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Welcome to the Analog Demodulation Application

R&S

FSW-K7

User Manual 1173.9240.02 ─ 23

2 Welcome to the Analog Demodulation

Application

The R&S

FSW-K7 AM/FM/PM measurement demodulator option converts the

R&S

FSW into an analog modulation analyzer for amplitude-, frequency- or phase-

modulated signals. It measures not only characteristics of the useful modulation, but
also factors such as residual FM or synchronous modulation.

The digital signal processing in the R&S

FSW, used in the Spectrum application for

digital IF filters, is also ideally suited for demodulating AM, FM, or PM signals. The
firmware option R&S

FSW-K7 provides the necessary measurement functions.

The R&S FSW Analog Demodulation application features:

●

AM, FM, and PM demodulation, with various result displays:
–

Modulation signal versus time

–

Spectrum of the modulation signal (FFT)

–

RF signal power versus time

–

Spectrum of the RF signal

●

Determining maximum, minimum and average or current values in parallel over a
selected number of measurements

●

Maximum accuracy and temperature stability due to sampling (digitization) already
at the IF and digital down-conversion to the baseband (I/Q)

●

Error-free AM to FM conversion and vice versa, without deviation errors, frequency
response or frequency drift at DC coupling

●

Relative demodulation, in relation to a user-defined or measured reference value

This user manual contains a description of the functionality that the application pro-
vides, including remote control operation.

All functions not discussed in this manual are the same as in the base unit and are
described in the R&S

FSW User Manual. The latest version is available for download

at the product homepage

(

http://www2.rohde-schwarz.com/product/FSW.html

Installation

You can find detailed installation instructions in the R&S

FSW Getting Started manual

or in the Release Notes.

2.1 Starting the Analog Demodulation Application

Analog Demodulation is a separate application on the R&S

FSW.

To activate the Analog Demodulation application

1. Select the MODE key.

Starting the Analog Demodulation Application

Summary of Contents for FSW-K7

Page 1: ...R S FSW K7 Analog Demodulation Measurement Option User Manual User Manual 1173 9240 02 23 X2 Test Measurement...

Page 2: ...3 1339 02 2016 Rohde Schwarz GmbH Co KG M hldorfstr 15 81671 M nchen Germany Phone 49 89 41 29 0 Fax 49 89 41 29 12 164 Email info rohde schwarz com Internet www rohde schwarz com Subject to change Da...

Page 3: ...emodulation Bandwidth 26 4 3 Sample Rate and Demodulation Bandwidth 27 4 4 AF Triggers 28 4 5 AF Filters 29 4 6 Time Domain Zoom 29 4 7 Receiving Data Input and Providing Data Output 30 4 8 Analog Dem...

Page 4: ...n FM Signal 170 10 Optimizing and Troubleshooting the Measurement 176 11 Remote Commands for Analog Demodulation Measurements 177 11 1 Introduction 178 11 2 Common Suffixes 182 11 3 Activating Analog...

Page 5: ...and I Q Data Import and Export Description of general functions to import and export raw I Q measurement data How to Perform Measurements in the Analog Demodulation Application The basic procedure to...

Page 6: ...description of the remote control com mands with programming examples and information on maintenance instrument interfaces and error messages Includes the contents of the getting started manual Softwa...

Page 7: ...onventions Used in the Documentation 1 3 1 Typographical Conventions The following text markers are used throughout this documentation Convention Description Graphical user interface ele ments All nam...

Page 8: ...pointer in the display or a key on the instrument or on a key board 1 3 3 Notes on Screenshots When describing the functions of the product we use sample screenshots These screenshots are meant to il...

Page 9: ...rage or current values in parallel over a selected number of measurements Maximum accuracy and temperature stability due to sampling digitization already at the IF and digital down conversion to the b...

Page 10: ...ication The number of channels that can be configured at the same time depends on the avail able memory on the instrument Only one measurement can be performed at any time namely the one in the curren...

Page 11: ...channel tabs indicates that you are in MSRA MSRT operating mode For details on the MSRA operating mode see the R S FSW MSRA User Manual For details on the MSRT operating mode see the R S FSW Realtime...

Page 12: ...pend ing on the evaluation RF Spectrum CF Center frequency of input signal Sweep points Span measured span RF Time domain CF Center frequency of input signal Sweep points Time per division AF Spectrum...

Page 13: ...PM signal Basis for evaluation All evaluations are based on the I Q data set acquired during the measurement The spectrum of the modulated signal to be evaluated is determined by the demodulation band...

Page 14: ...sult Displays R S FSW K7 14 User Manual 1173 9240 02 23 Remote command LAY ADD 1 RIGH XTIM AM REL See LAYout ADD WINDow on page 301 FM Time Domain Displays the frequency spectrum of the demodulated FM...

Page 15: ...lt Displays R S FSW K7 15 User Manual 1173 9240 02 23 Remote command LAY ADD 1 RIGH XTIM FM See LAYout ADD WINDow on page 301 PM Time Domain Displays the phase deviations of the demodulated PM signal...

Page 16: ...9240 02 23 Remote command LAY ADD 1 RIGH XTIM PM See LAYout ADD WINDow on page 301 AM Spectrum Displays the modulation depth of the demodulated AM signal in or dB versus AF span The spectrum is calcu...

Page 17: ...Remote command LAY ADD 1 RIGH XTIMe AM REL AFSPectrum1 see LAYout ADD WINDow on page 301 FM Spectrum Displays the frequency deviations of the demodulated FM signal in Hz or dB versus AF span The spect...

Page 18: ...23 Remote command LAY ADD 1 RIGH XTIMe FM AFSPectrum1 see LAYout ADD WINDow on page 301 PM Spectrum Displays the phase deviations of the demodulated PM signal in rad or dB versus AF span The spectrum...

Page 19: ...9 User Manual 1173 9240 02 23 Remote command LAY ADD 1 RIGH XTIMe PM AFSPectrum1 see LAYout ADD WINDow on page 301 RF Time Domain Displays the RF power of the input signal versus time The level values...

Page 20: ...1173 9240 02 23 Remote command LAY ADD 1 RIGH XTIM AM see LAYout ADD WINDow on page 301 RF Spectrum Displays the spectrum of the input signal In contrast to the Spectrum application the frequency valu...

Page 21: ...Result Summary The result summary displays the results of the demodulation functions for all windows in a table For each demodulation the following information is provided Table 3 1 Result summary des...

Page 22: ...ts in relation to user defined or measured reference values are determined See Chapter 5 7 6 Result Table Settings on page 124 In addition the following general information for the input signal is pro...

Page 23: ...ined as well as the sort order In addition the detected peaks can be indicated in the diagram The peak list can also be exported to a file for analysis in an external application You can define search...

Page 24: ...9 Time Domain Zoom 29 Receiving Data Input and Providing Data Output 30 Analog Demodulation in MSRA MSRT Operating Mode 45 4 1 Demodulation Process The demodulation process is shown in Figure 4 1 All...

Page 25: ...Measurement Basics R S FSW K7 25 User Manual 1173 9240 02 23 Figure 4 1 Block diagram of software demodulator Demodulation Process...

Page 26: ...emodulation bandwidth determines the span of the signal that is demodulated It is not the 3 dB bandwidth of the filter but the useful bandwidth which is distortion free with regard to phase and amplit...

Page 27: ...me can be determined according to the following formula Meas timemax Sample countmax sample rate The minimum trigger offset is Meas timemax Table 4 1 Available demodulation bandwidths and correspondin...

Page 28: ...time on the stability of measurement results Despite amplitude and frequency modulation the display of carrier power and carrier frequency offset is stable This is achieved by a digital filter which...

Page 29: ...Zoom function This is useful if the measurement time is very large and thus each sweep point repre sents a large time span The time domain zoom function distributes the available sweep points only amo...

Page 30: ...of output such as noise or trigger signals 4 7 1 RF Input Protection The RF input connector of the R S FSW must be protected against signal levels that exceed the ranges specified in the data sheet T...

Page 31: ...y connecting a probe to the BASEBAND INPUT I connector and switching the input source to this connector in the RF input configuration see Input Connector on page 55 The probe s attenuation is compensa...

Page 32: ...nector on page 31 As opposed to common RF input processing a transducer is activated before the common process to compensate for the additional path of the redirected signal Probe signals that are red...

Page 33: ...or Connections The external generator is controlled either via a LAN connection or via the EXT GEN CONTROL GPIB interface of the R S FSW supplied with the option For more information on configuring in...

Page 34: ...nsmission characteristics of a two port network The external generator is used as a signal source It is connected to the input connector of the DUT The input of the R S FSW is fed from the output of t...

Page 35: ...ce on the R S FSW via SETUP Reference External Refer ence For more information on external references see the Instrument Setup section in the R S FSW User Manual Connection errors If no external gener...

Page 36: ...T02 SME02 X SMT03 SME03 X SMT06 SME06 X SMU02 X SMF100A X SMU02B31 2 X SMF22 X SMU03 2 X SMF22B2 X SMU03B31 2 X SMF43 X SMU04 2 X SMF43B2 X SMU04B31 2 X SMG SMU06 2 X SMGL SMU06B31 2 X SMGU SMV03 SMH...

Page 37: ...up files are provided If necessary these files can be edited or duplicated for varying measurement setups or other instruments The existing setup files can be displayed in an editor in read only mode...

Page 38: ...ce trace from the measurement results This process is referred to as normalization and can be activated or deactiva ted as required If normalization is activated NOR is displayed in the channel bar ne...

Page 39: ...d trace on page 40 Restoring the calibration settings If the measurement settings no longer match the instrument settings with which the calibration was performed indicated by the APX or no label next...

Page 40: ...tude settings However as opposed to the reference level this reference line only affects the y axis scaling in the diagram it has no effect on the expected input power level or the hardware settings T...

Page 41: ...rrently defined span of the R S FSW unless limited by the range of the signal generator Automatic coupling If automatic coupling is used the output frequency of the generator source frequency is calcu...

Page 42: ...quencies to be set to the generator before the beginning of the first sweep Then the R S FSW starts the sweep and the next frequency point is selected by both the R S FSW and the gen erator using the...

Page 43: ...urement APX approximation Normalization on Deviation from the reference setting occurs Aborted normalization or no calibration performed yet Error and status messages The following status and error me...

Page 44: ...ources The R S FSW provides a connector NOISE SOURCE CONTROL with a voltage sup ply for an external noise source By switching the supply voltage for an external noise source on or off in the firmware...

Page 45: ...n provide output to another device either to pass on the internal trig ger signal or to indicate that the R S FSW itself is ready to trigger The trigger signal can be output by the R S FSW automatical...

Page 46: ...l is correlated in time to others Thus an analysis line has been introduced The analysis line is a common time marker for all MSRA slave applications It can be positioned in any MSRA slave application...

Page 47: ...40 02 23 For details on the MSRA operating mode see the R S FSW MSRA User Manual For details on the MSRT operating mode see the R S FSW Real Time Spectrum Applica tion and MSRT Operating Mode User Man...

Page 48: ...settings For commonly performed measurements standard setup files are provided for quick and easy configuration Simply load an existing standard settings file and if necessary adapt the measurement se...

Page 49: ...tings is provided in the Overview In addition to the main measurement settings the Overview provides quick access to the main settings dialog boxes The individual configuration steps are displayed in...

Page 50: ...easurement settings in the current channel to their default values Do not confuse the Channel button with the PRESET key which restores the entire instrument to its default values and thus closes all...

Page 51: ...Select the storage location of the file on the instrument or an external drive The Drive indicates the internal C or any connected external drives e g a USB storage device The Path contains the drive...

Page 52: ...n be restored using the Restore Stand ards function see Restore Standard Files on page 52 Restore Standard Files Setup Standard Restores the standards predefined by Rohde Schwarz available at the time...

Page 53: ...ns to the first are re established This may cause a short delay in data transfer after switching the input source External mixers are not supported in MSRA MSRT mode Radio Frequency Input 53 External...

Page 54: ...upled LO signal becomes visible at the RF frequency 0 Hz This effect is referred to as LO feedthrough To avoid the LO feedthrough the spectrum analyzer provides an alternative signal path to the A D c...

Page 55: ...ata is taken from the RF INPUT connector default or the optional BASEBAND INPUT I connector This setting is only available if the optional Analog Baseband Interface is installed and active for input I...

Page 56: ...f activated ExtMix is indicated in the channel bar of the application together with the used band see Band on page 57 Remote command SENSe MIXer STATe on page 192 RF Start RF Stop Displays the start a...

Page 57: ...and can be selected freely The frequency range for the user defined band is defined via the harmonics configuration see Range 1 2 on page 58 Remote command SENSe MIXer HARMonic BAND on page 195 RF Ove...

Page 58: ...used for conversion changes see Harmonic Order on page 58 Which harmonics are supported depends on the mixer type Remote command SENSe MIXer HARMonic TYPE on page 197 Harmonic Order Mixer Settings Ha...

Page 59: ...Manual For details on importing tables see Import Table on page 62 Remote command Average for range 1 SENSe MIXer LOSS LOW on page 198 Table for range 1 SENSe MIXer LOSS TABLe LOW on page 198 Average...

Page 60: ...the result can be displayed in any of the traces 1 to 3 Unwanted mixer products are suppressed in this calculated trace Note that automatic signal identification is only available for measurements tha...

Page 61: ...tab you configure and manage conversion loss tables Conversion loss tables consist of value pairs that describe the correction values for conversion loss at certain frequencies The correction values...

Page 62: ...ency range see Conversion loss on page 58 Note When using the optional 2 GHz bandwidth extension R S FSW B2000 special conversion loss tables are required Supported tables have the file extension b2g...

Page 63: ...which the table is stored in the C R_S INSTR USER cvl directory on the instrument The name of the table is identical with the name of the file without extension in which the table is stored This setti...

Page 64: ...c on page 201 Bias The bias current which is required to set the mixer to its optimum operating point It corresponds to the short circuit current The bias current can range from 10 mA to 10 mA The act...

Page 65: ...d last reference value The current configuration of the conversion loss function as described by the position value entries is displayed in the preview pane to the right of the table Remote command SE...

Page 66: ...ale Level 67 Connected Instrument 67 DigIConf 67 Digital I Q Input State Enables or disable the use of the Digital IQ input source for measurements Digital IQ is only available if the optional Digital...

Page 67: ...sample with the magnitude 1 Full Scale Level if provided by connected instrument Remote command INPut DIQ CDEVice on page 213 DigIConf Starts the optional R S DigIConf application This function is av...

Page 68: ...69 High Accuracy Timing Trigger Baseband RF 69 Center Frequency 70 Analog Baseband Input State Enables or disable the use of the Analog Baseband input source for measurements Analog Baseband is only a...

Page 69: ...be the Single ended setting must be used for all probes Single Ended I Q data only Differential I Q and inverse I Q data Not available for R S FSW85 Remote command INPut IQ BALanced STATe on page 210...

Page 70: ...ror is displayed In this case adjust the center frequency or the analysis bandwidth Remote command SENSe FREQuency CENTer on page 242 5 3 1 5 Probe Settings Access INPUT OUTPUT Input Source Config Pro...

Page 71: ...ct the action that you want to start from the probe Run single Starts one data acquisition No action Prevents unwanted actions due to unintended usage of the microbut ton Remote command SENSe PROBe p...

Page 72: ...ors see Chapter 4 7 4 2 Overview of Supported Generators on page 35 For information on generator setup files see Chapter 4 7 4 3 Generator Setup Files on page 37 Remote command SYSTem COMMunicate RDEV...

Page 73: ...RDEVice GENerator ADDRess on page 234 Reference Selects the internal R S FSW or an external frequency reference to synchronize the R S FSW with the generator default internal Remote command SOURce EXT...

Page 74: ...al generator Remote command SOURce EXTernal STATe on page 232 Source Power The output power of the external generator The default output power is 20 dBm The range is specified in the data sheet Remote...

Page 75: ...EQuency COUPling STATe on page 230 Manual Source Frequency Defines the fixed frequency to be used by the generator Remote command SOURce EXTernal FREQuency on page 230 Automatic Source Frequency Numer...

Page 76: ...the config ured generator frequency and the stop value defined for the R S FSW Source Calibration Functions The calibration functions of the external generator are available only if external genera t...

Page 77: ...open circuit short circuit are carried out the refer ence trace is calculated by averaging the two measurements The order of the two cali bration measurements is irrelevant Remote command SENSe CORRec...

Page 78: ...s 100 the bottom is 0 By default the 0 dB line is displayed at the top of the diagram 100 This setting is only available if normalization is on see Source Calibration Normalize on page 77 The referenc...

Page 79: ...extension R S FSW B2000 General Settings 79 Alignment 80 General Settings Access INPUT OUTPUT B2000 Config Settings The required connections between the R S FSW and the oscilloscope are illustrated i...

Page 80: ...dialog box The alignment status is also displayed see Align ment on page 80 Note The IP address computer name is maintained after a PRESET and is transfer red between applications Remote command SYSTe...

Page 81: ...640 MHZ connector on the R S FSW to the CH1 input on the oscil loscope To perform the alignment select the Alignment button If necessary in particular after the firmware on the oscilloscope has been...

Page 82: ...the alignment select the Continue Alignment button After the second alignment step has been completed successfully a new dialog box is displayed In order to switch from alignment mode to measurement m...

Page 83: ...SCilloscope ALIGnment DATE on page 207 5 3 2 Power Sensor The R S FSW can also analyze data from a connected power sensor For background information on working with power sensors see the R S FSW User...

Page 84: ...ower sensor is being used as a trigger see Using the power sensor as an external trigger on page 86 continuous update is not possible this setting is ignored Remote command SENSe PMETer p UPDate STATe...

Page 85: ...ts the unit with which the measured power is to be displayed Available units are dBm dB W and If dB or is selected the display is relative to the reference value that is defined with either the Meas R...

Page 86: ...started This setting is only available if manual averaging is selected Meas Time Average setting The values for the average count range from 0 to 256 in binary steps 1 2 4 8 For average count 0 or 1...

Page 87: ...the trigger level Remote command SENSe PMETer p TRIGger HYSTeresis on page 228 Trigger Holdoff Using the power sensor as an external trigger Defines the minimum time in seconds that must pass between...

Page 88: ...Scaling on page 243 Reference Level 88 Shifting the Display Offset 89 Unit 89 Setting the Reference Level Automatically Auto Level 89 Mechanical Attenuation 90 Attenuation Mode Value 90 Using Electro...

Page 89: ...d to adjust the hardware settings to the expected signal ignores any Reference Level Offset Thus it is important to keep in mind the actual power level the R S FSW must handle Do not rely on the displ...

Page 90: ...F attenuation can be set automatically as a function of the selected reference level Auto mode This ensures that no overload occurs at the RF INPUT connector for the current reference level It is the...

Page 91: ...isplayed in the status bar Remote command INPut EATT STATe on page 247 INPut EATT AUTO on page 247 INPut EATT on page 246 Input Settings Some input settings affect the measured amplitude of the signal...

Page 92: ...type That corresponds to 25 in series to the input impe dance of the instrument The correction value in this case is 1 76 dB 10 log 75 50 This value also affects the unit conversion see Reference Leve...

Page 93: ...etails Remote command DISPlay WINDow n TRACe t Y SCALe RLEVel on page 244 Shifting the Display Offset Reference Level Defines an arithmetic level offset This offset is added to the measured level In s...

Page 94: ...you can optimize the reference level further Decrease the attenuation level manually to the lowest possible value before an overload occurs then decrease the reference level in the same way When usin...

Page 95: ...ency span span 0 spanmin 2 fcenter fmax spanmin 2 fmax and spanmin depend on the instrument and are specified in the data sheet Remote command SENSe FREQuency CENTer on page 242 Center Frequency Steps...

Page 96: ...P LINK on page 243 SENSe FREQuency CENTer STEP LINK FACTor on page 243 SENSe FREQuency CENTer STEP on page 242 5 4 Trigger Configuration Access Overview Trigger Triggering means to capture the interes...

Page 97: ...100 RF Power 101 Power Sensor 101 Trigger Level 101 Trigger Offset 102 Hysteresis 102 Drop Out Time 102 Coupling 102 Slope 103 Trigger Holdoff 103 Trigger Source In the Analog Demodulation application...

Page 98: ...the TRIGGER 1 INPUT connector External Trigger 2 Trigger signal from the TRIGGER 2 INPUT OUTPUT connector Note Connector must be configured for Input in the Outputs con figuration see Trigger 2 3 on...

Page 99: ...a fixed frequency e g zero span or I Q measurements the third IF represents the center frequency This trigger source is only available for RF input It is not available for input from the optional Digi...

Page 100: ...ates up to 200 Msps only the general purpose bits GP0 and GP1 are available as a Digital I Q trigger source The following table describes the assignment of the general purpose bits to the LVDS connect...

Page 101: ...utomatically switched to Free Run Remote command TRIG SOUR RFP see TRIGger SEQuence SOURce on page 262 Power Sensor Trigger Source Uses an external power sensor as a trigger source This option is only...

Page 102: ...Out Time Defines the time the input signal must stay below the trigger level before triggering again Note For input from the optional Analog Baseband Interface using the baseband power trigger BBP the...

Page 103: ...ignored Remote command TRIGger SEQuence IFPower HOLDoff on page 258 5 4 2 Trigger Input and Output Settings Access Overview Trigger Trigger In Out tab Trigger 2 3 103 Output Type 104 Level 104 Pulse...

Page 104: ...port OTYPe on page 266 Level Output Type Trigger 2 3 Defines whether a high 1 or low 0 constant signal is sent to the trigger output con nector The trigger pulse level is always opposite to the consta...

Page 105: ...A MSRT Master channel actually cap tures data from the input signal The data acquisition settings for the Analog Demodu lation application in MSRA MSRT mode define the analysis interval For details on...

Page 106: ...r see Chapter 4 3 Sample Rate and Demodulation Bandwidth on page 27 Flat Default Gauss Optimizes the settling behavior of the filter Remote command SENSe BWIDth DEMod TYPE on page 255 Measurement Time...

Page 107: ...inuously until stopped This is the default setting While the measurement is running the Continuous Sweep softkey and the RUN CONT key are highlighted The running measurement can be aborted by selectin...

Page 108: ...ng over multiple sequences In this case no trace averaging is performed Furthermore the RUN SINGLE key controls the Sequencer not individual sweeps RUN SINGLE starts the Sequencer in single mode If th...

Page 109: ...rams If the trace modes Average Max Hold or Min Hold are set this value also deter mines the number of averaging or maximum search procedures In continuous sweep mode if sweep count 0 default averagin...

Page 110: ...emod 110 Demodulation Spectrum 113 AF Filter 116 Scaling 119 Units 123 Result Table Settings 124 5 7 1 Basic Demodulation Measurement Parameters Demod Access Overview Demod Settings Demod Or Meas Setu...

Page 111: ...Controls the automatic correction of the frequency offset and phase offset of the input signal This function is only available for FM or PM time domain evaluations FM time evaluation If DC is selected...

Page 112: ...tes the time domain zoom mode ON Activates the time domain zoom OFF Deactivates the time domain zoom and restores the original display If more measured values than measurement points are available sev...

Page 113: ...activates the phase wrap On The phase is displayed in the range 180 For example if the phase exceeds 180 360 is subtracted from the phase value with the display thus showing 180 Off The phase is not w...

Page 114: ...mote command SENSe ADEMod n AF STARt on page 272 AF Stop Defines the stop frequency of the demodulated data to evaluate The maximum AF stop frequency corresponds to half the demodulation bandwidth Rem...

Page 115: ...d in the Input and Data Acquisition configuration Center frequency 115 Span 115 Demodulation Bandwidth 116 RF Full Span 116 Center frequency Defines the center frequency of the signal in Hertz The all...

Page 116: ...apter 4 2 Demodulation Bandwidth on page 26 For details on the relation between demodulation bandwidth and sample rate refer to Chapter 4 3 Sample Rate and Demodulation Bandwidth on page 27 Remote com...

Page 117: ...0 Hz demodulation bandwidth 3 MHz 300 Hz 800 Hz demodulation bandwidth 8 MHz Manual A high pass filter with the manually defined frequency is used Note If online demodulation output is active the pred...

Page 118: ...ve low pass filters Relative filters 3 dB can be selected in of the demodulation bandwidth The fil ters are designed as 5th order Butterworth filter 30 dB octave and active for all demodulation bandwi...

Page 119: ...dth 40 MHz 50 s 6 4 kHz demodulation bandwidth 18 MHz 75 s 6 4 kHz demodulation bandwidth 18 MHz 750 s 800 Hz demodulation bandwidth 3 MHz Depending on the deemphasis filter a minimum demodulation ban...

Page 120: ...2 AF Auto Scale 122 Dev per Division Db per Division Defines the modulation depth or the phase deviation or frequency deviation per divi sion logarithmic 0 1 to 20 dB AM display 0 0001 to 1000 FM disp...

Page 121: ...ignal and therefore cannot be activated simultaneously AF spectrum display In the default setting the reference value defines the modulation depth or the FM PM deviation at the upper diagram border Po...

Page 122: ...thmic and linear display of the modulation depth or the phase deviation or the frequency deviation Remote command DISPlay WINDow n TRACe t Y SPACing on page 251 AF Auto Scale Activates automatic scali...

Page 123: ...tings The display is only set once it is not adapted further if the measurement settings are changed again Remote command DISPlay WINDow n TRACe t Y SCALe AUTO ONCE on page 249 Scaling Defines the sca...

Page 124: ...lculation of the THD in the Result Summary Remote command UNIT n THD on page 280 Relative Unit Defines the unit for relative demodulation results see Chapter 5 7 6 Result Table Settings on page 124 Re...

Page 125: ...h the demodulation result is determined The modes are similar to those for the entire trace see Trace Mode on page 134 Clear Write Overwrite mode the detector value is overwritten by each sweep This i...

Page 126: ...ors Note A reference value 0 would provide infinite results and is thus automatically cor rected to 0 1 If necessary the detectors are activated Remote command CONFigure ADEMod RESults AM DETector det...

Page 127: ...dulation Output Settings Access Overview Output Analog Demod The demodulated signal in time domain results can be output to the IF VIDEO DEMOD output connector on the R S FSW Output is not possible if...

Page 128: ...s the result display whose results are output Only time domain results can be selected All currently active time domain result displays are listed Current Focus dynamically switches to the currently s...

Page 129: ...ulation also apply to the online output See Chapter 5 7 3 AF Filter on page 116 Remote command OUTPut ADEMod ONLine AF CFRequency on page 241 Phones Output In addition to sending the output to the IF...

Page 130: ...cally Auto Freq 130 Setting the Reference Level Automatically Auto Level 131 Resetting the Automatic Measurement Time Meastime Auto 131 Changing the Automatic Measurement Time Meastime Manual 131 Uppe...

Page 131: ...is performed on the connected oscilloscope Y axis scaling on the oscil loscope is limited to a minimum of 5mV per division You can change the measurement time for the level measurement if necessary s...

Page 132: ...signal you can define a hysteresis This setting defines a lower threshold the signal must fall below compared to the last measure ment before the reference level is adapted automatically Remote comma...

Page 133: ...6 3 2 Marker Search Settings and Positioning Functions 143 6 3 3 Measuring Phase Noise 145 6 3 4 Marker Function Configuration 146 6 4 Limit Line Settings and Functions 154 6 4 1 Limit Line Managemen...

Page 134: ...TRACe t STATe on page 289 Trace Mode Defines the update mode for subsequent traces Clear Write Overwrite mode the trace is overwritten by each sweep This is the default setting Max Hold The maximum v...

Page 135: ...In all cases that require a new measurement after parameter changes the trace is reset automatically to avoid false results e g with span changes For applications that require no reset after paramete...

Page 136: ...n Trace Settings Preset All Traces Trace 1 Clear Write Traces 2 6 Blank Set Trace Mode Max Avg Min Trace 1 Max Hold Trace 2 Average Trace 3 Min Hold Traces 4 6 Blank Set Trace Mode Max ClrWrite Min Tr...

Page 137: ...race and table row by table row Remote command FORMat DEXPort TRACes on page 311 Include Instrument Measurement Settings Includes additional instrument and measurement settings in the header of the ex...

Page 138: ...in the Data Manage ment section of the R S FSW User Manual Remote command MMEMory STORe n TRACe on page 310 6 3 Working with Markers in the R S FSW Analog Demodulation application Access Overview Ana...

Page 139: ...t only the first marker is active Selected Marker 139 Marker State 139 Marker Position X value 140 Marker Type 140 Reference Marker 140 Linking to Another Marker 140 Assigning the Marker to a Trace 14...

Page 140: ...MARKer m STATe on page 320 CALCulate n DELTamarker m STATe on page 324 Reference Marker Defines a marker as the reference marker which is used to determine relative analysis results delta marker value...

Page 141: ...er m AOFF on page 320 6 3 1 2 General Marker Settings Access Overview Analysis Marker Marker Settings Or Marker Markers Settings tab Some general marker settings allow you to influence the marker beha...

Page 142: ...t to the peak value of the trace assigned to marker 1 and a delta marker to the next peak The fixed refer ence marker is set to the position of marker 1 at the peak value The delta marker refers to th...

Page 143: ...rker Search or Marker Search Markers are commonly used to determine peak values i e maximum or minimum val ues in the measured signal Configuration settings allow you to influence the peak search resu...

Page 144: ...tion opens a dialog box to select and activate or deactivate one or more markers quickly Remote command CALCulate n MARKer m STATe on page 320 CALCulate n DELTamarker m STATe on page 324 Peak Search S...

Page 145: ...DELTamarker m MINimum LEFT on page 342 CALCulate n DELTamarker m MINimum RIGHt on page 343 6 3 3 Measuring Phase Noise Access Overview Analysis Marker Functions Phase Noise or MKR FUNC Select Marker F...

Page 146: ...or all evaluations The following table indicates which functions are available for which evaluations Evaluation n dB down Phase Noise Reference Fixed AF time X AF spectrum X X X RF time X X RF spectru...

Page 147: ...t the carrier is outside the displayed frequency range after phase noise mea surement is started Or a notch filter can be switched on to suppress the carrier Alternatively the reference point can be d...

Page 148: ...plication this function is only available for normal mark ers If activated the normal markers display the phase noise measured at their current position in the marker table For details see Chapter 6 3...

Page 149: ...mits The peak search can be restricted to a search area The search area is defined by limit lines which are also indicated in the diagram In addition a minimum value threshold can be defined as a furt...

Page 150: ...the frequencies and levels of peaks in the spectrum It is updated automatically after each sweep How many peaks are displayed can be defined as well as the sort order In addition the detected peaks c...

Page 151: ...k List State 151 Sort Mode 151 Maximum Number of Peaks 152 Peak Excursion 152 Displaying Marker Numbers 152 Exporting the Peak List 152 Peak List State Activates deactivates the marker peak list If ac...

Page 152: ...d to an ASCII file DAT for analysis in an external appli cation Remote command MMEMory STORe n PEAK on page 350 FORMat DEXPort DSEParator on page 310 6 3 4 3 Measuring Characteristic Bandwidths n dB D...

Page 153: ...splayed Table 6 1 n dB down marker function results Label Description M1 Current position and level of marker 1 ndB Offset value n dB down ndB down Bw PWid Determined bandwidth or pulse width zero spa...

Page 154: ...emote command CALCulate n MARKer m FUNCtion NDBDown FREQuency on page 351 CALCulate n MARKer m FUNCtion NDBDown TIME on page 353 6 3 4 4 Deactivating All Marker Functions Access Overview Analysis Mark...

Page 155: ...s you to determine which limit lines are available and can be used for the current measurement For details on settings for individual lines see Chapter 6 4 2 Limit Line Details on page 157 Name 155 Un...

Page 156: ...TRACe t CHECk on page 365 Comment An optional description of the limit line Included Lines in Overview View Filter Defines which of the stored lines are included in the overview Show compat ible Only...

Page 157: ...FSet on page 362 Create New Line Creates a new limit line Edit Line Edit an existing limit line configuration Copy Line Copy the selected limit line configuration to create a new line Remote command C...

Page 158: ...the limit line name All names must be compatible with Windows conventions for file names The limit line data is stored under this name with a LIN extension Remote command CALCulate n LIMit k NAME on p...

Page 159: ...ge 358 CALCulate n LIMit k UPPer MODE on page 361 CALCulate n LIMit k CONTrol DOMain on page 356 Y Axis Describes the vertical axis on which the data points of the limit line are defined Includes the...

Page 160: ...CALCulate n LIMit k UPPer SHIFt on page 362 Save Saves the currently edited limit line under the name defined in the Name field Import Opens a file selection dialog box and loads the limit line from...

Page 161: ...e is indicated on the icon Position 161 Show Line 161 Position Defines the position of the analysis line in the time domain The position must lie within the measurement time of the multistandard measu...

Page 162: ...raged or restricted to peak values I Q data is stored as it was captured without further processing The data is stored as complex values in 32 bit floating point format Multi channel data is not suppo...

Page 163: ...ocess I Q data such as the I Q Analyzer or optional applications Note that the I Q data must have a specific format as described in the R S FSW I Q Analyzer and I Q Input User Manual I Q import is not...

Page 164: ...red on the instrument are stored to volatile memory which is restricted to 256 MB Thus a Memory full error can occur although the hard disk indicates that storage space is still available To store dat...

Page 165: ...ode by pressing the RUN SINGLE key 3 Select the Open icon in the toolbar 4 Select the I Q Import softkey 5 Select the storage location and the file name with the iq tar file extension 6 Select Open Th...

Page 166: ...I Q Data Import and Export R S FSW K7 166 User Manual 1173 9240 02 23 4 Drag the I Q parameter XML file e g example xml into your web browser How to Export and Import I Q Data...

Page 167: ...Offset multistandard mode only the offset of the analysis interval from the start of the capture buffer 5 Optionally select the Trigger button and define a trigger for data acquisition for example an...

Page 168: ...Export Trace to ASCII File c Define a file name and storage location and select OK 8 1 How to Export Trace Data and Numerical Results The measured trace data and numerical measurement results in tabl...

Page 169: ...selection dialog box select the storage location and file name for the export file 6 If necessary change the decimal separator to be used for the ASCII export file 7 Select the data format of the ASCI...

Page 170: ...sing the following devices An R S FSW with application firmware R S FSW K7 Analog Demodulation A vector signal generator e g R S SMW Signal Generator R S FSW Figure 9 1 Test setup Signal generator set...

Page 171: ...f the sig nal 6 Adjust the y axis scaling to the measured frequency deviation automatically by selecting the Scale Config softkey and in the Scaling tab setting AF Auto Scale to ON Figure 9 3 Auto sca...

Page 172: ...5 MHz is much too large the actual signal takes up only a small part of the displayed range That means that any noise or additional signals apart from the FM signal of interest may be included in the...

Page 173: ...ul to display only a small range from the demodulated bandwidth However this means the RF spectrum will still not show the entire signal 10 Increase the span manually to show the entire demodulated ba...

Page 174: ...Spectrum diagram is scaled according to the current measurement automatically Each diagram is scaled individually so that the reference values at the top of the two diagrams can differ 100 kHz in the...

Page 175: ...the top of both y axes are now identical the reference values indicated in the window title bars are not This is due to the fact that by default in AF time domain displays the reference value is defin...

Page 176: ...hould be appropriate This procedure is demonstrated in the measurement example described in Chapter 9 Measurement Example Demodulating an FM Signal on page 170 For further recommendations on finding t...

Page 177: ...S FSW User Manual General R S FSW Remote Commands The application independent remote commands for general tasks on the R S FSW are also available for Analog Demodulation measurements and are describe...

Page 178: ...re complete description refer to the User Manual of the R S FSW Remote command examples Note that some remote command examples mentioned in this general introduction may not be supported by this parti...

Page 179: ...not matter Example SENSe FREQuency CENTer is the same as SENS FREQ CENT 11 1 3 Numeric Suffixes Some keywords have a numeric suffix if the command can be applied to multiple instances of an object In...

Page 180: ...ution In the short form without optional keywords BAND 1MHZ would have the same effect as BWID 1MHZ 11 1 6 SCPI Parameters Many commands feature one or more parameters If a command supports more than...

Page 181: ...er In case of physical quantities it applies the basic unit e g Hz in case of frequencies The number of dig its after the decimal point depends on the type of numeric value Example Setting SENSe FREQu...

Page 182: ...ASCII character introduces the data block The next number indicates how many of the following digits describe the length of the data block In the example the 4 follow ing digits indicate the length to...

Page 183: ...measurement channel of the same type and with the identical measurement set tings The name of the new channel is the same as the copied channel extended by a consecutive number e g IQAnalyzer IQAnalyz...

Page 184: ...e2 String containing the name of the new channel Note If the specified name for a new channel already exists the default name extended by a sequential number is used for the new channel see INSTrument...

Page 185: ...FDD UE R S FSW K73 MWCD 3G FDD UE 802 11ad R S FSW K95 WIGIG 802 11ad Amplifier Measurements R S FSW K18 AMPLifier Amplifier Analog Demodulation R S FSW K7 ADEM Analog Demod Avionics R S FSW K15 AVIo...

Page 186: ...el you want to rename ChannelName2 String containing the new channel name Note that you cannot assign an existing channel name to a new channel this will cause an error Example INST REN IQAnalyzer2 IQ...

Page 187: ...g predefined standard set tings This allows for quick and easy configuration for commonly performed measure ments For details see Chapter 5 2 Configuration According to Digital Standards on page 51 Fo...

Page 188: ...nt Analog Demodulation measurement configuration Standard definitions are stored in an xml file The default directory for Analog Demodu lation standards is C R_S INSTR USER predefined AdemodPredefined...

Page 189: ...see the R S FSW User Manual The command works only if the overload condition has been eliminated first Usage Event INPut CONNector ConnType Determines whether the RF input data is taken from the RF in...

Page 190: ...Te State Activates an additional internal high pass filter for RF input signals from 1 GHz to 3 GHz This filter is used to remove the harmonics of the R S FSW in order to mea sure the harmonics for a...

Page 191: ...able for measurements with the optional Digital Baseband Interface Parameters Impedance 50 75 RST 50 Example INP IMP 75 Manual operation See Unit on page 89 See Impedance on page 92 INPut SELect Sourc...

Page 192: ...tings 199 Programming Example Working with an External Mixer 203 Basic Settings The basic settings concern general usage of an external mixer SENSe MIXer STATe 192 SENSe MIXer BIAS HIGH 192 SENSe MIXe...

Page 193: ...lue Range 13 0 dBm to 17 0 dBm Increment 0 1 dB RST 15 5 dBm Example MIX LOP 16 0dBm Manual operation See LO Level on page 59 SENSe MIXer SIGNal State This command specifies whether automatic signal d...

Page 194: ...5 SENSe MIXer HARMonic BAND 195 SENSe MIXer HARMonic HIGH STATe 196 SENSe MIXer HARMonic HIGH VALue 196 SENSe MIXer HARMonic TYPE 197 SENSe MIXer HARMonic LOW 197 SENSe MIXer LOSS HIGH 197 SENSe MIXer...

Page 195: ...Stop on page 56 SENSe MIXer HARMonic BAND PRESet This command restores the preset frequency ranges for the selected standard wave guide band Note Changes to the band and mixer settings are maintained...

Page 196: ...red to as A is now named KA SENSe MIXer HARMonic HIGH STATe State This command specifies whether a second high harmonic is to be used to cover the band s frequency range Parameters State ON OFF 1 0 RS...

Page 197: ...armOrder numeric value Range 2 to 61 USER band for other bands see band definition RST 2 for band F Example MIX HARM 3 Manual operation See Harmonic Order on page 58 SENSe MIXer LOSS HIGH Average This...

Page 198: ...Average This command defines the average conversion loss to be used for the entire low first range Parameters Average numeric value Range 0 to 100 RST 24 0 dB Default unit dB Example MIX LOSS 20dB Ma...

Page 199: ...ned to the range Before this command can be performed the conversion loss table must be selected see SENSe CORRection CVL SELect on page 202 This command is only available with option B21 External Mix...

Page 200: ...n be performed the conversion loss table must be selected see SENSe CORRection CVL SELect on page 202 This command is only available with option B21 External Mixer installed Example CORR CVL SEL LOSS_...

Page 201: ...This command defines the harmonic order for which the conversion loss table is to be used This setting is checked against the current mixer setting before the table can be assigned to the range Befor...

Page 202: ...installed Parameters PortType 2 3 RST 2 Example CORR CVL SEL LOSS_TAB_4 Selects the conversion loss table CORR CVL PORT 3 Manual operation See Mixer Type on page 65 SENSe CORRection CVL SELect FileNam...

Page 203: ...l not return useful results Preparing the instrument Reset the instrument RST Activate the use of the connected external mixer SENS MIX ON Configuring basic mixer behavior Set the LO level of the mixe...

Page 204: ...ON Configuring a new conversion loss table Define cvl table for range 1 of band as described in previous example extended V band SENS CORR CVL SEL UserTable SENS CORR CVL COMM User defined conversion...

Page 205: ...oscope STATe 206 SYSTem COMMunicate RDEVice OSCilloscope ALIGnment STEP STATe 206 SYSTem COMMunicate RDEVice OSCilloscope ALIGnment DATE 207 SYSTem COMMunicate RDEVice OSCilloscope IDN 207 SYSTem COMM...

Page 206: ...alignment of the oscilloscope itself and the oscilloscope ADC for the optional 2 GHz bandwidth extension R S FSW B2000 The correction data for the oscilloscope including the connection cable between...

Page 207: ...Schwarz RTO 1316 1000k14 200153 2 45 1 1 Usage Query only Manual operation See TCPIP Address or Computer name on page 80 SYSTem COMMunicate RDEVice OSCilloscope LEDState Returns the state of the LAN c...

Page 208: ...0 SYSTem COMMunicate RDEVice OSCilloscope TCPip Address Defines the TCPIP address or computer name of the oscilloscope connected to the R S FSW via LAN Note The IP address is maintained after a PRESET...

Page 209: ...ection with 50 termination passes both DC and AC components of the trigger signal CDLimit Direct connection with 1 M termination passes both DC and AC components of the trigger signal AC Connection th...

Page 210: ...ines Parameters State ON 1 Differential OFF 0 Single ended RST 1 Example INP IQ BAL OFF Manual operation See Input Configuration on page 69 INPut IQ FULLscale AUTO State This command defines whether t...

Page 211: ...one for the in phase component and one for the quadrature compo nent I The in phase component of the input signal is filtered and resampled to the sample rate of the application If the center fre quen...

Page 212: ...commands for the R S DigIConf software always begin with SOURce EBOX Such commands are passed on from the R S FSW to the R S DigIConf automatically which then configures the R S EX IQ BOX via the USB...

Page 213: ...rt name used by the connected device SampleRate Maximum or currently used sample rate of the connected device in Hz depends on the used connection protocol version indica ted by SampleRateType paramet...

Page 214: ...e level automat ically if the full scale level changes This command is only available if the optional Digital Baseband Interface is installed Parameters State ON OFF 1 0 RST 0 Manual operation See Adj...

Page 215: ...mmand is only available if the optional Digital Baseband Interface is installed Parameters State ON OFF 1 0 RST 0 Manual operation See Input Sample Rate on page 66 11 4 2 6 Setting up Probes Probes ca...

Page 216: ...ID PARTnumber Queries the R S part number of the probe Suffix p 1 2 3 Selects the connector 1 Baseband Input I 2 Baseband Input Q 3 RF currently not supported use 1 with RF Input Connec tor setting B...

Page 217: ...acquisition NOACtion Nothing is started on pressing the micro button RST RSINgle Manual operation See Microbutton Action on page 71 SENSe PROBe p SETup NAME Queries the name of the probe Suffix p 1 2...

Page 218: ...Connec tor setting Baseband Input I Return values Type String containing one of the following values None no probe detected active differential active single ended Usage Query only 11 4 2 7 Working wi...

Page 219: ...mberSensors Number of connected power sensors Example SYST COMM RDEV PMET COUN Usage Query only Manual operation See Select on page 84 SYSTem COMMunicate RDEVice PMETer p DEFine Placeholder Type Inter...

Page 220: ...ents CALibration PMETer p ZERO AUTO ONCE 220 CALCulate n PMETer p RELative MAGNitude 221 CALCulate n PMETer p RELative MAGNitude AUTO ONCE 221 CALCulate n PMETer p RELative STATe 222 FETCh PMETer p 22...

Page 221: ...x Parameters RefValue Range 200 dBm to 200 dBm RST 0 Example CALC PMET2 REL 30 Sets the reference value for relative measurements to 30 dBm for power sensor 2 Manual operation See Reference Value on p...

Page 222: ...PMETer p This command queries the results of power sensor measurements Suffix p 1 4 Power sensor index Return values Level Power level that has been measured by a power sensor The unit is either dBm a...

Page 223: ...le PMET2 DCYC STAT ON Activates the duty cycle correction PMET2 DCYC VAL 0 5 Sets the correction value to 0 5 Manual operation See Duty Cycle on page 86 SENSe PMETer p FREQuency Frequency This command...

Page 224: ...Parameters Duration SHORt NORMal LONG RST NORMal Example PMET2 MTIM SHOR Sets a short measurement duration for measurements of station ary high power signals for the selected power sensor Manual oper...

Page 225: ...ple PMET2 MTIM AVER ON Activates manual averaging Manual operation See Meas Time Average on page 85 SENSe PMETer p ROFFset STATe State This command includes or excludes the reference level offset of t...

Page 226: ...weep is complete Suffix p 1 4 Power sensor index Parameters State ON OFF 1 0 RST 0 Example PMET1 UPD ON The data from power sensor 1 is updated continuously Manual operation See Continuous Value Updat...

Page 227: ...me This command defines the time period that the input signal has to stay below the IF power trigger level before the measurement starts Suffix p 1 4 Power sensor index Parameters Time Range 0 s to 1...

Page 228: ...s Hysteresis Range 3 dB to 50 dB Increment 1 dB RST 0 dB Example PMET2 TRIG HYST 10 Sets the hysteresis of the trigger to 10 dB Manual operation See Hysteresis on page 87 SENSe PMETer p TRIGger LEVel...

Page 229: ...rator Control External generator control commands are available if the R S FSW External Genera tor Control option R S FSW B10 is installed For each measurement channel one external generator can be co...

Page 230: ...efault setting a series of frequencies is defined one for each sweep point based on the current frequency at the RF input of the R S FSW the RF frequency range covers the currently defined span of the...

Page 231: ...if the following formula is applied to the start and stop frequency of the ana lyzer Offset r Denominato Numerator RF Freq Source Parameters Value numeric value RST 1 Example SOUR EXT FREQ NUM 4 SOUR...

Page 232: ...nected external generator Parameters State ON OFF 1 0 RST 0 Manual operation See Source State on page 74 SOURce POWer LEVel IMMediate OFFSet Offset This command defines a level offset for the external...

Page 233: ...s available an error flag is displayed in the status bar RST INT Example SOUR EXT ROSC EXT Switches to external reference oscillator Manual operation See Reference on page 73 SYSTem COMMunicate GPIB R...

Page 234: ...thout TTL synchronization for all generators of other manufacturers and some Rohde Schwarz devices TTL GPIB connection with TTL synchronization if available for most Rohde Schwarz devices RST GPIB Exa...

Page 235: ...ssigned to the reference position in the grid for all traces For external generator calibration measurements requires the optional External Gen erator Control this command defines the power offset val...

Page 236: ...n generator and device input and waits for the sweep end Usage Setting only Manual operation See Calibrate Reflection Short on page 77 See Calibrate Reflection Open on page 77 SENSe CORRection METHod...

Page 237: ...Calibration Normalize on page 77 SENSe CORRection TRANsducer GENerate Name This command uses the normalized measurement data to generate a transducer factor with up to 1001 points The trace data is co...

Page 238: ...hronization to optimize measurement speed SYST COMM RDEV GEN LINK TTL Activate the use of the external reference frequency at 10 MHz on the generator SOUR EXT ROSC EXT Configuring the calibration meas...

Page 239: ...of 100 kHz TRAC DATA TRACE1 Normalizing the calibration trace results Retrieve the normalized power levels power offsets from calibration results Should be 0 for all sweep points directly after calib...

Page 240: ...anual operation See Online Demodulation Output State on page 128 OUTPut ADEMod ONLine SOURce WindowName This command selects the result display whose results are output Only active time domain results...

Page 241: ...panel PHONES connector CAUTION To protect your hearing make sure that the volume setting is not too high before putting on the headphones If you do not hear output on the connected headphones despite...

Page 242: ...SENSe FREQuency CENTer STEP command RST fmax 2 Default unit Hz Example FREQ CENT 100 MHz FREQ CENT STEP 10 MHz FREQ CENT UP Sets the center frequency to 110 MHz Manual operation See Center Frequency...

Page 243: ...SPAN Manual operation See Center Frequency Stepsize on page 95 SENSe FREQuency CENTer STEP LINK FACTor Factor This command defines a step size factor if the center frequency step size is coupled to t...

Page 244: ...turned into a normal marker Suffix n Window m Marker Example CALC MARK2 FUNC REF Sets the reference level to the level of marker 2 Usage Event CALCulate n UNIT POWer Unit UNIT n POWer Unit This comma...

Page 245: ...ut ATTenuation AUTO 246 INPut ATTenuation AUTO MODE 246 INPut EATT 246 INPut EATT AUTO 247 INPut EATT STATe 247 INPut ATTenuation Attenuation This command defines the total attenuation for RF input If...

Page 246: ...n to the reference level Manual operation See Attenuation Mode Value on page 90 INPut ATTenuation AUTO MODE OptMode Selects the priority for signal processing after the RF attenuation has been applied...

Page 247: ...quires the electronic attenuation hardware option It is not available if the optional Digital Baseband Interface is active Parameters State 1 0 ON OFF 1 ON 0 OFF RST 1 Example INP EATT AUTO OFF Manual...

Page 248: ...s defined by INPut GAIN VALue Parameters State ON OFF 1 0 RST 0 Example INP GAIN STAT ON Switches on 30 dB preamplification Manual operation See Preamplifier on page 91 INPut GAIN VALue Gain This comm...

Page 249: ...e If the y axis shows the power the unit is dB with a range from 10 dB to 200 dB If the y axis shows the frequency the unit is Hz with a variable range RST 100 dB frequency domain 500 kHz time domain...

Page 250: ...ay Defines the range per division total range 10 Value RST depends on the result display Example DISP TRAC Y PDIV 10 Sets the grid spacing to 10 units e g dB per division Manual operation See Dev per...

Page 251: ...DISP TRAC Y SPAC LIN Selects linear scaling in Manual operation See Deviation on page 122 See Scaling on page 123 11 4 6 Configuring Data Acquisition The following remote commands are required to conf...

Page 252: ...mmand defines the measurement time for analog demodulation Suffix n irrelevant Parameters Time RST 62 5us Example ADEM MTIM 62 5us Sets the measurement time to 62 5 s Manual operation See Measurement...

Page 253: ...electing IF Power the trigger threshold can be set with the TRIGger SEQuence LEVel IFPower command RST IMMediate TriggerSlope POSitive NEGative Used slope of the trigger signal The value indicated her...

Page 254: ...ant Parameters Bandwidth refer to data sheet RST 61 2 kHz Example ADEM SPEC BAND 61 2kHz Sets the resolution bandwidth to 61 2 kHz SENSe ADEMod n SRATe This command returns the sample rate set up for...

Page 255: ...e demodulation bandwidth Parameters Bandwidth refer to data sheet RST RBW AUTO is set to ON DBW 3MHz Example BAND 1 MHz Sets the resolution bandwidth to 1 MHz Manual operation See Resolution Bandwidth...

Page 256: ...in Chapter 5 4 Trigger Configuration on page 96 OPC should be used after requesting data This will hold off any subsequent changes to the selected trigger source until after the sweep is completed and...

Page 257: ...eriod Range 150 ns to 1000 s RST 150 ns Example TRIG SOUR BBP Sets the baseband power trigger source TRIG BBP HOLD 200 ns Sets the holding time to 200 ns TRIGger SEQuence DTIMe DropoutTime Defines the...

Page 258: ...OLD 200 ns Sets the holding time to 200 ns Manual operation See Trigger Holdoff on page 103 TRIGger SEQuence IFPower HYSTeresis Hysteresis This command defines the trigger hysteresis which is only ava...

Page 259: ...This command defines the power level at the third intermediate frequency that must be exceeded to cause a trigger event Note that any RF attenuation or preamplification is considered when the trigger...

Page 260: ...ggerLevel This command defines the power level the RF input must exceed to cause a trigger event Note that any RF attenuation or preamplification is considered when the trigger level is analyzed If de...

Page 261: ...The command sets the level when FM modulated signals are used as trigger source For triggering to be successful the measurement time must cover at least 5 periods of the audio signal Parameters Level...

Page 262: ...tive Example TRIG SLOP NEG Manual operation See Slope on page 103 TRIGger SEQuence SOURce Source This command selects the trigger source For triggering with AF AM AMRelative FM and PM trigger sources...

Page 263: ...the TRIGGER 3 INPUT OUTPUT connector Note Connector must be configured for Input RFPower First intermediate frequency Not available for input from the optional Digital Baseband Inter face or the optio...

Page 264: ...Digital I Q on page 100 RST IMMediate Example TRIG SOUR EXT Selects the external trigger input as source of the trigger signal Manual operation See Using the power sensor as an external trigger on pa...

Page 265: ...t serve as an input as well as an output Suffix port Selects the used trigger port 2 trigger port 2 front panel 3 trigger port 3 rear panel Parameters Direction INPut Port works as an input OUTPut Por...

Page 266: ...Sends a user defined trigger signal For more information see OUTPut TRIGger port LEVel RST DEVice Manual operation See Output Type on page 104 OUTPut TRIGger port PULSe IMMediate This command generat...

Page 267: ...F Evaluation 279 Units 279 Relative Demodulation Results 280 11 4 8 1 Basic Demodulation Settings The basic demodulation measurement parameters define how the measurement is performed Useful commands...

Page 268: ...Position PM Time Domain only on page 113 SENSe ADEMod n SQUelch STATe State This command activates the squelch function i e if the signal falls below a defined threshold see SENSe ADEMod n SQUelch LEV...

Page 269: ...in zoom area for the analog demodulated measurement data in the specified window manually If the length is defined manually using this command the zoom mode is also set to manual Suffix n Window Param...

Page 270: ...ers Time Range 0 s to measurement time zoom length RST 0 s Example ADEM ZOOM STAT ON Switches on the zoom function ADEM ZOOM STAR 500us Sets the starting point of the display to 500 s Manual operation...

Page 271: ...EMod n AF CENTer Frequency This command sets the center frequency for AF spectrum result display Suffix n irrelevant Parameters Frequency RST 1 25 MHz Manual operation See AF Center on page 114 SENSe...

Page 272: ...rt frequency to 0 kHz ADEM AF STOP 500 kHz Sets the AF stop frequency to 500 kHz Manual operation See AF Start on page 114 SENSe ADEMod n AF STOP Frequency This command sets the stop frequency for AF...

Page 273: ...ied value and the span around the center frequency of the RF data to be evaluated to its new maximum the demodulation bandwidth Suffix n irrelevant Parameters FreqRange RST 5 MHz Default unit Hz Manua...

Page 274: ...Parameters State ON OFF 1 0 RST 0 Example FILT AWE ON Activates the A weighting filter Manual operation See Weighting on page 118 SENSe FILTer n AOFF This command switches all AF filters for the sele...

Page 275: ...CCITT CCITT P 53 weighting filter for the specified evaluation For details on weighting filters see Weighting on page 118 Suffix n Window Parameters State ON OFF 1 0 RST 0 Example FILT CCIT ON Activa...

Page 276: ...nd selects the high pass filter type for the specified evaluation For details on the high pass filters refer to High Pass on page 117 Suffix n Window Parameters FilterType 20 Hz 50 Hz 300 Hz RST 300Hz...

Page 277: ...s filter Manual operation See High Pass on page 117 SENSe FILTer n LPASs FREQuency ABSolute FilterType This command selects the absolute low pass filter type for the specified evaluation For details o...

Page 278: ...Suffix n Window Parameters FilterType 5PCT 10PCT 25PCT RST 25PCT Example FILT LPAS FREQ REL 25PCT Selects the low pass filter as 25 of the demodulation band width Manual operation See Low Pass on pag...

Page 279: ...ntained for the various displays Suffix t irrelevant Parameters Value RST AM time domain 0 PCT FM time domain 0 Hz PM time domain 0 rad AM spectrum 100 PCT FM spectrum 250 kHz PM spectrum 10 rad Examp...

Page 280: ...EMod RESults PM DETector det REFerence 280 CONFigure ADEMod RESults AM DETector det STATe 281 CONFigure ADEMod RESults FM DETector det STATe 281 CONFigure ADEMod RESults PM DETector det STATe 281 CONF...

Page 281: ...elative demodulation for the selected detector If activated the demodulated result is set in relation to the reference value defined by CONFigure ADEMod RESults AM DETector det REFerence Suffix det 1...

Page 282: ...lts AM DETector det MODE Mode CONFigure ADEMod RESults FM DETector det MODE Mode CONFigure ADEMod RESults PM DETector det MODE Mode Defines the mode with which the demodulation result is determined Su...

Page 283: ...environment The tasks for manual operation are described in Chapter 5 9 Automatic Settings on page 129 MSRA MSRT operating mode In MSRA MSRT operating mode settings related to data acquisition cannot...

Page 284: ...rement length ADJ CONF LEV DUR 5ms Length of the measurement is 5 ms Manual operation See Changing the Automatic Measurement Time Meastime Manual on page 131 SENSe ADJust CONFigure DURation MODE Mode...

Page 285: ...resis on page 132 SENSe ADJust CONFigure HYSTeresis UPPer Threshold When the reference level is adjusted automatically using the SENSe ADJust LEVel on page 286 command the internal attenuators and the...

Page 286: ...sets the ideal reference level for the current input data and measurement settings This ensures that the settings of the RF attenuation and the reference level are optimally adjusted to the signal le...

Page 287: ...89 SENSe ADEMod n FM AFSPectrum TYPE 290 SENSe ADEMod n PM TDOMain TYPE 290 SENSe ADEMod n PM AFSPectrum TYPE 290 SENSe ADEMod n SPECtrum TYPE 290 SENSe AVERage n COUNt 291 SENSe AVERage n STATe t 292...

Page 288: ...y if the new value is lower than the previous one VIEW The current contents of the trace memory are frozen and dis played BLANk Hides the selected trace RST Trace 1 WRITe Trace 2 6 BLANk Example INIT...

Page 289: ...number of the currently selected trace in the window specified by the index n trace index is ignored Traces can only be queried for graphical result displays not Result Summary Marker Table or Peak Ma...

Page 290: ...trace modes are configured identically for all windows with a specific evaluation The following table indicates which command syntax refers to which evaluation method Command syntax Evaluation method...

Page 291: ...wer than the previous one VIEW The current contents of the trace memory are frozen and dis played OFF Hides the selected trace RST WRITe OFF OFF OFF OFF OFF Example ADEM AM AVER MAXH MINH OFF OFF OFF...

Page 292: ...n a particular window on and off Suffix n Window t Trace Parameters State ON OFF 1 0 SENSe AVERage n TYPE Mode This command selects the trace averaging mode Suffix n Window Parameters Mode VIDeo The l...

Page 293: ...S value AVERage Average RST APEak Example DET POS Sets the detector to positive peak Manual operation See Detector on page 135 SENSe WINDow n DETector t FUNCtion AUTO State This command couples and de...

Page 294: ...e subsequent command before the measure ment has been aborted successfully use the OPC or WAI command after ABOR and before the next command For details see the Remote Basics chapter in the R S FSW Us...

Page 295: ...n irrelevant Usage Event Manual operation See Continue Single Sweep on page 108 INITiate n CONTinuous State This command controls the sweep mode for an individual measurement channel Note that in sin...

Page 296: ...restarting the measurement You can synchronize to the end of the measurement with OPC OPC or WAI For details on synchronization see the Remote Basics chapter in the R S FSW User Manual Suffix n irrel...

Page 297: ...elf is not deactivated so you can start a new sequence immediately using INITiate n SEQuencer IMMediate on page 297 To deactivate the Sequencer use SYSTem SEQuencer on page 299 Suffix n irrelevant Usa...

Page 298: ...el s sweep mode considering each channels sweep count until all measurements in all active channels have been per formed CONTinuous The measurements in each active channel are performed one after the...

Page 299: ...d in the Operating Modes chapter in the R S FSW User Manual Parameters State ON OFF 0 1 ON 1 The Sequencer is activated and a sequential measurement is started immediately OFF 0 The Sequencer is deact...

Page 300: ...Play WINDow n SIZE Size This command maximizes the size of the selected result display window temporarily To change the size of several windows on the screen permanently use the LAY SPL command see LA...

Page 301: ...always used as a query so that you immediately obtain the name of the new window as a result To replace an existing window use the LAYout REPLace WINDow command Parameters WindowName String containin...

Page 302: ...ist Marker peak list RSUMmary Result summary XTIM AM RF Time Domain RF power XTIM AM RELative AM Time Domain XTIM AM RELative AFSPec trum AM Spectrum XTIM FM FM Time Domain XTIM FM AFSPectrum FM Spect...

Page 303: ...f the window Example LAY WIND IDEN 2 Queries the index of the result display named 2 Response 2 Usage Query only LAYout REMove WINDow WindowName This command removes a window from the display in the a...

Page 304: ...ut SPLitter Index1 Index2 Position This command changes the position of a splitter and thus controls the size of the win dows on each side of the splitter Compared to the DISPlay WINDow n SIZE on page...

Page 305: ...cy Sweep and 3 Marker Peak List towards the top 70 of the screen The following commands have the exact same effect as any combination of windows above and below the splitter moves the splitter vertica...

Page 306: ...e the name of the window is its index Example LAY WIND2 IDEN Queries the name of the result display in window 2 Response 2 Usage Query only LAYout WINDow n REMove This command removes the window speci...

Page 307: ...e same evaluation are configured identically Specific commands Retrieving Trace Results 307 Exporting Trace Results 310 Retrieving Result Summary Values 312 Formats for Returned Values ASCII Format an...

Page 308: ...sults Command syntax Evaluation method Output unit AM ABSolute TDOMain RF time domain dBm AM RELative TDOMain AM time domain AM RELative AFSPectrum AM spectrum FM TDOMain FM time domain kHz FM AFSPect...

Page 309: ...ion the format setting REAL is used for the binary transmission of trace data For I Q data 8 bytes per sample are returned for this format set ting RST ASCII Example FORM REAL 32 TRACe n DATA This com...

Page 310: ...l error can occur although the hard disk indicates that storage space is still available To store data permanently select an external storage location such as a USB memory device For details see Prote...

Page 311: ...from the selected traces and tables is exported See Chapter 11 7 5 Reference ASCII File Export Format on page 317 for details Parameters State ON OFF 0 1 RST 1 Manual operation See Include Instrument...

Page 312: ...CALCulate n MARKer m FUNCtion ADEMod FERRor RESult t 314 CALCulate n MARKer m FUNCtion ADEMod SINad RESult t 314 CALCulate n MARKer m FUNCtion ADEMod THD RESult t 315 SENSe ADEMod n FM OFFSet 315 CALC...

Page 313: ...page 21 CALCulate n MARKer m FUNCtion ADEMod AM RESult t RELative MeasType CALCulate n MARKer m FUNCtion ADEMod FM RESult t RELative MeasType CALCulate n MARKer m FUNCtion ADEMod PM RESult t RELative...

Page 314: ...FERRor RESult t This command queries the carrier offset frequency error for FM and PM demodula tion The carrier offset is determined from the current measurement data CLR WRITE The modulation is remo...

Page 315: ...lated signal in dB Usage Query only SENSe ADEMod n FM OFFSet ResultType This command calculates the FM carrier offset from the currently available measure ment data set If averaging has been activated...

Page 316: ...measurement and waits for sync ADEM FM OFFS IMM Reads FM offset of last measurement of the sequence of 30 ADEM FM OFFS AVER Reads FM offset averaged over 30 measurements Usage Query only 11 7 4 Format...

Page 317: ...ment which are also separated by a sem icolon The results are output in the same order as they are displayed on the screen window by window trace by trace and table row by table row Generally the form...

Page 318: ...alues Hz with span 0 s with span 0 dBm dB with statistics measurements y Unit dBm Unit of y values dB V A W depending on the selected unit with y axis LOG or with y axis LIN Data section for individua...

Page 319: ...can be acti vated for each window simultaneously More details are described for manual operation in Chapter 6 3 4 Marker Function Configuration on page 146 Setting Up Individual Markers 319 General M...

Page 320: ...r m2 If you change the horizontal position of marker m2 marker m1 changes its hori zontal position to the same value Suffix n Window m Marker Parameters State ON OFF 1 0 RST 0 Example CALC MARK4 LINK...

Page 321: ...ace 2 Manual operation See Assigning the Marker to a Trace on page 141 CALCulate n MARKer m X Position This command moves a marker to a particular coordinate on the x axis If necessary the command act...

Page 322: ...n R S FSW K7 is activated the query result is output in the following units in the specified window Result display Output unit AM FM Hz PM rad deg defined with UNIT n ANGLe on page 279 RF dB Range Log...

Page 323: ...ker m LINK TO MARKer m State This command links delta marker m1 to any active normal marker m2 If you change the horizontal position of marker m2 delta marker m1 changes its horizontal position to the...

Page 324: ...her than marker 1 The reference may be another marker or the fixed reference Suffix n Window m Marker Parameters Reference 1 to 16 Selects markers 1 to 16 as the reference FIXed Selects the fixed refe...

Page 325: ...a marker 2 on trace 2 CALCulate n DELTamarker m X Position This command moves a delta marker to a particular coordinate on the x axis If necessary the command activates the delta marker and positions...

Page 326: ...the y axis If necessary the command activates the delta marker first To get a valid result you have to perform a complete measurement with synchroniza tion to the end of the measurement before reading...

Page 327: ...LINK 327 DISPlay MINFo STAT 328 DISPlay MTABle 328 CALCulate n MARKer m X SSIZe StepSize This command selects the marker step size mode for all markers in all windows The step size defines the distanc...

Page 328: ...r on page 142 DISPlay MINFo STAT DisplayMode This command turns the marker information in all diagrams on and off Parameters DisplayMode ON 1 Displays the marker information in the diagrams OFF 0 Hide...

Page 329: ...trogram FRAMe 330 CALCulate n MARKer m SGRam SARea 330 CALCulate n MARKer m SPECtrogram SARea 330 CALCulate n MARKer m SGRam XY MAXimum PEAK 330 CALCulate n MARKer m SPECtrogram XY MAXimum PEAK 330 CA...

Page 330: ...marker on the 20th frame before the present CALC MARK2 SGR FRAM 2s Sets second marker on the frame 2 seconds ago CALCulate n MARKer m SGRam SARea SearchArea CALCulate n MARKer m SPECtrogram SARea Sea...

Page 331: ...It does not change the horizontal position of the marker Suffix n Window m Marker Usage Event CALCulate n MARKer m SGRam Y MAXimum BELow CALCulate n MARKer m SPECtrogram Y MAXimum BELow This command m...

Page 332: ...ALCulate n MARKer m SGRam Y MINimum ABOVe CALCulate n MARKer m SPECtrogram Y MINimum ABOVe This command moves a marker vertically to the next higher minimum level for the cur rent frequency The search...

Page 333: ...position of the marker If the marker hasn t been active yet the command first looks for the peak level for all frequencies and moves the marker vertically to the minimum level Suffix n Window m Marker...

Page 334: ...e n DELTamarker m SGRam Y MINimum ABOVe 337 CALCulate n DELTamarker m SPECtrogram Y MINimum ABOVe 337 CALCulate n DELTamarker m SGRam Y MINimum BELow 337 CALCulate n DELTamarker m SPECtrogram Y MINimu...

Page 335: ...te n DELTamarker m SGRam XY MAXimum PEAK CALCulate n DELTamarker m SPECtrogram XY MAXimum PEAK This command moves a marker to the highest level of the spectrogram over all fre quencies Suffix n Window...

Page 336: ...AXimum NEXT CALCulate n DELTamarker m SPECtrogram Y MAXimum NEXT This command moves a delta marker vertically to the next higher level for the current frequency The search includes all frames It does...

Page 337: ...mum level for the cur rent frequency The search includes only frames below the current marker position It does not change the horizontal position of the marker Suffix n Window m Marker Usage Event CAL...

Page 338: ...for all markers in all windows The peak excursion sets the requirements for a peak to be detected during a peak search The unit depends on the measurement Application Result display Unit Spectrum dB...

Page 339: ...um LEFT 340 CALCulate n MARKer m MINimum NEXT 340 CALCulate n MARKer m MINimum PEAK 341 CALCulate n MARKer m MINimum RIGHt 341 CALCulate n MARKer m MAXimum LEFT This command moves a marker to the next...

Page 340: ...n Suffix n Window m Marker Usage Event Manual operation See Search Next Peak on page 144 CALCulate n MARKer m MINimum LEFT This command moves a marker to the next minimum value The search includes onl...

Page 341: ...Usage Event Manual operation See Search Next Minimum on page 145 Positioning Delta Markers The following commands position delta markers on the trace CALCulate n DELTamarker m MAXimum LEFT 341 CALCul...

Page 342: ...t yet active the command first activates the marker Suffix n Window m Marker Usage Event Manual operation See Peak Search on page 144 CALCulate n DELTamarker m MAXimum RIGHt This command moves a delta...

Page 343: ...level If the marker is not yet active the command first activates the marker Suffix n Window m Marker Usage Event Manual operation See Search Minimum on page 145 CALCulate n DELTamarker m MINimum RIGH...

Page 344: ...d reference marker to the peak power Suffix n Window m Marker Example CALC DELT FUNC FIX RPO MAX Sets the reference point level for delta markers to the peak of the selected trace Usage Event Manual o...

Page 345: ...al operation See Defining a Fixed Reference on page 142 CALCulate n DELTamarker m FUNCtion FIXed RPOint Y OFFSet Offset This command defines a level offset for the fixed delta marker reference point S...

Page 346: ...RKer m FUNCtion FPEaks ANNotation LABel STATe 346 CALCulate n MARKer m FUNCtion FPEaks COUNt 347 CALCulate n MARKer m FUNCtion FPEaks IMMediate 347 CALCulate n MARKer m FUNCtion FPEaks LIST SIZE 347 C...

Page 347: ...ks IMMediate Peaks This command initiates a peak search Suffix n Window m Marker Parameters Peaks This parameter defines the number of peaks to find during the search Note that the actual number of pe...

Page 348: ...Window m Marker Parameters SortMode X Sorts the peaks according to increasing position on the x axis Y Sorts the peaks according to decreasing position on the y axis RST X Example CALC MARK FUNC FPE...

Page 349: ...depends on the measurement Usage Query only MMEMory STORe n LIST FileName This command exports the SEM and spurious emission list evaluation to a file The file format is dat Secure User Mode In secur...

Page 350: ...e R S FSW User Manual Suffix n Window Parameters FileName String containing the path name and extension of the target file Example MMEM STOR PEAK test dat Saves the current marker peak list in the fil...

Page 351: ...lt you have to perform a complete measurement with synchroniza tion to the end of the measurement before reading out the result This is only possible for single sweep mode See also INITiate n CONTinuo...

Page 352: ...also INITiate n CONTinuous on page 295 Suffix n m irrelevant Return values Distance The result depends on the span In case of frequency domain measurements the command returns the bandwidth between t...

Page 353: ...bsolute position in time of the n dB marker to the left of the ref erence marker in seconds TimeX2 absolute position in time of the n dB marker to the right of the reference marker in seconds Example...

Page 354: ...meric value The difference between the measured carrier power and the noise power at the position of the specified normal marker Example CALC MARK2 FUNC PNO RES Outputs the result of phase noise measu...

Page 355: ...n LIMit k LOWer STATe 359 CALCulate n LIMit k LOWer THReshold 360 CALCulate n LIMit k NAME 360 CALCulate n LIMit k UNIT 360 CALCulate n LIMit k UPPer DATA 361 CALCulate n LIMit k UPPer MARGin 361 CAL...

Page 356: ...he domain of the limit line Suffix n irrelevant k Limit line Parameters SpanSetting FREQuency TIME RST FREQuency Manual operation See X Axis on page 159 CALCulate n LIMit k CONTrol MODE Mode This comm...

Page 357: ...ts by the value you define Suffix n irrelevant k Limit line Parameters Distance Numeric value The unit depends on the scale of the x axis Manual operation See Shift x on page 160 CALCulate n LIMit k C...

Page 358: ...MARGin Margin This command defines an area around a lower limit line where limit check violations are still tolerated Suffix n irrelevant k Limit line Parameters Margin numeric value RST 0 Default un...

Page 359: ...ally changes the limit line definition points by the value you define Suffix n Window k Limit line Parameters Distance Defines the distance that the limit line moves The unit depends on CALCulate n LI...

Page 360: ...es the threshold for the limit check if the limit line violates the thresh old Suffix n irrelevant k Limit line Parameters Threshold Numeric value The unit depends on CALCulate n LIMit k UNIT on page...

Page 361: ...s Note that the number of vertical values has to be the same as the number of horizontal values set with CALCulate n LIMit k CONTrol DATA If not the R S FSW either adds missing values or ignores surpl...

Page 362: ...to shifting the limit line an offset does not actually change the limit line defi nition points Suffix n irrelevant k Limit line Parameters Offset Numeric value RST 0 Default unit dB Manual operation...

Page 363: ...pper limit line on and off Before you can use the command you have to select a limit line with CALCulate n LIMit k NAME on page 360 Suffix n irrelevant k Limit line Parameters State ON OFF 1 0 RST 0 M...

Page 364: ...ulate n LIMit k TRACe t CHECk 365 MMEMory LOAD n LIMit 366 MMEMory STORe n LIMit 366 CALCulate n LIMit k ACTive This command queries the names of all active limit lines Suffix n k irrelevant Return va...

Page 365: ...it k FAIL Note that a new command exists to activate the limit check and define the trace to be checked in one step see CALCulate n LIMit k TRACe t CHECk on page 365 Suffix n irrelevant k Limit line P...

Page 366: ...e of the CSV import file Example MMEM LOAD LIM C TEST CSV Manual operation See Import on page 160 MMEMory STORe n LIMit FileName LimitLineName This command exports limit line data to an ASCII CSV file...

Page 367: ...t before reading out the result This is only possible for single sweep mode See also INITiate n CONTinuous on page 295 Suffix n Window k Limit line Return values Result 0 PASS 1 FAIL Example INIT WAI...

Page 368: ...imit line 1 by 10 dB CALC LIM1 UPP OFFS 3dB Defines an additional 3 dB offset for limit line 1 CALC LIM3 NAME FM3 Names limit line 3 FM3 CALC LIM3 LOW MODE REL Selects a relative vertical scale for li...

Page 369: ...COUN 10 Defines 10 sweeps to be performed in each measurement DISP TRAC1 Y RLEV 0dBm Sets the reference level to 0 dBm TRIG SOUR IFP TRIG LEV IFP 10dBm Defines triggering when the second intermediate...

Page 370: ...og Demodulation slave application the commands to define the analysis interval are the same as those used to define the actual data acquisition see Chap ter 11 4 6 Configuring Data Acquisition on page...

Page 371: ...Position of the analysis line in seconds The position must lie within the measurement time of the MSRA measurement Default unit s Manual operation See Position on page 161 CALCulate n MSRA WINDow n IV...

Page 372: ...Chap ter 11 4 6 Configuring Data Acquisition on page 251 Be sure to select the correct measurement channel before executing these commands In addition a capture offset can be defined i e an offset fro...

Page 373: ...fied by the WINDow suffix n the CALC suffix is irrelevant This command is only available in application measurement channels not the MSRT View or MSRT Master Suffix n Window Return values IntStart Sta...

Page 374: ...STORe n IQ COMMent 374 MMEMory STORe IQ FORMat 374 MMEMory STORe n IQ STATe 375 MMEMory LOAD IQ STATe 1 FileName This command restores I Q data from a file Parameters FileName String containing the p...

Page 375: ...y full error can occur although the hard disk indicates that storage space is still available To store data permanently select an external storage location such as a USB memory device For details see...

Page 376: ...mple INST SEL ADEM Activates analog demodulator CALC FEED XTIM FM Selects the display of the FM signal Table 11 7 Evaluation parameter values for the AnalogDemod application Parameter Evaluation XTIM...

Page 377: ...EM MTIM 1ms Set the measurement time to 1 ms 10 periods SENS ADJ SCAL Y AUTO ON Optimize the scaling of the y axis for the current measurement continuously BAND DEM 400 kHz Set the demodulation bandwi...

Page 378: ...nal from the FM Spectrum Result 66 413 dB CALC MARK FUNC ADEM FERR Queries the FM carrier offset frequency error for the most recent measurement trace 1 Result 649 07 Hz ADEM FM OFFS AVER Queries FM c...

Page 379: ...ared with the following standard settings AM Broadcast FM Narrowband FM Broadcast Frequency Settling None default settings The default storage location for the settings files is C R_S INSTR USER user...

Page 380: ...d band width 100 kHz 100 kHz 400 kHz 5 MHz 5 MHz Aquisition time 100 ms 100 ms 100 ms 10 ms 62 5 s Input coupling AC AC AC AC Squelch level 30 dBm 20 dBm Windows RF Spectrum AM Time Domain AM Spectrum...

Page 381: ...s possible to read the I Q data directly within the archive without the need to unpack untar the tar file first Sample iq tar files If you have the optional R S FSW VSA application R S FSW K70 some sa...

Page 382: ...Location RsIqTar xsd xmlns xsi http www w3 org 2001 XMLSchema instance Name R S FSW Name Comment Here is a comment Comment DateTime 2011 01 24T14 02 49 DateTime Samples 68751 Samples Clock unit Hz 6 5...

Page 383: ...8 8 bit signed integer data int16 16 bit signed integer data int32 32 bit signed integer data float32 32 bit floating point data IEEE 754 float64 64 bit floating point data IEEE 754 ScalingFactor Opti...

Page 384: ...web browsers that have JavaScript enabled and if the XSLT stylesheet open_IqTar_xml_file_in_web_browser xslt is available Example ScalingFactor Data stored as int16 and a desired full scale voltage of...

Page 385: ...ved pairs of I and Q values and multi channel signals contain interleaved complex sam ples for channel 0 channel 1 channel 2 etc If the NumberOfChannels element is not defined one channel is presumed...

Page 386: ...ple 1 I 2 1 Q 2 1 Channel 2 Complex sample 1 I 0 2 Q 0 2 Channel 0 Complex sample 2 I 1 2 Q 1 2 Channel 1 Complex sample 2 I 2 2 Q 2 2 Channel 2 Complex sample 2 Example Element order for complex cart...

Page 387: ...ENSe ADEMod n FM TDOMain TYPE 289 SENSe ADEMod n MTIMe 252 SENSe ADEMod n PM AFSPectrum RESult 308 SENSe ADEMod n PM AFSPectrum TYPE 290 SENSe ADEMod n PM RPOint X 268 SENSe ADEMod n PM TDOMain RESult...

Page 388: ...Se CORRection CVL PORTs 202 SENSe CORRection CVL SELect 202 SENSe CORRection CVL SNUMber 202 SENSe CORRection METHod 236 SENSe CORRection RECall 236 SENSe CORRection TRANsducer GENerate 237 SENSe CORR...

Page 389: ...e PMETer p FREQuency LINK 223 SENSe PMETer p MTIMe 224 SENSe PMETer p MTIMe AVERage COUNt 224 SENSe PMETer p MTIMe AVERage STATe 225 SENSe PMETer p ROFFset STATe 225 SENSe PMETer p TRIGger DTIMe 227 S...

Page 390: ...LCulate n DELTamarker m SGRam Y MINimum ABOVe 337 CALCulate n DELTamarker m SGRam Y MINimum BELow 337 CALCulate n DELTamarker m SGRam Y MINimum NEXT 337 CALCulate n DELTamarker m SGRam Y MINimum PEAK...

Page 391: ...OFF 320 CALCulate n MARKer m FUNCtion ADEMod AFRequency RESult 312 CALCulate n MARKer m FUNCtion ADEMod AM RESult t RELative 313 CALCulate n MARKer m FUNCtion ADEMod AM RESult t 312 CALCulate n MARKer...

Page 392: ...r m SGRam Y MAXimum NEXT 331 CALCulate n MARKer m SGRam Y MAXimum PEAK 332 CALCulate n MARKer m SGRam Y MINimum ABOVe 332 CALCulate n MARKer m SGRam Y MINimum BELow 332 CALCulate n MARKer m SGRam Y MI...

Page 393: ...ctor det REFerence MEAStoref 282 CONFigure ADEMod RESults PM DETector det STATe 281 CONFigure ADEMod RESults UNIT 282 DIAGnostic SERVice NSOurce 240 DISPlay FORMat 300 DISPlay MINFo STAT 328 DISPlay M...

Page 394: ...INPut EATT STATe 247 INPut FILTer HPASs STATe 190 INPut FILTer YIG STATe 190 INPut GAIN STATe 248 INPut GAIN VALue 248 INPut IMPedance 191 INPut IQ BALanced STATe 210 INPut IQ FULLscale AUTO 210 INPut...

Page 395: ...Tem COMMunicate GPIB RDEVice GENerator ADDRess 233 SYSTem COMMunicate RDEVice GENerator INTerface 233 SYSTem COMMunicate RDEVice GENerator LINK 234 SYSTem COMMunicate RDEVice GENerator TYPE 234 SYSTem...

Page 396: ...TRIGger SEQuence LEVel IFPower 259 TRIGger SEQuence LEVel IQPower 259 TRIGger SEQuence LEVel PM 261 TRIGger SEQuence LEVel RFPower 260 TRIGger SEQuence LEVel EXTernal port 259 TRIGger SEQuence OSCill...

Page 397: ...nd B71 Full scale level 94 I Q mode 68 Input type remote control 211 Analog Baseband connector RF input 31 Analog Baseband Interface B71 Amplitude settings 92 Input settings 68 Analog Demodulation Mea...

Page 398: ...tion 130 Displayed 11 12 Softkey 95 115 Step size 95 Channel bar Information external generator 43 Closing Channels remote 184 Windows remote 303 306 Comment Limit lines 158 Compatibility Limit lines...

Page 399: ...Configuration 51 VSA measurements 51 Direct path Input configuration 54 Remote 190 Display configuration Softkey 109 Drop out time Trigger 102 Trigger Power sensor 87 Duplicating Measurement channel...

Page 400: ...nsor 85 Deemphasis filter 119 Deviation 26 Deviation scaling 120 External generator 75 Power sensor 85 Remote control 242 Settings 95 Span 115 Frequency coupling Automatic external generator 41 Extern...

Page 401: ...ettings 52 91 Signal parameters 30 Source Configuration softkey 52 Source Radio frequency RF 53 Input sample rate ISR Digital I Q 66 Input sources 52 Analog Baseband 68 Digital I Q 66 Inserting Limit...

Page 402: ...300 Measurement accuracy External generator 38 Measurement channel Creating remote 183 184 Deleting remote 184 Duplicating remote 183 Querying remote 184 Renaming remote 186 Replacing remote 184 Measu...

Page 403: ...nce marker 142 Peaks Marker positioning 144 Next 144 Softkey 144 Performance Improving 28 Performing Analog Demodulation measurement 167 Phase Deviation 26 Deviation scaling 120 Unit 124 Phase noise m...

Page 404: ...values 181 Capitalization 179 Character data 182 Data blocks 182 Deprecated 375 Numeric values 180 Optional keywords 179 Parameters 180 Strings 182 Suffixes 179 Res BW see RBW 107 Resetting RF input...

Page 405: ...Trigger Power sensor 87 Softkey Calibrate Reflection Open remote control 236 Calibrate Reflection Short remote control 236 Calibrate Transmission remote control 236 Normalize remote control 237 Softk...

Page 406: ...shold Limit lines 158 Time domain zoom 29 112 Length 112 Start 112 State 112 Time per division 112 Time per division Displayed 12 Time domain zoom 112 Time trigger Softkey 100 Total harmonic distortio...

Page 407: ...play 108 Result display remote 296 Upper Level Hysteresis 131 V View filter Limit lines 156 Visible Limit lines 156 Volume Remote control 241 W Weighting filter AF filters 118 White papers 7 Window ti...

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