWer AVG R...

Page 224: ...list READ commands for measurement mode ContAv READ 1 8 SCALar POWer TSLot READ 1 8 SCALar POWer TSLot RELative READ 1 8 SCALar POWer TSLot DIFFerence READ 1 8 SCALar POWer TSLot DIFFerence RELative READ 1 8 SCALar POWer TSLot SUM READ 1 8 SCALar POWer TSLot SUM RELative READ 1 8 SCALar POWer TSLot RATio READ 1 8 SCALar POWer TSLot RATio RELative READ 1 8 SCALar POWer TSLot SWR READ 1 8 SCALar POW...

Page 225: ...READ commands for measurement mode Trace READ 1 8 STATistics CCDF READ 1 8 STATistics PDF statistics_size capture_time source_list READ commands for measurement mode Statistics 6 4 9 MEASurement commands This chapter lists all MEASurement commands For a description of the command syn tax the calculation functions and the parameter list see chapter 6 4 3 Syntactical Structure of High Level Measurem...

Page 226: ...ment 1 8 SCALar POWer BURSt MEASurement 1 8 SCALar POWer BURSt RELative MEASurement 1 8 SCALar POWer BURSt DIFFerence MEASurement 1 8 SCALar POWer BURSt DIFFerence RELative MEASurement 1 8 SCALar POWer BURSt SUM MEASurement 1 8 SCALar POWer BURSt SUM RELative MEASurement 1 8 SCALar POWer BURSt RATio MEASurement 1 8 SCALar POWer BURSt RATio RELative MEASurement 1 8 SCALar POWer BURSt SWR MEASuremen...

Page 227: ... 4 depending on device configuration and connected sensors can be assigned to the channels With the aid of a selectable function CALC MATH the channels can be pro cessed together Suffix 1 8 behind the CALCulate key word denotes the CALCulate block Each CALCulate block is assigned a measurement window The R S R S NRP2 can dis play up to four windows with measurement results In the digital Dig and d...

Page 228: ...ive STATe 234 CALCulate 1 8 SDEViation DATA 234 CALCulate 1 4 STATistics MARKer HORIzontal POSition X POWer 235 CALCulate 1 4 STATistics MARKer HORizontal DATA 235 CALCulate 1 4 STATistics MARKer VERTical POSition Y 235 CALCulate 1 4 STATistics MARKer VERTical DATA POWer 235 CALCulate 1 4 STATistics POWer AVG DATA 236 CALCulate 1 8 TRACe MARKer XDELta 236 CALCulate 1 8 TRACe MARKer YDELta 236 CALC...

Page 229: ...easure ment mode string Meaning ContAv POWer AVERage POWer PEAK POWer RANDom Average value Peak value Randomly selected value from the measurement interval Burst POWer AVERage POWer PEAK POWer RANDom Average value Peak value Randomly selected value from the measurement interval Timeslot POWer AVERage POWer PEAK POWer RANDom Average value Peak value Randomly selected value from the measurement inte...

Page 230: ...e 1 8 LIMit BEEP beep Switches the acoustic warning for limit violations on or off Parameters beep ON OFF RST OFF Usage Setting only CALCulate 1 8 LIMit CLEar IMMediate Resets the limit monitoring state and the internal counter for limit violations Usage Event CALCulate 1 8 LIMit CLEar AUTO auto Automatically resets the limit monitoring state and the internal counter for limit viola tions if any o...

Page 231: ... occurred The counter is zeroed if one of the following events occurs The device is switched on A reset is performed RST The CALCulat 1 8 LIMit CLEar command is sent Usage Query only CALCulate 1 8 LIMit LOWer DATA lower_limit Sets a lower limit for the measured values The R S NRP2 can respond when the val ues drop below this limit see other CALCulate 1 8 LIMit commands Parameters lower_limit float...

Page 232: ... Default unit DBM CALCulate 1 8 LIMit LOWer DATA RATio ratio Sets a lower limit for the measured power ratios The R S NRP2 can respond when the ratios drop below this limit see other CALCulate 1 8 LIMit commands Parameters ratio float_value units DB DBCT O Range 200 DB to 200 DB RST 0 DB Default unit DB CALCulate 1 8 LIMit LOWer STATe state Switches the monitoring function for theupper and lower l...

Page 233: ...e 1 8 LIMit UPPer DATA POWer power Sets a upper limit for the measured power The R S NRP2 can respond when this limit is exceeded see other CALCulate 1 8 LIMit commands Parameters power float_value units DBM W DBUV Range 120 DBM to 90 DBM RST 0 DBM Default unit DBM CALCulate 1 8 LIMit UPPer DATA RATio ratio Sets an upper limit for the measured power ratios The R S NRP2 can respond when this limit ...

Page 234: ...calculate block outputs the sum of the measured values of sensor n and sensor m SENSn SENSm The calculate block outputs the quotient of the values measured by sensor n and m SWR SENSn SENSm SENSn SENSm SENSn SENSm 1 1 If sensor n measures the forward power of a wave and sensor m the reflected power the calculate block outputs the standing wave ratio of this wave The output unit is set to percent U...

Page 235: ...rred in this calculate block The limit value is set to the current measured value when the device is switched on a reset is performed RST the value is explicitly set to the current measured value using the command CALCulate 1 8 EXTRemes RESet The unit is the current unit of the measured result Possible Units W DBM DBUV DPCT DB O Usage Query only CALCulate 1 8 MEAN DATA Queries the mean value of al...

Page 236: ... MATH CALC REL STAT OFF CALC REL STAT ON SENSn DBM W DBUV DB DPCT O SENSn SENSm DBM W DBUV DB DPCT O SENSn SENSm DBM W DBUV DB DPCT O SENSn SENSm DB DPCT O DB DPCT O SWR SENSn SENSm O REFL SENSn SENSm O RLOS SENSn SENSm DB The value range depends on the current output unit of the calculate block s measured value as shown in table 6 10 Value ranges depending on the unit Parameters value float_value...

Page 237: ...0 DB 1e 18 1e22 PCT RST 0 DB Default unit DB CALCulate 1 8 RELative STATe state Determines whether a reference value is used If this command is called with ON all results of the calculate block are divided by the reference value set with CALCulate 1 8 RELative MAGNitude Parameters state ON OFF ON all results of the calculate block are divided by the reference value set with CALCulate 1 8 RELative ...

Page 238: ...M CALCulate 1 4 STATistics MARKer HORizontal DATA Is available with statistics measurements CCDF and PDF It returns the value of the statistics function at the position of the marker if the value is valid Unit O Usage Query only CALCulate 1 4 STATistics MARKer VERTical POSition Y position Is available with statistics measurements CCDF and PDF It sets the vertically shifta ble marker on the statist...

Page 239: ...IME Units DBM W DBUV Usage Query only CALCulate 1 8 TRACe MARKer XDELta Is available with trace measurements It returns the time difference of the two curve markers if the value is valid Usage Query only CALCulate 1 8 TRACe MARKer YDELta Is available with trace measurements It returns the power difference of the two curve markers if the value is valid The unit depends on the trace function Usage Q...

Page 240: ...ibration 1 4 ZERO FAST AUTO 238 CALibration ALL ZERO FAST AUTO 238 CALibration 1 4 DATA data Read and write binary calibration data sets for the selected sensor Parameters data block_data CALibration 1 4 ZERO AUTO auto CALibration ALL ZERO AUTO state Performs zeroing using the signal at the sensor input s The sensor s must be dis connected from all power sources Error messages 231 Data questionabl...

Page 241: ...the expected mea sured value is less than 10 dB above the lower measurement range limit Parameters state ON OFF ONCE LFR UFR RST OFF CALibration 1 4 ZERO FAST AUTO state CALibration ALL ZERO FAST AUTO state Perform fast zeroing However the commands cannot be called unless the sensor s is are in the Trace mode Since the commands are processed very quickly they are not overlapping The queries theref...

Page 242: ...DISPlay WINDow 1 4 METer UPPer POWer 244 DISPlay WINDow 1 4 ANALog UPPer POWer 244 DISPlay WINDow 1 4 METer UPPer RATio 245 DISPlay WINDow 1 4 ANALog UPPer RATio 245 DISPlay WINDow 1 4 NAME 245 DISPlay WINDow 1 4 RESolution 245 DISPlay WINDow SELect 246 DISPlay WINDow SIZE 246 DISPlay WINDow 1 4 STATe 247 DISPlay WINDow 1 4 TRACe LOWer 247 DISPlay WINDow 1 4 TRACe UPPer 247 DISPlay WINDow 1 4 TSLo...

Page 243: ... can contain ASCII characters from code 32 to code 126 The string n is interpreted as a line break Up to 4 lines DISP MESS TYPE MESS or up to 2 lines DISP MESS TYPE QUERy can be shown The length of a line depends on the characters used because a proportional font is used Lines that are too long are cut off which is indica ted by at the end of the line Usage Event DISPlay MESSage TYPE message_type ...

Page 244: ...of the display content Usage Query only DISPlay UPDate update_frequency Adjusts the update frequency of the measured values in the display In case of discon tinuities in the voltage progress at the analog outputs display updates may be suspen ded with DISP UPD FREeze The display won t consume CPU time in this state Parameters update_frequency NORMal SLOW FREeze RST NORMal DISPlay WINDow 1 4 AVALue...

Page 245: ...he right hand side below the frequency Primary channel not in the trace mode Only the frequency of the primary channel and if applicable the frequency of the secondary channel are displayed EXTReme Minimum maximum and peak to peak maximum to minimum of all measured values displayed since the last CALC EXTR RES PowerOn or AuxVal Reset are shown man ual operation With logarithmic units the peak to p...

Page 246: ...1 4 METer AUTO auto DISPlay WINDow 1 4 ANALog AUTO auto DISP AUTO ONCE automatically determines scaling for the analog display The upper and the lower limit value of the display is set as a function of the current measurement data Only the ONCE parameter is permissible a query always supplies the value OFF Parameters auto ONCE OFF RST OFF DISPlay WINDow 1 4 METer LOWer lower_limit DISPlay WINDow 1...

Page 247: ...urement result is a power ratio Value range See table 6 12 Value range Unit DB DPCT O Parameters lower_ratio float_value RST 120 DB Default unit DB DISPlay WINDow 1 4 METer UPPer upper_limit DISPlay WINDow 1 4 ANALog UPPer upper_limit Sets the upper limit value of the analog scale The value range depends on the current output unit of the measured value of the win dow Unit See table 6 10 Value rang...

Page 248: ... 4 Parameters string string RST Example DISP1 NAME Power In DISP2 NAME Power Out The measured values in the display are now visually assigned to the different test points in the test setup Input power in window 1 output power in window 2 DISPlay WINDow 1 4 RESolution resolution Specifies the number of significant places of the mantissa when the measurement result is displayed on a linear scale The...

Page 249: ...c data An invalid number was specified for the resolution Parameters resolution 1 0 1 0 01 0 001 lin Linear scale of measurement result log Logarithmic scale of measurement result 1 lin 1 significant place log No decimal place 0 1 lin 2 significant places log 1 decimal place 0 01 lin 3 significant places log 2 decimal places 0 001 lin 4 significant places log 3 decimal places RST 0 01 Example DISP...

Page 250: ...Likewise open windows become smaller when a new one is opened Parameters state ON OFF RST ON Window 1 OFF Window 2 3 4 DISPlay WINDow 1 4 TRACe LOWer lower_limit Sets the lower limit for the power axis in the Trace mode The value range depends on the unit Table 6 13 The value range depends on the unit Unit of measured value W DBM DBUV Value range 999 999E3 999 999E3 120 90 13 010 136 990 Unit DBM ...

Page 251: ...ORMat READings BORDer 248 FORMat READings DATA 248 FORMat SREGister 249 FORMat READings BORDer mode Influences the order of bytes in 64 bit binary data Parameters mode NORMal SWAPped NORMal The 1st byte is the MSB most significant byte the 8th byte the LSB least significant byte This fulfills the Big Endian convention Big Endian the big end comes first SWAPped The 1st byte is the LSB least signifi...

Page 252: ...ns and up to 80 entries lines can be created Thus not only the sensors but also the frequency response of various test assemblies can be compensated for during the measurement The tables are selected with SENSe 1 4 CORRection FDOTable SELect on page 268 and then activated and deactivated with SENSe 1 4 CORRection FDOTable STATe on page 268 Names can be assigned to the tables Some commands which do...

Page 253: ...tring for each stored state and then for each stored table this string again consists of two strings and a numeric value string type NR1 string gives the name of the stored data item type the type TABL or STAT and NR1 the length of the data item in bytes Example The response to query MEM CAT could be 956 99044 REFL STAT 408 NRPZ21 TABL 432 SPLITTER1 TABL 116 Usage Query only MEMory CATalog STATe O...

Page 254: ...le in memory for storing correction tables and device states as well as the memory already used Usage Query only MEMory FREE STATe Returns the number of bytes available in memory for storing device states as well as the memory already used for device states Usage Query only MEMory FREE TABLe Returns the number of bytes available in memory for storing device states as well as the memory already use...

Page 255: ...to 9 and _ The query of this command returns the number of the memory location with the name of string Parameters string 1 19 maps the string on the selected memory location of the device states MEMory STATe RESet The command resets the names of the stored device states to factory default Setup 1 etc Usage Query only MEMory TABLe DATA f_n o_n The command returns the content of the currently select...

Page 256: ...nd DB Parameters NRf NRf Enters frequencies in the first column of the table selected with MEM TABL SEL RST Tables are not changed in case of a RST Default unit HZ MEMory TABLe FREQuency POINts Returns the number of entries lines in the table selected with MEM TABL SEL name Usage Query only MEMory TABLe GAIN MAGNitude NRf NRf This command enters offset values in the second column of the table sele...

Page 257: ...of the memory locations By default the tables are assigned the names Table 1 to Table 10 The name can contain the characters A to Z a to z 0 to 9 and _ The query form of this command returns the number of the memory location with the name map Parameters string 1 9 maps the string on the selected memory locations for device states MEMory TABLe MOVE string string This command allows tables to be ren...

Page 258: ...der 1 2 LIMit LOWer 256 OUTPut RECorder 1 2 LIMit LOWer POWer 256 OUTPut RECorder 1 2 LIMit LOWer RATio 256 OUTPut RECorder 1 2 LIMit UPPer 257 OUTPut RECorder 1 2 LIMit UPPer POWer 257 OUTPut RECorder 1 2 LIMit UPPer RATio 257 OUTPut RECorder 1 2 STATe 258 OUTPut ROSCillator STATe 258 OUTPut TTL ACTive 258 OUTPut TTL FAIL 258 OUTPut TTL FEED 259 OUTPut TTL HVOLtage 259 OUTPut TTL LVOLtage 259 OUT...

Page 259: ...er_limit float_value RST 20 DBM or 0 DB OUTPut RECorder 1 2 LIMit LOWer POWer lower_limit Specifies the lower power limit of the characteristic for one of the two analog outputs if the associated calculate block returns a power unit DBM W or DBUV as measured value see figure 6 8 Characteristic of analog outputs Units DBM W DBUV Parameters lower_limit float_value Range 120 DBM to 90 DBM RST 20 DBM ...

Page 260: ...r POWer upper_limit Specifies the upper power limit of the characteristic for one of the two analog outputs if the associated calculate block returns a power unit DBM W or DBUV as the measured value see figure 6 8 Characteristic of analog outputs Unit DBM W DBUV Parameters upper_limit float_value Range 120 DBM to 90 DBM RST 20 DBM Default unit DBM OUTPut RECorder 1 2 LIMit UPPer RATio upper_limit ...

Page 261: ...igger In OUT1 x x x OUT2 TRIG x x Parameters state ON OFF RST output 1 ON output 2 OFF OUTPut ROSCillator STATe state The command switches the optional RF generator ON or OFF Parameters state ON OFF RST OFF OUTPut TTL ACTive string Specifies whether the value set via OUTP TTL LVOL LOW or via OUTP TTL HVOL HIGH should be applied if the measured value causes a limit violation at the TTL output Param...

Page 262: ...imit and limit monitoring is active the voltage specified in table 6 14 Voltage at TTL output first line is output Parameters calculate_block string Range CALC1 LIM CALC2 LIM CALC3 LIM CALC4 L IM RST CALC1 LIM OUTPut TTL HVOLtage high_voltage Sets the high voltage for the TTL output Parameters high_voltage float_value Range 0 V to 3 3 V RST 3 3 V Default unit V OUTPut TTL LVOLtage low_voltage Sets...

Page 263: ...M UPP OUTP TTL LVOLT DISP LIM LOW DISP LIM UPP OUTP TTL ACT HIGH OUTP TTL FAIL LOW OUTP TTL ACT LOW OUTP TTL FAIL HIGH Fig 6 9 Voltage at TTL output Parameters state ON OFF RST OFF OUTPut TRIGger STATe Switches the trigger output ON or OFF The source of signals on the trigger bus can either be the external trigger input or a sensor in trigger master mode The output needs to be switched to OFF befo...

Page 264: ...7 SENSe 1 4 CORRection OFFSet STATe 267 SENSe 1 4 CORRection DCYCle INPut MAGNitude 267 SENSe 1 4 CORRection DCYCle STATe 268 SENSe 1 4 CORRection FDOFfset INPut MAGNitude 268 SENSe 1 4 CORRection FDOTable SELect 268 SENSe 1 4 CORRection FDOTable STATe 268 SENSe 1 4 CORRection SPDevice SELect 269 SENSe 1 4 CORRection SPDevice STATe 269 SENSe 1 4 FREQuency CW 269 SENSe 1 4 FREQuency FIXed 269 SENSe...

Page 265: ...ion 285 SENSe 1 4 TRACe AVERage COUNt AUTO POINt 286 SENSe 1 4 TRACe AVERage COUNt AUTO NSRatio 286 SENSe 1 4 TRACe AVERage COUNt AUTO TYPE 286 SENSe 1 4 TRACe AVERage TCONtrol 287 SENSe 1 4 TRACe MEASurement ALGorithm 287 SENSe 1 4 TRACe MEASurement AUTO STATe 287 SENSe 1 4 TRACe MEASurement DEFine DURation REFerence 288 SENSe 1 4 TRACe MEASurement DEFine TRANsition HREFerence 288 SENSe 1 4 TRACe...

Page 266: ...extreme val ues are lost Using SENSe 1 4 AUXiliary MINMax a sensor can be assigned to transmit to the R S NRP2 the min ima and maxima that occurred in the Trace mode together with the measured value If CALCulate FEED POWer PEAK ON SWEep 1 4 is set peak instead of average values are used for calculating RNDMax In contrast to MINMax instead of the Min value the value of a randomly selected sample is...

Page 267: ...matically the filter length can become large and thus also the measurement time An upper time limit can be set via SENS 1 4 AVER COUN AUTO MTIME maxi mum time It should never be exceeded Undesired long measurement times can thus be prevented in the SENS AVER COUN AUTO TYPE NSR mode if the automatic filter length switchover is on Parameters mtime float_value measurement time Range depending on sens...

Page 268: ...termine the filter length Parameters slot int_value Range depending on sensor RST depending on sensor SENSe 1 4 AVERage COUNt AUTO NSRatio nsratio Indicates the maximum noise ratio in the measurement result Achieving the same result by filter length setting is attempted only if SENS 1 4 AVER COUN AUTO ON and SENS 1 4 AVER COUN AUTO TYPE NSR are set Unit DB PCT Parameters nsratio float_value Range ...

Page 269: ...e 1 4 AVERage TCONtrol mode As soon as a new single value is determined the filter window is advanced by one value so that the new value is taken into account by the filter and the oldest value is forgotten SENSe 1 4 AVERage TCONtrol terminal control then deter mines whether a new result is calculated immediately after a new measured value is available MOVing or only after an entire range of new v...

Page 270: ...the unit set by UNIT POW RAT will be used Unit DB PCT Parameters offset_value float_value Range depending on sensor RST depending on sensor Default unit DB SENSe 1 4 CORRection OFFSet STATe state Switches the offset correction on or off Parameters state ON OFF RST depending on sensor SENSe 1 4 CORRection DCYCle INPut MAGNitude magnitude Informs the R S NRP2 about the duty cycle of the power to be ...

Page 271: ... by the SENSe 1 4 CORRection FDOTable SELect command The R S NRP2 can manage up to ten tables MEMory commands The frequency dependent offset tables consist of two columns the first containing the frequencies the second the associated correction values When the R S NRP2 is informed about the signal frequency with command SENSe 1 4 FREQuency CW FIXed float_value an appropriate correction factor is d...

Page 272: ...ice Parameters state ON OFF RST depending on sensor SENSe 1 4 FREQuency CW frequency SENSe 1 4 FREQuency FIXed frequency Informs the R S NRP2 about the frequency of the power to be measured since this frequency is not automatically determined The frequency is used to determine a fre quency dependent correction factor for the measurement results Parameters frequency float_value Range depending on s...

Page 273: ...nal or external trig gering this is usually of no importance to the user If TRIG SOUR HOLD or BUS is used however then each measurement must be triggered twice with TRG or TRIG IMM Error messages 24 Sensor mode not supported A sensor does not support a measurement mode 28 Sensor not idle The sensor is not in the IDLE state 151 Invalid string data An invalid parameter was transmitted for string SEN...

Page 274: ...l this measurement mode is very similar to the ContAv mode The integration time is however not predefined but determined by the sensor with the aid of a burst detector The start of a burst is detected when the measurement signal rises above the set trigger level The end is set when the signal drops below the trigger threshold SENS POW BURS DTOL defines the time interval during which a signal drop ...

Page 275: ...edure in a window with a selectable number of values The filter window is config ured with the SENSe 1 4 AVERage commands Parameters integration_time float_value Range depending on sensor RST depending on sensor Default unit S SENSe 1 4 POWer AVG BUFFer SIZE number Sets the number of desired values for the buffered ContAv mode Parameters number int_value Range 1 400000 RST depending on sensor SENS...

Page 276: ...pecial signals i e signals with a high crest factor Unit DB PCT Parameters clevel float_value Range depending on sensor RST depending on sensor Default unit DB SENSe 1 4 POWer AVG SMOothing STATe state Activates deactivates digital lowpass filtering of the sampled video signal The problem of instable display values due to a modulation of a test signal described under SENS 1 4 SAMP can also be elim...

Page 277: ...remains below the trigger level is shorter than the drop out tolerance The burst end is thus recognized correctly Drop out time Trigger level Power Time BURSt DTOLerance Pulse interval BURSt DTOLerance Fig 6 10 Meaning of drop out TOLerance Parameters tolerance float_value Range depending on sensor RST depending on sensor Default unit S SENSe 1 4 POWer TGATe 1 4 EXCLude MID OFFSet TIME time interv...

Page 278: ...T2 TIME SENS TGAT2 MID TIME SENS TGAT2 MID OFFS TIME Fig 6 11 MID parameter in the Timegate mode Parameters time interval float_value Range depending on sensor RST depending on sensor Default unit S SENSe 1 4 POWer TGATe 1 4 OFFSet TIME time Is used for configuring the Timegate mode It specifies the start of one of the four gates sweeps relative to the delayed trigger point If this value is negati...

Page 279: ...te Selects one of the four gates in which the average power is measured if the Timegate mode is selected Parameters tgate 1 2 3 4 RST 1 SENSe 1 4 POWer TGATe 1 4 TIME time Is used for configuring the Timegate mode It specifies the duration of one of the four gates sweeps relative to the delayed trigger point In manual operation the start and duration of the gates can also be defined graphically if...

Page 280: ...ault unit S SENSe 1 4 POWer TSLot EXCLude MID STATe state Activates or deactivates the blanking out of time intervals in the timeslots There is no direct command equivalent in the command groups of the power sensors Instead the length of the interval is set to zero Parameters state ON OFF Range depending on sensor RST depending on sensor If the RST value of SENS TSL MID TIME is zero the RST value ...

Page 281: ...tion is necessary if the VSWR exceeds a value of 1 05 Otherwise data sheet specifications for absolute accuracy cannot be met reliably To compensate for reflection the magnitude of the reflection coefficient of the load with the SENSe RGAMma MAGNitude setting and the phase angle with the SENSe RGAMma PHASe setting must be transferred To deactivate reflection compen sation SENSe RGAMma MAGNitude 0 ...

Page 282: ...al sampling rate FREQ1 Parameters sampling_rate FREQ1 FREQ2 RST depending on sensor SENSe 1 4 SGAMma MAGNitude magnitude The R S NRP2 can perform a measured value correction taking the complex reflection coefficient source gamma of the signal source into account SENS 1 4 SGAM CORR STAT ON must be set The magnitude of the reflection coefficient is set with SENS 1 4 SGAM MAGN Parameters magnitude fl...

Page 283: ... data for the statistics is collected SENS STAT MID OFFS determines the distance from the start of the measurement to the start of the interval to be blanked out see also SENSe 1 4 POWer TGATe 1 4 EXCLude MID OFFSet TIME on page 274 Parameters time_interval float_value Range depending on sensor RST depending on sensor Default unit S SENSe 1 4 STATistics EXCLude MID TIME time_interval Together with...

Page 284: ...epending on sensor RST depending on sensor Default unit S SENSe 1 4 STATistics SAMPles MINimum minimum Determines the minimum number of samples to be included in the statistics For this purpose the filter length which can only be set in powers of 2 is set such that the fol lowing inequality applies dt mpw N N MinSamples fil In this inequality Nfil is the filter length SENS TRAC AVER COUN mpw the t...

Page 285: ...xis over which the statistics function CCDF PDF is calculated see fig ure 6 14 Setting the power axis for statistics measurements Parameters range float_value Range depending on sensor RST depending on sensor Default unit DB SENSe 1 4 STATistics SCALe X RLEVel rlevel Defines together with the SENS STAT SCAL X RANG command the range on the power axis over which the statistics function CCDF PDF is c...

Page 286: ... Range depending on sensor RST depending on sensor Default unit S SENSe 1 4 TIMing EXCLude STARt exclude_start Sets a time that is to be excluded at the beginning of the integration period Integration period EXCLude STARt EXCLude STOP Power Time Fig 6 15 Effect of commands SENS 1 4 TIM EXCL STAR and STOP Parameters exclude_start float_value Range depending on sensor RST depending on sensor Default...

Page 287: ...length Sets the length of the filter for the Trace mode The wider the filter the lower the noise and the longer it takes to obtain a measured value Note The SENS TRAC AVER COUN command switches the automatic filter length switch over off SENS TRAC AVER COUN AUTO OFF Parameters filter_length The filter length can only be 1 2 4 8 16 2n If the entered filter length is not a power of two the value is ...

Page 288: ... measurement times can thus be prevented in the SENS AVER COUN AUTO TYPE NSR mode if the automatic filter length switchover is on Parameters mtime float_value Range depending on sensor RST depending on sensor Default unit S SENSe 1 4 TRACe AVERage COUNt AUTO RESolution resolution Defines the number of significant places for the Trace mode for linear units and the number of decimal places for logar...

Page 289: ...ent result for the Trace mode The setting is taken into account only if SENS 1 4 TRAC AVER COUN AUTO ON and SENS 1 4 TRAC AVER COUN AUTO TYPE NSR are set Unit DB PCT Parameters maximum_noise float_value Range depending on sensor RST depending on sensor Default unit DB SENSe 1 4 TRACe AVERage COUNt AUTO TYPE trace_mode Selects the operating method for the automatic filter length in trace mode Param...

Page 290: ... the trace data The pulse top level is taken on the mean value of all points representing the pulse top Similarly the pulse base is determined from the points representing the pulse base Note This algorithm is recommended for analyzing most of the pulse signals INTegration Computes the pulse as a reference top power by fitting a rectan gle pulse of same energy into the pulse signal Note Use this a...

Page 291: ...lling edge of the pulse These values are needed for measurement of the rise fall time Unit PCT O Parameters ref_level float_value Range depending on the sensor RST depending on the sensor Default unit PCT SENSe 1 4 TRACe MEASurement DEFine TRANsition LREFerence lref_level Sets the low reference level in terms of percentage of the pulse power amplitude The Low Ref Power defines the start of the ris...

Page 292: ...ge Query only SENSe 1 4 TRACe MEASurement POWer PULSe TOP Returns the power of the first detected complete pulse of the current trace data includ ing rising and falling edges Unit WATT Usage Query only SENSe 1 4 TRACe MEASurement PULSe DCYCle Returns the duty cycle of the current trace data Unit PCT Usage Query only SENSe 1 4 TRACe MEASurement PULSe DURation Returns the pulse duration pulse width ...

Page 293: ...pulse The fall time is the time the signal requires to change from high to low level High and low levels can be adjusted using the commands SENS TRAC MEAS DEF TRAN HREF and SENS TRAC MEAS DEF TRAN LREF Unit S Usage Query only SENSe 1 4 TRACe MEASurement TRANSition NEGative OCCurrence Returns the stop point of the current pulse i e the time when the signal passes through the medial reference level ...

Page 294: ...AS DEF DUR REF Unit S Usage Query only SENSe 1 4 TRACe MEASurement TRANSition POSitive OVERshoot Returns the amount of relative undershooting of the signal at the beginning of a pulse Unit PCT Usage Query only SENSe 1 4 TRACe MEASurement TRANSition SPERiod Returns the resolution of time related pulse parameters in s The respective value depends on the pulse measurement configuration and the measur...

Page 295: ...junction with SENS TRAC MEAS OFFS TIME this command can be used to define a gate on a trace measurement in which the pulse analysis shall be performed If the gate spans the same time interval as the trace measurement the first detected pulse will be analyzed Using a gate it is possible to investigate successive pulses Parameters time float_value Range depending on the sensor RST depending on the s...

Page 296: ...e to be covered by the Trace sequence Parameters time float_value Range depending on sensor RST depending on sensor Default unit S 6 12 SERVice The commands of the SERVice system are used for maintenance or test purposes They were implemented primarily to support device development The numeric suffix refers to the sensors Before commands of the SERVice system can be sent to a sensor they must be e...

Page 297: ...to 255 Usage Query only SERVice 1 4 CALibration TEMP state Initiates a temperature measurement of the sensor in question The temperature can be queried with SERV CAL TEMP DATA Parameters state ONCE Usage Event SERVice 1 4 CALibration TEMP DATA Returns the temperature of the sensor in Kelvin if a temperature measurement was previously initiated by means of SERV CAL TEMP ONCE Usage Query only SERVic...

Page 298: ...et Example The command sequence SERV2 RCO 2 SERV2 RES 3 SERV2 RES 2 SERV2 RES 4 SERV2 RES 1 makes sensor 2 return the measured values 3 W 3 W 4 W 3 W 3 W 4W from now on SERVice 1 4 SERRors state The sensors signal an error to the R S NRP2 if samples are lost while a signal is sam pled sampling as may be the case with high sampling rates In such a case the measurement is less accurate Since this er...

Page 299: ...egister Operation Sense Status Register Operation Lower Limit Fail Status Register Operation Upper Limit Fail Status Register Except for the Standard Event Status Register each of these registers comprises five subregisters with which the function of the register can be configured These subregisters are called EVENt CONDition NTRansition PTRansition ENABle The registers are 16 bits wide but only t...

Page 300: ...tended by the character strings EVENt CONDition ENABle PTRansition or NTRansition without a question mark at the end the respective subregisters can be accessed The enable and transition registers can also be set with these commands The effect of the status reporting sys tem can thus be adapted to user requirements The parameters have the following meaning status_register_summary_command One of th...

Page 301: ...the Device Status Register The status reporting system also includes the IST flag Individual STatus and the Par allel Poll Enable Register PPE assigned to it The IST flag like the SRQ combines the complete device status in a single bit The PPE has the same function for the IST flag as the SRE has for the service request The output buffer output queue contains the messages the device returns to the...

Page 302: ...cimal value 0 1 4 16 8 256 12 4096 1 2 5 32 9 512 13 8192 2 4 6 64 10 1024 14 16384 3 8 7 128 11 2048 15 32768 Table 6 17 Standard SCPI status register CONDition register The CONDition register is directly written by the hardware or the summary bit of the next lower register Its content reflects the current device status This register can only be read it cannot be written to or cleared Reading the...

Page 303: ...ster is frequently referred to as the overall register ENABle register The ENABle register determines whether the associated EVENt bit influen ces the summary bit see below Each bit of the EVENt register is ANDed symbol with the associated ENABle bit The events of all logical opera tions of this register are ORed symbol and passed on to the summary bit ENABle bit 0 the associated EVENt bit does no...

Page 304: ...e Power Summary Warning Questionable Calibration Summary POST Failure 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 0 0 0 0 0 0 0 Questionable Window Summary 0 0 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sensor A connected Sensor A error Sensor A Front Rear Key pressed Sensor B connected Sensor C connected Sensor D connected Sensor B Front Rear Sensor C Front Rear Sensor D Front Rear Sensor B error Sensor...

Page 305: ...ensor A waiting for trigger 0 0 1 2 3 4 15 Sensor C initializing 0 0 Sensor D initializing Sensor B initializing Sensor A initializing 0 0 1 2 3 4 15 Window 3 Lower Limit Fail 0 0 Window 4 Lower Limit Fail Window 2 Lower Limit Fail Window 1 Lower Limit Fail 0 0 1 2 3 4 Operation Calibrating Status Register Operation Measuring Status Register Operation Trigger Status Register Operation Sense Status...

Page 306: ...ndow 7 Power Window 8 Power 0 0 STAT QUES POW STAT QUES WIND STAT QUES CAL Fig 6 19 Questionable Status Register 6 13 4 Description of Status Registers In the following sections the SCPI status registers shown in figure 6 17 figure 6 18 figure 6 19 are described in detail Status Byte STB Service Request Enable Register SRE Device Status Register Questionable Status Register Standard Event Status R...

Page 307: ... configuration of the device status register this bit is set when a sensor is connected or disconnected when an error has occurred in a sensor or when a key has been pressed 2 Error Queue not empty The bit is set if the error queue has an entry If this bit is enabled by the SRE each entry of the error queue will generate a service request An error can thus be recognized and speci fied in detail by...

Page 308: ...rallel Poll on page 316 or by the IST command The Parallel Poll Enable Register PPE determines which bits of the STB affect the IST flag The bits of the STB are ANDed with the corresponding bits of the PPE bit 6 is also used in contrast to the SRE The IST flag is obtained by ORing all results together The PPE can be set by the PRE command and read by the PRE query 6 13 7 Device Status Register Thi...

Page 309: ...t 15 Bit 15 will never be used 6 13 8 Questionable Status Register This register contains information on questionable device states Such states may occur when the device is not operated in compliance with its specifications The regis ter can be read by the queries STATus QUEStionable CONDition or STATus QUEStionable EVENt Table 6 20 Meaning of bits used in the Questionable Status Register Bit No M...

Page 310: ... has not sent a query or it sends new commands to the device before it retrieves existing requested data A frequent cause is a faulty query which cannot be executed 3 Device dependent Error This bit is set if a device dependent error occurs An error message with a number between 300 and 399 or a positive error number denoting the error in greater detail will be entered in the error queue 4 Executi...

Page 311: ...r is in the WAIT_FOR_TRG state i e waiting for a trigger event 6 Not used 7 to 9 Not used 10 Operation Sense Status Register summary bit This bit is set if a sensor is initialized 11 Operation Lower Limit Fail Status Register This bit is set if a displayed value has dropped below a lower limit value 12 Operation Upper Limit Fail Status Register This bit is set if a displayed value has exceeded an ...

Page 312: ...easuring Status Register can be read by the following commands STATus OPERation MEASuring SUMMary CONDition STATus OPERation MEASuring SUMMary EVENt Table 6 24 Meaning of bits used in the Operation Measuring Status Register Bit No Meaning 0 Not used 1 Sensor A measuring Sensor A is performing a measurement 2 Sensor B measuring Sensor B is performing a measurement 3 Sensor C measuring Sensor C is p...

Page 313: ...igger event that will change it to the MEASURING state 4 Sensor D waiting for trigger Sensor D is in the WAIT_FOR_TRG state and is waiting for a trigger event that will change it to the MEASURING state 5 to 14 Not used 15 Bit 15 will never be used 6 13 14 Operation Sense Status Register The CONDition register contains information as to whether a sensor is currently being initialized and depending ...

Page 314: ... by the transition register The limit value can be set with the command CALC LIM LOW DATA float_value Command CALC LIM LOW STAT ON configures the PTRansition and NTRansition registers so that the corresponding bit is set in the EVENt register when the displayed value drops below the limit The Operation Lower Limit Fail Status Register can be read by the following com mands STATus OPERation LLIMit ...

Page 315: ...ates whether a limit value was exceeded since the last readout of the Operation Upper Limit Fail Status Register Details of the behavior are defined by the transition register The limit value can be set with the command CALC LIM UPP DATA float_value Command CALC LIM UPP STAT ON configures the PTRansition and NTRansition registers so that the corresponding bit is set in the EVENt register when the ...

Page 316: ...register contains information as to whether the measured power values are questionable The Questionable Power Status Register can be read by the following commands STATus QUEStionable POWer SUMMary CONDition STATus QUEStionable POWer SUMMary EVENt Table 6 29 Meaning of bits used in the Questionable Power Status Register Bit No Meaning 0 Not used 1 Sensor A Power The measurement data of sensor A is...

Page 317: ...le WINDow SUMMary EVENt Table 6 30 Meaning of bits used in the Questionable Window Status Register Bit No Meaning 0 Not used 1 Window 1 Power The measured values returned by Calculate block 1 are corrupt 2 Window 2 Power The measured values returned by Calculate block 2 are corrupt 3 Window 3 Power The measured values returned by Calculate block 3 are corrupt 4 Window 4 Power The measured values r...

Page 318: ...t 15 will never be used 6 13 20 Use of Status Reporting System For an efficient use of the status reporting system the information it contains has to be transferred to the controller and further processed There are various methods which are described in the following 6 13 20 1 Service Request Use of the Hierarchical Structure Under certain conditions the device may send a service request SRQ to th...

Page 319: ...ond accordingly to the service request 6 13 20 2 Serial Poll Like the STB command the serial poll is used to query the status byte of a device Querying is implemented by interface messages however and is therefore much quicker The serial poll method has already been defined in the IEEE 488 1 standard and used to be the only standard method of querying the Status Byte Register This method also work...

Page 320: ...via Error List Usually the error queue is read with the SCPI query SYSTem ERRor Each SYSTem ERRor query is answered by an entry from the error queue If there are no more error messages in the error queue 0 No error is returned by the device The error queue should be queried in the controller program after each SRQ since the queue entries provide a more precise description of the error cause than t...

Page 321: ... QUEStionable registers yes yes Fill PTRansition register with 1 delete NTRansition register yes yes Clear error event queue yes yes yes Clear output queue yes yes yes 1 1 1 Stop command processing parser and clear input queue yes yes yes 1 Any command sent to a non empty output queue causes the error 410 Query interrupted 6 14 SYSTem With the aid of the SYSTem command system administrative device...

Page 322: ...et 325 SYSTem REBoot 325 SYSTem SENSor 1 4 INFO 326 SYSTem SENSor 1 4 REBoot 326 SYSTem SENSor 1 4 RESet 326 SYSTem SENSor 1 4 TEST 326 SYSTem SPEed 326 SYSTem STANdard CATalog 327 SYSTem STANdard PRESet 327 SYSTem STANdard PWSettings 327 SYSTem STANdard TRIGger SOURce 327 SYSTem TIME 327 SYSTem VERSion 328 SYSTem BEEPer IMMediate Generates an audible signal via the built in loudspeaker The durati...

Page 323: ...ST Default unit S SYSTem COMMunicate GPIB SELF ADDRess nr1 Sets the address with which the R S NRP2 can be addressed via the IEC IEEE bus The address is factory set to 20 and is not changed by a reset Parameters nr1 int_value Range 0 30 RST This setting is not changed by RST Usage Event SYSTem COMMunicate INET MODE mode Selects the mode for transmitting the special control sequences via ethernet a...

Page 324: ... is not changed by RST Usage Event SYSTem COMMunicate INET SELF GATEway ADDRess gwip1 gwip2 gwip3 gwip4 Sets the gateway address of your local subnet Note This command cannot be used while VXI11 or Ethernet is in use Note Choosing an invalid Gateway Address may disturb the traffic on your LAN If you are not sure how to configure these settings please ask your network administrator Parameters gwip1...

Page 325: ...alue for the IDN query The maximum string length is 128 characters SYSTem IDN AUTO state Activates deactivates return of the user defined string for the IDN query SYSTem INFO string Returns information about the system string_value is used to query a specific information item If called without parameters the command returns all available infor mation in the form of a list of strings separated by c...

Page 326: ...urs in the R S NRP2 The queue functions according to the FIFO principle The message entered first in the queue is also output first when a SYST ERR query is sent Querying clears the message Up to 30 errors can be stored in the error event queue If further errors occur the most recent error is overwritten by the message 350 Queue overflow If the error event queue is empty the message 0 No error is ...

Page 327: ...1 Softkey toggle 1 right SK1R 2 Softkey toggle 2 left SK2L 3 Softkey toggle 2 right SK2R 4 Softkey toggle 3 left SK3L 5 Softkey toggle 3 right SK3R 6 Softkey toggle 4 left SK4L 7 Softkey toggle 4 right SK4R 8 Softkey toggle 5 left SK5L 9 Softkey toggle 5 right SK5R 10 Softkey toggle 6 left SK6L 11 Softkey toggle 6 right SK6R 12 PRE SET PRESet 13 ZERO ZERO 14 FREQ FREQ 15 MODE Ⓘ Power POWer 17 DEL ...

Page 328: ... in separate application notes Parameters emulation character_data NRP NRP2 HP436A HP437B HP438A E4418B E4419B N1911A N1912A Usage Setting only SYSTem OPT string Determines the user defined return value for the OPT query The maximum string length is 128 characters SYSTem OPT AUTO state Activates deactivates return of the user defined string for the OPT query SYSTem PRESet Resets the R S NRP2 to de...

Page 329: ... the sensors are stand alone mea suring devices They communicate with the R S NRP2 via a command set complying with SCPI SYST SENS 1 48 RES prompts the base unit to send an RST to the sensor in question Measurements in progress are interrupted Usage Event SYSTem SENSor 1 4 TEST Performs a sensor test and returns a list of strings separated by commas The contents of this test protocol is sensor spe...

Page 330: ...ed strings can be quer ied with the SYSTem STANdard CATalog command RST empty_string SYSTem STANdard PWSettings state If SYST STAN PRES string is used SYST STAN PWS Preserve Window Set tings determines whether the window system is also configured with the calculate blocks OFF or whether exclusively sensor parameters are set ON Parameters state ON OFF RST OFF SYSTem STANdard TRIGger SOURce source I...

Page 331: ...his reason no fixed ranges are specified with these commands the ranges can be obtained from the respective sensor manual ABORt 1 4 329 ABORt ALL 329 INITiate 1 4 CONTinuous 329 INITiate ALL CONTinuous 329 INITiate 1 4 DISable 330 INITiate ALL DISable 330 INITiate 1 4 IMMediate 330 INITiate ALL IMMediate 330 TRIGger ALL SYNChronize STATe 330 TRIGger 1 4 ATRigger STATe 331 TRIGger ALL ATRigger STAT...

Page 332: ...e a sensor passes through the IDLE INITIATED WAIT_FOR_TRG and MEASURING states before it is again set to the IDLE INIT CONT OFF or the INITIATED INIT CONT ON state The settings are not changed when control is switched from manual to remote INIT CONT ON is set when remote control is switched back to manual control Parameters state ON OFF ON Continuous measurements are performed If a measurement is ...

Page 333: ...ERO AUTO INIT is the only remote control command that permits overlapping execution Other commands can be received and processed while the command is being executed Note INIT IMM invalidates all previous measuring results A FETCh command following INIT will thus always return a new measurement result Usage Event Error messages 28 Sensor not idle The sensor is not in the IDLE state TRIGger ALL SYNC...

Page 334: ...display update rate Parameters state ON OFF RST depending on sensor TRIGger 1 4 COUNt value TRIGger ALL COUNt value Sets the number of measurement cycles to be performed when the measurement is started with INIT Parameters value int_value Range depending on sensor RST depending on sensor Default unit 1 TRIGger 1 4 DELay delay TRIGger ALL DELay delay Defines the delay between the trigger event and ...

Page 335: ...mponents can thus be suppressed This setting parameter is used with pulsed GSM signals for example if only specific timeslots are to be measured The figure below shows the importance of the drop out time If the timeslots BF and DH are not to be measured the drop out time is set to a higher value than the period EB GD In this case the trigger events B and D are ignored Trigger level Power Time Drop...

Page 336: ...ending on sensor RST depending on sensor Default unit DB TRIGger 1 4 IMMediate TRIGger ALL IMMediate Performs triggering and makes sure that the sensor directly changes from the WAIT_FOR_TRG state to the MEASURING state irrespective of the selected trigger source TRIG SOUR A trigger delay set with TRIG DEL is ignored but not the auto matic delay determined when TRIG DEL AUTO ON is set When the tri...

Page 337: ... triggering TRIG SOUR EXT The trigger signal generated by the trigger master is routed via the connecting cable to the R S NRP2 and from there distributed to the other sensors and the trigger output Only one sensor can be trigger master at a time See also TRIG SYNC Parameters state ON OFF RST depending on sensor TRIGger 1 4 SLOPe state TRIGger ALL SLOPe state This command determines whether the ri...

Page 338: ...te INTernal The sensor determines the trigger time by means of the signal to be measured When this signal exceeds TRIG SLOP POS or fall short of TRIG SLOP NEG the power set by TRIG LEV the measurement is started after the time set by TRIG DEL Similar to TRIG SOUR EXT waiting for a trigger event can also be skip ped by TRIG IMM RST depending on sensor TRIGger 1 4 SYNChronize STATe state If set to O...

Page 339: ...M UNIT 1 8 POWer RATio output_unit Selects the output unit for the measured power ratio values This setting also determines the unit for the parameters of the following commands CALC REL CALC LIM UPP CALC LIM LOW DISP MET UPP DISP MET LOW OUTP REC LIM LOW OUTP REC LIM UPP Error messages If the compute function of the associated calculate block is SWR RLOSs or REFLection then the unit cannot be cha...

Page 340: ...h as solvents thinners acetone etc acids bases or other substances The outside of the instrument can be cleaned sufficiently using a soft lint free dust cloth 7 1 Sensor test The sensor selftest is described in chapter 4 7 6 1 Internal sensor selftest on page 162 7 2 Instrument selftest The R S NRP2 carries out a selftest during booting This selftest is described in chap ter 1 8 2 Startup on page ...

Page 341: ...or indicating error are The signal level is outside the set limit A trigger event is required but missing To adjust the trigger settings see chap ter 4 2 6 Trigger settings on page 85 Invalid settings for trace display are indicated by an error message in the info panel Example trace function Ratio is selected but only one channel is active A more detailed description of the error can be found in ...

Page 342: ...r queue is empty 8 2 2 Command Error Command errors causes bit 5 in the ESR to be set Error code Error text returned upon queue query Explanations 100 Command error Command faulty or invalid 101 Invalid character The command contains a character which is invalid for that type 102 Syntax error The command is invalid 103 Invalid separator Command contains an illegal character where a separator is ex...

Page 343: ...e SENSe commands 1 4 the CALCulate block with the high level measurement commands 1 4 and the window with the DISPlay commands 1 4 134 Suffix too long The suffix contains more than 12 characters 138 Suffix not allowed A suffix is not allowed for this command or at this position in the command 141 Invalid character data Either the character data element contains an invalid character or the particul...

Page 344: ...ored 213 Init ignored A request for a measurement initialization was ignored as another measurement was already in progress 214 Trigger deadlock A measurement could not be started or a result query could not be processed since the device would otherwise enter a deadlock state This occurs under the following conditions 1 TRIG SOUR BUS INIT FETCh A TRG or TRIG IMM would be required for trigger ing b...

Page 345: ...re 8 2 4 Device Specific Errors Device specific error causes bit 5 to be set in the ESR register Error code Error text returned upon queue query Explanations 300 Device specific error Generic device dependent error that cannot be defined more precisely 310 System error Indicates that some system error has occurred Please contact the R S service center 311 Memory error An error was detected in the ...

Page 346: ...rupted Example The query is followed by new data before the response was completely sent 420 Query UNTERMINATED An incomplete query was received 430 Query DEADLOCKED The query cannot be processed 440 Query UNTERMINATED after indefinite response A query is received in the same program message after a query requesting an indefinite response 8 2 6 Device Dependent Errors Device dependent error causes...

Page 347: ...sor removed while waiting for result A sensor was disconnected while the device was waiting for measurement results 42 Failed to initialize sensor A sensor could not be initialized 43 Error in receiving calibration data from sensor An error occurred in receiving calibration data from the sensor command CALibration 1 4 DATA 44 Error in sending calibration data to sensor An error occurred in sending...

Page 348: ...r Samples were lost while sampling the signal applied The measured value can thus be incor rect 55 Sensor hardware error A sensor signalled an error in the sensor hardware If the problem persists please contact the R S servicing center 56 Filter truncated With the automatic filter function activated a sensor tries to set the filter length such that the required accuracy is obtained If the measurem...

Page 349: ...otmenu 1 To open the Bootmenu press the softkey to the right Fig 8 2 Bootmenu button The login window opens Fig 8 3 Login 2 Enter the password The password is 7396 and cannot be changed After entering the last digit the R S NRP2 automatically opens the boot menu Bootmenu 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq com ...

Page 350: ...irmware version or ethernet address Fig 8 5 Boot menu System Info Service Opens the R S NRP2 service menu see chapter 8 3 2 Service Menu on page 349 Erase Nonvol Data Deletes the non volatile memory containing instrument settings This measure is recommended after the error message Sensor communication error appears The device displays a warning message prior to deletion and requires confirmation o...

Page 351: ...age Activates that an error message is displayed if a sample error occurs 8 3 2 Service Menu The R S NRP2 offer various service functions to perform system tests that are not part of the selftest to install deinstall options or to configure the reference signal Fig 8 7 Service menu Options Displays all options the instrument is equipped with Bootmenu 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 w...

Page 352: ...ork connection can be established Display Test Checks whether inputs via the softkeys are correctly indicated Fig 8 9 Service menu Display test Press some of the numbers shown on the right to check the correct display To exit press the Exit softkey or the ESC key Key Test Tests all hardkeys of the R S NRP2 located at its front panel Bootmenu 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq...

Page 353: ...y and marks the iden tified key If you press a key more than once the instrument displays a warning mes sage This dialog box closes if you either have pressed all keys or if you have not pressed any key within 15 seconds Buzzer Test Tests the beeper acoustic alarm Power Ref Calibration Protected service function see service manual Bootmenu 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq c...

Page 354: ...y or by remote control The nonvolatile memory is not erased by default when Volatile Mode is activated The current device configuration is maintained Thus you can use this mode to configure the R S NRP2 for a measurement setup that is always restored at boot time In addition the R S NRP2 can be reset to the factory default by erasing the nonvola tile memory A 1 1 Activating Volatile Mode Voltaile ...

Page 355: ...s This section covers hardware related topics on the remote control interfaces like pin assignment of the GPIB bus interface For information on how to set up a remote control connection via the different interfa ces see chapter 5 2 Connecting a Controller to the Base Unit on page 170 For information on how to configure the interfaces see chapter 4 7 1 Configuring the remote control interfaces on p...

Page 356: ...ND 6 logic GND GND 10 GND 8 DIO5 DIO6 DIO8 GND 11 GND 9 GND 7 24 13 14 15 16 17 18 19 20 21 22 23 1 12 11 10 9 8 7 6 5 4 3 2 Fig 1 1 Pin assignment of GPIB bus interface A 2 1 3 Bus lines Data bus with 8 lines DIO1 to DIO8 The transmission is bit parallel and byte serial in the ASCII ISO code DIO1 is the least significant bit DIO8 the most significant bit Control bus with five lines IFC Interface ...

Page 357: ...d with different inter face functions The interface function for the R S NRP2 are listed in the following table Table 1 1 GPIB bus interface functions Control character Interface function SH1 Source handshake AH1 Acceptor handshake L3 Listener function Listen Only mode unaddressed for MSA and TPAS recognizes END and EOS LE3 Extended Listener function Listen Only mode unaddressed for MSA and TPAS r...

Page 358: ...e Clear Resets the interfaces to their initial condition LLO Local Lockout Manual switchover to LOCAL is disabled Local LockOut deactivates the front panel keypad with the exception of the power key In the LLO state it is possible to return to the LOCAL mode only by remote control GTL command or switching the R S NRP2 off and on again SPE Serial Poll Enable Ready for serial poll SPD Serial Poll Di...

Page 359: ... RPC Transport TCP Network IP Data Link Ethernet 802 3 Physical 10 100BASE T Fig 1 3 The VXI11 protocol stack in the OSI reference model A VXI11 remote control connection consists of three channels core abort and inter rupt which can be used to set up as many links as desired The concept of links makes it possible to connect a network instrument client in a controller with several log ical devices...

Page 360: ... by all links Commands trans mitted via this channel do not contain a link ID The setup is handled by the network instrument client which first requests the connections from the network instrument server s portmapper service at port 111 The portmapper subsequently activates the channel in the R S NRP2 and tells the client at which ports channel services can be addressed For this reason it is impor...

Page 361: ...r core Initiates a device clear DCL in network instrument device In the R S NRP2 DCL and abort cause the same actions Since device_abort unlike device_clear runs via the abort channel it is not serialized together with other commands but directly accesses the device and is therefore preferable device_remote core Puts the network instrument device in the remote mode device_local core Puts the netwo...

Page 362: ... GTL emulates the IEC IEEE bus command GoTo Local All control characters defined in the IEC IEEE 1174 draft are listed in table 1 6 This chapter describes how the control sequences can be used for remote control via RS 232 C or Ethernet The IEC IEEE 1174 draft provides three different operating modes for transmitting the special control sequences These modes can be set via remote control using the...

Page 363: ...gh special control characters The state change from remote local is achieved by clearing down the connec tion peer sockets and through special control characters Simultaneous operation of the measuring instrument via local in the remote state can be achieved by using newly defined control characters GTM GoTo Mixed The IEC IEEE 1174 2 mode The IEC IEEE 1174 2 mode differs from the 1174 1 mode depen...

Page 364: ...imultaneously via the front panel and via RS 232 C and Ethernet The IEC IEEE 1174 draft does not provide this simul taneous operation because the remote control state is automatically assumed when data is received GTR go to remote This control character changes the remote local state to remote The GTR com mand allows a change to the remote state even before data is received The com bination of the...

Page 365: ...nd link 2 via which communications take place The R S NRP2 accepts the role of the server and the remote control program is the client Link 1 is used to transmit the SCPI commands and the response data Link 2 is reserved for service request messages SRQ and for an abort of the remote control function being currently performed Since the two links share the same IP address and port number the sequen...

Page 366: ...ommon command idn Close Link2 Close Link1 INCLUDE FILES include stdio h include winsock2 h LOCAL DEFINES define IP_ADDR 192 168 1 2 IP address of NRP2 define PORT_NO 3000 Port number of NRP2 define MAX_RECV 200 Max response len MAIN FUNCTION int main int argc char argv int nRet WSADATA wsaData SOCKET soLink1 SOCKET soLink2 SOCKADDR_IN saDevice char ResponseMessage MAX_RECV WORD wVersionRequired MA...

Page 367: ...s_addr inet_addr IP_ADDR saDevice sin_port htons u_short PORT_NO saDevice sin_family AF_INET Connecting Link 1 nRet connect soLink1 LPSOCKADDR saDevice sizeof SOCKADDR if nRet printf Connecting of Link 1 failed n return 1 Connecting Link 2 nRet connect soLink2 LPSOCKADDR saDevice sizeof SOCKADDR if nRet printf Connecting of Link 2 failed n closesocket soLink1 return 1 send SRE nRet send soLink1 sr...

Page 368: ...nd IDN failed n return 1 else printf Send IDN was successfully n Receive idn Response nRet recv soLink1 ResponseMessage MAX_RECV 0 if nRet 0 closesocket soLink2 closesocket soLink1 printf Receive IDN response message failed n else Show Answer ResponseMessage nRet 0 printf Response from NRP2 s ResponseMessage Disconnecting closesocket soLink2 closesocket soLink1 Remote control interfaces 北京海洋兴业科技股份...

Page 369: ...C device has the following format USB Vendor ID Product ID serial number INSTR Vendor ID Product ID Serial number 0x0aad 0x001b The serial number is a string that can be taken from the System Sys tem Info menu for example In addition the VISA resource identifier appears on the R S NRP2 display if the USB remote interface is selected A 3 Standard Configurations The following tables list the setting...

Page 370: ...EXCL STAR 20 µs Exclude Time End SENS TIM EXCL STOP 30 µs Number Of Timeslots SENS TSL COUN 8 Timeslot Width SENS TSL WIDT 577 µs Timeslot Fence SENS TSL MID OFF Timegate Offset SENS TGAT OFFS TIME 1 20 µs 2 2 328 ms Timegate Length SENS TGAT TIME 1 527 µs 2 527 µs Timegate Fence SENS TGAT MID OFF Trace Offset Time SENS TRAC OFFS TIME 50 µs Trace Capture Time SENS TRAC TIME 5 ms Trace Number Of Po...

Page 371: ...RST DTOL 3 ms Exclude Time Start SENS TIM EXCL STAR 130 µs Exclude Time End SENS TIM EXCL STOP 140 µs Number Of Timeslots SENS TSL COUN 6 Timeslot Width SENS TSL WIDT 6 667 ms Timeslot Fence SENS TSL MID OFF Timegate Offset SENS TGAT OFFS TIME 1 130 µs 2 20 130 ms Timegate Length SENS TGAT TIME 1 6 390 ms 2 6 390 ms Timegate Fence SENS TGAT MID OFF Trace Offset Time SENS TRAC OFFS TIME 500 µs Trac...

Page 372: ...Time SENS APER 40 ms Duty Cycle SENS DCYC 16 25 Duty Cycle Correction SENS DCYC STAT ON Smoothing SENS SMO OFF Dropout Tolerance SENS BURST DTOL 3 ms Exclude Time Start SENS TIM EXCL STAR 125 µs Exclude Time End SENS TIM EXCL STOP 135 µs Number Of Timeslots SENS TSL COUN 6 Timeslot Width SENS TSL WIDT 6 667 ms Timeslot Fence SENS TSL MID OFF Timegate Offset SENS TGAT OFFS TIME 1 125 µs 2 20 125 ms...

Page 373: ...SENS SMO OFF Dropout Tolerance SENS BURST DTOL 416 7 µs Exclude Time Start SENS TIM EXCL STAR 15 µs Exclude Time End SENS TIM EXCL STOP 25 µs Number Of Timeslots SENS TSL COUN 24 Timeslot Width SENS TSL WIDT 416 667 µs Timeslot Fence SENS TSL MID OFF Timegate Offset SENS TGAT OFFS TIME 1 15 µs 2 5 015 ms Timegate Length SENS TGAT TIME 1 348 055 ms 2 348 000 ms Timegate Fence SENS TGAT MID OFF Trac...

Page 374: ...e TRIG SOUR EXT Table 1 15 WCDMA 3GPP TDD DL Sensor parameter Remote control command in short form Value Sensor Mode SENS FUNC POW XTIM Aperture Time SENS APER 10 ms Duty Cycle SENS DCYC 6 667 Duty Cycle Correction SENS DCYC STAT ON Smoothing SENS SMO OFF Dropout Tolerance SENS BURST DTOL 666 667 µs Exclude Time Start SENS TIM EXCL STAR 25 µs Exclude Time End SENS TIM EXCL STOP 40 µs Number Of Tim...

Page 375: ...rt form Value Sensor Mode SENS FUNC POW XTIM Aperture Time SENS APER 10 ms Duty Cycle SENS DCYC 6 420 Duty Cycle Correction SENS DCYC STAT ON Smoothing SENS SMO OFF Dropout Tolerance SENS BURST DTOL 666 667 µs Exclude Time Start SENS TIM EXCL STAR 15 µs Exclude Time End SENS TIM EXCL STOP 40 µs Number Of Timeslots SENS TSL COUN 15 Timeslot Width SENS TSL WIDT 666 667 µs Timeslot Fence SENS TSL MID...

Page 376: ...me SENS APER 5 ms Duty Cycle SENS DCYC 13 250 Duty Cycle Correction SENS DCYC STAT ON Smoothing SENS SMO OFF Timegate Offset SENS TGAT OFFS TIME 1 20 µs 2 710 µs 3 835 µs 4 5 970 ms Timegate Length SENS TGAT TIME 1 620 µs 2 30 µs 3 85 µs 4 620 µs Timegate Fence SENS TGAT MID OFF Trace Offset Time SENS TRAC OFFS TIME 200 µs Trace Capture Time SENS TRAC TIME 10 250 ms Trace Number Of Points SENS TRA...

Page 377: ...t SENS TIM EXCL STAR 10 µs Exclude Time End SENS TIM EXCL STOP 15 µs Timegate Offset SENS TGAT OFFS TIME 1 10 µs 2 660 µs Timegate Length SENS TGAT TIME 1 341 µs 2 341 µs Timegate Fence SENS TGAT MID OFF Trace Offset Time SENS TRAC OFFS TIME 30 µs Trace Capture Time SENS TRAC TIME 1 280 ms Trace Number Of Points SENS TRAC POIN 261 Trace Realtime SENS TRAC REAL OFF Trigger Delay TRIG DEL 0 s Trigge...

Page 378: ...F Trace Offset Time SENS TRAC OFFS TIME 30 µs Trace Capture Time SENS TRAC TIME 2 530 ms Trace Number Of Points SENS TRAC POIN 261 Trace Realtime SENS TRAC REAL OFF Trigger Delay TRIG DEL 0 s Trigger Level TRIG LEV 30 dBm Trigger Source TRIG SOUR INT Trigger Slope TRIG SLOP POS Trigger Holdoff TRIG HOLD 4 980 ms Trigger Dropout Time TRIG DTIM 0 s Trigger Hysteresis TRIG HYST 3 dB Table 1 20 Blueto...

Page 379: ...RAC POIN 261 Trace Realtime SENS TRAC REAL OFF Trigger Delay TRIG DEL 0 s Trigger Level TRIG LEV 30 dBm Trigger Source TRIG SOUR INT Trigger Slope TRIG SLOP POS Trigger Holdoff TRIG HOLD 7 480 ms Trigger Dropout Time TRIG DTIM 0 s Trigger Hysteresis TRIG HYST 3 dB Table 1 21 CDMA2000 Sensor parameter Remote control command in short form Value Sensor Mode SENS FUNC POW AVG Aperture Time SENS APER 8...

Page 380: ...aning is easier to understand The R S NRP2 makes no distinction between upper case and lower case letters they are only used to distinguish between the short and long form A 4 1 1 The simplest measurement The simplest way to obtain a measured value is to use the high level measurement command MEAS which configures sensor 1 in the ContAv mode starts a measurement and always out puts a result that i...

Page 381: ...surement command MEAS REL and all other MEAS REL commands will divide the absolute measured value by the stored reference value CALC REL POW float_value is used to define such a reference value CALC REL POW 0 DBM MEAS REL All measured values are then divided by 0 dBm 1 mW prior to being transferred to the user The following section describes an extension of the MEAS command in which the result no ...

Page 382: ...easurement result is the ratio of the results from sensors 1 and 4 Example MEAS SWR DEF 2 1 2 It is assumed that sensor 1 delivers the forward power of a wave and sensor 2 the reflected power of a wave The measurement result represents the SWR of the two power values 1 2 1 1 2 1 P Note that the unit is automatically set to percent refer to chapter A 4 1 5 Selecting the output unit for measured val...

Page 383: ...le MEAS BURSt 5 us 10 us 0 us DEF 3 2 Sensor 2 measures in the BurstAv mode Triggering in response to a rising edge is internal At the beginning of the power pulse 10 µs are ignored to avoid overshoots in the signal which could distort the measurement result If the power falls below the trig ger level but does not exceed 5 µs dropout time the measurement will not be stop ped The measurement result...

Page 384: ...1 and 3 A 4 1 5 Selecting the output unit for measured values So far no information has been given on the unit of the measured values It is possible to modify the output unit of the measured values A distinction is made as to whether the result represents a power or a power ratio Relative measurements always deliver power ratios This also applies to the RATio SWR RLOS and REFL functions The units ...

Page 385: ...to measurements performed with MEAS since the time for configuring the measurement is only used once After CONF settings can be adapted to user s requirements by means of low level commands see below If a list of parameters is indicated for the READ command it must correspond to the list for the preceding CONF command After a measurement has been completed i e the data from the sensors is availabl...

Page 386: ... sent to the R S NRP2 since the query has to be answered first If a command is sent to the R S NRP2 the SCPI error 410 Query interrupted is output However FETCh should wait only if a measurement result is expected since com mand processing is blocked if a command is not answered If FETCh is executed although no measured values are expected the SCPI error 214 Trigger deadlock is output This may occ...

Page 387: ...ONT ON or all cycles defined via TRIG COUNT have not yet been processed or the R S NRP2 returns to the IDLE state The state is only entered internally and is not noticed by the user WAIT_FOR_TRG The R S NRP2 waits for a trigger event The source for this event is set via TRIG SOUR When the event defined in this way occurs the enters the MEASURING state MEASURING As long as the R S NRP2 measures dat...

Page 388: ...unit defined by UNIT CALC 1 8 MATH EXPR SENSn SENSn SENSm SENSn SENSm REFL SWR RLOS CALC 1 8 REL UNIT 1 8 POW UNIT 1 8 RAT Data output output queue in REMOTE mode or display in LOCAL mode Measured values raw data CALCulate UNIT SENSe SENS 1 4 Fig 1 6 Processing of measured values in the R S NRP2 The high level commands and the SENSe block allow indices to be specified These indices refer to the co...

Page 389: ...m and UNIT RATio dB A 4 4 1 The simplest measurement The fastest way to obtain a result is to use the following sequence of commands RST INIT FETCh Normally RST will set the ContAv mode The concept of smart sensor technology provides that each sensor determines the reset values of the assigned SENSe and TRIGger block Thus another mode than ContAv may come after RST with future sensors Information ...

Page 390: ...e to be started with TRG or GET This procedure is provided by standard IEEE 488 2 which stipulates that TRG or GET can also be used to perform complete measurements This includes the generation of an answer the measurement result In the R S NRP2 TRG does not have this meaning TRG only executes a trigger event and thus only causes the status transitions from WAIT_FOR_TRG to MEASURING TRG delivers n...

Page 391: ...rement has been completed This makes sense especially with internal triggering BurstAv mode Ignored trigger event Power Time TRIG HOLDoff TRIG DELay Trigger event Measurement Trigger level Fig 1 7 Meaning of settings for TRIG HOLD and TRIG DEL Exclude and Fence Mid In the measurement modes Burst Timeslot and Timegate it is also possible to exclude time domains from the integration of the measured ...

Page 392: ...o be excluded from the measurement Solution A 50 µs Fence is defined The sample values in this interval are not included in the measurement RST SENS FUNC POW TGAT AVG SENS TGAT SEL 2 select second gate SENS TGAT2 OFFS 2 328 MS GSM measurement in the fifth GSM slot SENS TGAT2 TIME 527 US length of a GSM burst SENS TGAT2 MID ON activate Fence SENS TGAT2 MID OFFS 2 528 MS exclude interval starts 200 ...

Page 393: ... is used to define a time span during which the power to be measured in the BurstAv mode must remain below the trigger level so that the end of the burst can be detected TRIG HYST is used to specify a value in dB by which the signal must fall below the trigger level so that the end of a burst can be detected A 4 4 3 Configuration of sensor settings The sensor settings are controlled by the SENSe c...

Page 394: ... pulse end can be set with commands SENS BURS DTOL and TRIG HYST RST SENS FUNC POW BURS AVG SENS BURS DTOL 100 MS TRIG HYST 3 DB INIT FETCh Trace mode SENS FUNC XTIM POW This mode is used to determine a large number of measured values in succession The number of required measured values is set with SENS SWE POI and the total mea surement time with SENS SWE TIM Note that each measurement must be tr...

Page 395: ...S AVER COUN 4 permanently sets filter length to 4 INIT FETCh Automatic filter setting SENS AVER COUN AUTO TYPE NSR RES is used to select whether the noise com ponent should remain below a specific threshold NSR or the measurement result should be stable up to a specific accuracy RES To avoid long measurement times SENS AVER COUNT AUTO MTIM can be used to specify a maximum measurement time The maxi...

Page 396: ... result can be corrected globally and depending on the frequency and it is possible to consider the duty cycle of a signal and the influence of the complex reflection coefficient Γ of the power source Global offset correction All measured values are multiplied by a correction factor logarithmically added RST SENS CORR OFFS STAT ON global offset correction ON SENS CORR OFFS 20 DB corrects result by...

Page 397: ...n coefficient of the source SENS SGAM MAGN 0 01 magnitude of the reflection coefficient SENS SGAM PHAS 179 phase angle of the reflection coefficient INIT FETCh A 4 4 4 Configuration of CALCulate blocks The function of the CALCulate blocks has already been explained Its most important task is the calculation and provision of measurement results Calculation function and relative measurement The calc...

Page 398: ... Either the power or the density distribution value can be specified A 4 5 1 Measurement of a density distribution curve The sensor measures the power in a time interval that is determined by theSENS STAT OFFS and SENS STAT TIME commands Triggering functions in a perfectly normal way as with other measurements In principle the number of power samples considered could be set by means of filtering T...

Page 399: ... the CCDF of a GSM signal at 15 dBm is to be calculated Subsequently the power value at which the CCDF is still 50 is of interest RST TRIG SOUR INT trigger to a signal edge TRIG SLOP POS trigger to rising signal edge SENS FUNC XPOW CCDF set CCDF statistics function SENS STAT OFFS 0 measurement starts at trigger time SENS STAT TIME 4 615 MS measurement duration 4 615 ms SENS STAT SCAL X POIN 1024 n...

Page 400: ... tran neg occ read start time of falling edge sens trac meas tran neg over read overshooting of falling edge sens trac meas tran pos dur read length of rising edge sens trac meas tran pos occ read start time of rising edge sens trac meas tran pos over read overshooting of rising edge sens trac meas power min read minimum power in trace sens trac meas power max read maximum power in trace sens trac...

Page 401: ...be reduced by making the following setting SYST SPEed FAST deactivates screen content The following settings also affect the measurement speed to a greater or lesser extent Which of these settings are possible however depends on what is to be measured For example if measurement accuracy is important filtering may also have to be acti vated which can reduce the measurement speed The length of the i...

Page 402: ...the last setting made with CONFigure as specified by the SCPI standard CALCulate GAIN SENS CORR OFFS STAT CALCulate PHOLd Is implemented in the R S NRP2 and has the same effect as CALC EXTR RES CALibration ECONtrol RCALibration RFACtor Is not implemented in the R S NRP2 DISPlay ENABle Is implemented in theR S NRP2 and has the same effect as DISPlay ILLUmination DISPlay SCREen FORMat NUMeric 1 2 Is...

Page 403: ...nit may be specified Unit 1 is valid SENSe 1 2 CORRection GAIN3 Has the same effect as SENSe 1 2 CORRection DCYCle With GAIN3 no unit may be specified Unit 1 is valid SENSe 1 2 CORRection GAIN4 Has the same effect as SENSe 1 2 CORRection FDOFfset INPut MAGNitude SENSe SWEep OFFSet TIME Is implemented in the R S NRP2 and has the same effect as SENSe TGATe OFFSet TIME SENSe SWEep TIME Is implemented...

Page 404: ... and DBUV UNIT POWer RATio The R S NRP2 recognizes the units DB DPCT and O AC Agilent recognizes the keyword AC of some high level commands and SENSe commands CONFigure READ MEASure FETCh SCALar POWer AC RELative DIFFerence DIFFerence RELative RATio RATio RELative SENSe POWer AC RANGe AUTO The R S NRP2 also recognizes these commands but AVG should be used instead of AC since R S NRP Zxx Power Sens...

Page 405: ... 1 4 CORRection OFFSet 267 SENSe 1 4 CORRection OFFSet STATe 267 SENSe 1 4 CORRection SPDevice SELect 269 SENSe 1 4 CORRection SPDevice STATe 269 SENSe 1 4 FREQuency CW 269 SENSe 1 4 FREQuency FIXed 269 SENSe 1 4 FUNCtion ON 269 SENSe 1 4 RGAMma PHASe 279 SENSe 1 4 RGAMma MAGNitude 278 SENSe 1 4 SAMPling 279 SENSe 1 4 SGAMma CORRection STATe 280 SENSe 1 4 SGAMma PHASe 279 SENSe 1 4 SGAMma MAGNitud...

Page 406: ...RACe MEASurement TRANSition ESAMpling AUTO STATe 290 SENSe 1 4 TRACe MEASurement TRANSition NEGative DURation 290 SENSe 1 4 TRACe MEASurement TRANSition NEGative OCCurrence 290 SENSe 1 4 TRACe MEASurement TRANSition NEGative OVERshoot 290 SENSe 1 4 TRACe MEASurement TRANSition POSitive DURation 291 SENSe 1 4 TRACe MEASurement TRANSition POSitive OCCurrence 291 SENSe 1 4 TRACe MEASurement TRANSitio...

Page 407: ...ics MARKer VERTical POSition Y 235 CALCulate 1 4 STATistics POWer AVG DATA 236 CALCulate 1 8 COUNt DATA 225 CALCulate 1 8 DATA 225 CALCulate 1 8 EXTRemes RESet 226 CALCulate 1 8 FEED 1 2 226 CALCulate 1 8 LIMit BEEP 227 CALCulate 1 8 LIMit CLEar AUTO 227 CALCulate 1 8 LIMit CLEar IMMediate 227 CALCulate 1 8 LIMit FAIL 228 CALCulate 1 8 LIMit FCOunt 228 CALCulate 1 8 LIMit LOWer STATe 229 CALCulate...

Page 408: ...y POWer AVG REFLection 218 CONFigure 1 8 ARRay POWer AVG RELative 218 CONFigure 1 8 ARRay POWer AVG RLOSs 218 CONFigure 1 8 ARRay POWer AVG SUM 218 CONFigure 1 8 ARRay POWer AVG SUM RELative 218 CONFigure 1 8 ARRay POWer AVG SWR 218 CONFigure 1 8 STATistics CCDF 219 CONFigure 1 8 STATistics PDF 219 CONFigure 1 8 XTIMe POWer 218 CONFigure 1 8 XTIMe POWer RATio 218 CONFigure 1 8 SCALar POWer BURSt 2...

Page 409: ...y ILLumination 239 DISPlay MESSage TEXT CLEar 240 DISPlay MESSage TEXT DATA 240 DISPlay MESSage TYPE 240 DISPlay MESSage STATe 240 DISPlay PIXMap 241 DISPlay UPDate 241 DISPlay WINDow SELect 246 DISPlay WINDow SIZE 246 DISPlay WINDow 1 4 ANALog AUTO 243 DISPlay WINDow 1 4 ANALog LOWer 243 DISPlay WINDow 1 4 ANALog LOWer POWer 244 DISPlay WINDow 1 4 ANALog LOWer RATio 244 DISPlay WINDow 1 4 ANALog ...

Page 410: ...ar POWer BURSt RLOSs 220 FETCh 1 8 SCALar POWer BURSt SUM 220 FETCh 1 8 SCALar POWer BURSt SUM RELative 220 FETCh 1 8 SCALar POWer BURSt SWR 220 FETCh 1 8 SCALar POWer TSLot 219 FETCh 1 8 SCALar POWer TSLot DIFFerence 219 FETCh 1 8 SCALar POWer TSLot DIFFerence RELative 219 FETCh 1 8 SCALar POWer TSLot RATio 219 FETCh 1 8 SCALar POWer TSLot RATio RELative 219 FETCh 1 8 SCALar POWer TSLot REFLectio...

Page 411: ...IFFerence RELative 223 MEASurement 1 8 SCALar POWer BURSt RATio 223 MEASurement 1 8 SCALar POWer BURSt RATio RELative 223 MEASurement 1 8 SCALar POWer BURSt REFLection 223 MEASurement 1 8 SCALar POWer BURSt RELative 223 MEASurement 1 8 SCALar POWer BURSt RLOSs 223 MEASurement 1 8 SCALar POWer BURSt SUM 223 MEASurement 1 8 SCALar POWer BURSt SUM RELative 223 MEASurement 1 8 SCALar POWer BURSt SWR 2...

Page 412: ...53 MEMory TABLe FREQuency POINts 253 MEMory TABLe GAIN POINts 254 MEMory TABLe GAIN MAGNitude 253 MEMory TABLe MAP 254 MEMory TABLe MOVE 254 MEMory TABLe RESet 254 MEMory TABLe SELect 254 OUTPut RECorder 1 2 FEED 255 OUTPut RECorder 1 2 LIMit LOWer 256 OUTPut RECorder 1 2 LIMit LOWer POWer 256 OUTPut RECorder 1 2 LIMit LOWer RATio 256 OUTPut RECorder 1 2 LIMit UPPer 257 OUTPut RECorder 1 2 LIMit U...

Page 413: ...OWer TSLot 221 READ 1 8 SCALar POWer TSLot DIFFerence 221 READ 1 8 SCALar POWer TSLot DIFFerence RELative 221 READ 1 8 SCALar POWer TSLot RATio 221 READ 1 8 SCALar POWer TSLot RATio RELative 221 READ 1 8 SCALar POWer TSLot REFLection 221 READ 1 8 SCALar POWer TSLot RELative 221 READ 1 8 SCALar POWer TSLot RLOSs 221 READ 1 8 SCALar POWer TSLot SUM 221 READ 1 8 SCALar POWer TSLot SUM RELative 221 RE...

Page 414: ...ge 325 SYSTem OPT 325 SYSTem OPT AUTO 325 SYSTem PRESet 325 SYSTem REBoot 325 SYSTem SENSor 1 4 INFO 326 SYSTem SENSor 1 4 REBoot 326 SYSTem SENSor 1 4 RESet 326 SYSTem SENSor 1 4 TEST 326 SYSTem SPEed 326 SYSTem STANdard CATalog 327 SYSTem STANdard PRESet 327 SYSTem STANdard PWSettings 327 SYSTem STANdard TRIGger SOURce 327 SYSTem TIME 327 SYSTem VERSion 328 TRIGger ALL ATRigger STATe 331 TRIGger...

Page 415: ...Gger 1 4 HOLDoff 333 TRIGger 1 4 HYSTeresis 333 TRIGger 1 4 LEVel 333 TRIGger 1 4 MASTer STATe 334 TRIGger 1 4 SLOPe 334 TRIGger 1 4 SOURce 334 TRIGger 1 4 SYNChronize STATe 335 TRIGger 1 4 IMMediate 333 UNIT 1 8 POWer 336 UNIT 1 8 POWer RATio 336 北京海洋兴业科技股份有限公司 证券代码 839145 电话 010 62176775 网址 www hyxyyq com ...

Page 416: ...nnel statistics display 140 Closing windows 93 Command description 193 Config Fence 70 Config Gates 122 Config Grid 116 Config Pulse 127 Config 165 Cont Av mode 29 Cont inuous statistics display 137 ContAv 66 Control bus 355 Control sequences of the IEC IEEE 1174 draft 363 Cursor function 116 122 125 127 133 D D A digital and analog display mode 93 Data bus 355 Data Valid 355 DAV 355 Delay Sensor ...

Page 417: ...Level Sensor Trigger 87 Limit Fail 339 LIMIT FAIL 58 Limit warning 161 Low reference power pulse 129 M Manual operation 49 Marker Statistics display 139 Marker Config 125 Marker Pos 126 Marker statistics display 136 Max Settling Time 82 Max Hold 120 Max Power Statistics display 138 Measurement menu 97 Measuring av burst power Burst Av mode 47 Measuring average power Cont Av mode 29 Memory expansio...

Page 418: ...alues 199 Resolution digital display mode 96 Rise time 128 Rohde Schwarz control sequences 363 RUN 58 S S Parameter Device 78 S N 58 Sample Error 167 Sample error message 349 Samples statistics display 140 Sampling rate 67 Save 142 Scale tab Statistics display 138 Secondary channel 120 Select setting 141 142 Select standard setting 143 Select Trace gate 123 Select Trace pulse 128 Selftest remote c...

Page 419: ... average 129 minimum 129 peak 129 Trace 1 2 119 120 Trace 1 2 statistics display 140 Trace Avg No 119 Trace display mode 115 Trace Func T slot 133 Trace function 120 Trace function settings 119 Trig 116 Trigger missing 339 Trunc Meas 167 U unit measured power 336 measured power ratio 336 Unit 118 Unpacking the meter 8 USB configuration 170 USB interface 368 USB settings 148 USBTMC standard 148 Use...

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