Rohde & Schwarz FSW Series User Manual
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Rohde & Schwarz FSW Series User Manual

Analog demodulation measurement option
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R&S
FSW-K7
Analog Demodulation Measurement
Option
User Manual
(;×êX2)
1173.9240.02 ─ 17

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  • Page 1 ® R&S FSW-K7 Analog Demodulation Measurement Option User Manual (;×êX2) 1173.9240.02 ─ 17...
  • Page 2 ® This manual applies to the following R&S FSW models with firmware version 2.00 and higher: ● ® R&S FSW8 (1312.8000K08) ● R&S ® FSW13 (1312.8000K13) ● ® R&S FSW26 (1312.8000K26) ● ® R&S FSW43 (1312.8000K43) ● R&S ® FSW50 (1312.8000K50) ●...

  • Page 3: Table Of Contents

    ® Contents R&S FSW-K7 Contents 1 Preface....................7 About this Manual......................7 Documentation Overview..................... 8 Conventions Used in the Documentation..............9 2 Welcome to the Analog Demodulation Application......11 Starting the Analog Demodulation Application............11 Understanding the Display Information..............12 3 Measurements and Result Displays...........15 4 Measurement Basics................
  • Page 4 ® Contents R&S FSW-K7 Trace / Data Export Configuration................133 Marker Settings......................134 Marker Search Settings and Positioning Functions..........139 Marker Function Configuration................142 Marker Peak List Configuration................145 Limit Line Settings and Functions................147 Zoom Functions......................153 Analysis in MSRA/MSRT Mode................154 7 I/Q Data Import and Export..............156 Import/Export Functions..................
  • Page 5 ® Contents R&S FSW-K7 Index....................361 User Manual 1173.9240.02 ─ 17...
  • Page 6 ® Contents R&S FSW-K7 User Manual 1173.9240.02 ─ 17...

  • Page 7: Preface

    ® Preface R&S FSW-K7 About this Manual 1 Preface 1.1 About this Manual This Analog Demodulation User Manual provides all the information specific to the application. All general instrument functions and settings common to all applications and operating modes are described in the main R&S FSW User Manual. The main focus in this manual is on the measurement results and the tasks required to obtain them.

  • Page 8: Documentation Overview

    ® Preface R&S FSW-K7 Documentation Overview 1.2 Documentation Overview The user documentation for the R&S FSW consists of the following parts: ● Printed Getting Started manual ● Online Help system on the instrument ● Documentation CD-ROM with: – Getting Started –...

  • Page 9: Conventions Used In The Documentation

    ® Preface R&S FSW-K7 Conventions Used in the Documentation In the individual application manuals, the specific instrument functions of the applica- tion are described in detail. For additional information on default settings and parame- ters, refer to the data sheets. Basic information on operating the R&S FSW is not inclu- ded in the application manuals.
  • Page 10 ® Preface R&S FSW-K7 Conventions Used in the Documentation 1.3.2 Conventions for Procedure Descriptions When describing how to operate the instrument, several alternative methods may be available to perform the same task. In this case, the procedure using the touchscreen is described.

  • Page 11: Welcome To The Analog Demodulation Application

    ® Welcome to the Analog Demodulation Application R&S FSW-K7 Starting the Analog Demodulation Application 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.

  • Page 12: Understanding The Display Information

    ® Welcome to the Analog Demodulation Application R&S FSW-K7 Understanding the Display Information A dialog box opens that contains all operating modes and applications currently available on your R&S FSW. 2. Select the "Analog Demodulation" item. The R&S FSW opens a new measurement channel for the Analog Demodulation application.
  • Page 13 ® Welcome to the Analog Demodulation Application R&S FSW-K7 Understanding the Display Information = Channel bar for firmware and measurement settings 2+3 = Window title bar with diagram-specific (trace) information = Diagram area = Diagram footer with diagram-specific information, depending on result display = Instrument status bar with error messages, progress bar and date/time display MSRA/MSRT operating mode In MSRA/MSRT operating mode, additional tabs and elements are available.
  • Page 14 ® Welcome to the Analog Demodulation Application R&S FSW-K7 Understanding the Display Information Window title bar information For each diagram, the header provides the following information: Fig. 2-1: Window title bar information in the Analog Demodulation application 1 = Window number 2 = Modulation type 3 = Trace color 4 = Trace number...

  • Page 15: Measurements And Result Displays

    ® Measurements and Result Displays R&S FSW-K7 3 Measurements and Result Displays The data that was measured by the R&S FSW can be evaluated using various different methods. In the Analog Demodulation application, up to six evaluation methods can be displayed simultaneously in separate windows.

  • Page 16: Fm Time Domain

    ® Measurements and Result Displays R&S FSW-K7 Remote command: LAY:ADD? '1',RIGH,'XTIM:AM:REL' (See on page 284) LAYout:​ A DD[:​ W INDow]?​ FM Time Domain Displays the frequency spectrum of the demodulated FM signal versus time. User Manual 1173.9240.02 ─ 17...

  • Page 17: Pm Time Domain

    ® Measurements and Result Displays R&S FSW-K7 Remote command: LAY:ADD? '1',RIGH,'XTIM:FM' (See on page 284) LAYout:​ A DD[:​ W INDow]?​ PM Time Domain Displays the phase deviations of the demodulated PM signal (in rad or °) versus time. User Manual 1173.9240.02 ─ 17...

  • Page 18: Am Spectrum

    ® Measurements and Result Displays R&S FSW-K7 Remote command: LAY:ADD? '1',RIGH,'XTIM:PM' (See on page 284) LAYout:​ A DD[:​ W INDow]?​ AM Spectrum Displays the modulation depth of the demodulated AM signal (in % or dB) versus AF span. The spectrum is calculated from the demodulated AM signal in the time domain via FFT.

  • Page 19: Fm Spectrum

    ® Measurements and Result Displays R&S FSW-K7 Remote command: LAY:ADD? '1',RIGH,'XTIMe:AM:REL:AFSPectrum1' (see on page 284) LAYout:​ A DD[:​ W INDow]?​ FM Spectrum Displays the frequency deviations of the demodulated FM signal (in Hz or dB) versus AF span. The spectrum is calculated from the demodulated AM signal in the time domain via FFT.

  • Page 20: Pm Spectrum

    ® Measurements and Result Displays R&S FSW-K7 Remote command: LAY:ADD? '1',RIGH,'XTIMe:FM:AFSPectrum1' (see on page 284) LAYout:​ A DD[:​ W INDow]?​ PM Spectrum Displays the phase deviations of the demodulated PM signal (in rad, ° or dB) versus AF span. The spectrum is calculated from the demodulated AM signal in the time domain via FFT.

  • Page 21: Rf Time Domain

    ® Measurements and Result Displays R&S FSW-K7 Remote command: LAY:ADD? '1',RIGH,'XTIMe:PM:AFSPectrum1' (see on page 284) LAYout:​ A DD[:​ W INDow]?​ RF Time Domain Displays the RF power of the input signal versus time. The level values represent the magnitude of the I/Q data set. User Manual 1173.9240.02 ─...

  • Page 22: Rf Spectrum

    ® Measurements and Result Displays R&S FSW-K7 Remote command: LAY:ADD? '1',RIGH,'XTIM:AM' (see on page 284) LAYout:​ A DD[:​ W INDow]?​ RF Spectrum Displays the spectrum of the input signal. In contrast to the Spectrum application, the frequency values are determined using FFT from the recorded I/Q data set. User Manual 1173.9240.02 ─...

  • Page 23: Result Summary

    ® Measurements and Result Displays R&S FSW-K7 Remote command: LAY:ADD? '1',RIGH,'XTIM:SPECTRUM' (see on page 284) LAYout:​ A DD[:​ W INDow]?​ 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 description Label Description...

  • Page 24: Marker Table

    ® Measurements and Result Displays R&S FSW-K7 Label Description SINAD Signal-to-noise-and-distortion (Calculated only if AF Spectrum is displayed) Measures the ratio of the total power to the power of noise and harmonic distortions. The noise and harmonic power is calculated inside the AF spectrum span. The DC offset is removed before the calculation.

  • Page 25: Marker Peak List

    ® Measurements and Result Displays R&S FSW-K7 Marker Peak List The marker peak list determines the frequencies and levels of peaks in the spectrum or time domain. How many peaks are displayed can be defined, as well as the sort order. In addition, the detected peaks can be indicated in the diagram.

  • Page 26: Measurement Basics

    ® Measurement Basics R&S FSW-K7 Demodulation Process - Circuit Description 4 Measurement Basics Some background knowledge on basic terms and principles used in Analog Demodula- tion measurements is provided here for a better understanding of the required configu- ration settings. ●...
  • Page 27 ® Measurement Basics R&S FSW-K7 Demodulation Process - Circuit Description Fig. 4-1: Block diagram of software demodulator User Manual 1173.9240.02 ─ 17...

  • Page 28: Demodulation Bandwidth

    ® Measurement Basics R&S FSW-K7 Demodulation Bandwidth The AM DC, FM DC and PM DC raw data of the demodulators is fed into the "Trace Arithmetic" block that combines consecutive data sets. Possible trace modes are: Clear Write, Max Hold, Min Hold and Average. The output data of the "Trace Arith- metic"...

  • Page 29: Sample Rate, Measurement Time And Trigger Offset

    ® Measurement Basics R&S FSW-K7 Sample Rate, Measurement Time and Trigger Offset 4.3 Sample Rate, Measurement Time and Trigger Offset The maximum demodulation bandwidths that can be obtained during the measure- ment, depending on the sample rate, are listed in the tables below for different demod- ulation filter types.
  • Page 30 ® Measurement Basics R&S FSW-K7 Sample Rate, Measurement Time and Trigger Offset Demod. band- Sample rate Measurement time Trigger offset width Min. Max. Min. Max. 256 µs 3.2 kHz 3.90625 kHz 6144 s -6144 s 53687.0912 s 512 µs 1.6 kHz 1.953125 kHz 12288 s -12288 s...

  • Page 31: Af Triggers

    ® Measurement Basics R&S FSW-K7 AF Triggers Demod. band- Sample rate Measurement time Trigger offset width Min. Max. Min. Max. 50 kHz 200 kHz 5 us 120 s -120 s 1048.575995 s 25 kHz 100 kHz 10 us 240 s -240 s 2097.15199 s 12.5 kHz...

  • Page 32: Af Filters

    ® Measurement Basics R&S FSW-K7 AF Filters Triggering is always DC-coupled. Therefore triggering is possible directly to the point where a specific carrier level, phase or frequency is exceeded or not attained. 4.5 AF Filters Additional filters applied after demodulation help filter out unwanted signals, or correct pre-emphasized input signals.
  • Page 33 ® Measurement Basics R&S FSW-K7 Time Domain Zoom Fig. 4-3: FM time domain measurement with time domain zoom The time domain zoom area affects not only the diagram display, but the entire evalua- tion for the current window. In contrast to the time domain zoom, the graphical zoom is available for all diagram evaluations.

  • Page 34: Receiving Data Input And Providing Data Output

    ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output Time domain zoom Graphical zoom 4.7 Receiving Data Input and Providing Data Output The R&S FSW can analyze signals from different input sources and provide various types 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.
  • Page 35 ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output source to this connector in the RF input configuration (see "Input Connector" on page 58). The probe's attenuation is compensated automatically by the R&S FSW using a trans- ducer named "Probe on Baseband Input I".

  • Page 36: External Generator Connections

    ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output input path can also be analyzed in the Spectrum application of the R&S FSW base unit. Then you can perform RF measurements (measurements in the time or frequency domain) on the input from a probe.
  • Page 37 ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output TTL synchronization In addition, TTL synchronization can be used with some Rohde & Schwarz generators connected via GPIB. The TTL interface is included in the AUX CONTROL connector of the R&S FSW-B10 option.

  • Page 38: Overview Of Generators Supported By The R&S Fsw-B10 Option

    ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output Reflection Measurement Scalar reflection measurements can be carried out using a reflection-coefficient mea- surement bridge. Fig. 4-6: Test setup for reflection measurement Generated signal input In order to use the functions of the external generator, an appropriate generator must be connected and configured correctly.
  • Page 39 ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output Generator type TTL support Generator type TTL support SMA100A3 SMP04 SMA100A6 SMP22 SMB100A1 SMR20 SMB100A12 SMR20B11 SMB100A2 SMR27 SMB100A20 SMR27B11 SMB100A3 SMR30 SMB100A40 SMR30B11 SMBV100A3 SMR40 SMBV100A6 SMR40B11 SMC100A1 SMR50 SMC100A3...

  • Page 40: Generator Setup Files

    ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output Generator type TTL support Generator type TTL support SMIQ03E SMY02 SMIQ04B HP8254A SMIQ06B HP8257D SMJ03 HP8340A SMJ06 HP8648 SML01 HP ESG-A Series 1000A, 2000A, 3000A, 4000A SML02 HP ESG B Sereies SML03 HP ESG-D SERIES E4432B 1) Requires firmware version V2.10.x or higher...

  • Page 41: Normalization

    ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output on page 43). The signal generator then sends a signal with the specified level at each frequency in the predefined list. The R&S FSW measures the signal and deter- mines the level offsets to the expected values.

  • Page 42: Reference Trace, Reference Line And Reference Level

    ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output right border of the reference dataset are extrapolated to the current start or stop fre- quency, i.e. the reference dataset is extended by constant values. Thus, the instrument settings can be changed in a wide area without giving up normali- zation.

  • Page 43: Coupling The Frequencies

    ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output zation is activated, the offsets in the reference trace are removed from the current measurement results to compensate for the inherent distortions. Reference line The reference line is defined by the Reference Value Reference Position in the...
  • Page 44 ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output frequencies for calibration in advance. The frequencies and levels supported by the connected signal generator are provided for reference with the interface configuration. Two different methods are available to define the frequencies for calibration, that is to couple the frequencies of the R&S FSW with those of the signal generator: ●...
  • Page 45 ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output TTL synchronization Some Rohde & Schwarz signal generators support TTL synchronization when connec- ted via GPIB. The TTL interface is included in the AUX CONTROL connector of the R&S FSW-B10 option.

  • Page 46: Displayed Information And Errors

    ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output Example: Example for reverse sweep via minimum frequency = 100 MHz AnalyzerStart = 200 MHz AnalyzerStop = -150 MHz Offset = 20 MHz Numerator = Denominator = 1 →F = 50 MHz GeneratorStart...
  • Page 47 ® Measurement Basics R&S FSW-K7 Receiving Data Input and Providing Data Output Message Description "Ext. Generator Command Error!" Missing or wrong command in the generator setup file (see chapter 4.7.4.3, "Generator Setup Files", on page 40 "Ext. Generator Visa Error!!" Error with Visa driver provided with installation (very unlikely) Overloading...

  • Page 48: Analog Demodulation In Msra/Msrt Operating Mode

    ® Measurement Basics R&S FSW-K7 Analog Demodulation in MSRA/MSRT Operating Mode other connected devices. Using the same trigger on several devices is useful to syn- chronize the transmitted and received signals within a measurement. For details on the connectors see the R&S FSW "Getting Started" manual. External trigger as input If the trigger signal for the R&S FSW is provided by an external reference, the refer- ence signal source must be connected to the R&S FSW and the trigger source must be...
  • Page 49 ® Measurement Basics R&S FSW-K7 Analog Demodulation in MSRA/MSRT Operating Mode Analysis line A frequent question when analyzing multi-standard signals is how each data channel is correlated (in time) to others. Thus, an analysis line has been introduced. The analysis line is a common time marker for all MSRA applications.

  • Page 50: Configuration

    ® Configuration R&S FSW-K7 Default Settings for Analog Demodulation 5 Configuration Analog demodulation measurements require a special application on the R&S FSW, which you activate using the MODE key on the front panel. When you activate an Analog Demodulation application the first time, a set of parame- ters is passed on from the currently active application (see chapter 5.1, "Default Set- tings for Analog...

  • Page 51: Configuration According To Digital Standards

    ® Configuration R&S FSW-K7 Configuration According to Digital Standards ● attenuation ● preamplification ● signal source and digital I/Q input settings ● input coupling ● external mixer After initial setup, the parameters for the measurement channel are stored upon exiting and restored upon re-entering the channel.
  • Page 52 ® Configuration R&S FSW-K7 Configuration According to Digital Standards Digital standard settings are available via the "Digital Standards" softkey in the MEAS menu or the "Overview". Setup Standard......................52 └ Selecting the Storage Location - Drive/ Path/ Files........52 └ File Name......................52 └...

  • Page 53: Configuration Overview

    ® Configuration R&S FSW-K7 Configuration Overview Load Standard ← Setup Standard Loads the selected measurement settings file. Remote command: on page 180 [SENSe:​ ] ADEMod:​ P RESet[:​ S TANdard]​ Save Standard ← Setup Standard Saves the current measurement settings for a specific standard as a file with the defined name.
  • Page 54 ® Configuration R&S FSW-K7 Configuration Overview In addition to the main measurement settings, the "Overview" provides quick access to the main settings dialog boxes. Thus, you can easily configure an entire Analog Demodulation measurement channel from input over processing to output and analysis by stepping through the dialog boxes as indicated in the "Overview".

  • Page 55: Input And Frontend Settings

    ® Configuration R&S FSW-K7 Input and Frontend Settings Preset Channel Select the "Preset Channel" button in the lower lefthand corner of the "Overview" to restore all measurement settings in the current channel to their default values. Note that the PRESET key on the front panel restores the entire instrument to its default values and thus closes all measurement channels on the R&S FSW (except for the default Spectrum application channel)! For details see...

  • Page 56: Radio Frequency Input

    ® Configuration R&S FSW-K7 Input and Frontend Settings Some settings are also available in the "Amplitude" tab of the "Amplitude" dialog box. Since the Digital I/Q input and the Analog Baseband input use the same digital signal path, both cannot be used simultaneously. When one is activated, established connec- tions for the other are disconnected.

  • Page 57: Impedance

    ® Configuration R&S FSW-K7 Input and Frontend Settings This function is not available for input from the Digital Baseband Interface (R&S FSW- B17) or from the Analog Baseband Interface (R&S FSW-B71). AC coupling blocks any DC voltage from the input signal. This is the default setting to prevent damage to the instrument.

  • Page 58: External Mixer Settings

    ® Configuration R&S FSW-K7 Input and Frontend Settings Note that the YIG-preselector is active only on frequencies greater than 8 GHz. There- fore, switching the YIG-preselector on or off has no effect if the frequency is below that value. Remote command: on page 183 INPut:​...
  • Page 59 ® Configuration R&S FSW-K7 Input and Frontend Settings External Mixer State......................59 RF Start / RF Stop......................59 Handover Freq......................60 Band..........................60 Overrange....................... 60 Preset Band........................60 Mixer Type........................60 Mixer Settings (Harmonics Configuration)..............60 └ Harmonic Type....................61 └ Range 1/2....................... 61 └...
  • Page 60 ® Configuration R&S FSW-K7 Input and Frontend Settings Handover Freq. Defines the frequency at which the mixer switches from one range to the next (if two different ranges are selected). The handover frequency can be selected freely within the overlapping frequency range. Remote command: on page 187 [SENSe:​...
  • Page 61 ® Configuration R&S FSW-K7 Input and Frontend Settings Harmonic Type ← Mixer Settings (Harmonics Configuration) Defines if only even, only odd, or even and odd harmonics can be used for conversion. Depending on this selection, the order of harmonic to be used for conversion changes (see "Harmonic Order"...
  • Page 62 ® Configuration R&S FSW-K7 Input and Frontend Settings "Table" Defines the conversion loss via the table selected from the list. Pre- defined conversion loss tables are often provided with the external mixer and can be imported to the R&S FSW. Alternatively, you can define your own conversion loss tables.
  • Page 63 ® Configuration R&S FSW-K7 Input and Frontend Settings Signal ID Activates or deactivates visual signal identification. Two sweeps are performed alter- nately. Trace 1 shows the trace measured on the upper side band (USB) of the LO (the test sweep), trace 2 shows the trace measured on the lower side band (LSB), i.e. the reference sweep.
  • Page 64 ® Configuration R&S FSW-K7 Input and Frontend Settings Write to <CVL table name> ← Bias Settings Stores the bias setting in the currently selected "Conversion loss table" for the range (see "Managing Conversion Loss Tables" on page 64). If no conversion loss table is selected yet, this function is not available ("CVL Table not selected").
  • Page 65 ® Configuration R&S FSW-K7 Input and Frontend Settings Edit Table Opens the "Edit Conversion loss table" dialog box to edit the selected conversion loss table. For details on table configuration see "Creating and Editing Conversion Loss Tables" on page 65. Remote command: on page 195 [SENSe:​...
  • Page 66 ® Configuration R&S FSW-K7 Input and Frontend Settings File Name........................66 Comment........................67 Band..........................67 Harmonic Order......................67 Bias..........................67 Mixer Name........................67 Mixer S/N........................67 Mixer Type........................68 Position/Value....................... 68 Insert Value........................68 Delete Value........................68 Shift x..........................68 Shift y..........................68 Save..........................68 File Name Defines the name under which the table is stored in the C:\r_s\instr\user\cvl\ directory on the instrument.
  • Page 67 ® Configuration R&S FSW-K7 Input and Frontend Settings Comment An optional comment that describes the conversion loss table. The comment can be freely defined by the user. Remote command: on page 193 [SENSe:​ ] CORRection:​ C VL:​ C OMMent​ Band The waveguide or user-defined band for which the table is to be applied.
  • Page 68 ® Configuration R&S FSW-K7 Input and Frontend Settings Mixer Type Specifies whether the external mixer for which the table is to be applied is a two-port or three-port type. This setting is checked against the current mixer setting before the table can be assigned to the range.

  • Page 69: Digital I/Q Input Settings

    ® Configuration R&S FSW-K7 Input and Frontend Settings 5.4.1.3 Digital I/Q Input Settings The following settings and functions are available to provide input via the Digital Base- band Interface (R&S FSW-B17) in the applications that support it. They can be configured via the INPUT/OUTPUT key, in the "Input" dialog box. For more information see the R&S FSW I/Q Analyzer and I/Q Input User Manual.
  • Page 70 ® Configuration R&S FSW-K7 Input and Frontend Settings The allowed range is from 100 Hz to 10 GHz. Remote command: on page 205 INPut:​ D IQ:​ S RATe​ on page 206 INPut:​ D IQ:​ S RATe:​ A UTO​ Full Scale Level The "Full Scale Level"...

  • Page 71: Analog Baseband Input Settings

    ® Configuration R&S FSW-K7 Input and Frontend Settings Note: If you close the R&S DigIConf window using the "Close" icon, the window is minimized, not closed. If you select the "File > Exit" menu item in the R&S DigIConf window, the application is closed.

  • Page 72: Probe Settings

    ® Configuration R&S FSW-K7 Input and Frontend Settings "I + jQ" The input signal is filtered and resampled to the sample rate of the application. Two inputs are required for a complex signal, one for the in-phase component, and one for the quadrature component. "I Only / Low IF I"...

  • Page 73: External Generator Control Settings

    ® Configuration R&S FSW-K7 Input and Frontend Settings For each possible probe connector (Baseband Input I, Baseband Input Q), the detec- ted type of probe, if any, is displayed. The following information is provided for each connected probe: ● Probe name ●...
  • Page 74 ® Configuration R&S FSW-K7 Input and Frontend Settings ● Interface Configuration Settings................74 ● Measurement Settings.................... 75 ● Source Calibration Functions.................. 78 Interface Configuration Settings The interface settings for the connection to the external generator are defined in the "Interface Configuration" subtab of the "External Generator" tab. For more information on configuring interfaces see the "Remote Control Interfaces and Protocols"...
  • Page 75 ® Configuration R&S FSW-K7 Input and Frontend Settings TTL Handshake If available for the specified generator type, this option activates TTL synchronization via handshake for GPIB connections. Using the TTL interface allows for considerably higher measurement rates than pure GPIB control, because the frequency stepping of the R&S FSW is directly coupled with the frequency stepping of the generator.
  • Page 76 ® Configuration R&S FSW-K7 Input and Frontend Settings Source State......................... 76 Source Power........................76 Source Offset........................ 76 Source Frequency Coupling..................77 (Manual) Source Frequency..................77 (Automatic) Source Frequency (Numerator/Denominator/Offset).........77 Result Frequency Start....................78 Result Frequency Stop....................78 Source State Activates or deactivates control of an external generator. Remote command: on page 222 SOURce:​...
  • Page 77 ® Configuration R&S FSW-K7 Input and Frontend Settings With this offset, attenuators or amplifiers at the output connector of the external gener- ator can be taken into account for the displayed output power values on screen or dur- ing data entry, for example. Positive offsets apply to an amplifier and negative offsets to an attenuator subsequent to the external generator.
  • Page 78 ® Configuration R&S FSW-K7 Input and Frontend Settings For more information on coupling frequencies and reverse sweeps see chapter 4.7.4.7, "Coupling the Frequencies", on page 43. For more information on error messages and the channel bar see chapter 4.7.4.8, "Displayed Information and Errors", on page 46.
  • Page 79 ® Configuration R&S FSW-K7 Input and Frontend Settings Calibrate Transmission Starts a transmission type measurement to determine a reference trace. This trace is used to calculate the difference for the normalized values. For details see chapter 4.7.4.4, "Calibration Mechanism", on page 40. Remote command: on page 226 [SENSe:​...
  • Page 80 ® Configuration R&S FSW-K7 Input and Frontend Settings Save As Trd Factor Uses the normalized measurement data to generate a transducer factor. The trace data is converted to a transducer with unit dB and stored in a file with the specified name and the suffix .trd under "c:\r_s\instr\trd".
  • Page 81 ® Configuration R&S FSW-K7 Input and Frontend Settings 5.4.2 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 Manual. 5.4.2.1 Power Sensor Settings Power sensor settings are available in the "Power Sensor"...

  • Page 82: State

    ® Configuration R&S FSW-K7 Input and Frontend Settings └ Trigger Holdoff....................85 └ Drop-Out Time....................85 └ Slope.......................85 State Switches the power measurement for all power sensors on or off. Note that in addition to this general setting, each power sensor can be activated or deactivated individually by the Select setting on each tab.

  • Page 83: Frequency Manual

    ® Configuration R&S FSW-K7 Input and Frontend Settings Frequency Manual Defines the frequency of the signal to be measured. The power sensor has a memory with frequency-dependent correction factors. This allows extreme accuracy for signals of a known frequency. Remote command: on page 213 [SENSe:​...

  • Page 84: Reference Value

    ® Configuration R&S FSW-K7 Input and Frontend Settings Reference Value Defines the reference value for relative measurements in the unit dBm. Remote command: on page 211 CALCulate<n>:​ P METer<p>:​ R ELative[:​ M AGNitude]​ Use Ref Lev Offset If activated, takes the reference level offset defined for the analyzer into account for the measured power (see "Shifting the Display (Offset)"...
  • Page 85 ® Configuration R&S FSW-K7 Input and Frontend Settings For details on supported trigger levels, see the data sheet. Remote command: on page 218 [SENSe:​ ] PMETer<p>:​ T RIGger:​ L EVel​ Hysteresis ← Using the power sensor as an external trigger Defines the distance in dB to the trigger level that the trigger source must exceed before a trigger event occurs.
  • Page 86 ® Configuration R&S FSW-K7 Input and Frontend Settings To display the "Amplitude" dialog box, do one of the following: ● Select "Amplitude" from the "Overview". ● Select the AMPT key and then the "Amplitude Config" softkey. The remote commands required to define these settings are described in chap- ter 11.4.5, "Configuring the Vertical Axis (Amplitude, Scaling)",...
  • Page 87 ® Configuration R&S FSW-K7 Input and Frontend Settings Note that for input from the External Mixer (R&S FSW-B21) the maximum reference level also depends on the conversion loss; see the R&S FSW I/Q Analyzer and I/Q Input User Manual for details. Remote command: on page 234 DISPlay[:​...
  • Page 88 ® Configuration R&S FSW-K7 Input and Frontend Settings This function is only available for the MSRA/MSRT Master, not for the applications. You can change the measurement time for the level measurement if necessary (see "Changing the Automatic Measurement Time (Meastime Manual)" on page 127).
  • Page 89 ® Configuration R&S FSW-K7 Input and Frontend Settings Both the electronic and the mechanical attenuation can be varied in 1 dB steps. Other entries are rounded to the next lower integer value. If the defined reference level cannot be set for the given attenuation, the reference level is adjusted accordingly and the warning "Limit reached"...
  • Page 90 ® Configuration R&S FSW-K7 Input and Frontend Settings Impedance ← Input Settings The reference impedance for the measured levels of the R&S FSW can be set to 50 Ω or 75 Ω. 75 Ω should be selected if the 50 Ω input impedance is transformed to a higher impe- dance using a 75 Ω...
  • Page 91 ® Configuration R&S FSW-K7 Input and Frontend Settings Reference Level Defines the expected maximum reference level. Signal levels above this value may not be measured correctly, which is indicated by the "IF OVLD" status display ("OVLD" for analog baseband or digitial baseband input). The reference level is also used to scale power diagrams;...
  • Page 92 ® Configuration R&S FSW-K7 Input and Frontend Settings ● Watt Remote command: on page 183 INPut:​ I MPedance​ on page 234 CALCulate<n>:​ U NIT:​ P OWer​ Setting the Reference Level Automatically (Auto Level) ← Reference Level Automatically determines the optimal reference level for the current input data. At the same time, the internal attenuators and the preamplifier (for analog baseband input: the full scale level) are adjusted so the signal-to-noise ratio is optimized, while signal compression, clipping and overload conditions are minimized.
  • Page 93 ® Configuration R&S FSW-K7 Input and Frontend Settings Center frequency......................93 Center Frequency Stepsize...................93 Center frequency Defines the normal center frequency of the signal. The allowed range of values for the center frequency depends on the frequency span. span > 0: span /2 ≤...

  • Page 94: Trigger Configuration

    ® Configuration R&S FSW-K7 Trigger Configuration "Manual" Defines a fixed step size for the center frequency. Enter the step size in the "Value" field. Remote command: on page 232 [SENSe:​ ] FREQuency:​ C ENTer:​ S TEP:​ L INK​ on page 233 [SENSe:​...
  • Page 95 ® Configuration R&S FSW-K7 Trigger Configuration 5.5.1 Trigger Source Settings The trigger source settings are configured in the "Trigger Source" tab of the "Trigger" dialog box. Trigger Source......................95 └ Free Run......................95 └ External Trigger 1/2/3..................95 └ Power......................96 └...
  • Page 96 ® Configuration R&S FSW-K7 Trigger Configuration "External Trigger 2" Trigger signal from the TRIGGER 2 INPUT/OUTPUT connector on the front panel. Note: Connector must be configured for "Input" in the "Outputs" con- figuration (see "Trigger 2/3" on page 100). "External Trigger 3" Trigger signal from the TRIGGER 3 INPUT/ OUTPUT connector on the rear panel.
  • Page 97 ® Configuration R&S FSW-K7 Trigger Configuration For more information on the the Digital Baseband Interface or the Analog Baseband Interface see the R&S FSW I/Q Analyzer and I/Q Input User Manual. Remote command: TRIG:SOUR BBP, see on page 250 TRIGger[:​ S EQuence]:​ S OURce​ Digital I/Q ←...
  • Page 98 ® Configuration R&S FSW-K7 Trigger Configuration RF Power ← Trigger Source Defines triggering of the measurement via signals which are outside the displayed measurement range. For this purpose the instrument uses a level detector at the first intermediate fre- quency. The input signal must be in the frequency range between 500 MHz and 8 GHz.
  • Page 99 ® Configuration R&S FSW-K7 Trigger Configuration Trigger Offset Defines the time offset between the trigger event and the start of the sweep. offset > 0: Start of the sweep is delayed offset < 0: Sweep starts earlier (pre-trigger) For the "Time" trigger source, this function is not available. Remote command: on page 246 TRIGger[:​...
  • Page 100 ® Configuration R&S FSW-K7 Trigger Configuration Trigger 2/3........................100 └ Output Type....................100 └ Level....................100 └ Pulse Length..................101 └ Send Trigger..................101 Trigger 2/3 Defines the usage of the variable TRIGGER INPUT/OUTPUT connectors, where: "Trigger 2": TRIGGER INPUT/OUTPUT connector on the front panel "Trigger 3": TRIGGER 3 INPUT/ OUTPUT connector on the rear panel (Trigger 1 is INPUT only.) Note: Providing trigger signals as output is described in detail in the R&S FSW User...

  • Page 101: Data Acquisition

    ® Configuration R&S FSW-K7 Data Acquisition Pulse Length ← Output Type ← Trigger 2/3 Defines the length of the pulse sent as a trigger to the output connector. Remote command: on page 254 OUTPut:​ T RIGger<port>:​ P ULSe:​ L ENGth​ Send Trigger ←...
  • Page 102 ® Configuration R&S FSW-K7 Data Acquisition Demodulation Bandwidth.................... 102 Demodulation Filter..................... 102 Measurement Time (AQT)..................103 Capture Offset......................103 Resolution Bandwidth....................103 Demodulation Bandwidth Defines the demodulation bandwidth of the measurement. The demodulation band- width determines the sampling rate with which the input signal is captured and ana- lyzed.
  • Page 103 ® Configuration R&S FSW-K7 Data Acquisition Measurement Time (AQT) Defines how long data is acquired for demodulatation. For details on the measurement time see chapter 4.3, "Sample Rate, Measurement Time and Trigger Offset", on page 29. Remote command: on page 240 [SENSe:​...

  • Page 104: Continuous Sweep/Run Cont

    ® Configuration R&S FSW-K7 Data Acquisition Continuous Sweep/RUN CONT.................. 104 Single Sweep/ RUN SINGLE..................104 Continue Single Sweep....................105 Refresh........................105 Measurement Time (AQT)..................105 Sweep Points......................106 Sweep/Average Count....................106 Continuous Sweep/RUN CONT After triggering, starts the sweep and repeats it continuously until stopped. This is the default setting.

  • Page 105: Continue Single Sweep

    ® Configuration R&S FSW-K7 Data Acquisition Note: Sequencer. If the Sequencer is active, the "Single Sweep" softkey only controls the sweep mode for the currently selected channel; however, the sweep mode only has an effect the next time the Sequencer activates that channel, and only for a chan- nel-defined sequence.

  • Page 106: Demodulation Display

    ® Configuration R&S FSW-K7 Demodulation Display Sweep Points Defines the number of measured values to be collected during one sweep. All values from 101 to 100001 can be set. The default value is 1001 sweep points. Remote command: on page 244 [SENSe:​...
  • Page 107 ® Configuration R&S FSW-K7 Demodulation ● Basic Demodulation Measurement Parameters (Demod)........107 ● Demodulation Spectrum..................110 ● Filter.........................113 ● Scaling........................117 ● Units........................120 5.8.1 Basic Demodulation Measurement Parameters (Demod) The basic demodulation measurement parameters define how the measurement is performed. They are configured in the "Demod" tab of the "Demodulation Settings" dia- log box.
  • Page 108 ® Configuration R&S FSW-K7 Demodulation └ Start......................109 └ Length......................109 └ Time per Division..................109 Zero Phase Reference Position (PM Time Domain only)........... 110 Phase Wrap On/Off (PM Time Domain only).............. 110 Squelch State Activates the squelch function, i.e. if the signal falls below a defined threshold, the demodulated data is automatically set to 0.
  • Page 109 ® Configuration R&S FSW-K7 Demodulation Time Domain Zoom Using the time domain zoom, the demodulated data for a particular time span is extrac- ted and displayed in more detail. This is useful if the measurement time is very large and thus each sweep point represents a large time span. The time domain zoom func- tion distributes the available sweep points only amoung the time span defined by the zoom area length.
  • Page 110 ® Configuration R&S FSW-K7 Demodulation Zero Phase Reference Position (PM Time Domain only) Defines the position at which the phase of the PM-demodulated signal is set to 0 rad. The entry is made with respect to time. In the default setting, the first measured value is set to 0 rad.
  • Page 111 ® Configuration R&S FSW-K7 Demodulation Center........................111 Start........................111 Stop........................111 Span........................111 AF Full Span....................... 112 AF Center Defines the center frequency of the demodulated data to evaluate. Remote command: on page 258 [SENSe:​ ] ADEMod:​ A F:​ C ENTer​ AF Start Defines the start frequency of the demodulated data to evaluate.
  • Page 112 ® Configuration R&S FSW-K7 Demodulation AF Full Span Sets the span (around the center frequency) of the demodulated data to the maximum of DBW/2. Remote command: on page 259 [SENSe:​ ] ADEMod:​ A F:​ S PAN:​ F ULL​ 5.8.2.2 RF Evaluation These settings are only available for RF evaluation, both in time and frequency domain.
  • Page 113 ® Configuration R&S FSW-K7 Demodulation and f =DBW/2 and span are specified in the data sheet. Remote command: on page 260 [SENSe:​ ] ADEMod:​ S PECtrum:​ S PAN[:​ M AXimum]​ on page 260 [SENSe:​ ] ADEMod:​ S PEC:​ S PAN:​ Z OOM​ Demodulation Bandwidth Defines the demodulation bandwidth of the measurement.
  • Page 114 ® Configuration R&S FSW-K7 Demodulation High Pass........................114 Pass........................114 Weighting........................115 Deemphasis........................ 116 Deactivating all AF Filters................... 116 High Pass Defines a high pass filter with the given limit to separate the DC component. The filters are indicated by the 3 dB cutoff frequency. The 50 Hz and 300 Hz filters are designed as 2nd-order Butterworth filter (12 dB/octave).
  • Page 115 ® Configuration R&S FSW-K7 Demodulation ● Absolute low pass filters: Absolute filters are indicated by the 3 dB cutoff frequency. The 3 kHz, 15 kHz and 23 kHz filters are designed as 5th-order Butterworth filters (30 dB/octave). The 150 kHz filter is designed as 8th-order Butterworth filter (48 dB/octave). The absolute low pass filters are active in the following demodulation bandwidth range: Filter type...
  • Page 116 ® Configuration R&S FSW-K7 Demodulation "CCIR Switches on the CCIR unweighted filter, which is the combination of unweighted" the 20 Hz highpass and 23 kHz low pass filter. The weighting filter is active in the following demodulation bandwidth range: 50 kHz ≤ demodulation bandwidth ≤ 1.6 MHz Remote command: on page 262 [SENSe:​...
  • Page 117 ® Configuration R&S FSW-K7 Demodulation 5.8.4 Scaling The scaling parameters define the range of the demodulated data to be displayed. They are configured in the "Scaling" tab of the "Demodulation Settings" dialog box. ► To display this dialog box, do one of the following: ●...
  • Page 118 ® Configuration R&S FSW-K7 Demodulation Note: The value defined per division refers to the default display of 10 divisions on the y-axis. If fewer divisions are displayed (e.g. because the window is reduced in height), the range per division is increased in order to display the same result range in the smaller window.
  • Page 119 ® Configuration R&S FSW-K7 Demodulation If AC is selected, the frequency offset is automatically corrected, i.e. the trace is always symmetric with respect to the zero line. ● PM time evaluation If DC is selected, the phase runs according to the existing frequency offset. In addi- tion, the DC signal contains a phase offset of ±...
  • Page 120 ® Configuration R&S FSW-K7 Demodulation Range Defines the displayed y-axis range in dB. The default value is 100 dB. For Analog Demodulation measurements, time domain scaling is defined in Hz (default: 500 kHz). Remote command: on page 238 DISPlay[:​ W INDow<n>]:​ T RACe:​ Y [:​ S CALe]​ Ref Level Position Defines the reference level position, i.e.

  • Page 121: Output Settings

    ® Configuration R&S FSW-K7 Output Settings ► To display this dialog box, do one of the following: ● Select the "Demod Settings" button in the Analog Demodulation "Overview" and select the "Units" tab. ● Select the MEAS CONFIG key and then the "Scale Config" softkey. Then select the "Units"...
  • Page 122 ® Configuration R&S FSW-K7 Output Settings How to provide trigger signals as output is described in detail in the R&S FSW User Manual. Digital I/Q output is not available for Analog Demodulation measurements. Output settings can be configured via the INPUT/OUTPUT key or in the "Outputs" dia- log box.
  • Page 123 ® Configuration R&S FSW-K7 Output Settings "Input" The signal at the connector is used as an external trigger source by the R&S FSW. No further trigger parameters are available for the connector. "Output" The R&S FSW sends a trigger signal to the output connector to be used by connected devices.
  • Page 124 ® Configuration R&S FSW-K7 Output Settings 5.9.2 Analog Demodulation Output Settings The demodulated signal in time domain results can be output to the IF/VIDEO/DEMOD output connector on the rear panel of the R&S FSW. Output is not possible if the Digital Baseband Interface (R&S FSW-B17) is active. The following settings and functions are available to configure the output in the Analog Demodulation application.
  • Page 125 ® Configuration R&S FSW-K7 Output Settings "Current Focus" dynamically switches to the currently selected window. Thus you can easily change the output signal simply by selecting the windows in the display. If a win- dow is selected that does not contain a time-domain result display, the selection is ignored and the previous setting is maintained.

  • Page 126: Automatic Settings

    ® Configuration R&S FSW-K7 Automatic Settings on page 124) and "Phones Output", adjust the volume setting using the rotary knob on the front panel. Remote command: on page 231 OUTPut:​ A DEMod[:​ O NLine]:​ P HONes​ 5.10 Automatic Settings Some settings can be adjusted by the R&S FSW automatically according to the current measurement settings.
  • Page 127 ® Configuration R&S FSW-K7 Automatic Settings Setting the Reference Level Automatically (Auto Level) Automatically determines the optimal reference level for the current input data. At the same time, the internal attenuators and the preamplifier (for analog baseband input: the full scale level) are adjusted so the signal-to-noise ratio is optimized, while signal compression, clipping and overload conditions are minimized.
  • Page 128 ® Configuration R&S FSW-K7 Automatic Settings AF Auto Scale Activates automatic scaling of the y-axis for AF measurements. RF power and RF spectrum measurements are not affected by the auto-scaling. Remote command: on page 269 [SENSe:​ ] ADJust:​ S CALe:​ Y :​ A UTO[:​ C ONTinuous]​ User Manual 1173.9240.02 ─...

  • Page 129: Analysis

    ® Analysis R&S FSW-K7 Trace Settings 6 Analysis General result analysis settings concerning the trace, markers, lines etc. can be config- ured via the "Analysis" button in the "Overview". They are identical to the analysis func- tions in the base unit except for the special marker functions. The remote commands required to perform these tasks are described in chapter 11, "Remote Commands for Analog Demodulation...

  • Page 130: Trace 1/Trace 2/Trace 3/Trace 4/Trace 5/Trace 6

    ® Analysis R&S FSW-K7 Trace Settings Trace data can also be exported to an ASCII file for further analysis. For details see chapter 6.2, "Trace / Data Export Configuration", on page 133. Trace 1/Trace 2/Trace 3/Trace 4/Trace 5/Trace 6............130 Trace Mode.........................

  • Page 131: Detector

    ® Analysis R&S FSW-K7 Trace Settings "Max Hold" The maximum value is determined over several sweeps and dis- played. The R&S FSW saves each trace point in the trace memory only if the new value is greater than the previous one. The minimum value is determined from several measurements and "Min Hold"...

  • Page 132: Average Count

    ® Analysis R&S FSW-K7 Trace Settings "Linear" The power level values are converted into linear units prior to averag- ing. After the averaging, the data is converted back into its original unit. "Logarithmic" For logarithmic scaling, the values are averaged in dBm. For linear scaling, the behavior is the same as with linear averaging.

  • Page 133: Trace / Data Export Configuration

    ® Analysis R&S FSW-K7 Trace / Data Export Configuration 6.2 Trace / Data Export Configuration The standard data management functions (e.g. saving or loading instrument settings) that are available for all R&S FSW applications are not described here. See the R&S FSW User Manual for a description of the standard functions. Trace and data export settings can be configured in the "Traces"...

  • Page 134: Marker Settings

    ® Analysis R&S FSW-K7 Marker Settings chapter 11.7.5, "Reference: ASCII File Export Format", on page 297 for details. Remote command: on page 293 FORMat:​ D EXPort:​ H EADer​ Trace to Export Defines an individual trace that will be exported to a file. This setting is not available if Export all Traces and all Table Results is selected.
  • Page 135 ® Analysis R&S FSW-K7 Marker Settings 6.3.1 Individual Marker Setup In the Analog Demodulation application, up to 17 markers or delta markers can be acti- vated for each window simultaneously. Initial marker setup is performed using the "Marker" dialog box. The markers are distributed among 3 tabs for a better overview.
  • Page 136 ® Analysis R&S FSW-K7 Marker Settings Marker State Activates or deactivates the marker in the diagram. Remote command: on page 301 CALCulate<n>:​ M ARKer<m>[:​ S TATe]​ on page 304 CALCulate<n>:​ D ELTamarker<m>[:​ S TATe]​ Marker Position (X-value) Defines the position (x-value) of the marker in the diagram. Remote command: CALCulate<n>:​...
  • Page 137 ® Analysis R&S FSW-K7 Marker Settings Using this function you can set two markers on different traces to measure the differ- ence (e.g. between a max hold trace and a min hold trace or between a measurement and a reference trace). Remote command: on page 301 CALCulate<n>:​...
  • Page 138 ® Analysis R&S FSW-K7 Marker Settings Marker Table Display....................138 Marker Stepsize......................138 Defining a Fixed Reference..................138 Link Time Marker......................139 Link AF Spectrum Marker................... 139 Marker Table Display Defines how the marker information is displayed. "On" Displays the marker information in a table in a separate area beneath the diagram.

  • Page 139: Marker Search Settings And Positioning Functions

    ® Analysis R&S FSW-K7 Marker Search Settings and Positioning Functions Alternatively, a Peak Search can be performed to set the current maximum value of the trace assigned to marker 1 as the fixed reference marker. Remote command: on page 313 CALCulate<n>:​...
  • Page 140 ® Analysis R&S FSW-K7 Marker Search Settings and Positioning Functions ● Press the MKR key, then select the "Marker Config" softkey. Then select the hori- zontal "Search Settings" tab. ● In the "Overview", select "Analysis", and switch to the vertical "Marker Config" tab. Then select the horizontal "Search Settings"...
  • Page 141 ® Analysis R&S FSW-K7 Marker Search Settings and Positioning Functions Select Marker......................141 Peak Search........................141 Search Next Peak....................... 141 Search Minimum......................141 Search Next Minimum....................142 Select Marker Opens a dialog box to select and activate or deactivate one or more markers quickly. Remote command: Marker selected via suffix <m>...

  • Page 142: Marker Function Configuration

    ® Analysis R&S FSW-K7 Marker Function Configuration Search Next Minimum Sets the selected marker/delta marker to the next (higher) minimum of the selected trace. If no marker is active, marker 1 is activated. Remote command: on page 310 CALCulate<n>:​ M ARKer<m>:​ M INimum:​ N EXT​ on page 311 CALCulate<n>:​...
  • Page 143 ® Analysis R&S FSW-K7 Marker Function Configuration The remote commands required to define these settings are described in chap- ter 11.8.1.5, "Configuring Special Marker Functions", on page 312. The Fixed Reference Marker settings are described in "Defining a Fixed Reference" on page 138.
  • Page 144 ® Analysis R&S FSW-K7 Marker Function Configuration Phase Noise Measurement State................144 Defining a Reference Point..................144 Switching All Phase Noise Measurements Off............144 Phase Noise Measurement State Activates or deactivates phase noise measurement for the reference point in the dia- gram.

  • Page 145: Marker Peak List Configuration

    ® Analysis R&S FSW-K7 Marker Peak List Configuration ● In the "Overview", select "Analysis", and switch to the vertical "Marker Function Config" tab. Then select the "n dB down" button. Select the "N dB Down Config" softkey. n dB down Marker State....................145 n dB down Delta Value....................145...
  • Page 146 ® Analysis R&S FSW-K7 Marker Peak List Configuration Peak List State......................146 Sort Mode........................146 Maximum Number of Peaks..................146 Peak Excursion......................146 Displaying Marker Numbers..................147 Exporting the Peak List....................147 Peak List State Activates/deactivates the marker peak list. If activated, the peak list is displayed and the peaks are indicated in the trace display.

  • Page 147: Limit Line Settings And Functions

    ® Analysis R&S FSW-K7 Limit Line Settings and Functions Entries from 0 dB to 80 dB are allowed; the resolution is 0.1 dB. The default setting for the peak excursion is 6 dB. Remote command: on page 308 CALCulate<n>:​ M ARKer:​ P EXCursion​ Displaying Marker Numbers By default, the marker numbers are indicated in the diagram so you can find the peaks from the list.
  • Page 148 ® Analysis R&S FSW-K7 Limit Line Settings and Functions For the limit line overview, the R&S FSW searches for all stored limit lines with the file extension .LIN in the limits subfolder of the main installation folder. The overview allows you to determine which limit lines are available and can be used for the current measurement.
  • Page 149 ® Analysis R&S FSW-K7 Limit Line Settings and Functions Visibility Displays or hides the limit line in the diagram. Up to 8 limit lines can be visible at the same time. Inactive limit lines can also be displayed in the diagram. Remote command: on page 326 CALCulate:​...
  • Page 150 ® Analysis R&S FSW-K7 Limit Line Settings and Functions This setting does not have any effect on limit lines that are defined by absolute values for the y-axis. Remote command: on page 325 CALCulate:​ L IMit<k>:​ L OWer:​ O FFSet​ on page 328 CALCulate:​...
  • Page 151 ® Analysis R&S FSW-K7 Limit Line Settings and Functions Name...........................151 Comment........................151 Threshold........................151 Margin......................... 152 X-Axis..........................152 Y-Axis..........................152 Data points........................152 Insert Value......................... 153 Delete Value........................153 Shift x.......................... 153 Shift y.......................... 153 Save..........................153 Name Defines the limit line name. All names must be compatible with Windows conventions for file names.
  • Page 152 ® Analysis R&S FSW-K7 Limit Line Settings and Functions Margin Defines a margin for the limit line. The default setting is 0 dB (i.e. no margin). Remote command: on page 325 CALCulate:​ L IMit<k>:​ L OWer:​ M ARGin​ on page 327 CALCulate:​...

  • Page 153: Zoom Functions

    ® Analysis R&S FSW-K7 Zoom Functions Insert Value Inserts a data point in the limit line above the selected one in the "Edit Limit Line" dia- log box. Delete Value Deletes the selected data point in the "Edit Limit Line" dialog box. Shift x Shifts the x-value of each data point horizontally by the defined shift width (as opposed to an additive offset defined for the entire limit line, see...

  • Page 154: Analysis In Msra/Msrt Mode

    ® Analysis R&S FSW-K7 Analysis in MSRA/MSRT Mode In multiple zoom mode, you can enlarge several different areas of the trace simultane- ously. An overview window indicates the zoom areas in the original trace, while the zoomed trace areas are displayed in individual windows. The zoom area that corre- sponds to the individual zoom display is indicated in the lower right corner, between the scrollbars.
  • Page 155 ® Analysis R&S FSW-K7 Analysis in MSRA/MSRT Mode Position........................155 Show Line........................155 Position Defines the position of the analysis line in the time domain. The position must lie within the measurement time of the multistandard measurement. Remote command: on page 337 CALCulate:​...

  • Page 156: Q Data Import And Export

    ® I/Q Data Import and Export R&S FSW-K7 Import/Export Functions 7 I/Q Data Import and Export Baseband signals mostly occur as so-called complex baseband signals, i.e. a signal representation that consists of two channels; the in phase (I) and the quadrature (Q) channel.
  • Page 157 ® I/Q Data Import and Export R&S FSW-K7 Import/Export Functions └ Export Trace to ASCII File................157 └ Trace Export Configuration................157 └ Export......................157 Import Provides functions to import data. I/Q Import ← Import Opens a file selection dialog box to select an import file that contains IQ data. This function is only available in single sweep mode and only in applications that process I/Q data, such as the I/Q Analyzer or optional applications.

  • Page 158: How To Export And Import I/Q Data

    ® I/Q Data Import and Export R&S FSW-K7 How to Export and Import I/Q Data Note: Secure user mode. In secure user mode, settings that are to be stored on the instrument are stored to vol- atile memory, which is restricted to 256 MB. Thus, a "Memory full" error may occur although the hard disk indicates that storage space is still available.
  • Page 159 ® I/Q Data Import and Export R&S FSW-K7 How to Export and Import I/Q Data 6. Select "Open". The stored data is loaded from the file and displayed in the current application. Previewing the I/Q data in a web browser The iq-tar file format allows you to preview the I/Q data in a web browser.
  • Page 160 ® I/Q Data Import and Export R&S FSW-K7 How to Export and Import I/Q Data 4. Drag the I/Q parameter XML file, e.g. example.xml, into your web browser. User Manual 1173.9240.02 ─ 17...

  • Page 161: How To Perform Measurements In The Analog Demodulation Appli- Cation

    ® How to Perform Measurements in the Analog Demodulation Application R&S FSW-K7 8 How to Perform Measurements in the Ana- log Demodulation Application The following step-by-step instructions demonstrate how to perform an Analog Demod- ulation measurement with the R&S FSW-K7 option. 1.
  • Page 162 ® How to Perform Measurements in the Analog Demodulation Application R&S FSW-K7 ● Configure a trace to display the average over a series of sweeps (on the "Trace" tab; if necessary, increase the "Sweep Count" in the "Data Acquisition" settings). ●...

  • Page 163: Measurement Example: Demodulating An Fm Signal

    ® Measurement Example: Demodulating an FM Signal R&S FSW-K7 9 Measurement Example: Demodulating an FM Signal A practical example for a basic Analog Demodulation measurement is provided here. It demonstrates how operating and measurement errors can be avoided using correct configuration settings.
  • Page 164 ® Measurement Example: Demodulating an FM Signal R&S FSW-K7 Fig. 9-2: Default Analog Demodulation measurement result display 5. Set the measurement time (AQT) to 1 ms in order to measure 10 periods of the sig- nal. 6. Adjust the y-axis scaling to the measured frequency deviation automatically by selecting the "Scale Config"...
  • Page 165 ® Measurement Example: Demodulating an FM Signal R&S FSW-K7 Fig. 9-4: RF spectrum of FM signal with default demodulation bandwidth = 5 MHz 8. As you can see in figure 9-4, the default demodulation bandwidth of 5 MHz is much too large - the actual signal takes up only a small part of the displayed range.
  • Page 166 ® Measurement Example: Demodulating an FM Signal R&S FSW-K7 9. Now the RF spectrum shows that part of the FM signal is cut off. The missing sig- nal parts are not included in the calculated results. Increase the demodulation bandwidth to 400 kHz to include the entire signal, but no interfering frequencies. The span is not automatically increased for the wider DBW since it may be useful to display only a small range from the demodulated bandwidth.
  • Page 167 ® Measurement Example: Demodulating an FM Signal R&S FSW-K7 Fig. 9-7: FM spectrum and Result Summary including SINAD and THD values From the FM spectrum, the SINAD and THD are also calculated and displayed in the Result Summary. 12. Since the "AF Auto Scale" function is enabled, the "FM Spectrum" diagram is scaled according to the current measurement automatically.
  • Page 168 ® Measurement Example: Demodulating an FM Signal R&S FSW-K7 Note that while the reference values at the top of both y-axes are now identical, the reference values indicated in the window title bars are not. This is due to the fact that, by default, in AF time domain displays the reference value is defined at the reference position 50 % (=center of diagram), while in AF frequency domains it is defined at the position 100 % (= top of diagram).

  • Page 169: Optimizing And Troubleshooting The Measurement

    ® Optimizing and Troubleshooting the Measurement R&S FSW-K7 10 Optimizing and Troubleshooting the Mea- surement If the results do not meet your expectations, consider the following notes and tips to optimize the measurement. Determining the demodulation bandwidth A frequent cause for measurement errors and false results is an incorrectly defined demodulation bandwidth (DBW).

  • Page 170: Remote Commands For Analog Demodulation Measurements

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 11 Remote Commands for Analog Demodula- tion Measurements The commands required to perform measurements in the Analog Demodulation appli- cation in a remote environment are described here. It is assumed that the R&S FSW has already been set up for remote control in a net- work as described in the R&S FSW User Manual.

  • Page 171: Introduction

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Introduction 11.1 Introduction Commands are program messages that a controller (e.g. a PC) sends to the instru- ment or software. They operate its functions ('setting commands' or 'events') and request information ('query commands'). Some commands can only be used in one way, others work in two ways (setting and query).
  • Page 172 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Introduction Default parameter values that are used directly after resetting the instrument (*RST command) are indicated as *RST values, if available. ● Default unit This is the unit used for numeric values if no other unit is provided with the parame- ter.
  • Page 173 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Introduction Example: Without a numeric suffix in the optional keyword: [SENSe:]FREQuency:CENTer is the same as FREQuency:CENTer With a numeric suffix in the optional keyword: DISPlay[:WINDow<1...4>]:ZOOM:STATe DISPlay:ZOOM:STATe ON enables the zoom in window 1 (no suffix). DISPlay:WINDow4:ZOOM:STATe ON enables the zoom in window 4.
  • Page 174 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Introduction Values exceeding the resolution of the instrument are rounded up or down. If the number you have entered is not supported (e.g. in case of discrete steps), the command returns an error. Instead of a number, you can also set numeric values with a text parameter in special cases.

  • Page 175: Common Suffixes

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Common Suffixes 11.1.6.3 Character Data Character data follows the syntactic rules of keywords. You can enter text using a short or a long form. For more information see chapter 11.1.2, "Long and Short Form", on page 172.

  • Page 176: Activating Analog Demodulation Measurements

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Activating Analog Demodulation Measurements Suffix Value range Description <n> 1..6 Window or Evaluation <t> 1..6 Trace 11.3 Activating Analog Demodulation Measurements Analog demodulation measurements require a special application on the R&S FSW. The measurement is started immediately with the default settings.
  • Page 177 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Activating Analog Demodulation Measurements <ChannelName> String containing the name of the channel. The channel name is displayed as the tab label for the measurement 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 on page 177).
  • Page 178 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Activating Analog Demodulation Measurements Return values: <ChannelType>, For each channel, the command returns the channel type and <ChannelName> channel name (see tables below). Tip: to change the channel name, use the INSTrument:​...
  • Page 179 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Activating Analog Demodulation Measurements Application <ChannelType> Parameter Default Channel Name*) 1xEV-DO BTS (R&S FSW- 1xEV-DO BTS K84) 1xEV-DO MS 1xEV-DO MS (R&S FSW- K85) WLAN (R&S FSW-K91) WLAN WLAN LTE (R&S FSW-K10x) Realtime Spectrum RTIM Realtime Spectrum...

  • Page 180: Configuring The Measurement

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Manual operation: "Preset Channel" on page 55 11.4 Configuring the Measurement The following remote commands are required to configure an Analog Demodulation measurement. Specific commands: ● Managing Standard Settings.................180 ●...
  • Page 181 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Manual operation: "Load Standard" on page 53 [SENSe:]ADEMod:PRESet:RESTore This command restores the default configurations of predefined Analog Demodulation standards. Note that the command will overwrite customized standards that have the same name as predefined standards.
  • Page 182 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement INPut:ATTenuation:PROTection:RESet This command resets the attenuator and reconnects the RF input with the input mixer after an overload condition occured and the protection mechanism intervened.The error status bit (bit 3 in the STAT:QUES:POW status register) and the INPUT OVLD message in the status bar are cleared.
  • Page 183 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement INPut:FILTer:HPASs[:STATe] <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 DUT, for example.
  • Page 184 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Usage: SCPI confirmed Manual operation: "Impedance" on page 57 "Unit" on page 87 INPut:SELect <Source> This command selects the signal source for measurements, i.e. it defines which con- nector is used to input data to the R&S FSW.
  • Page 185 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement ....................185 [SENSe:]MIXer:LOPower ....................186 [SENSe:]MIXer:SIGNal ..................... 186 [SENSe:]MIXer:THReshold [SENSe:]MIXer[:STATe] <State> Activates or deactivates the use of a connected external mixer as input for the mea- surement. This command is only available if the R&S FSW-B21 option is installed and an external mixer is connected.
  • Page 186 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: MIX:LOP 16.0dBm Manual operation: "LO Level" on page 62 [SENSe:]MIXer:SIGNal <State> This command specifies whether automatic signal detection is active or not. Note that automatic signal identification is only available for measurements that per- form frequency sweeps (not in vector signal analysis or the I/Q Analyzer, for instance).
  • Page 187 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement ................188 [SENSe:]MIXer:HARMonic:BAND[:VALue] ................189 [SENSe:]MIXer:HARMonic:HIGH:STATe ................ 189 [SENSe:]MIXer:HARMonic:HIGH[:VALue] ..................189 [SENSe:]MIXer:HARMonic:TYPE ..................189 [SENSe:]MIXer:HARMonic[:LOW] ....................190 [SENSe:]MIXer:LOSS:HIGH ................. 190 [SENSe:]MIXer:LOSS:TABLe:HIGH ................190 [SENSe:]MIXer:LOSS:TABLe[:LOW] ...................190 [SENSe:]MIXer:LOSS[:LOW] ....................191 [SENSe:]MIXer:PORTs ................191 [SENSe:]MIXer:RFOVerrange[:STATe] [SENSe:]MIXer:FREQuency:HANDover <Frequency> This command defines the frequency at which the mixer switches from one range to the next (if two different ranges are selected).
  • Page 188 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [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 even after using the PRESET function.
  • Page 189 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [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 *RST: Example: MIX:HARM:HIGH:STAT ON Manual operation: "Range 1/2"...
  • Page 190 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [SENSe:]MIXer:LOSS:HIGH <Average> This command defines the average conversion loss to be used for the entire high (sec- ond) range. Parameters: <Average> numeric value Range: 0 to 100 *RST: 24.0 dB Default unit: dB MIX:LOSS:HIGH 20dB...
  • Page 191 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [SENSe:]MIXer:PORTs <PortType> This command specifies whether the mixer is a 2-port or 3-port type. Parameters: <PortType> 2 | 3 *RST: Example: MIX:PORT 3 Manual operation: "Mixer Type" on page 60 [SENSe:]MIXer:RFOVerrange[:STATe] <State>...
  • Page 192 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Band> K | A | KA | Q | U | V | E | W | F | D | G | Y | J | USER Standard waveguide band or user-defined band.
  • Page 193 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement This command is only available with option B21 (External Mixer) installed. CORR:CVL:SEL 'LOSS_TAB_4' Example: Selects the conversion loss table. CORR:CVL:CLE Usage: Event Manual operation: "Delete Table" on page 65 [SENSe:]CORRection:CVL:COMMent <Text>...
  • Page 194 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [SENSe:]CORRection:CVL:HARMonic <HarmOrder> 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.
  • Page 195 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <PortType> 2 | 3 *RST: Example: CORR:CVL:SEL 'LOSS_TAB_4' Selects the conversion loss table. CORR:CVL:PORT 3 Manual operation: "Mixer Type" on page 68 [SENSe:]CORRection:CVL:SELect <FileName> This command selects the conversion loss table with the specified file name. If <file_name>...
  • Page 196 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement *RST //Activate the use of the connected external mixer. SENS:MIX ON //----------- Configuring basic mixer behavior ------------- //Set the LO level of the mixer's LO port to 15 dBm. SENS:MIX:LOP 15dBm //Set the bias current to -1 mA .
  • Page 197 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement *RST //Activate the use of the connected external mixer. SENS:MIX 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 loss table for USER band'...
  • Page 198 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement 11.4.2.3 Configuring Input via the Analog Baseband Interface (R&S FSW-B71) The following commands are required to control the Analog Baseband Interface (R&S FSW-B71) in a remote environment.They are only available if this option is instal- led.
  • Page 199 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <State> Automatic definition Manual definition according to INPut:​ I Q:​ F ULLscale[:​ on page 199 LEVel]​ *RST: Example: INP:IQ:FULL:AUTO OFF Manual operation: "Full Scale Level Mode / Value" on page 92 INPut:IQ:FULLscale[:LEVel] <PeakVoltage>...
  • Page 200 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <DataType> IQ | I | Q The input signal is filtered and resampled to the sample rate of the application. Two input channels are required for each input signal, one for the in-phase component, and one for the quadrature compo- nent.
  • Page 201 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [SENSe:]PROBe<ch>:SETup:CMOFfset <CMOffset> Sets the common mode offset. The setting is only available if a differential probe is connected to the R&S FSW. If the probe is disconnected, the common mode offset of the probe is reset to 0.0 V. For details see the R&S FSW I/Q Analyzer and I/Q Input User Manual.
  • Page 202 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <ConvFact> numeric value *RST: TRACe:IQ:APCon:B <ConvFact> Defines the conversion factor B for the calculation of the average power consumption. For details see the R&S FSW I/Q Analyzer and I/Q Input User Manual. Parameters: <ConvFact>...
  • Page 203 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Remote commands for the R&S DigIConf software Remote 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 connection.
  • Page 204 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement <SampleRate> Maximum or currently used sample rate of the connected device in Hz (depends on the used connection protocol version; indica- ted by <SampleRateType> parameter) <MaxTransferRate> Maximum data transfer rate of the connected device in Hz <ConnProtState>...
  • Page 205 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Manual operation: "Full Scale Level" on page 70 INPut:DIQ:RANGe:COUPling <State> If enabled, the reference level for digital input is adjusted to the full scale level automat- ically if the full scale level changes. This command is only available if the optional Digital Baseband Interface (R&S FSW- B17) is installed.
  • Page 206 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <SampleRate> Range: 1 Hz to 10 GHz *RST: 32 MHz Example: INP:DIQ:SRAT 200 MHz Manual operation: "Input Sample Rate" on page 69 INPut:DIQ:SRATe:AUTO <State> If enabled, the sample rate of the digital I/Q input signal is set automatically by the con- nected device.
  • Page 207 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [SENSe:]PROBe<p>:ID:SRNumber? Queries the serial 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;...
  • Page 208 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Return values: <Name> Name string Usage: Query only [SENSe:]PROBe<p>:SETup:STATe? Queries if the probe at the specified connector is active (detected) or not active (not detected). To switch the probe on, i.e. activate input from the connector, use INP:SEL:AIQ (see on page 184).
  • Page 209 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Configuring Power Sensors ......209 SYSTem:COMMunicate:RDEVice:PMETer<p>:CONFigure:AUTO[:STATe] ............209 SYSTem:COMMunicate:RDEVice:PMETer:COUNt? ............209 SYSTem:COMMunicate:RDEVice:PMETer<p>:DEFine SYSTem:COMMunicate:RDEVice:PMETer<p>:CONFigure:AUTO[:STATe] <State> This command turns automatic assignment of a power sensor to the power sensor index on and off. Suffix: <p>...
  • Page 210 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Query parameters: <Type> The power sensor type, e.g. "NRP-Z81". <Interface> Currently not evaluated Return values: <Placeholder> Currently not used <Type> Detected power sensor type, e.g. "NRP-Z81". <Interface> Interface the power sensor is connected to; always "USB" <SerialNo>...
  • Page 211 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Note that you have to disconnect the signals from the power sensor input before you start to zero the power sensor. Otherwise, results are invalid. Suffix: <p> 1...4 Power sensor index Parameters: ONCE...
  • Page 212 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement CALCulate<n>:PMETer<p>:RELative:STATe <State> This command turns relative power sensor measurements on and off. Suffix: <p> 1...4 Power sensor index Parameters: <State> ON | OFF *RST: Example: CALC:PMET2:REL:STAT ON Activates the relative display of the measured value for power sensor 2.
  • Page 213 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Manual operation: "Duty Cycle" on page 84 [SENSe:]PMETer<p>:DCYCle:VALue <Percentage> This command defines the duty cycle for the correction of pulse signals. The power sensor uses the duty cycle in combination with the mean power to calculate the power of the pulse.
  • Page 214 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Coupling> CENTer Couples the frequency to the center frequency of the analyzer MARKer1 Couples the frequency to the position of marker 1 Switches the frequency coupling off *RST: CENTer Example:...
  • Page 215 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: PMET2:MTIM:AVER ON Activates manual averaging. PMET2:MTIM:AVER:COUN 8 Sets the number of readings to 8. Manual operation: "Average Count (Number of Readings)" on page 84 [SENSe:]PMETer<p>:MTIMe:AVERage[:STATe] <State> This command turns averaging for power sensor measurements on and off. Suffix: <p>...
  • Page 216 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <State> ON | OFF *RST: Example: PMET1 ON Switches the power sensor measurements on. Manual operation: "State" on page 82 "Select" on page 82 [SENSe:]PMETer<p>:UPDate[:STATe] <State> This command turns continuous update of power sensor measurements on and off. If on, the results are update even if a single sweep is complete.
  • Page 217 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Unit> DB | PCT *RST: Example: UNIT:PMET:POW:RAT DB Manual operation: "Unit/Scale" on page 83 Triggering with Power Sensors ................217 [SENSe:]PMETer<p>:TRIGger:DTIMe ................217 [SENSe:]PMETer<p>:TRIGger:HOLDoff ..............218 [SENSe:]PMETer<p>:TRIGger:HYSTeresis ................218 [SENSe:]PMETer<p>:TRIGger:LEVel ................218 [SENSe:]PMETer<p>:TRIGger:SLOPe ................
  • Page 218 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [SENSe:]PMETer<p>:TRIGger:HYSTeresis <Hysteresis> This command defines the trigger hysteresis for external power triggers. The hysteresis in dB is the value the input signal must stay below the IF power trigger level in order to allow a trigger to start the measurement.
  • Page 219 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Edge> POSitive The measurement starts in case the trigger signal shows a posi- tive edge. NEGative The measurement starts in case the trigger signal shows a neg- ative edge.
  • Page 220 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement ..................220 SOURce:EXTernal:FREQuency ............220 SOURce:EXTernal:FREQuency:COUPling[:STATe] ............ 220 SOURce:EXTernal:FREQuency[:FACTor]:DENominator ............221 SOURce:EXTernal:FREQuency[:FACTor]:NUMerator ................221 SOURce:EXTernal:FREQuency:OFFSet .................. 222 SOURce:EXTernal:POWer[:LEVel] .................... 222 SOURce:EXTernal[:STATe] ..............222 SOURce:POWer[:LEVel][:IMMediate]:OFFSet SOURce:EXTernal:FREQuency <Frequency> This command defines a fixed source frequency for the external generator. Parameters: <Frequency>...
  • Page 221 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Numerator    Source Freq Offset Denominato Parameters: <Value> <numeric value> *RST: Example: SOUR:EXT:FREQ:NUM 4" "SOUR:EXT:FREQ:DEN 3" Sets a multiplication factor of 4/3, i.e. the transmit frequency of the generator is 4/3 times the analyzer frequency.
  • Page 222 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Offset> <numeric value>, specified in Hz, kHz, MHz or GHz, rounded to the nearest Hz *RST: 0 Hz Example: SOUR:EXT:FREQ:OFFS 10HZ Sets an offset of the generator output frequency compared to the analyzer frequency of 10 Hz.
  • Page 223 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Interface Configuration The following commands are required to configure the interface for the connection to the external generator.................223 SOURce:EXTernal:ROSCillator[:SOURce] ..........223 SYSTem:COMMunicate:GPIB:RDEVice:GENerator:ADDRess ............ 223 SYSTem:COMMunicate:RDEVice:GENerator:INTerface ............224 SYSTem:COMMunicate:RDEVice:GENerator:LINK ............
  • Page 224 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: SYST:COMM:RDEV:GEN:INT TCP Manual operation: "Interface" on page 74 SYSTem:COMMunicate:RDEVice:GENerator:LINK <Type> This command selects the link type of the external generator if the GPIB interface is used. The difference between the two GPIB operating modes is the execution speed. While, during GPIB operation, each frequency to be set is transmitted to the generator sepa- rately, a whole frequency list can be programmed in one go if the TTL interface is also used.
  • Page 225 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Address> TCP/IP address between 0.0.0.0 and 0.255.255.255 *RST: 0.0.0.0 Example: SYST:COMM:TCP:RDEV:GEN:ADDR 130.094.122.195 Manual operation: "GPIB Address / TCP/IP Address" on page 75 Source Calibration The following commands are required to activate the calibration functions of the exter- nal tracking generator.
  • Page 226 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <MeasType> THRough "TRANsmission" mode: calibration with direct connection between external generator and device input "REFLection" mode: calibration with short circuit at the input OPEN only allowed in "REFLection" mode: calibration with open input Example: INIT:CONT OFF Selects single sweep operation...
  • Page 227 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: CORR:REC Usage: Event Manual operation: "Recall" on page 79 [SENSe:]CORRection[:STATe] <State> This command turns correction of measurement results (normalization) on and off. The command is available after you have created a reference trace for the selected measurement type with on page 225.
  • Page 228 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement It assumes a signal generator of the type SMU04 is connected to the R&S FSW, including TTL synchronization, as described in chapter 4.7.4.1, "External Generator Connections", on page 36. //--------------Preparing the instrument ----------- //Reset the instrument *RST...
  • Page 229 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement SOUR:EXT:FREQ:FACT:DEN 2 SOUR:EXT:FREQ:OFFS 100KHZ //--------------Performing the calibration measurement ----------- //Perform a transmission measurement with direct connection between the generator //and the analyzer and wait till the end SENS:CORR:METH TRAN SENS:CORR:COLL:ACQ THR;...
  • Page 230 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <State> ON | OFF *RST: Example: DIAG:SERV:NSO ON Manual operation: "Noise Source" on page 122 OUTPut:ADEMod[:ONLine][:STATe] <State> This command enables or disables online demodulation output to the IF/VIDEO/ DEMOD output connector on the rear panel of the R&S FSW.
  • Page 231 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Frequency> numeric value Range: 10 Hz to DemodBW/10 (= 300 kHz for active demodulation output) *RST: 100 Hz Example: OUTP:ADEM:ONL:AF:CFR 100Hz Manual operation: "AC Cutoff Frequency" on page 125 OUTPut:ADEMod[:ONLine]:PHONes <State>...
  • Page 232 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Frequency> The allowed range and f is specified in the data sheet. Increases the center frequency by the step defined using the command. [SENSe:​ ] FREQuency:​ C ENTer:​ S TEP​ DOWN Decreases the center frequency by the step defined using the command.
  • Page 233 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <CouplingType> SPAN Couples the step size to the span. Available for measurements in the frequency domain. (for RF spectrum result display) Couples the step size to the resolution bandwidth. Available for measurements in the time domain.
  • Page 234 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Remote commands exclusive to amplitude configuration: ............234 CALCulate<n>:MARKer<m>:FUNCtion:REFerence ................... 234 CALCulate<n>:UNIT:POWer ............234 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:RLEVel ..........235 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:RLEVel:OFFSet CALCulate<n>:MARKer<m>:FUNCtion:REFerence This command matches the reference level to the power level of a marker. If you use the command in combination with a delta marker, that delta marker is turned into a normal marker.
  • Page 235 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:RLEVel:OFFSet <Offset> This command defines a reference level offset. Parameters: <Offset> Range: -200 dB to 200 dB *RST: Example: DISP:TRAC:Y:RLEV:OFFS -10dB Manual operation: "Shifting the Display (Offset)" on page 87 11.4.5.2 Configuring the Attenuation ......................235...
  • Page 236 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement This function is not available if the Digital Baseband Interface (R&S FSW-B17) is active. Parameters: <State> ON | OFF | 0 | 1 *RST: Example: INP:ATT:AUTO ON Couples the attenuation to the reference level. Usage: SCPI confirmed Manual operation:...
  • Page 237 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement INPut:EATT:STATe <State> This command turns the electronic attenuator on and off. This command is only available with option R&S FSW-B25. It is not available if R&S FSW-B17 is active. Parameters: <State>...
  • Page 238 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Gain> 15 dB | 30 dB The availability of preamplification levels depends on the R&S FSW model. R&S FSW8/13: 15dB and 30 dB R&S FSW26 or higher: 30 dB All other values are rounded to the nearest of these two.
  • Page 239 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement When the display update during remote control is off, this command has no immediate effect. Parameters: <Mode> ABSolute absolute scaling of the y-axis RELative relative scaling of the y-axis *RST: ABSolute Example:...
  • Page 240 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: DISP:TRAC:Y:SPAC LIN Selects linear scaling in %. Usage: SCPI confirmed Manual operation: "Deviation" on page 119 "Scaling" on page 120 11.4.6 Configuring Data Acquisition The following remote commands are required to configure which data is to be acquired and then demodulated in a remote environment.
  • Page 241 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: ADEM:RLEN? Returns the current record length. Usage: Query only [SENSe:]ADEMod:SET <SampleRate> | <RecordLength> | <TriggerSource> | <TriggerSlope> | <OffsetSamples> | <NoOfMeas> This command configures the analog demodulator of the instrument. Parameters: <SampleRate>...
  • Page 242 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: ADEM:SET 8MHz,32000,EXT,POS,-500,30 Performs a measurement at: sample rate = 8 MHz record length = 32000 trigger source = EXTernal trigger slope = POSitive offset samples = -500 (500 samples before trigger occurred) # of meas = 30 [SENSe:]ADEMod:SPECtrum:BANDwidth|BWIDth[:RESolution] <Bandwidth>...
  • Page 243 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: BAND:DEM 1MHz Sets demodulation bandwidth to 1 MHz Manual operation: "Demodulation Bandwidth" on page 102 [SENSe:]BANDwidth|BWIDth:DEMod:TYPE <FilterType> This command defines the type of demodulation filter to be used. This command is identical to SENS:ADEM:BAND:DEM:TYPE: Parameters: <FilterType>...
  • Page 244 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <SweepCount> When you set a sweep count of 0 or 1, the R&S FSW performs one single sweep in single sweep mode. In continuous sweep mode, if the sweep count is set to 0, a moving average over 10 sweeps is performed.
  • Page 245 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement 11.4.7.1 Configuring the Triggering Conditions ................245 TRIGger[:SEQuence]:BBPower:HOLDoff ...................245 TRIGger[:SEQuence]:DTIMe ................246 TRIGger[:SEQuence]:HOLDoff[:TIME] ................246 TRIGger[:SEQuence]:IFPower:HOLDoff ..............246 TRIGger[:SEQuence]:IFPower:HYSTeresis ................247 TRIGger[:SEQuence]:LEVel:BBPower ..............247 TRIGger[:SEQuence]:LEVel[:EXTernal<port>] ................247 TRIGger[:SEQuence]:LEVel:IFPower ................248 TRIGger[:SEQuence]:LEVel:IQPower ................248 TRIGger[:SEQuence]:LEVel:RFPower ................
  • Page 246 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <DropoutTime> Dropout time of the trigger. Range: 0 s to 10.0 s *RST: Manual operation: "Drop-Out Time" on page 99 TRIGger[:SEQuence]:HOLDoff[:TIME] <Offset> Defines the time offset between the trigger event and the start of the sweep (data cap- turing).
  • Page 247 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: TRIG:SOUR IFP Sets the IF power trigger source. TRIG:IFP:HYST 10DB Sets the hysteresis limit value. Manual operation: "Hysteresis" on page 99 TRIGger[:SEQuence]:LEVel:BBPower <Level> This command sets the level of the baseband power trigger. This command is available for the Digital Baseband Interface (R&S FSW-B17) and the Analog Baseband Interface (R&S FSW-B71).
  • Page 248 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <TriggerLevel> For details on available trigger levels and trigger bandwidths see the data sheet. *RST: -10 dBm Example: TRIG:LEV:IFP -30DBM Manual operation: "Trigger Level" on page 98 TRIGger[:SEQuence]:LEVel:IQPower <TriggerLevel>...
  • Page 249 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Manual operation: "Trigger Level" on page 98 TRIGger[:SEQuence]:LEVel:AM[:ABSolute] <Level> The command sets the level when RF power signals are used as trigger source. For triggering to be successful, the measurement time must cover at least 5 periods of the audio signal.
  • Page 250 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement TRIGger[:SEQuence]:SLOPe <Type> For all trigger sources except time you can define whether triggering occurs when the signal rises to the trigger level or falls down to it. For external and time domain trigger sources you can define whether triggering occurs when the signal rises to the trigger level or falls down to it.
  • Page 251 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Source> IMMediate Free Run EXTernal Trigger signal from the TRIGGER INPUT connector. EXT2 Trigger signal from the TRIGGER INPUT/OUTPUT connector. Note: Connector must be configured for "Input". EXT3 Trigger signal from the TRIGGER 3 INPUT/ OUTPUT connector.
  • Page 252 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement corresponds to the AM signal PM power signal GP0 | GP1 | GP2 | GP3 | GP4 | GP5 For applications that process I/Q data, such as the I/Q Analyzer or optional applications, and only if the Digital Baseband Inter- face (R&S FSW-B17) is available.
  • Page 253 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement 11.4.7.2 Configuring the Trigger Output The following commands are required to send the trigger signal to one of the variable TRIGGER INPUT/OUTPUT connectors. The tasks for manual operation are described "Trigger 2/3"...
  • Page 254 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement OUTPut:TRIGger<port>:OTYPe <OutputType> This command selects the type of signal generated at the trigger output. Note: For offline AF or RF triggers, no output signal is provided. Suffix: <port> Selects the trigger port to which the output is sent.
  • Page 255 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement 11.4.8 Configuring Demodulation The following remote commands are required to configure the demodulation parame- ters in a remote environment. The tasks for manual operation are described in chap- ter 5.8, "Demodulation", on page 106.
  • Page 256 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Time> 0 s to measurement time *RST: Example: ADEM:PM:RPO 500us Sets the position where the phase to 0 rad setting to 500 µs. Usage: SCPI confirmed Manual operation: "Zero Phase Reference Position (PM Time Domain only)"...
  • Page 257 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement ................257 [SENSe:]ADEMod<n>:ZOOM:LENGth ..............257 [SENSe:]ADEMod<n>:ZOOM:LENGth:MODE ................257 [SENSe:]ADEMod<n>:ZOOM:STARt ................258 [SENSe:]ADEMod<n>:ZOOM[:STATe] [SENSe:]ADEMod<n>:ZOOM:LENGth <Length> The command allows you to define the length of the time domain zoom area for the analog-demodulated measurement data in the specified window manually.
  • Page 258 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Time> Range: 0 s to (measurement time – zoom length) *RST: Example: ADEM:ZOOM:STAT ON Switches on the zoom function ADEM:ZOOM:STAR 500us Sets the starting point of the display to 500 µs. Manual operation: "Start"...
  • Page 259 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Manual operation: "AF Center" on page 111 [SENSe:]ADEMod:AF:SPAN <Span> This command sets the span (around the center frequency) for AF spectrum result dis- play. The span is limited to DBW/2 (see [SENSe:​...
  • Page 260 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: ADEM:AF:STAR 0 kHz Sets the AF start frequency to 0 kHz ADEM:AF:STOP 500 kHz Sets the AF stop frequency to 500 kHz Manual operation: "AF Stop" on page 111 RF evaluation These settings are only available for RF evaluation, both in time and frequency domain.
  • Page 261 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement 11.4.8.4 (Post-processing) AF Filters The AF filter reduces the evaluated bandwidth of the demodulated signal and can define a weighting function. AF filters are only available for AM or FM time domain evaluations.
  • Page 262 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <State> ON | OFF *RST: Example: FILT:CCIR:WEIG ON Activates the weighted CCIR filter. Manual operation: "Weighting" on page 115 [SENSe:]FILTer<n>:CCIR:[:UNWeighted][:STATe] <State> This command activates/deactivates the unweighted CCIR filter in the specified win- dow.
  • Page 263 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Manual operation: "Deemphasis" on page 116 [SENSe:]FILTer<n>:DEMPhasis[:STATe] <State> This command activates/deactivates the selected deemphasis for the specified evalua- tion. For details about deemphasis refer to "Deemphasis" on page 116. Parameters: <State>...
  • Page 264 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [SENSe:]FILTer<n>:HPASs[:STATe] <State> This command activates/deactivates the selected high pass filter for the specified eval- uation. For details on the high pass filter refer to "High Pass" on page 114. Parameters: <State>...
  • Page 265 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement 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: "Low Pass" on page 114 [SENSe:]FILTer<n>:LPASs[:STATe] <State>...
  • Page 266 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement 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; Example: DISP:TRAC:Y:RVAL 0 Sets the value assigned to the reference position to 0 Hz...
  • Page 267 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement 11.4.9 Adjusting Settings Automatically The following remote commands are required to adjust settings automatically in a remote environment. The tasks for manual operation are described in chapter 5.10, "Automatic Settings", on page 126.
  • Page 268 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Example: ADJ:CONF:DUR:MODE MAN Selects manual definition of the measurement length. ADJ:CONF:LEV:DUR 5ms Length of the measurement is 5 ms. Manual operation: "Changing the Automatic Measurement Time (Meastime Manual)" on page 127 [SENSe:]ADJust:CONFigure:DURation:MODE <Mode>...
  • Page 269 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Threshold> Range: 0 dB to 200 dB *RST: +1 dB Default unit: dB Example: SENS:ADJ:CONF:HYST:LOW 2 For an input signal level of currently 20 dBm, the reference level will only be adjusted when the signal level falls below 18 dBm.
  • Page 270 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <State> ON | OFF *RST: Example: SENS:ADJ:SCAL:Y:AUTO ON Manual operation: "AF Auto Scale" on page 119 11.4.10 Configuring Standard Traces Useful commands for trace configuration described elsewhere ●...
  • Page 271 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Mode> WRITe Overwrite mode: the trace is overwritten by each sweep. This is the default setting. AVERage The average is formed over several sweeps. The "Sweep/Aver- age Count" determines the number of averaging procedures. MAXHold The maximum value is determined over several sweeps and dis- played.
  • Page 272 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <State> The automatic reset is off. The automatic reset is on. *RST: Example: DISP:WIND:TRAC3:MODE:HCON ON Switches off the reset function. Manual operation: "Hold" on page 131 DISPlay[:WINDow<n>]:TRACe<t>:SELect This command selects the trace specified by the index <t>...
  • Page 273 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement [SENSe:]ADEMod:PM:AFSPectrum[:TYPE] [SENSe:]ADEMod:SPECtrum[:TYPE] <TraceMode1>, <TraceMode2>, <TraceMode3>, <TraceMode4>, <TraceMode5>, <TraceMode6> This command selects the trace modes of the evaluated signal to be measured simul- taneously. For each of the six available traces a mode can be defined. The trace modes are configured identically for all windows with a specific evaluation.
  • Page 274 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <TraceMode> WRITe Overwrite mode: the trace is overwritten by each sweep. This is the default setting. AVERage The average is formed over several sweeps. The Sweep/Aver- age Count determines the number of averaging procedures.
  • Page 275 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Usage: SCPI confirmed Manual operation: "Sweep/Average Count" on page 106 "Average Count" on page 132 [SENSe:]AVERage<n>[:STATe<t>] <State> This command turns averaging for a particular trace in a particular window on and off. Parameters: <State>...
  • Page 276 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Measurement Parameters: <Detector> APEak Autopeak NEGative Negative peak POSitive Positive peak QPEak Quasipeak (CISPR filter only) SAMPle First value detected per trace point RMS value AVERage Average CAVerage CISPR Average (CISPR filter only) CRMS CISPR RMS (CISPR filter only) *RST:...

  • Page 277: Capturing Data And Performing Sweeps

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Capturing Data and Performing Sweeps 11.5 Capturing Data and Performing Sweeps MSRA/MSRT operating mode Note that in MSRA/MSRT operating mode, capturing data is only possible for the MSRA/MSRT Master channel. In Analog Demodulation application channels, the sweep configuration commands define the analysis interval.
  • Page 278 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Capturing Data and Performing Sweeps Example: ABOR;:INIT:IMM Aborts the current measurement and immediately starts a new one. Example: ABOR;*WAI INIT:IMM Aborts the current measurement and starts a new one once abortion has been completed. Usage: SCPI confirmed INITiate:CONMeas...
  • Page 279 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Capturing Data and Performing Sweeps Example: INIT:CONT OFF Switches the sweep mode to single sweep . INIT:CONT ON Switches the sweep mode to continuous sweep . Manual operation: "Continuous Sweep/RUN CONT" on page 104 INITiate[:IMMediate] This command starts a (single) new measurement.
  • Page 280 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Capturing Data and Performing Sweeps INITiate:SEQuencer:ABORt This command stops the currently active sequence of measurements. The Sequencer itself is not deactivated, so you can start a new sequence immediately using on page 280. INITiate:​...
  • Page 281 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Capturing Data and Performing Sweeps Parameters: <Mode> SINGle Each measurement is performed once (regardless of the chan- nel's sweep mode), considering each channels' sweep count, until all measurements in all active channels have been per- formed.

  • Page 282: Configuring The Result Display

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Result Display Parameters: <State> ON | OFF | 0 | 1 ON | 1 The Sequencer is activated and a sequential measurement is started immediately. OFF | 0 The Sequencer is deactivated. Any running sequential measure- ments are stopped.
  • Page 283 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Result Display Parameters: <Format> SPLit Displays the MultiView tab with an overview of all active chan- nels SINGle Displays the measurement channel that was previously focused. *RST: SING Example: DISP:FORM SPL DISPlay[:WINDow<n>]:SIZE <Size>...
  • Page 284 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Result Display LAYout:ADD[:WINDow]? <WindowName>,<Direction>,<WindowType> This command adds a window to the display. This command is 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 command.
  • Page 285 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Result Display Table 11-3: <WindowType> parameter values for AnalogDemod application Parameter value Window type MTABle Marker table PEAKlist Marker peak list RSUMmary Result summary 'XTIM:AM' RF Time Domain (= RF power) 'XTIM:AM:RELative' AM Time Domain 'XTIM:AM:RELative:AFSPec-...
  • Page 286 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Result Display Query parameters: <WindowName> String containing the name of a window. Return values: <WindowIndex> Index number of the window. Usage: Query only LAYout:REMove[:WINDow] <WindowName> This command removes a window from the display. Parameters: <WindowName>...
  • Page 287 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Result Display Fig. 11-1: SmartGrid coordinates for remote control of the splitters Parameters: <Index1> The index of one window the splitter controls. <Index2> The index of a window on the other side of the splitter. <Position>...
  • Page 288 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Configuring the Result Display LAYout:WINDow<n>:ADD? <Direction>,<WindowType> This command adds a measurement window to the display. Note that with this com- mand, the suffix <n> determines the existing window next to which the new window is added, as opposed to , for which the existing window is LAYout:​...

  • Page 289: Retrieving Results

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results LAYout:WINDow<n>:REPLace <WindowType> This command changes the window type of an existing window (specified by the suffix <n>). The result of this command is identical to the com- LAYout:​ R EPLace[:​ W INDow]​ mand.
  • Page 290 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results [SENSe:]ADEMod:AM[:ABSolute][:TDOMain]:RESult? <TraceMode> [SENSe:]ADEMod:AM:RELative[:TDOMain]:RESult? <TraceMode> [SENSe:]ADEMod:AM:RELative:AFSPectrum:RESult? <TraceMode> [SENSe:]ADEMod:FM[:TDOMain]:RESult? <TraceMode> [SENSe:]ADEMod:FM:AFSPectrum:RESult? <TraceMode> [SENSe:]ADEMod:PM[:TDOMain]:RESult? <TraceMode> [SENSe:]ADEMod:PM:AFSPectrum:RESult? <TraceMode> [SENSe:]ADEMod:SPECtrum:RESult? <TraceMode> This command reads the result data of the evaluated signal in the specified trace mode.
  • Page 291 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results Usage: Query only FORMat[:DATA] <Format> This command selects the data format that is used for transmission of trace data from the R&S FSW to the controlling computer. Note that the command has no effect for data that you send to the R&S FSW. The R&S FSW automatically recognizes the data it receives, regardless of the format.
  • Page 292 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results Usage: SCPI confirmed 11.7.2 Exporting Trace Results Trace results can be exported to a file. For more commands concerning data and results storage see the R&S FSW User Manual..................292 MMEMory:STORe<n>:TRACe ..................
  • Page 293 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results Parameters: <Separator> COMMa Uses a comma as decimal separator, e.g. 4,05. POINt Uses a point as decimal separator, e.g. 4.05. *RST: *RST has no effect on the decimal separator. Default is POINt.
  • Page 294 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results 11.7.3 Retrieving Result Summary Values The result summary contains measurement values that are calculated from the trace data. For details see "Result Summary" on page 23........294 CALCulate<n>:MARKer:FUNCtion:ADEMod:AFRequency[:RESult]? ..........294 CALCulate:MARKer:FUNCtion:ADEMod:AM[:RESult<t>]? ..........294 CALCulate:MARKer:FUNCtion:ADEMod:FM[:RESult<t>]?
  • Page 295 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results Example: CALC:FEED 'XTIM:PM:TDOM' Switches on the PM time domain result display. DISP:TRAC ON Switches on the trace. CALC:MARK:FUNC:ADEM:PM? PPE Queries the peak value of the demodulated PM trace. Usage: Query only Manual operation: "Result Summary"...
  • Page 296 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results Parameters: <THD> Total harmonic distortion of the demodulated signal in dB. Usage: Query only [SENSe:]ADEMod:FM:OFFSet? <ResultType> This command calculates the FM carrier offset from the currently available measure- ment data set. If averaging has been activated before acquiring the data set (using [SENSe:​...
  • Page 297 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results [SENSe:]ADEMod:PM:RPOint[:X] <Time> This command determines the position where the phase of the PM-demodulated signal is set to 0 rad. The maximum possible value depends on the measurement time selected in the instrument; this value is output in response to the query ADEM:PM:RPO:X? MAX.
  • Page 298 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Retrieving Results The data of the file header consist of three columns, each separated by a semicolon: parameter name; numeric value; basic unit. The data section starts with the keyword "Trace <n>" (<n> = number of stored trace), followed by the measured data in one or several columns (depending on the measurement) which are also separated by a sem- icolon.

  • Page 299: Analyzing Results

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results File contents Description x-Axis;LIN; Scaling of x-axis linear (LIN) or logarithmic (LOG) y-Axis;LOG; Scaling of y-axis linear (LIN) or logarithmic (LOG) x-Unit;Hz; Unit of x values: Hz with span > 0; s with span = 0; dBm/dB with statistics measurements y-Unit;dBm;...
  • Page 300 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results ● Working with Markers Remotely................300 ● Defining Limit Checks................... 322 ● Zooming into the Display..................334 ● Configuring an Analysis Interval and Line (MSRA mode only)......336 ● Configuring an Analysis Interval and Line (MSRT mode only)......338 11.8.1 Working with Markers Remotely In the Analog Demodulation application, up to 16 markers or delta markers can be acti-...
  • Page 301 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate<n>:MARKer<m1>:LINK:TO:MARKer<m2> <State> This command links normal marker <m1> to any active normal marker <m2>. If you change the horizontal position of marker <m2>, marker <m1> changes its hori- zontal position to the same value. Parameters: <State>...
  • Page 302 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results If the marker has been used as a delta marker, the command turns it into a normal marker. Parameters: <Position> Numeric value that defines the marker position on the x-axis. The unit is either Hz (frequency domain) or s (time domain) or dB (statistics).
  • Page 303 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Manual operation: "Marker Table" on page 24 "Marker Peak List" on page 25 CALCulate<n>:DELTamarker:AOFF This command turns all delta markers off. Example: CALC:DELT:AOFF Turns all delta markers off. Usage: Event CALCulate<n>:DELTamarker<m>:LINK <State>...
  • Page 304 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Parameters: <Mode> ABSolute Delta marker position in absolute terms. RELative Delta marker position in relation to a reference marker. *RST: RELative Example: CALC:DELT:MODE ABS Absolute delta marker position. CALCulate<n>:DELTamarker<m>:MREF <Reference> This command selects a reference marker for a delta marker other than marker 1.
  • Page 305 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Parameters: <Trace> Trace number the marker is assigned to. Example: CALC:DELT2:TRAC 2 Positions delta 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 a reference marker to the peak power.
  • Page 306 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results The unit depends on the application of the command. Table 11-5: Analog demodulation measurements Parameter, measuring function or result display Output unit AM result display (R&S FSW–K7) % (lin) dB (log) FM result display (R&S FSW–K7) Hz (lin)
  • Page 307 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Parameters: <StepSize> STANdard the marker moves from one pixel to the next POINts the marker moves from one sweep point to the next *RST: POINts Example: CALC:MARK:X:SSIZ STAN Sets the marker step size to one pixel. Manual operation: "Marker Stepsize"...
  • Page 308 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results 11.8.1.3 Marker Search Settings The following commands define criteria for searches................308 CALCulate<n>:MARKer:PEXCursion CALCulate<n>:MARKer:PEXCursion <Excursion> This command defines the peak excursion. The peak excursion sets the requirements for a peak to be detected during a peak search.
  • Page 309 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results ..............310 CALCulate<n>:MARKer<m>:MINimum:NEXT ..............310 CALCulate<n>:MARKer<m>:MINimum[:PEAK] ..............310 CALCulate<n>:MARKer<m>:MINimum:RIGHt CALCulate<n>:MARKer<m>:MAXimum:LEFT This command moves a marker to the next lower peak. The search includes only measurement values to the left of the current marker posi- tion.
  • Page 310 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate<n>:MARKer<m>:MINimum:NEXT This command moves a marker to the next minimum value. Usage: Event Manual operation: "Search Mode for Next Peak" on page 140 "Search Next Minimum" on page 142 CALCulate<n>:MARKer<m>:MINimum[:PEAK] This command moves a marker to the minimum level.
  • Page 311 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate<n>:DELTamarker<m>:MAXimum:NEXT This command moves a marker to the next higher value. Usage: Event Manual operation: "Search Mode for Next Peak" on page 140 "Search Next Peak" on page 141 CALCulate<n>:DELTamarker<m>:MAXimum[:PEAK] This command moves a delta marker to the highest level.
  • Page 312 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Usage: Event Manual operation: "Search Minimum" on page 141 CALCulate<n>:DELTamarker<m>:MINimum:RIGHt This command moves a delta marker to the next higher minimum value. The search includes only measurement values to the right of the current marker posi- tion.
  • Page 313 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Parameters: <RefPoint> Numeric value that defines the horizontal position of the refer- ence. For frequency domain measurements, it is a frequency in Hz. For time domain measurements, it is a point in time in s. *RST: Fixed Reference: OFF Example:...
  • Page 314 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Example: CALC:DELT:FUNC:FIX ON Switches on the measurement with fixed reference value for all delta markers. CALC:DELT:FUNC:FIX:RPO:X 128 MHZ Sets the frequency reference to 128 MHz. CALC:DELT:FUNC:FIX:RPO:Y 30 DBM Sets the reference level to +30 dBm. Manual operation: "Defining a Fixed Reference"...
  • Page 315 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results The actual number of peaks that have been found may differ from the number of peaks you have set to be found because of the peak excursion. Return values: <NumberOfPeaks>...
  • Page 316 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Parameters: <SortMode> Sorts the peaks according to increasing position on the x-axis. Sorts the peaks according to decreasing position on the y-axis. *RST: Example: CALC:MARK:FUNC:FPE:SORT Y Sets the sort mode to decreasing y values Manual operation: "Sort Mode"...
  • Page 317 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results MMEMory:STORe:LIST <FileName> This command exports the SEM and spurious emission list evaluation to a file. The file format is *.dat. Secure User Mode In secure user mode, settings that are to be stored on the instrument are stored to vol- atile memory, which is restricted to 256 MB.
  • Page 318 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results ............318 CALCulate<n>:MARKer<m>:FUNCtion:NDBDown ........318 CALCulate<n>:MARKer<m>:FUNCtion:NDBDown:FREQuency? ............319 CALCulate:MARKer:FUNCtion:NDBDown:QFACtor? ..........319 CALCulate<n>:MARKer<m>:FUNCtion:NDBDown:RESult? ..........319 CALCulate<n>:MARKer<m>:FUNCtion:NDBDown:STATe ..........320 CALCulate<n>:MARKer<m>:FUNCtion:NDBDown:TIME? CALCulate<n>:MARKer<m>:FUNCtion:NDBDown <Distance> This command defines the distance of the n dB down markers to the reference marker. Parameters: <Distance>...
  • Page 319 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Usage: Query only Manual operation: "n dB down Delta Value" on page 145 CALCulate:MARKer:FUNCtion:NDBDown:QFACtor? This command queries the Q factor of n dB down measurements. Return values: <QFactor> Usage: Query only CALCulate<n>:MARKer<m>:FUNCtion:NDBDown:RESult? This command queries the distance of the n dB down markers from each other.
  • Page 320 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate<n>:MARKer<m>:FUNCtion:NDBDown:TIME? This command queries the position of the n dB down markers on the x-axis when measuring in the time domain. To get a valid result, you have to perform a complete measurement with synchroniza- tion to the end of the measurement before reading out the result.
  • Page 321 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Parameters: <State> ON | OFF *RST: Example: CALC:DELT:FUNC:PNO:AUTO ON Activates an automatic peak search for the reference marker in a phase-noise measurement. Manual operation: "Defining a Reference Point" on page 144 CALCulate<n>:DELTamarker<m>:FUNCtion:PNOise:RESult? This command queries the result of a phase noise measurement.
  • Page 322 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results 11.8.2 Defining Limit Checks Note that in remote control, upper and lower limit lines are configured using separate commands. Thus, you must decide in advance which you want to configure. The x-val- ues for both upper and lower limit lines are defined as a common control line.
  • Page 323 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate:LIMit<k>:CONTrol[:DATA] <LimitLinePoints> This command defines the horizontal definition points of a limit line. Parameters: <LimitLinePoints> Variable number of x-axis values. Note that the number of horizontal values has to be the same as the number of vertical values set with CALCulate:​...
  • Page 324 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Parameters: <Offset> Numeric value. The unit depends on the scale of the x-axis. *RST: Manual operation: "X-Offset" on page 149 CALCulate:LIMit<k>:CONTrol:SHIFt <Distance> This command moves a complete limit line horizontally. Compared to defining an offset, this command actually changes the limit line definition points by the value you define.
  • Page 325 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate:LIMit<k>:LOWer:MARGin <Margin> This command defines an area around a lower limit line where limit check violations are still tolerated. Parameters: <Margin> numeric value *RST: Default unit: dB Manual operation: "Margin"...
  • Page 326 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Manual operation: "Shift y" on page 153 CALCulate:LIMit<k>:LOWer:SPACing <InterpolType> This command selects linear or logarithmic interpolation for the calculation of a lower limit line from one horizontal point to the next. Parameters: <InterpolType>...
  • Page 327 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Manual operation: "Name" on page 151 CALCulate:LIMit<k>:UNIT <Unit> This command defines the unit of a limit line. Parameters: <Unit> If you select dB as the limit line unit, the command automatically turns the limit line into a relative limit line.
  • Page 328 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Parameters: <Mode> ABSolute Limit line is defined by absolute physical values. The unit is variable. RELative Limit line is defined by relative values related to the reference level (dB). *RST: ABSolute Manual operation:...
  • Page 329 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate:LIMit<k>:UPPer:STATe <State> This command turns an upper limit line on and off. Before you can use the command, you have to select a limit line with CALCulate:​ on page 326. LIMit<k>:​...
  • Page 330 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Return values: <LimitLines> String containing the names of all active limit lines in alphabeti- cal order. Example: CALC:LIM:ACT? Queries the names of all active limit lines. Usage: Query only Manual operation: "Visibility"...
  • Page 331 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate:LIMit<k>:TRACe<t>:CHECk <State> This command turns the limit check for a specific trace on and off. To query the limit check result, use CALCulate:​ L IMit<k>:​ F AIL?​ Note that this command replaces the two commands from previous signal and spec- trum analyzers (which are still supported, however): ●...
  • Page 332 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results Example: INIT;*WAI Starts a new sweep and waits for its end. CALC:LIM3:FAIL? Queries the result of the check for limit line 3. Usage: Query only SCPI confirmed 11.8.2.4 Programming Example: Using Limit Lines The following examples demonstrate how to work with limit lines in a remote environ- ment.
  • Page 333 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALC:LIM3:CONT 1 MHz,50MHz,100 MHz,150MHz,200MHz //Defines 5 horizontal definition points for limit line 3. CALC:LIM3:LOW -90,-60,-40,-60,-90 //Defines 5 definition points relative to the reference level for limit line 3. CALC:LIM3:LOW:SHIF 2 //Shifts the limit line 3 by 2dB.
  • Page 334 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results DISP:TRAC2:MODE AVER DISP:TRAC3 ON DISP:TRAC3:MODE MAXH //Configures 3 traces: 1 (default): clear/write; 2: average; 3: max hold //------------- Configuring the limit check ------------------- MMEM:LOAD:TYPE REPL MMEM:LOAD:STAT 1,'LimitLines_FM1_FM3' //Loads the limit lines stored in 'LimitLines_FM1_FM3' CALC:LIM1:NAME 'FM1' CALC:LIM1:UPP:STAT ON //Activates upper limit FM1 as line 1.
  • Page 335 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results 1 = origin of coordinate system (x1 = 0, y1 = 0) 2 = end point of system (x2 = 100, y2= 100) 3 = zoom area (e.g. x1 = 60, y1 = 30, x2 = 80, y2 = 75) Parameters: <x1>,<y1>, Diagram coordinates in % of the complete diagram that define...
  • Page 336 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results 1 = origin of coordinate system (x1 = 0, y1 = 0) 2 = end point of system (x2 = 100, y2= 100) 3 = zoom area (e.g. x1 = 60, y1 = 30, x2 = 80, y2 = 75) Suffix: <zoom>...
  • Page 337 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results For the Analog Demodulation application, the commands to define the analysis interval are the same as those used to define the actual data acquisition (see chapter 11.4.6, "Configuring Data Acquisition", on page 240.
  • Page 338 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results CALCulate:MSRA:WINDow<n>:IVAL? This command queries the analysis interval for the window specified by the index <n>. This command is only available in application measurement channels, not the MSRA View or MSRA Master. Return values: <IntStart>...
  • Page 339 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Analyzing Results ..................339 CALCulate:RTMS:ALINe:SHOW ..................339 CALCulate:RTMS:ALINe[:VALue] ................339 CALCulate:RTMS:WINDow<n>:IVAL? ................... 339 [SENSe:]RTMS:CAPTure:OFFSet CALCulate:RTMS:ALINe:SHOW This command defines whether or not the analysis line is displayed in all time-based windows in all MSRT applications and the MSRT Master. Note: even if the analysis line display is off, the indication whether or not the currently defined line position lies within the analysis interval of the active application remains in the window title bars.

  • Page 340: Importing And Exporting I/Q Data And Results

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Importing and Exporting I/Q Data and Results Parameters: <Offset> This parameter defines the time offset between the capture buf- fer start and the start of the extracted application data. The off- set must be a positive value, as the application can only analyze data that is contained in the capture buffer.

  • Page 341: Commands For Compatibility

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Commands for Compatibility Manual operation: "I/Q Export" on page 157 MMEMory:STORe:IQ:STATe 1, <FileName> This command writes the captured I/Q data to a file. The file extension is *.iq.tar. By default, the contents of the file are in 32-bit floating point format.

  • Page 342: Programming Example

    ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Programming Example Example: INST:SEL ADEM Activates analog demodulator. CALC:FEED 'XTIM:FM' Selects the display of the FM signal. Table 11-6: <Evaluation> parameter values for the AnalogDemod application Parameter Evaluation 'XTIM:AM:RELative' AM Time Domain 'XTIM:AM:RELative:AFSPectrum' AM Spectrum 'XTIM:FM'...
  • Page 343 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Programming Example //Reset the instrument FREQ:CENT 500 MHz //Set the center frequency to 500 MHz DISP:TRAC:Y:SCAL:RLEV 0 //Set the reference level to 0 dBm //---------- Activating an Analog Demod measurement channel ----------- INST:CRE:NEW ADEM,'FMDemodulation' //Activate an Analog Demodulation measurement channel named "FMDemodulation"...
  • Page 344 ® Remote Commands for Analog Demodulation Measurements R&S FSW-K7 Programming Example CALC2:MARK:FUNC:ADEM:THD:RES? //Queries the total harmonic distortion of the demodulated signal //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...

  • Page 345: A Reference

    ® Reference R&S FSW-K7 Predefined Standards and Settings A Reference A.1 Predefined Standards and Settings You can configure the Analog Demodulation application using 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.
  • Page 346 ® Reference R&S FSW-K7 Predefined Standards and Settings ● Time Domain Zoom (State, Start, Length) AF specific settings: ● AF Center ● AF Span ● AF Filters (Lowpass, Highpass, Deemphasis, Weighting) ● Scaling for Spectrum (Ref Value, Deviation) ● Scaling for Time Domain (Ref Value, AF Coupling (FM/PM only)) Table 1-1: List of predefined standards and settings Setting AM Broadcast...

  • Page 347: I/Q Data File Format (Iq-Tar)

    ® Reference R&S FSW-K7 I/Q Data File Format (iq-tar) A.2 I/Q Data File Format (iq-tar) I/Q data is packed in a file with the extension .iq.tar. An iq-tar file contains I/Q data in binary format together with meta information that describes the nature and the source of data, e.g.
  • Page 348 ® Reference R&S FSW-K7 I/Q Data File Format (iq-tar) A.2.1 I/Q Parameter XML File Specification The content of the I/Q parameter XML file must comply with the XML schema RsIqTar.xsd available at: http://www.rohde-schwarz.com/file/RsIqTar.xsd. In particular, the order of the XML elements must be respected, i.e. iq-tar uses an "ordered XML schema".
  • Page 349 ® Reference R&S FSW-K7 I/Q Data File Format (iq-tar) Element Description Samples Contains the number of samples of the I/Q data. For multi-channel signals all chan- nels have the same number of samples. One sample can be: ● A complex number represented as a pair of I and Q values ●...
  • Page 350 ® Reference R&S FSW-K7 I/Q Data File Format (iq-tar) Element Description UserData Optional: contains user, application or device-specific XML data which is not part of the iq-tar specification. This element can be used to store additional information, e.g. the hardware configuration. User data must be valid XML content. PreviewData Optional: contains further XML elements that provide a preview of the I/Q data.
  • Page 351 ® Reference R&S FSW-K7 I/Q Data File Format (iq-tar) <float>-111</float> </ArrayOfFloat> </Min> <Max> <ArrayOfFloat length="256"> <float>-67</float> <float>-69</float> <float>-70</float> <float>-69</float> </ArrayOfFloat> </Max> </Spectrum> <IQ> <Histogram width="64" height="64">0123456789...0</Histogram> </IQ> </Channel> </ArrayOfChannel> </PreviewData> A.2.2 I/Q Data Binary File The I/Q data is saved in binary format according to the format and data type specified in the XML file (see Format element and DataType element).
  • Page 352 ® Reference R&S FSW-K7 I/Q Data File Format (iq-tar) Example: Element order for complex cartesian data (3 channels) Complex data: I[channel no][time index], Q[channel no][time index] I[0][0], Q[0][0], // Channel 0, Complex sample 0 I[1][0], Q[1][0], // Channel 1, Complex sample 0 I[2][0], Q[2][0], // Channel 2, Complex sample 0 I[0][1], Q[0][1],...

  • Page 353: List Of Remote Commands (Analogdemod)

    ® List of Remote Commands (AnalogDemod) R&S FSW-K7 List of Remote Commands (AnalogDemod) [SENSe:][WINDow<n>:]DETector<t>[:FUNCtion]:AUTO................276 [SENSe:][WINDow<n>:]DETector<trace>[:FUNCtion]...................275 [SENSe:]ADEMod:AF:CENTer........................258 [SENSe:]ADEMod:AF:SPAN......................... 259 [SENSe:]ADEMod:AF:SPAN:FULL........................259 [SENSe:]ADEMod:AF:STARt.........................259 [SENSe:]ADEMod:AF:STOP......................... 259 [SENSe:]ADEMod:AM:RELative:AFSPectrum:RESult?................290 [SENSe:]ADEMod:AM:RELative:AFSPectrum[:TYPE].................. 272 [SENSe:]ADEMod:AM:RELative[:TDOMain]:RESult?................... 290 [SENSe:]ADEMod:AM:RELative[:TDOMain][:TYPE]..................272 [SENSe:]ADEMod:AM[:ABSolute][:TDOMain]:RESult?.................290 [SENSe:]ADEMod:AM[:ABSolute][:TDOMain][:TYPE]...................272 [SENSe:]ADEMod:FM:AFSPectrum:RESult?....................290 [SENSe:]ADEMod:FM:AFSPectrum[:TYPE]....................272 [SENSe:]ADEMod:FM:OFFSet?........................296 [SENSe:]ADEMod:FM[:TDOMain]:RESult?....................290 [SENSe:]ADEMod:FM[:TDOMain][:TYPE].....................272 [SENSe:]ADEMod:MTIMe..........................240 [SENSe:]ADEMod:PM:AFSPectrum:RESult?....................290...
  • Page 354 ® List of Remote Commands (AnalogDemod) R&S FSW-K7 [SENSe:]ADJust:CONFigure:HYSTeresis:UPPer..................269 [SENSe:]ADJust:FREQuency........................268 [SENSe:]ADJust:LEVel..........................269 [SENSe:]ADJust:SCALe:Y:AUTO[:CONTinuous]..................269 [SENSe:]AVERage:COUNt..........................274 [SENSe:]AVERage<n>:TYPE........................275 [SENSe:]AVERage<n>[:STATe<t>].......................275 [SENSe:]BANDwidth|BWIDth:DEMod......................242 [SENSe:]BANDwidth|BWIDth:DEMod:TYPE....................243 [SENSe:]BANDwidth|BWIDth[:RESolution]....................243 [SENSe:]CORRection:COLLect[:ACQuire]....................225 [SENSe:]CORRection:CVL:BAND......................... 191 [SENSe:]CORRection:CVL:BIAS........................192 [SENSe:]CORRection:CVL:CATAlog?......................192 [SENSe:]CORRection:CVL:CLEAr........................ 192 [SENSe:]CORRection:CVL:COMMent......................193 [SENSe:]CORRection:CVL:DATA......................... 193 [SENSe:]CORRection:CVL:HARMonic......................194 [SENSe:]CORRection:CVL:MIXer......................... 194 [SENSe:]CORRection:CVL:PORTs....................... 194 [SENSe:]CORRection:CVL:SELect....................... 195 [SENSe:]CORRection:CVL:SNUMber......................
  • Page 355 ® List of Remote Commands (AnalogDemod) R&S FSW-K7 [SENSe:]MIXer:HARMonic:BAND[:VALue]....................188 [SENSe:]MIXer:HARMonic:HIGH:STATe...................... 189 [SENSe:]MIXer:HARMonic:HIGH[:VALue].....................189 [SENSe:]MIXer:HARMonic:TYPE........................189 [SENSe:]MIXer:HARMonic[:LOW]......................... 189 [SENSe:]MIXer:LOPower..........................185 [SENSe:]MIXer:LOSS:HIGH.......................... 190 [SENSe:]MIXer:LOSS:TABLe:HIGH......................190 [SENSe:]MIXer:LOSS:TABLe[:LOW]......................190 [SENSe:]MIXer:LOSS[:LOW].........................190 [SENSe:]MIXer:PORTs..........................191 [SENSe:]MIXer:RFOVerrange[:STATe]......................191 [SENSe:]MIXer:SIGNal..........................186 [SENSe:]MIXer:THReshold..........................186 [SENSe:]MIXer[:STATe]..........................185 [SENSe:]MSRA:CAPTure:OFFSet........................ 338 [SENSe:]PMETer<p>:DCYCle:VALue......................213 [SENSe:]PMETer<p>:DCYCle[:STATe]......................212 [SENSe:]PMETer<p>:FREQuency........................ 213 [SENSe:]PMETer<p>:FREQuency:LINK....................... 213 [SENSe:]PMETer<p>:MTIMe.........................214 [SENSe:]PMETer<p>:MTIMe:AVERage:COUNt...................
  • Page 356 ® List of Remote Commands (AnalogDemod) R&S FSW-K7 CALCulate:LIMit<k>:CONTrol:SPACing......................324 CALCulate:LIMit<k>:CONTrol[:DATA]......................323 CALCulate:LIMit<k>:COPY..........................330 CALCulate:LIMit<k>:DELete..........................330 CALCulate:LIMit<k>:FAIL?..........................331 CALCulate:LIMit<k>:LOWer:MARGin......................325 CALCulate:LIMit<k>:LOWer:MODE.......................325 CALCulate:LIMit<k>:LOWer:OFFSet......................325 CALCulate:LIMit<k>:LOWer:SHIFt........................ 325 CALCulate:LIMit<k>:LOWer:SPACing......................326 CALCulate:LIMit<k>:LOWer:STATe......................326 CALCulate:LIMit<k>:LOWer:THReshold....................... 326 CALCulate:LIMit<k>:LOWer[:DATA]......................324 CALCulate:LIMit<k>:NAME........................... 326 CALCulate:LIMit<k>:STATe...........................330 CALCulate:LIMit<k>:TRACe<t>:CHECk......................331 CALCulate:LIMit<k>:UNIT..........................327 CALCulate:LIMit<k>:UPPer:MARGin......................327 CALCulate:LIMit<k>:UPPer:MODE....................... 327 CALCulate:LIMit<k>:UPPer:OFFSet......................328 CALCulate:LIMit<k>:UPPer:SHIFt......................... 328 CALCulate:LIMit<k>:UPPer:SPACing......................328 CALCulate:LIMit<k>:UPPer:STATe.......................
  • Page 357 ® List of Remote Commands (AnalogDemod) R&S FSW-K7 CALCulate<n>:DELTamarker<m>:FUNCtion:PNOise:RESult?..............321 CALCulate<n>:DELTamarker<m>:FUNCtion:PNOise[:STATe]..............321 CALCulate<n>:DELTamarker<m>:LINK......................303 CALCulate<n>:DELTamarker<m>:MAXimum:LEFT..................310 CALCulate<n>:DELTamarker<m>:MAXimum:NEXT..................311 CALCulate<n>:DELTamarker<m>:MAXimum:RIGHt..................311 CALCulate<n>:DELTamarker<m>:MAXimum[:PEAK]...................311 CALCulate<n>:DELTamarker<m>:MINimum:LEFT..................311 CALCulate<n>:DELTamarker<m>:MINimum:NEXT..................311 CALCulate<n>:DELTamarker<m>:MINimum:RIGHt..................312 CALCulate<n>:DELTamarker<m>:MINimum[:PEAK]..................311 CALCulate<n>:DELTamarker<m>:MREF......................304 CALCulate<n>:DELTamarker<m>:TRACe....................304 CALCulate<n>:DELTamarker<m>:X......................305 CALCulate<n>:DELTamarker<m>:X:RELative?....................305 CALCulate<n>:DELTamarker<m>:Y?......................305 CALCulate<n>:DELTamarker<m>[:STATe]....................304 CALCulate<n>:DELTamarker<m1>:LINK:TO:MARKer<m2>................ 303 CALCulate<n>:FEED.............................341 CALCulate<n>:MARKer:FUNCtion:ADEMod:AFRequency[:RESult]?............294 CALCulate<n>:MARKer:FUNCtion:ADEMod:SINad:RESult<t>?..............295 CALCulate<n>:MARKer:FUNCtion:ADEMod:THD:RESult<t>?..............295 CALCulate<n>:MARKer:PEXCursion......................
  • Page 358 ® List of Remote Commands (AnalogDemod) R&S FSW-K7 CALCulate<n>:PMETer<p>:RELative[:MAGNitude]:AUTO ONCE............... 211 CALCulate<n>:UNIT:POWer......................... 234 CALibration:AIQ:DCOFfset:I.......................... 200 CALibration:AIQ:DCOFfset:Q........................200 CALibration:PMETer<p>:ZERO:AUTO ONCE....................210 DIAGnostic:SERVice:NSOurce........................229 DISPlay:FORMat............................282 DISPlay:MTABle............................307 DISPlay[:WINDow<n>]:SIZE..........................283 DISPlay[:WINDow<n>]:TRACe:Y:SPACing....................239 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]....................238 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:AUTO ONCE................238 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:MODE..................238 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:RLEVel..................234 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:RLEVel:OFFSet................. 235 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:RPOSition.................. 239 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:RVALue..................225 DISPlay[:WINDow<n>]:TRACe:Y[:SCALe]:RVALue..................265 DISPlay[:WINDow<n>]:TRACe<t>:MODE.....................270 DISPlay[:WINDow<n>]:TRACe<t>:MODE:HCONtinuous................271 DISPlay[:WINDow<n>]:TRACe<t>:SELect....................
  • Page 359 ® List of Remote Commands (AnalogDemod) R&S FSW-K7 INPut:DIQ:SRATe:AUTO..........................206 INPut:EATT..............................236 INPut:EATT:AUTO............................236 INPut:EATT:STATe............................237 INPut:FILTer:HPASs[:STATe]........................183 INPut:FILTer:YIG[:STATe]..........................183 INPut:GAIN:STATe............................237 INPut:GAIN[:VALue]............................237 INPut:IMPedance............................183 INPut:IQ:BALanced[:STATe]......................... 198 INPut:IQ:FULLscale:AUTO..........................198 INPut:IQ:FULLscale[:LEVel].......................... 199 INPut:IQ:TYPE...............................199 INPut:SELect..............................184 INSTrument:CREate:DUPLicate........................176 INSTrument:CREate:REPLace........................177 INSTrument:CREate[:NEW]...........................176 INSTrument:DELete............................177 INSTrument:LIST?............................177 INSTrument:REName............................179 INSTrument[:SELect].............................179 LAYout:ADD[:WINDow]?..........................284 LAYout:CATalog[:WINDow]?.........................285 LAYout:IDENtify[:WINDow]?..........................285 LAYout:REMove[:WINDow]...........................
  • Page 360 ® List of Remote Commands (AnalogDemod) R&S FSW-K7 SOURce:EXTernal:FREQuency[:FACTor]:DENominator................220 SOURce:EXTernal:FREQuency[:FACTor]:NUMerator.................. 221 SOURce:EXTernal:POWer[:LEVel]....................... 222 SOURce:EXTernal:ROSCillator[:SOURce]....................223 SOURce:EXTernal[:STATe]...........................222 SOURce:POWer[:LEVel][:IMMediate]:OFFSet....................222 SYSTem:COMMunicate:GPIB:RDEVice:GENerator:ADDRess..............223 SYSTem:COMMunicate:RDEVice:GENerator:INTerface................223 SYSTem:COMMunicate:RDEVice:GENerator:LINK..................224 SYSTem:COMMunicate:RDEVice:GENerator:TYPE..................224 SYSTem:COMMunicate:RDEVice:PMETer:COUNt?..................209 SYSTem:COMMunicate:RDEVice:PMETer<p>:CONFigure:AUTO[:STATe]..........209 SYSTem:COMMunicate:RDEVice:PMETer<p>:DEFine................209 SYSTem:COMMunicate:TCPip:RDEVice:GENerator:ADDRess..............224 SYSTem:PRESet:CHANnel[:EXECute]......................179 SYSTem:SEQuencer.............................281 TRACe:IQ:APCon:A............................201 TRACe:IQ:APCon:B............................202 TRACe:IQ:APCon:RESult?..........................202 TRACe:IQ:APCon[:STATe]..........................201 TRACe<n>[:DATA]............................291 TRIGger[:SEQuence]:BBPower:HOLDoff......................245 TRIGger[:SEQuence]:DTIMe.........................

  • Page 361: Index

    ® Index R&S FSW-K7 Index Symbols Analog Baseband (B71) Full scale level ............92 *OPC ................244 I/Q mode ..............71 Input type (remote control) ........199 Analog Baseband connector RF input ..............34 A weighted filter Analog Baseband Interface (B71) AF filters ..............
  • Page 362 ® Index R&S FSW-K7 Averaging Connectors Traces (remote control) ..........275 AUX control, external generator ......... 37 External generator control .......... 37 GPIB ................37 Continue single sweep Band Softkey ..............105 Conversion loss table (B21) ........67 Continuous sweep External Mixer (B21, remote control) ......
  • Page 363 ® Index R&S FSW-K7 Demodulation Evaluation AF spectrum ............. 110 Data basis ..............15 Configuration (Softkey) ..........107 Methods ..............15 Display ..............106 Evaluation methods Filter types ............29, 102 Remote ..............284 Process ............... 26 Example RF spectrum ............. 112 Remote control of an external generator ....
  • Page 364 ® Index R&S FSW-K7 Serial number ............. 67 Frequency denominator Type .............. 60, 68, 191 External generator ............77 External reference Frequency numerator External generator ............38 External generator ............77 External generator control .......... 75 Frequency offset External trigger External generator ..........
  • Page 365 ® Index R&S FSW-K7 Creating ..............150 Data points ..............152 I/Q data Deactivating .............. 150 Export file binary data description ......351 Deleting ..............150 Export file parameter description ......348 Deleting values ............153 Exporting ..............157 Details ............... 150 Exporting (remote) ............
  • Page 366 ® Index R&S FSW-K7 Minimum (remote control) ......... 308 MSRA n dB down ..............145 Analysis interval ............240 n dB down (remote control) ........317 Operating mode ............48 Next minimum ............142 Restriction ..............277 Next minimum (remote control) ........ 308 MSRA applications Next peak ..............
  • Page 367 ® Index R&S FSW-K7 Overload Configuration (softkey) ..........81 External generator ............41 Continuous Value Update ........... 82 RF input ..............34 Duty cycle ..............84 RF input (remote) ............182 External power trigger ..........84 Overloading External trigger level ........... 84 External generator ............
  • Page 368 ® Index R&S FSW-K7 External generator ............42 Updating the display ..........105 Offset ..............87, 91 Updating the display (remote) ........279 Offset (Power sensor) ..........84 Reverse sweep Offset (softkey) ............. 87, 91 External generator ..........45, 77 Offset, displayed ............
  • Page 369 ® Index R&S FSW-K7 Mode (remote) ............280 Export ............... 157 Remote ..............278 Export config ............. 157 Settings External ............... 95 Displayed ..............53 FM (Offline) ..............97 File name ..............52 Free Run ..............95 Restoring files ............. 53 Frequency Config .............
  • Page 370 ® Index R&S FSW-K7 Standards Settings (remote control) .......... 270 Predefined ..............345 Settings, predefined ..........132 Presetting ..............52 Softkeys ..............132 see Digital standards ..........51 Traces to be Checked Statistics Limit lines ..............149 Programming example ........332, 333 Tracking Status bar see External generator ..........
  • Page 371 ® Index R&S FSW-K7 Multiple mode ............153 Multiple mode (remote) ........335, 336 Units ................120 Remote ..............334 Power sensor .............. 83 Restoring original display .......... 154 Reference level ..........86, 87, 91 Single mode .............. 153 Updating Single mode (remote) ..........

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