Page 1 ® R&S FSV-K70 Vector Signal Analysis Operating Manual (;ÚÙÜ2) 1176.7578.02 ─ 09...
Page 2 This manual describes the following R&S®FSV/FSVA options: ● R&S FSV-K70 (1310.8455.02) This manual describes the following R&S FSVA/FSV models with firmware version 3.30 and higher: ● ® R&S FSVA4 (1321.3008K05) ● ® R&S FSVA7 (1321.3008K08) ● R&S ® FSVA13 (1321.3008K14) ●...
Page 3: Table Of Contents
Signal Model, Estimation and Modulation Errors............ 50 3 Instrument Functions for Vector Signal Analysis......67 Measurement Result Display..................69 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70)..107 Configuring VSA Measurements................141 Further Information....................201 4 Remote Control Commands - R&S FSV-K70........204 Notation........................204...
Page 4 Contents R&S FSV-K70 4.14 TRACe subsystem....................325 4.15 TRIGger subsystem....................328 5 Status Reporting System (Option R&S FSV-K70)......332 STATus:QUEStionable Register................334 STATus:QUEStionable:SYNC<n> Register............335 STATus:QUEStionable:MODulation<n> Register..........335 STATus:QUESTionable:MODulation<n>:EVM Register........336 STATus:QUESTionable:MODulation<n>:PHASe Register........336 STATus:QUESTionable:MODulation<n>:MAGnitude Register......337 STATus:QUESTionable:MODulation<n>:CFRequency Register......337 STATus:QUESTionable:MODulation<n>:IQRHO Register........
Page 5: Preface
FSV-K70 Documentation Overview 1 Preface When equipped with application firmware R&S FSV-K70, the analyzer performs vector measurements on digitally modulated signals in the time domain. Based on the vector measurements, further evaluations, e.g. statistical evaluations, can be performed. This document contains all information required for operation of an R&S FSVA/FSV equipped with Application Firmware R&S FSV-K70.
Page 6 ® Preface R&S FSV-K70 Documentation Overview 1.1.3 Service Manual Describes the performance test for checking the rated specifications, module replace- ment and repair, firmware update, troubleshooting and fault elimination, and contains mechanical drawings and spare part lists. The service manual is available for registered users on the global Rohde & Schwarz information system (GLORIS, https://gloris.rohde-schwarz.com).
Page 7: Conventions Used In The Documentation
® Preface R&S FSV-K70 Conventions Used in the Documentation 1.2 Conventions Used in the Documentation 1.2.1 Typographical Conventions The following text markers are used throughout this documentation: Convention Description "Graphical user interface ele- All names of graphical user interface elements on the screen, such as ments"...
Page 8: How To Use The Help System
® Preface R&S FSV-K70 How to Use the Help System 1.3 How to Use the Help System Calling context-sensitive and general help ► To display the general help dialog box, press the HELP key on the front panel. The help dialog box "View" tab is displayed. A topic containing information about the current menu or the currently opened dialog box and its function is displayed.
Page 9: Notes For Users Of R&S Fsv 1307.9002Kxx Models
® Preface R&S FSV-K70 Notes for Users of R&S FSV 1307.9002Kxx Models 2. Enter the first characters of the topic you are interested in. The entries starting with these characters are displayed. 3. Change the focus by pressing the ENTER key.
Page 10: Brief Description Of Vector Signal Analysis
Block Diagram of Digital Signal Processing Hardware for I/Q Data 2 Brief Description of Vector Signal Analysis The "Vector Signal Analysis" software option R&S FSV-K70 performs vector and scalar measurements on digitally modulated single-carrier signals. To perform the measure- ments it converts RF signals into the complex baseband. It can also use the optional Digital Baseband interface (R&S FSV-B17 option) to analyze I/Q signals already deliv-...
Page 11: Filters And Bandwidths During Signal Processing
2.1.2 Block Diagram for Digital Baseband Input The following block diagram provides an overview on how digital baseband input is processed in the R&S FSV-K70 option. The digital baseband input requires option R&S FSV-B17. Figure 2-2: Block diagram of digital hardware for digital baseband input (B17) in vector signal analy- The digital I/Q data stream is fed into the analyzer via the connector of the digital base- band interface (R&S FSV-B17 option).
Page 12 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Filters and Bandwidths During Signal Processing Figure 2-3: Block diagram of bandwidth-relevant filters for vector signal analysis ● After the IF Filter (only for RF input operation): bandwidth = 40 MHz.
Page 13 The bandwidth extension option R&S FSV-B160 provides additional hardware, which makes a maximum usable I/Q bandwidth of 160 MHz possible. As opposed to the R&S FSVA/FSV base unit, the R&S FSV-K70 application uses a software resampler which allows for a maximum sample rate up to 1.28 GHz.
Page 14 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Filters and Bandwidths During Signal Processing Usage of the optional hardware can be deactivated, if necessary, for example to reduce possible spurious effects. 2.2.2.1 Restrictions The optional bandwidth extension R&S FSV-B160 can not be activated if any of the fol- lowing conditions apply: ●...
Page 15 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Filters and Bandwidths During Signal Processing In the baseband block diagrams (see Figure 2-4), the system-theoretical transmitter and analyzer filters are shown for PSK and QAM demodulation. For the sake of clear- ness, RF stages, IF filters and the filter stages of the digital hardware section are not shown.
Page 16 (i.e. not the instantaneous frequency or magnitude of the MSK signal). 2.2.5 Transmit filters The transmit filters required for common standards are provided by the R&S FSV-K70. Table 2-3: Overview of predefined Transmit filters Raised cosine...
Page 17 For FSK, the measurement filter filters the instantane- ous frequency of these signals. The R&S FSV-K70 defines the error signal as the difference between the reference signal and the measurement signal. Thus, the measurement filter also shapes the spectrum of the error signal, which is used to calculate the EVM, for example.
Page 18 Figure 2-4: Measurement filter in the block diagram (MSK, PSK, QAM and UserQAM) Figure 2-5: Modulator with Transmit filter in detail As the measurement filters of the R&S FSV-K70 have low-pass characteristics, they suppress high frequency distortion components in the Meas/Ref/Error signal. The errors are weighted spectrally.
Page 19 The analytical filter types RC (raised cosine), RRC (root-raised cosine) and GAUS- SIAN as well as the most important standard-specific filters are already integrated in the R&S FSV-K70. In addition, it is possible to use user-defined measurement and Transmit filters. Customized filters may be useful for the following purposes:...
Page 20 (search term "FILTWIZ"). Figure 2-6: FILTWIZ - filter tool for the R&S FSV-K70 It is possible to load customized transmit filters and customized measurement filters. If a customized transmit filter is selected, the internal receive filter coefficients are calcu- lated automatically on the fly.
Page 21: Symbol Mapping
® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping such that the intersymbol interference is low. Hence, you will probably be able to see a clear eye diagram and an Vector I/Q diagram with a recognizable constellation. How- ever, a filter that has low intersymbol interference might lead to noise enhancement, which is commonly undesirable for a measurement filter.
Page 22 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping The mappings for all standards used in the analyzer and for all employed modulation modes are described in the following. Unless characterized otherwise, symbol num- bers are specified in hexadecimal form (MSB at the left).
Page 23 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping Figure 2-9: Constellation diagram for QPSK (GRAY) including the symbol mapping Figure 2-10: Constellation diagram for QPSK (NATURAL) including the symbol mapping Figure 2-11: Constellation diagram for QPSK including the symbol mapping for WCDMA...
Page 24 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping 8PSK Figure 2-12: Constellation diagram for 8PSK (GRAY) including the symbol mapping Figure 2-13: Constellation diagram for 8PSK (NATURAL) including the symbol mapping Figure 2-14: Constellation diagram for 8PSK including the symbol mapping for DVB S2...
Page 25 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping 2.3.2 Rotating PSK A rotating PSK modulation is basically a PSK modulation in which additional phase shifts occur. These phase shifts depend on the symbol number, e.g. for a π/4-QPSK, the third symbol has an additional phase offset of (3-1)*π/4.
Page 26 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping π /8 rotation in I/Q plane if the symbol number "7" is transmitted Figure 2-16: I/Q symbol stream after 3 six times in a row π /4 QPSK including the symbol mapping for EDGE Figure 2-17: Constellation diagram for 3 π...
Page 27 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping 2.3.3 Differential PSK With differential PSK, the information is represented in the phase shift between two consecutive decision points. The absolute position of the complex sample value at the decision point does not carry information.
Page 28 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping Figure 2-20: Constellation diagram for D8PSK including the symbol mapping for APCO25, APCO25 Phase 2, GRAY, NATURAL and TETRA Table 2-6: D8PSK (NATURAL) Logical symbol mapping Modulation symbol (binary indica-...
Page 29 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping π /4 DQPSK including the symbol mapping for APCO25 Phase Figure 2-21: Constellation diagram for π /4 rotation is already compen- 2, NADC, NATURAL, PDC, PHS, TETRA and TFTS; the sated for π...
Page 30 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping Derivation of OQPSK Table 2-13: I/Q diagram and constellation diagram QPSK OQPSK (delayed Q component) Time Time [symbols] [symbols] PSK vector diagram with alpha = 0.35 OQPSK vector diagram with alpha = 0.35...
Page 31 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping OQPSK Figure 2-22: Constellation diagram for OQSK (GRAY) including the symbol mapping 2.3.6 Frequency Shift Keying (FSK) To illustrate symbol mappings for FSK modulations, the symbol numbers are marked in the logical mapping diagram versus the instantaneous frequency.
Page 32 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping Symbol Numbers -1/3 Figure 2-24: Constellation diagram for 4FSK (NATURAL) including the logical symbol mapping Symbol Numbers -1/3 Figure 2-25: Constellation diagram for 4FSK (GRAY) including the logical symbol mapping...
Page 33 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping 8FSK (NATURAL) Symbol Numbers -1/7 -3/7 -5/7 Figure 2-27: Constellation diagram for 8FSK (NATURAL) including the logical symbol mapping 16 FSK Figure 2-28: Constellation diagram for 16FSK including the logical symbol mapping...
Page 34 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping 2.3.7 Minimum Shift Keying (MSK) MSK modulation causes modulation-dependent phase shifts of +/- 90° which can be shown in an Constellation I/Q diagram. As with PSK, demodulation is performed by evaluation of the phase positions.
Page 35 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping output symbol {0;1} of differential encoder The logical symbol mapping is then performed on the XOR-coded bitstream d 2.3.8 Quadrature Amplitude Modulation (QAM) In the case of QAM the information is represented by the signal amplitude and phase.
Page 36 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping 0000 0001 0011 0010 0100 0101 0111 0110 1100 1101 1111 1110 1000 1001 1011 1010 Figure 2-31: Constellation diagram for 16QAM (GRAY) including the logical symbol mapping (hexa-...
Page 37 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping 10111 10011 00110 00010 10010 10101 10001 00100 00101 00111 10110 10100 10000 00000 00001 00011 11011 11001 11000 01000 01100 01110 11111 11101 11100 01001 01101 01010 11010...
Page 38 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping Figure 2-37: Constellation diagram for 256QAM including the logical symbol mapping (hexadecimal); the figure shows the upper right section of the diagram only 2.3.9 User QAM In the case of a User QAM modulation, the information can be represented by the sig- nal amplitude and/or the signal phase.
Page 39 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping γ Code Rate Modulation / coding spectral efficiency 3.32 2.70 3.55 2.60 9/10 3.59 2.57 32APSK Figure 2-39: Constellation diagram for 32APSK including the logical symbol mapping for DVB-S2 For DVB-S2 32APSK mappings, the ratio of the middle circle radius to the inner circle radius (γ...
Page 40 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping Figure 2-40: Constellation diagram for OOK 4ASK 4ASK is a 4-ary Amplitude Shift Keying mapping type. With this type of modulation, the information is solely represented by the absolute amplitude of the received signal at the decision points.
Page 41 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Symbol Mapping Figure 2-41: Constellation diagram for 4ASK Operating Manual 1176.7578.02 ─ 09...
Page 42: Demodulation Overview
® Brief Description of Vector Signal Analysis R&S FSV-K70 Demodulation Overview 2.4 Demodulation Overview Figure 2-42: Demodulation stages of the vector signal analysis option Operating Manual 1176.7578.02 ─ 09...
Page 43 IQ pattern. A list of all detected IQ patterns is passed on to the next processing stage. It is important to note that the R&S FSV-K70 option can only search for one pattern at a time.
Page 44 FSV-K70 Demodulation Overview Within this stage, the R&S FSV-K70 checks whether the pattern symbols (bits) really coincide with the symbol decisions at the pre-detected position. E.g. if one out of 20 symbols does not coincide, the "IQ Pattern Search" stage might detect this IQ pattern, but the "Pattern Symbol Check"...
Page 45 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Demodulation Overview age filter is applied. The length of this filter is automatically determined with the help of the user settings. The filtered power of the capture buffer is subsequently compared to an automatically chosen threshold and the rising and falling edges of bursts are identified.
Page 46 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Demodulation Overview Figure 2-44: Burst search algorithm 2.4.2 I/Q Pattern Search The I/Q pattern search is performed only if it is switched on. Otherwise, this stage is skipped. The main benefit of the I/Q pattern search is that it enables an alignment of the result range to the pattern.
Page 47 After timing and scaling recovery, a frequency offset and phase offset estimator is employed. After this coarse synchronization, the R&S FSV-K70 option makes symbol decisions, i.e. recovers which symbols were transmitted by the device under test (DUT). Typically, the employed estimators are "non-data-aided" (NDA) estimators. This means that they operate on an unknown data sequence.
Page 48 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Demodulation Overview Figure 2-45: Demodulation and Symbol Decision algorithm Operating Manual 1176.7578.02 ─ 09...
Page 49 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Demodulation Overview 2.4.4 Pattern Symbol Check This stage performs a bit-by-bit comparison between the selected pattern and the demodulated bits. It is important to note that this comparison is only performed at posi- tions that have been identified by the IQ pattern search as possible pattern positions.
Page 50: Signal Model, Estimation And Modulation Errors
Figure 2-46: Pattern Symbol Check algorithm 2.5 Signal Model, Estimation and Modulation Errors This section describes the signal and error models used within the R&S FSV-K70 VSA option. The estimation algorithms used to quantify specific modulation errors are then outlined. The chapter is divided into two parts: 2.5.1...
Page 51: Psk, Qam And Msk Modulation
® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors 2.5.2.1 Error Model........................62 2.5.2.2 Estimation........................63 2.5.2.3 Modulation Errors......................64 2.5.1 PSK, QAM and MSK Modulation 2.5.1.1 Error Model Figure 2-47: Modelling Modulation Errors The measured signal model for PSK, QAM and MSK modulation is depicted in...
Page 52: Estimation
2.5.1.2 Estimation The R&S FSV-K70 option includes two synchronization stages. The first stage has already been described in the context of the "Demodulation & Symbol Decisions" block (see Chapter 2.4.3, "Demodulation and Symbol Decisions",...
Page 53: Modulation Errors
® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors 2.5.1.3 Modulation Errors Error vector (EV) Figure 2-48: Modulation error: error vector The error vector is the difference between the measurement signal vector (Meas vec- tor) and the reference signal vector (Ref vector).
Page 54 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors Phase Error Figure 2-50: Modulation error: Phase error, error vector phase The phase error is the phase difference between the measurement vector and the ref- erence vector.
Page 55 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors I/Q Offset (Origin Offset) Figure 2-51: Effect of an I/Q or origin offset after demodulation and error compensation Figure 2-51 shows the effect of an I/Q offset in the transmitter.
Page 56 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors Note that the gain imbalance is not estimated (and cannot be compensated for) in a BPSK signal. Preconditions for Gain Imbalance and Quadrature Error measurements The distortions "gain imbalance"...
Page 57 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors are the gain of the inphase and the quadrature component and θ rep- where g and g resents the quadrature error. The I/Q imbalance can be compensated for if the corresponding option is selected in the demodulation settings.
Page 58 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors Gain Distortion Table 2-19: Effect of nonlinear amplitude distortions Nonlinear distortions: amplitude distortion (transmit- Amplitude distortion (analyzer) ter) Table 2-19 illustrates the effect of nonlinear amplitude distortions on a 64QAM sig- nal (only the 1st quadrant is shown).
Page 59 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors Phase Distortion Table 2-21: Effect of nonlinear phase distortions Nonlinear distortions: phase distortion (transmitter) Phase distortion (analyzer) Table 2-21 illustrates the effect of nonlinear phase distortions on a 64QAM signal (only the 1st quadrant is shown).
Page 60: Fsk Modulation
® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors Noise Figure 2-55: Additive noise Figure 2-55 shows a 64QAM signal (only the 1st quadrant is shown) with additive noise. The symbol decision thresholds are also shown.
Page 61          In the R&S FSV-K70 the frequency pulse filter is normalized such that         ± 1, ± 3, ..., ± (M-1)}, which implies . and the constellation for M FSK is assumed to be {...
Page 62 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors The GSM standard describes the transmission of binary data using MSK (i.e. 2FSK) modulation with a modulation index of h=1/2 at a symbol rate of 270.8333 KHz. The reference deviation is therefore given by: ...
Page 63 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors For the above phase model, an equivalent frequency distortion model may be expressed as:           ...
Page 64 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors operation is optionally (de-) activated based on the corresponding user settings (see "Measurement Filter" on page 174 ). For the estimation of the magnitude parameters, the following least-squares criterion is minimized: ...
Page 65 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors Figure 2-58: The reference and distorted instantaneous frequency of a GMSK signal with a carrier fre- quency drift FSK deviation error The FSK deviation error is the difference between the measured frequency deviation and the reference frequency deviation as entered by the user (see "FSK Ref Deviation"...
Page 66 ® Brief Description of Vector Signal Analysis R&S FSV-K70 Signal Model, Estimation and Modulation Errors Figure 2-59: The reference and measured instantaneous frequency of a GMSK signal with reference deviation error Operating Manual 1176.7578.02 ─ 09...
Page 67: Instrument Functions For Vector Signal Analysis
As of firmware version 1.60, I/Q data can be imported from a file for processing in R&S FSV-K70, and captured I/Q data can be stored to a file ("IQ Import"/"IQ Export" softkeys in the "Save/Rcl" menu). For details see the base unit description.
Page 68 3.1.6 Result Ranges and Evaluation Ranges..............103 3.1.7 Saving Measurement Results..................105 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70)..107 3.2.1 Softkeys of the VSA menu (R&S FSV-K70)..............107 3.2.2 Softkeys of the Frequency Menu (R&S FSV-K70) ............. 110 3.2.3...
Page 69: Measurement Result Display
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display 3.1 Measurement Result Display Various different result displays for VSA measurements are available. You select the display using the "Display Config" softkey in the "VSA" menu (see Chapter 3.3.1.6, "Display...
Page 70: Result Types
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display For certain result types it is not only possible to see the common "over time" repre- sentation of the measurement, but also the spectrum or the statistics (in form of a histogram).
Page 71: Magnitude Relative
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display with t=n·T and T =the duration of one sampling period at the sample rate defined by the display points per symbol parameter (see "Display Points/Sym" on page 179).
Page 72: Phase Wrap
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-2: Result display "Magnitude Relative" in normal mode SCPI commands: CALC:FEED 'XTIM:DDEM:MEAS' to define the required source type (see on page 247) CALCulate<n>:FEED CALC:FORM MAGN to define the result type (see on page 247) CALCulate<n>:FORMat...
Page 73: Phase Unwrap
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-3: Result display "Phase Wrap" in normal mode SCPI commands: CALC:FEED 'XTIM:DDEM:MEAS' to define the required source type (see on page 247) CALCulate<n>:FEED CALC:FORM PHASe to define the result type (see on page 247) CALCulate<n>:FORMat...
Page 74: Frequency Absolute
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-4: Result display "Phase Unwrap" in normal mode SCPI commands: CALC:FEED 'XTIM:DDEM:MEAS' to define the required source type (see on page 247) CALCulate<n>:FEED CALC:FORM UPHase to define the result type (see on page 247) CALCulate<n>:FORMat...
Page 75: Frequency Relative
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display When evaluating the capture buffer, the absolute frequency is derived from the mea- sured phase, with T =the duration of one sampling period at the sample rate defined by the capture oversampling parameter (see "Capture Oversampling"...
Page 76: Real/Imag (I/Q)
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display with t=n·T and T =the duration of one sampling period at the sample rate defined by the display points per symbol parameter (see "Display Points/Sym" on page 179).
Page 77: Eye Diagram Real (I)
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display The scaling of the capture buffer is ● relative to the current reference level if you are using the RF input and ● relative to the full scale level if you are using the I/Q input Available for source types: ●...
Page 78: Eye Diagram Imag (Q)
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-8: Result display "Eye Diagram Real (I)" in normal mode SCPI commands: CALC:FEED 'XTIM:DDEM:MEAS' to define the required source type (see on page 247) CALCulate<n>:FEED CALC:FORM IEYE...
Page 79: Eye Diagram Frequency
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-9: Result display "Eye Diagram Imag (Q)" in normal mode SCPI commands: CALC:FEED 'XTIM:DDEM:MEAS' to define the required source type (see on page 247) CALCulate<n>:FEED CALC:FORM QEYE...
Page 80: Constellation I/Q
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display to query the trace results (see on page 325) TRACe<n>[:DATA] 3.1.1.11 Constellation I/Q The complex source signal (without inter-symbol interference) as an X/Y plot; only the (de-rotated) symbol decision instants are drawn and not connected Available for source types: ●...
Page 81: Vector I/Q
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-10: Result display "Constellation I/Q (Rotated)" vs. common "Constellation I/Q" for 8PSK modulation SCPI commands: CALC:FEED 'XTIM:DDEM:MEAS' to define the required source type (see on page 247) CALCulate<n>:FEED...
Page 82: Constellation Frequency
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display QPSK SCPI commands: CALC:FEED 'XTIM:DDEM:MEAS' to define the required source type (see on page 247) CALCulate<n>:FEED CALC:FORM COMP to define the result type (see on page 247) CALCulate<n>:FORMat...
Page 83: Vector Frequency
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display to define the required source type (see on page 247) CALCulate<n>:FEED CALC:FORM CONF to define the result type (see on page 247) CALCulate<n>:FORMat TRAC:DATA TRACE1 to query the trace results (see on page 325) TRACe<n>[:DATA]...
Page 84: Error Vector Magnitude (Evm)
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Example: Figure 3-11: Result display for "Symbols" in binary mode If a pattern search is active, a found pattern is indicated in the symbol table, as well. SCPI commands:...
Page 85: Magnitude Error
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-12: Result display "Error Vector Magnitude" in normal mode Available for source types: ● Error Vector SCPI commands: CALC:FEED 'XTIM:DDEM:ERR:VECT' to define the required source type (see on page 247) CALCulate<n>:FEED...
Page 86: Phase Error
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-13: Result display "Magnitude Error" in normal mode Available for source types: ● Modulation Errors SCPI commands: CALC:FEED 'XTIM:DDEM:ERR:MPH' to define the required source type (see on page 247) CALCulate<n>:FEED...
Page 87: Frequency Error Absolute
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-14: Result display "Phase Error" in normal mode Available for source types: ● Modulation Errors SCPI commands: CALC:FEED 'XTIM:DDEM:ERR:MPH' to define the required source type (see on page 247) CALCulate<n>:FEED...
Page 88: Frequency Error Relative
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-15: Result display "Frequency Error Absolute" in normal mode Available for source types: ● Modulation Errors SCPI commands: CALC:FEED 'XTIM:DDEM:ERR:MPH' to define the required source type (see on page 247) CALCulate<n>:FEED...
Page 89: Result Summary
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-16: Result display "Frequency Error Relative" in normal mode Available for source types: ● Modulation Errors SCPI commands: CALC:FEED 'XTIM:DDEM:ERR:MPH' to define the required source type (see on page 247) CALCulate<n>:FEED...
Page 90 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display PSK, QAM and MSK modulation Figure 3-17: Result summary display for "Modulation Accuracy" If the result summary display is not given the entire screen width or height, only the information indicated by an *) below is displayed (see also Chapter 3.3.1.6, "Display...
Page 91 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display ● *) Rho SCPI command: CALCulate<n>:MARKer<m>:FUNCtion:DDEMod: on page 233 STATistic:RHO? ● *) I/Q Offset SCPI command: CALCulate<n>:MARKer<m>:FUNCtion:DDEMod: on page 231 STATistic:OOFFset? ● I/Q Imbalance Not for BPSK. SCPI command: CALCulate<n>:MARKer<m>:FUNCtion:DDEMod:...
Page 92 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display FSK modulation ● Frequency Error - RMS/Peak Shows the average (RMS) and peak frequency error in %. The frequency error is the difference of the measured frequency and the reference frequency.
Page 93 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display SCPI command: CALCulate<n>:MARKer<m>:FUNCtion:DDEMod: on page 230 STATistic:MPOWer? Basis of evaluation The majority of the values that are displayed in the Result Summary are calculated over the "Evaluation Range" (see "Evaluation Range"...
Page 94 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-18: Example for result summary with current EVM peak value marked If you want to compare the trace values to the results of the Result Summary, make sure to match the displayed points per symbol of the trace and of the Result Summary.
Page 95: Bit Error Rate (Ber)
BER = error bits / number of analyzed bits As a prerequisite for this measurement, the R&S FSV-K70 application must know which bit sequences are correct, i.e. which bit sequences may occur. This knowledge must be provided as a list of possible data sequences in xml format, which is loaded in the R&S FSV-K70 (see...
Page 96: Normal (Time/Symbol) Displays
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display The following information is provided in the BER result display (in full view): ● Bit Error Rate: error bits / number of analyzed bits ● Total # of Errors: number of detected bit errors (known data compared to symbol decisions) ●...
Page 97: Spectral Displays
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Source Type Result Type Phase Wrap Phase Unwrap Frequency Absolute Frequency Relative Real/Imag (I/Q) Eye Diagram Real (I) Eye Diagram Imag (Q) Eye Diagram Frequency Constellation I/Q Constellation I/Q (Rotated)
Page 98 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Table 3-4: Available spectral displays depending on source type Source Type Result Type Capture Buffer Magnitude Absolute Real/Imag (I/Q) Meas & Ref Signal Magnitude Absolute Magnitude Relative Phase Wrap...
Page 99 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-19: Spectrum diagram: Single-sided display for real input signals Operating Manual 1176.7578.02 ─ 09...
Page 100: Statistical Displays
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-20: Spectrum diagram: Two-sided display for complex input signals 3.1.4 Statistical Displays Statistical evaluations can be carried out for all result displays that show the time or symbols on the x-axis.
Page 101 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Source Type Result Type Phase Unwrap Frequency Absolute Frequency Relative Real/Imag (I/Q) Error Vector Real/Imag (I/Q) Modulation Errors Magnitude Error Phase Error Frequency Error Absolute Frequency Error Relative For complex displays (REAL/IMAG and Error REAL/IMAG), a separate statistics dia- gram is calculated for the real and imaginary parts.
Page 102: Displayed Measurement Settings
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-21: Error vector magnitude (bottom), EVM distribution (top) 3.1.5 Displayed Measurement Settings The channel bar above the result screens displays the most important measurement settings. Depending on the result type, the following information may be displayed in...
Page 103: Result Ranges And Evaluation Ranges
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Label Description Ref Level Reference level, see "Reference Level" on page 111 Offset Reference level offset, if defined, see "Ref Level Offset" on page 116 Attenuation, see Chapter 3.2.3, "Softkeys of the Amplitude Menu (R&S FSV- K70) ",...
Page 104 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Depending on the type of signal and your result range definition, the result ranges may be continuous or discrete. Bursted signals commonly have several discrete result ranges at the bursts, with intervals during the noise periods which should not be inclu- ded in the results.
Page 105: Saving Measurement Results
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display Figure 3-24: Evaluation lines in absolute magnitude diagram In symbol tables, the evaluated symbols are indicated by red square brackets. In other result displays that are based on the evaluation range only, two red vertical lines are displayed in the diagram header to indicate a limited evaluation basis.
Page 106 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Measurement Result Display 6. If you want the colors of your screenshot to be as they appear on the screen, select "Screen Colors (Hardcopy)". 7. Press the PRINT key again and then press the "Print Screen" softkey.
Page 107: Softkeys And Menu Overview For Vector Signal Analysis (R&S Fsv-K70)
:TRACe4? TRACe1 Query the result symbols in screen D. 3.2 Softkeys and Menu Overview for Vector Signal Analy- sis (R&S FSV-K70) This chapter describes the softkeys available for the R&S FSV-K70 option. ● Softkeys of the VSA menu (R&S FSV-K70)............107 ●...
Page 108 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) The following softkeys are available in the "VSA" and "MEAS" menus: Settings Overview....................... 108 Digital Standards......................108 └ Load Standard....................108 └...
Page 109 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Delete Standard ← Digital Standards Deletes the selected standard. Standards predefined by Rohde & Schwarz can also be deleted. A confirmation query is displayed to avoid unintentional deletion of the stan- dard.
Page 110 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) 3.2.2 Softkeys of the Frequency Menu (R&S FSV-K70) The FREQ key opens the "RF Settings" tab of the "Frontend & I/Q Capture Settings"...
Page 111 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) └ X-Axis Quantize.................... 112 └ X-Axis Reference Value................112 └ X-Axis Range....................112 └ y-Axis Max Value..................113 └ y-Axis Min Value................... 113 └...
Page 112 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Y-Axis Reference Value ← Ranges Opens an edit dialog field to define a reference value for the y-axis in the current unit.
Page 113 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) y-Axis Max Value ← Ranges (statistic measurements) Opens an edit dialog box to define the upper limit of the displayed probability range.
Page 114 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Hexadecimal ← Ranges (Symbol Table) Sets the symbol display to hexadecimal mode. This setting also affects the number of symbols displayed in each row.
Page 115 R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Note: As of firmware version 1.61, the maximum mixer level allowed is 0 dBm. Mixer levels above this value may lead to incorrect measurement results, which are indicated by the "OVLD"...
Page 116 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) To re-open the edit dialog box for manual value definition, select the "Man" mode again. If the defined reference level cannot be set for the given RF attenuation, the reference level is adjusted accordingly and the warning "Limit reached"...
Page 117 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) └ Upper Level Hysteresis.................117 └ Lower Level Hysteresis.................117 Y-Axis Autorange......................117 Y-Axis Auto Range All Screens...................118 Auto Level Defines the optimal reference level for the current measurement automatically.
Page 118 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) To adapt the range of all screens together, use the Y-Axis Auto Range All Screens function. For more information, see ●...
Page 119 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Refresh Repeats the evaluation of the data currently in the capture buffer without capturing new data. This is useful after changing settings, for example filters, patterns or evaluation ranges.
Page 120 R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) By default, the R&S FSVA/FSV shows the results over all result ranges that have been captured in the data capturing process and are in the R&S FSVA/FSV's memory. By selecting a range number, you can analyze a specific result range, e.g.
Page 121 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Remote command: on page 260 DISPlay[:WINDow<n>]:TRACe<t>[:STATe] Clear Write ← Trace 1/Trace 2/Trace 3/Trace 4/Trace 5/Trace 6 Overwrite mode: the trace is overwritten by each sweep. This is the default setting.
Page 122 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) the displayed trace no longer matches the current instrument setting is indicated by the icon on the tab label. If the level range or reference level is changed, the R&S FSVA/FSV automatically adapts the measured data to the changed display range.
Page 123 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) ● Clear Write ● Max Hold ● Min Hold ● Average ● View ● Blank For details see Chapter 3.4.1, "Trace Mode Overview",...
Page 124 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) ● "Header" Includes a header with scaling information etc. ● "Decimal Separator" Defines the separator for decimal values as point or comma...
Page 125 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) ● RBW ≤ 500 kHz: 6 MHz, nominal FFT mode: ● RBW > 20 kHz: 40 MHz, nominal ● RBW ≤ 20 kHz: 6 MHz, nominal Note: Be aware that in auto sweep type mode, due to a possible change in sweep types, the bandwidth may vary considerably for the same RBW setting.
Page 126 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) offset > 0: Start of the sweep is delayed offset < 0: Sweep starts earlier (pre-trigger) Only possible for span = 0 (e.g. I/Q Analyzer mode) and gated trigger...
Page 127 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) The signal description of the expected input signal determines the available configura- tion settings and the available burst or pattern settings. You can define a pattern to which the result range can be aligned (see "Pattern"...
Page 128 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) For details on the available settings see "Result Range" on page 165 and "Evaluation Range" on page 167 Demod/ Meas Filter Displays the "Demodulation &...
Page 129 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Remote command: on page 238 CALCulate<n>:MARKer<m>[:STATe] on page 211 CALCulate<n>:DELTamarker<m>[:STATe] Couple Screens (On/Off) Markers in all diagrams with the same (time or symbols) x-axis have coupled x-values (except for capture buffer display), i.e.
Page 130 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Marker to Trace Opens an edit dialog box to enter the number of the trace on which the marker is to be placed.
Page 131 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Move Marker to Trace ← Select Mkr and Trace Moves the marker selected under Marker to the trace selected here. The marker changes to the selected trace, but remains on the previous symbol.
Page 132 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Max |Peak| Sets the active marker/delta marker to the largest absolute peak value (maximum or minimum) of the selected trace. Remote command: on page 235 CALCulate<n>:MARKer<m>:MAXimum:APEak...
Page 133 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) If you position the lines at the left and right edges of the eye, the relative line value rep- resents the width of the eye (see also Chapter 3.3.9, "Measuring the Size of an...
Page 134 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Note: The dialog box differs depending on the modulation type. For FSK modulation, different result types are available. For details on configuring limits see Chapter 3.3.8, "Working with Limits for Modulation...
Page 135 Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Limit Value ← Current/Mean/Peak ← Config ModAcc Limits Define the limit with which the currently measured, mean or peak value is to be com- pared.
Page 136: Signal Source
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) 3.2.12 Softkeys of the Input/Output menu (R&S FSV-K70) The INPUT/OUTPUT key displays the "In-/Output" menu, which contains the following softkeys. Signal Source......................136...
Page 137: Full Scale Level
Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Full Scale Level ← Signal Source The "Full Scale Level" defines the level that should correspond to an I/Q sample with the magnitude "1".
Page 138: Firmware Update
Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) Firmware Update ← EXIQ If a firmware update for the R&S EX-IQ-BOX is delivered with the R&S FSVA/FSV firm- ware, this function is available. In this case, when you select the softkey, the firmware update is performed.
Page 139: Digital Iq Info
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) This function is not available for input from the R&S Digital I/Q Interface (option R&S FSV-B17). Remote command: on page 271...
Page 140 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Softkeys and Menu Overview for Vector Signal Analysis (R&S FSV-K70) └ ASCII Trace Export..................140 └ Export.......................140 └ R&S Support....................140 Export Opens a dialog box to configure exports of trace data.
Page 141: Configuring Vsa Measurements
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Thus, you don't have to navigate through various softkey levels or dialog boxes to quickly change a setting. There are two ways to access the context menus: ●...
Page 142 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements To reset the instrument to the default settings of the default standard, click "Set to Default". ● Modulation and Signal Description Settings............142 ● Frontend and I/Q Capture Settings............... 149 ●...
Page 143 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Modulation The "Modulation" tab of the "Modulation & Signal Description" dialog box contains modulation and Transmit filter settings. A live preview of the Constellation I/Qtrace using the currently defined settings is displayed at the bottom of the dialog box to visu- alize the changes to the settings.
Page 144 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Modulation Order Depending on the Modulation Type, various orders of modulation are available: Type Available orders BPSK QPSK Offset QPSK DQPSK 3Pi/4-QPSK Pi/4-DQPSK 8PSK D8PSK 3Pi/8-8PSK Pi/8-D8PSK Pi/4-QPSK...
Page 145 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements on page 298 [SENSe:]DDEMod:QAM:FORMat on page 287 [SENSe:]DDEMod:FSK:NSTate FSK Ref Deviation The FSK Reference Deviation sets the deviation to the reference frequency. In case of 2FSK, it indicates the distance from the reference frequency to the positive / negative deviation frequency and in case of 4FSK, the distance to the outer positive/ negative deviation frequency.
Page 146 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements For details see Chapter 2.2.7, "Customized Filters", on page 19. Remote command: on page 314 [SENSe:]DDEMod:TFILter:NAME Alpha/BT Defines the roll-off factor (Alpha) or the filter bandwidth (BT). The roll-off factor and filter bandwidth for Transmit filter is available for RC, RRC, Gauss and GMSK filter.
Page 147 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Continuous Signal / Burst Signal.................147 Pattern.........................147 Pattern Settings......................147 Offset...........................148 Continuous Signal / Burst Signal Determines whether the signal is continuous or contains bursts. For bursts, further set- tings are available.
Page 148 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Offset The offset of the pattern is defined with respect to the start of the useful part of the burst (see also the note in "Continuous Signal / Burst Signal"...
Page 149 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Known Data Activates or deactivates the use of the loaded data file (if available). When deactivated, the additional information from the previously loaded data file is removed. Any referen- ces to the known data in the "Demodulation"...
Page 150: Frequency
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Frequency........................150 Reference Level......................150 Ref Level Offset......................151 Preamp On/Off......................151 Input Coupling......................151 (Bypassing the )YIG Filter................... 151 Attenuation Mode......................152 Attenuation......................152 El Attenuation ON/OFF....................152 Frequency Defines the center frequency.
Page 151: Ref Level Offset
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements The reference level value is the maximum value the AD converter can handle without distortion of the measured value. Signal levels above this value will not be measured correctly, which is indicated by the "IFOVL"...
Page 152: Attenuation Mode
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Attenuation Mode Toggles the attunuation mode. In automatic mode, the RF attenuation is automatically set as a function of the selected reference level. This ensures that the optimum RF attenuation is always used.
Page 153 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Capture oversampling Max. symbol rate 0.78125 MHz 0.390625 MHz A live preview of the signal in the capture buffer with the current settings is displayed in the preview area at the bottom of the dialog box. The preview area is not editable directly.
Page 154: Capture Length Auto
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Capture Length Auto Defines the Capture Length automatically according to the burst and pattern length set- tings and the statistics count (see "Signal Description" on page 146). Thus, a minimal Capture Length is used, which improves performance.
Page 155: Usable I/Q Bandwidth
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Note that this is a read only field. Usable I/Q Bandwidth Shows the usable I/Q bandwidth. Note that this is a read only field. Maximum Bandwidth Defines the maximum bandwidth to be used by the R&S FSVA/FSV for I/Q data acqui- sition This function is only available if the bandwidth extension option R&S FSV-B160 is...
Page 156: Trigger Offset
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements "External" Defines triggering via a TTL signal at the "EXT TRIG/GATE IN" input connector on the rear panel. "IF Power" Defines triggering of the measurement using the second intermediate frequency.
Page 157: Trigger Level
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements In the "External" or "IF Power" trigger mode, a common input signal is used for both trigger and gate. Therefore, changes to the gate delay will affect the trigger delay (trig- ger offset) as well.
Page 158 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements 3.3.1.3 Burst and Pattern Search Settings You configure burst and pattern searches in the "Burst & Pattern Settings" dialog. This dialog box contains the following tabs: ● Burst Search ●...
Page 159 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Auto/On/Off......................... 159 Meas only if burst was found..................159 Auto Configuration...................... 159 └ Search Tolerance..................159 └ Min Gap Length.................... 159 Auto/On/Off Enables or disables burst searches. If "Auto" is selected, burst search is enabled only if "Bursted Signal"...
Page 160 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Remote command: on page 301 [SENSe:]DDEMod:SEARch:BURSt:GLENgth[:MINimum] Pattern Search The "Pattern Search" tab contains the settings for pattern searches. In addition, it con- tains a link to the "Signal Description" settings (see "Signal Description"...
Page 161: Auto/On/Off
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements └ Edit........................163 └ New.......................163 └ Delete......................163 Auto/On/Off Enables or disables pattern searches. If "Auto" is selected, pattern search is enabled automatically if "Pattern" is selected in the "Signal Description" tab of the "Modulation &...
Page 162: Advanced Settings
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Advanced Settings The "Advanced Pattern Settings" dialog box lists the patterns assigned to the currently selected standard. You can add existing patterns to the standard, remove patterns already assigned to the standard, edit existing or define new patterns. For details on managing standard patterns, see Chapter 3.3.6, "Managing...
Page 163: Meas Only If Pattern Symbols Correct
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Meas only if pattern symbols correct ← Advanced Settings If enabled, measurement results are only displayed (and averaged) if a valid pattern has been found. For measurements of signals with patterns that are averaged over several sweeps, this option should be enabled so that erroneous measurements do not affect the result of averaging.
Page 164 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Pattern Definition The settings in the "Pattern" dialog box define the pattern. Figure 3-27: Pattern definition For details on defining a pattern, see Example "Defining a pattern" on page 192.
Page 165 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Mod. order The order of modulation, e.g. 8 for an 8-PSK. Remote command: on page 309 [SENSe:]DDEMod:SEARch:SYNC:NSTate Symbol format Hexadecimal, decimal or binary format Symbols Pattern definition, consisting of one or more symbols...
Page 166 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Figure 3-28: Result Range Alignment Result Length......................166 Reference........................166 Alignment........................167 Offset...........................167 Symbol Number at <Reference> start.................167 Result Length Defines the number of symbols that are to be demodulated. All traces over time are displayed over the result range.
Page 167 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Remote command: on page 255 CALCulate<n>:TRACe<t>:ADJust[:VALue] Alignment Defines the type of alignment of the result range to the reference source. The result of the current setting is displayed in the visualization area of the dialog box.
Page 168 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Entire Result Range....................168 Start..........................168 Stop..........................168 Entire Result Range If enabled, the entire result range is evaluated. Remote command: on page 246 CALCulate<n>:ELIN<startstop>:STATe Start Defines the symbol in the result range at which evaluation is started. The start symbol itself is included in the evaluation range.
Page 169 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements 3.3.1.5 Demodulation and Measurement Filter Settings You configure the demodulation and measurement filter settings in the "Demodulation & Measurement Filter" dialog box. This dialog box contains the following tabs: ●...
Page 170 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements For FSK modulation, the dialog has slightly different options. Compensate for......................170 Normalize EVM to....................... 171 Offset EVM........................171 Estimation Points/Sym....................172 Coarse Synchronization....................172 Fine Synchronization....................173 If SER ≤........................173 Compensate for...
Page 171 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Example: The following figures compare the results for a compensated I/Q offset of 2.5% and a non-compensated offset. I/Q Offset compensated for I/Q Offset NOT compensated for Remote command:...
Page 172 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Unlike QPSK modulation, the Q component of Offset QPSK modulation is delayed by half a symbol period against the I component in the time domain. The symbol time instants of the I and the Q component therefore do not coincide.
Page 173 FSV-K70 Configuring VSA Measurements Note: In previous versions of the R&S FSV-K70 application this setting was referred to as "Use Pattern For Sync". The former setting "True" corresponds to the new setting "Pattern". The former setting "False" corresponds to the new setting "Data".
Page 174 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Remote command: on page 288 [SENSe:]DDEMod:FSYNc:LEVel Measurement Filter The "Measurement Filter" tab contains the settings for the measurement filter. In addi- tion, a link to the "Modulation Settings" tab of the "Modulation and Signal Description Settings"...
Page 175 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Auto The measurement filter is defined automatically depending on the Transmit filter speci- fied in the "Modulation" tab of the "Modulation & Signal Description" dialog box (see "Transmit filter Type"...
Page 176: Screen X Active
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements The "Display Configuration" tab is also displayed when you select the MEAS key. Screen A-D For each of the four available screens you can configure what is to be displayed.
Page 177: Source
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Not all measurements support this function. Remote command: on page 260 DISPlay[:WINDow<n>]:TRACe<t>:SYMBol Source You can choose which signal source is to be displayed from the following options: Source...
Page 178: Result Type Transformation
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Source Type Result Type Real/Imag (I/Q) Eye Diagram Real (I) Eye Diagram Imag (Q) Eye Diagram Frequency Constellation I/Q Vector I/Q Constellation Frequency Vector Frequency Symbols Binary Octal...
Page 179: Display Points/Sym
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements "Statistics" X-axis displays former y-values. Y-axis displays statistical informa- tion: ● Trace 1: the probability of occurrence of a certain value is plotted against the value ● Trace 2: the cumulated probability of occurance is plotted against the value.
Page 180: Oversampling
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Remote command: on page 258 DISPlay[:WINDow<n>]:PRATe[:VALue] on page 258 DISPlay[:WINDow<n>]:PRATe:AUTO Oversampling Defines the sample basis for statistical evaluation. This setting is only available for the Result Type Transformation "Statistics".
Page 181 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Predefined You can store and load predefined screen configurations. All available configurations are displayed in the "Predefined" tab. The current screen configuration is indicated under "Current" at the top of the list.
Page 182 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements You configure the result range and evaluation range settings in the "Result Range and Evaluation Range" dialog box in the "Settings Overview" (see also Chapter 3.3.1.4, "Result Range and Evaluation Range Settings",...
Page 183 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Example: Defining the result range Figure 3-31: Example: Defining the Result Range Figure 3-31, a result range will be defined for the first 100 symbols of the capture...
Page 184 Scaling functions are located in the "Ranges" submenu of the "Amplitude" menu (see Chapter 3.2.3, "Soft- keys of the Amplitude Menu (R&S FSV-K70) ", on page 110). 3.3.3.1...
Page 185 1. Focus the result screen. 2. Select "AMPT > Ranges > Y-Axis Autorange" (see Chapter 3.2.3, "Softkeys of the Amplitude Menu (R&S FSV-K70) ", on page 110). The y-axis is adapted to display the current results optimally (only once, not dynamically).
Page 186 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements To define the number of bars 1. Focus the result screen. 2. Select "AMPT > Ranges > X-Axis Quantize" (see "X-Axis Quantize" on page 112). 3. Enter the number of bars to be displayed.
Page 187 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements 2. Select "AMPT > Ranges > Adjust Settings" (see "Adjust Settings" on page 113). The x-axis is adapted to display the current results optimally (only once, not dynamically).
Page 188 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements 3. Press the "Select" button. The dialog box is closed and the instrument is adjusted to the stored settings for the selected standard. To store settings as a standard file...
Page 189 They are used in many digital mobile radio systems to evaluate the channel impulse response and to facilitate a demodulation in the receiver. The pattern search is performed on the I/Q capture buffer. The R&S FSV-K70 takes the symbol numbers of the pattern, modulates the pattern according to the Transmit fil- ter and the modulation and, subsequently, searches the I/Q capture buffer for this I/Q pattern.
Page 190 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements To select a predefined pattern for a search This task can also be performed by remote control, see [SENSe:]DDEMod:SEARch: on page 306 and SYNC:CATalog [SENSe:]DDEMod:SEARch:SYNC:SELect on page 310.
Page 191 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements 3.3.6 Managing patterns The available patterns and those assigned to the current standard are listed in the "Pattern Settings" dialog box. In addition, details for the currently focussed pattern are displayed in the upper right-hand part of the dialog box.
Page 192 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements To define the pattern, proceed as follows: a) If necessary, add a new symbol field by pressing "Add". b) Select the symbol field you want to define. c) Enter a value using the keyboard. Depending on the "Modulation Order", the value can be in the range 0 to n-1, where n is the "Modulation Order", e.g.
Page 193 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements This task can also be performed by remote control. Example: SENS:DDEM:SEAR:SYNC:NAME 'TETRA_SA', see [SENSe:]DDEMod:SEARch: on page 309 SYNC:NAME SENS:DDEM:SEAR:SYNC:NST 4, see [SENSe:]DDEMod:SEARch:SYNC:NSTate on page 309 SENS:DDEM:SEAR:SYNC:DATA '00030001000000000003000200020001000300010001', see...
Page 194 As of firmware version R&S FSVA/FSV 1.70, you can load xml files containing the pos- sible sequences to the R&S FSV-K70 application and use them to compare the mea- sured data to. In particular, you can use known data for the following functions: ●...
Page 195 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements When you align the result range to a bursted signal, due to the uncertainty of the burst search, the determined result range might start up to 2 symbols before or after the actual burst.
Page 196 R&S FSV-K70 Configuring VSA Measurements Before loading the file to the R&S FSV-K70 application, make sure the syntax of your file is valid. Auxiliary tool to create Known Data files An auxiliary tool to create Known Data files from data that is already available in the R&S FSV-K70 application is provided on the instrument free of charge.
Page 197 Otherwise, reset the tool to start a new recording, possibly after changing the demodulation settings or input data. 7. Close the tool window to return to normal operation of the R&S FSV-K70 applica- tion. The created xml file can now be loaded in the R&S FSV-K70 application as described Chapter 3.3.7.2, "How to Load Known Data...
Page 198 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements Syntax Possible Values Description <Data></Data> One character per symbol One possible sequence of symbols that can be demodulated in the sequence from the input signal Possible characters are: Up to 6000 different sequences, i.e.
Page 199 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements 241 264 773 111 337 446 514 600 67 </Data> </RS_VSA_KNOWN_DATA_FILE> 3.3.8 Working with Limits for Modulation Accuracy Measurements The results of a modulation accuracy measurement can be checked for violation of defined limits automatically.
Page 200 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Configuring VSA Measurements 9. Select the "Limit Checking On" option, or press the "ModAcc Limits On" softkey in the "Limits" menu. The limit check is performed immediately on the current modulation accuracy mea- surement results and for all subsequent measurements until it is deactivated.
Page 201: Further Information
® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Further Information Figure 3-35: Size of an eye, calculated using display lines 3.4 Further Information 3.4.1 Trace Mode Overview....................201 3.4.2 ASCII File Export Format for VSA Data..............203 3.4.1 Trace Mode Overview The traces can be activated individually for a measurement or frozen after completion of a measurement.
Page 202 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Further Information This mode is especially useful with modulated or pulsed signals. The signal spectrum is filled up upon each sweep until all signal components are detected in a kind of enve- lope.
Page 203 ® Instrument Functions for Vector Signal Analysis R&S FSV-K70 Further Information 3.4.2 ASCII File Export Format for VSA Data 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>"...
Page 204: Remote Control Commands - R&S Fsv-K70
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 Notation 4 Remote Control Commands - R&S FSV- This chapter lists and describes all remote control commands specific to this software application. For further information on analyzer or basic settings commands, refer to the corre- sponding subsystem in the base unit description.
Page 205 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 Notation Individual Description The individual description contains the complete notation of the command. An example for each command, the *RST value and the SCPI information are included as well. The options and operating modes for which a command can be used are indicated by...
Page 206 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 Notation Special Characters A selection of key words with an identical effect exists for several commands. These keywords are indicated in the same line; they are separated by a vertical stroke. Only one of these key- words needs to be included in the header of the command.
Page 207: Abort Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem ● MINimum: This keyword sets the parameter to the smallest possible value. ● DEFault: This keyword is used to reset the parameter to its default value. ● UP: This keyword increments the parameter value.
Page 208 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem ............210 CALCulate<n>:DELTamarker<m>:MINimum:LEFT ............210 CALCulate<n>:DELTamarker<m>:MINimum:NEXT ............211 CALCulate<n>:DELTamarker<m>:MINimum[:PEAK] ............211 CALCulate<n>:DELTamarker<m>:MINimum:RIGHt ...............211 CALCulate<n>:DELTamarker<m>[:STATe] ................ 212 CALCulate<n>:DELTamarker<m>:TRACe ................212 CALCulate<n>:DELTamarker<m>:X ..............212 CALCulate<n>:DELTamarker<m>:X:ABSolute? ..............213 CALCulate<n>:DELTamarker<m>:X:RELative? ................213 CALCulate<n>:DELTamarker<m>:Y? CALCulate<n>:DELTamarker<m>:AOFF This command turns all active delta markers off.
Page 209 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Mode: CALCulate<n>:DELTamarker<m>:MAXimum:LEFT This command positions the delta marker to the next smaller trace maximum on the left of the current value (i.e. descending X values). The corresponding delta marker is acti- vated first, if necessary.
Page 210 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:DELTamarker<m>:MAXimum:RIGHt This command positions the delta marker to the next smaller trace maximum on the right of the current value (i.e. ascending X values). The corresponding delta marker is activated first, if necessary.
Page 211 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:DELTamarker<m>:MINimum[:PEAK] This command positions the delta marker to the current trace minimum. The corre- sponding delta marker is activated first, if necessary. Suffix: <n> Selects the measurement window. <m>...
Page 212 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:DELTamarker<m>:TRACe <TraceNumber> This command selects the trace a delta marker is positioned on. The corresponding trace must have a trace mode other than "Blank". Suffix: <n> Selects the measurement window.
Page 213: Calculate:limit:maccuracy Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:DELTamarker<m>:X:RELative? This command queries the x-value of the selected delta marker relative to marker 1 or to the reference position (for CALC:DELT:FUNC:FIX:STAT ON). The command acti- vates the corresponding delta marker, if necessary.
Page 214 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem ..........217 CALCulate<n>:LIMit:MACCuracy:CFERror:CURRent:VALue ..........217 CALCulate<n>:LIMit:MACCuracy:CFERror:MEAN:VALue ...........217 CALCulate<n>:LIMit:MACCuracy:CFERror:PEAK:VALue ...........218 CALCulate<n>:LIMit:MACCuracy:EVM:PCURrent:VALue ............218 CALCulate<n>:LIMit:MACCuracy:EVM:PMEan:VALue ............218 CALCulate<n>:LIMit:MACCuracy:EVM:PPEak:VALue ..........218 CALCulate<n>:LIMit:MACCuracy:EVM:RCURrent:VALue ............218 CALCulate<n>:LIMit:MACCuracy:EVM:RMEan:VALue ............218 CALCulate<n>:LIMit:MACCuracy:EVM:RPEak:VALue ..........218 CALCulate<n>:LIMit:MACCuracy:FDERror:CURRent:VALue ..........218 CALCulate<n>:LIMit:MACCuracy:FDERror:MEAN:VALue ...........218 CALCulate<n>:LIMit:MACCuracy:FDERror:PEAK:VALue...
Page 215 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:LIMit:MACCuracy:STATe <LimitState> Suffix: <n> 1..4 Setting parameters: <LimitState> ON | OFF *RST: Mode: Manual operation: "ModAcc Limits" on page 133 "Limit Checking" on page 134 CALCulate<n>:LIMit:MACCuracy:<ResultType>:<LimitType>:STATe <LimitState> This command switches the limit check for the selected result type and limit type on or off.
Page 216 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Example: CALC2:FEED 'XTIM:DDEM:MACC' switch on result summary in screen 2 CALC2:LIM:MACC:CFER:CURR:VAL 100 Hz define a limit of [-100;100] CALC2:LIM:MACC:CFER:CURR:STAT ON switch limit check ON Mode: Manual operation: "Check" on page 135 CALCulate<n>:LIMit:MACCuracy:<ResultType>:<LimitType>[:RESUlt]?
Page 217 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Query parameters: <LimitResult> NONE | PASS | FAIL | MARGIN NONE No limit check result available yet. PASS All values have passed the limit check. FAIL At least one value has exceeded the limit.
Page 218 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:LIMit:MACCuracy:EVM:PCURrent:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:EVM:PMEan:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:EVM:PPEak:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:EVM:RCURrent:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:EVM:RMEan:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:EVM:RPEak:VALue <LimitValue> This command defines the value for the current, peak or mean EVM (peak or RMS) limit. Note that the limits for the current and the peak value are always kept identical.
Page 219 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:LIMit:MACCuracy:FERRor:PCURrent:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:FERRor:PMEan:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:FERRor:PPEak:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:FERRor:RCURrent:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:FERRor:RMEan:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:FERRor:RPEak:VALue <LimitValue> This command defines the value for the current, peak or mean frequency error (peak or RMS) limit. Note that the limits for the current and the peak value are always kept identical.
Page 220 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Example: CALC2:FEED 'XTIM:DDEM:MACC' switch on result summary in screen 2 CALC2:LIM:MACC:MERR:RPE:VAL 2.4% define a limit of 2.4% Mode: CALCulate<n>:LIMit:MACCuracy:OOFFset:CURRent:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:OOFFset:MEAN:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:OOFFset:PEAK:VALue <LimitValue> This command defines the upper limit for the current, peak or mean I/Q offset. Note that the limits for the current and the peak value are always kept identical.
Page 221: Calculate:marker Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Example: CALC2:FEED 'XTIM:DDEM:MACC' switch on result summary in screen 2 CALC2:LIM:MACC:PERR:RPE:VAL 1.9deg define a limit of 1.9 deg Mode: CALCulate<n>:LIMit:MACCuracy:RHO:CURRent:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:RHO:MEAN:VALue <LimitValue> CALCulate<n>:LIMit:MACCuracy:RHO:PEAK:VALue <LimitValue> This command defines the lower limit for the current, peak or mean Rho limit. Note that the limits for the current and the peak value are always kept identical.
Page 222 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem ........234 CALCulate<n>:MARKer<m>:FUNCtion:DDEMod:STATistic:SNR? ................... 234 CALCulate<n>:MARKer<m>:LINK ..............235 CALCulate<n>:MARKer<m>:MAXimum:APEak ..............235 CALCulate<n>:MARKer<m>:MAXimum:LEFT ..............235 CALCulate<n>:MARKer<m>:MAXimum:NEXT ..............236 CALCulate<n>:MARKer<m>:MAXimum:RIGHt ..............236 CALCulate<n>:MARKer<m>:MAXimum[:PEAK] ..............237 CALCulate<n>:MARKer<m>:MINimum:LEFT ..............237 CALCulate<n>:MARKer<m>:MINimum:NEXT ..............237 CALCulate<n>:MARKer<m>:MINimum[:PEAK] ..............238 CALCulate<n>:MARKer<m>:MINimum:RIGHt ................238 CALCulate<n>:MARKer<m>:SEARch...
Page 223 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Query parameters: <type> <none> Amplitude droop in dB/symbol (for current sweep) Amplitude droop in dB/symbol, evaluating the linear average value over several sweeps Peak value for amplitude droop over several sweeps...
Page 224 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Query parameters: <type> <none> Carrier frequency error for current sweep Average carrier frequency error (over several sweeps) Peak carrier frequency error (over several sweeps) SDEV Standard deviation of frequency error...
Page 225 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Query parameters: <type> <none> Average EVM value of current sweep RMS average EVM value (over several sweeps) Peak value of EVM (over several sweeps) SDEV Standard deviation of EVM values over several sweeps...
Page 226 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Query parameters: <type> <none> Deviation error for current sweep. Average FSK deviation error. Peak FSK deviation error. SDEV Standard deviation of FSK deviation error. PCTL 95 percentile value of FSK deviation error.
Page 227 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Suffix: <n> 1..4 screen number <m> 1..4 irrelevant Query parameters: <type> <none> Frequency error for current sweep. Average frequency error (over several sweeps). Frequency error (over several sweeps). SDEV Standard deviation of frequency error.
Page 228 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Query parameters: <type> <none> Measurement deviation for current sweep. Average FSK measurement deviation. Peak FSK measurement deviation. SDEV Standard deviation of FSK measurement deviation. PCTL 95 percentile value of FSK measurement deviation.
Page 229 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:MARKer<m>:FUNCtion:DDEMod:STATistic:GIMBalance? <type> This command queries the results of the Gain Imbalance error measurement of digital demodulation. The output values are the same as those provided in the Modulation Accuracy table .
Page 230 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Query parameters: <type> <none> I/Q imbalance error (for current sweep) Average I/Q imbalance error (over several sweeps) Peak I/Q imbalance error (over several sweeps) SDEV Standard deviation of I/Q imbalance error...
Page 231 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Suffix: <n> 1..4 screen number <m> 1..4 irrelevant Query parameters: <type> <none> power measurement (for current sweep) Average of power measurement (over several sweeps) Peak of power measurement (over several sweeps)
Page 232 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Mode: CALCulate<n>:MARKer<m>:FUNCtion:DDEMod:STATistic:PERRor? <type> This command queries the results of the phase error measurement performed for digi- tal demodulation. Suffix: <n> 1..4 screen number <m> 1..4 irrelevant Query parameters: <type>...
Page 233 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Suffix: <n> 1..4 screen number <m> 1..4 irrelevant Query parameters: <type> <none> quadrature error (for current sweep) Average quadrature error (over several sweeps) Peak quadrature error (over several sweeps)
Page 234: Calculate:Marker:Function:ddemod:statistic:snr? Calculate:Marker:Link
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Mode: CALCulate<n>:MARKer<m>:FUNCtion:DDEMod:STATistic:SNR? <type> This command queries the results of the SNR error measurement performed for digital demodulation. Suffix: <n> 1..4 screen number <m> 1..4 irrelevant Query parameters: <type> <none>...
Page 235: Calculate:Marker:Maximum:apeak
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Suffix: <n> 1..4 <m> 1..4 Setting parameters: <MarkerCoupling> ON | OFF *RST: Mode: Manual operation: "Couple Screens (On/Off)" on page 129 CALCulate<n>:MARKer<m>:MAXimum:APEak This command positions the active marker or deltamarker on the largest absolute peak value (maximum or minimum) of the selected trace.
Page 236: Calculate:Marker:Maximum:right
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Suffix: <n> Selects the measurement window. <m> Selects the marker. Example: CALC:MARK2:MAX:NEXT Positions marker 2 to the next lower maximum value. Usage: Event Manual operation: "Next Peak" on page 131 CALCulate<n>:MARKer<m>:MAXimum:RIGHt...
Page 237: Calculate:Marker:Minimum:left
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:MARKer<m>:MINimum:LEFT This command positions a marker to the next higher trace minimum on the left of the current value (i.e. in descending X direction). If no next higher minimum value is found on the trace (level spacing to adjacent values <...
Page 238: Calculate:Marker:Minimum:right
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Example: CALC:MARK2:MIN Positions marker 2 to the minimum value of the trace. Usage: Event Manual operation: "Min" on page 132 CALCulate<n>:MARKer<m>:MINimum:RIGHt This command positions a marker to the next higher trace minimum on the right of the current value (i.e.
Page 239: Calculate:Marker:Trace
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Suffix: <n> Selects the measurement window. <m> depends on mode Selects the marker. Parameters: <State> ON | OFF *RST: Example: CALC:MARK3 ON Switches on marker 3 or switches to marker mode.
Page 240: Calculate:Marker:X:slimits[:State] Calculate:Marker:X:slimits:left
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem 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). Range: The range depends on the current x-axis range.
Page 241: Calculate:Marker:X:slimits:right
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Manual operation: "Search Limits" on page 131 CALCulate<n>:MARKer<m>:X:SLIMits:RIGHT <Limit> This command sets the right limit of the marker search range. If the power measurement in zero span is active, this command limits the evaluation range to the trace.
Page 242: Other Calculate Commands
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem The corresponding marker is activated before or switched to marker mode, if neces- sary. To get a valid result, you have to perform a complete measurement with synchroniza- tion to the end of the measurement before reading out the result. This is only possible for single sweeps.
Page 243 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem ..................252 CALCulate<n>:TLABs:STATe ..................253 CALCulate<n>:TLABs[:VALue] ..................253 CALCulate<n>:TLRel:STATe ..................254 CALCulate<n>:TLRel[:VALue] ............254 CALCulate<n>:TRACe<t>:ADJust:ALIGnment:OFFSet ............255 CALCulate<n>:TRACe<t>:ADJust:ALIGnment[:DEFault] ............... 255 CALCulate<n>:TRACe<t>:ADJust[:VALue] .................. 256 CALCulate<n>:TRACe<t>[:VALue] ................... 256 CALCulate<n>:UNIT:ANGLe ...................257 CALCulate<n>:X:UNIT:TIME CALCulate<n>:BERate <Format>...
Page 244 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Example: CALC:FEED 'XTIM:DDEM:MEAS' Selects the measurement signal for display. CALC:FORM PHAS Selects the phase as the result parameter. CALC:DDEM:SPEC:STAT ON Selects spectral display of the phase. Mode: Manual operation: "Result Type Transformation"...
Page 245 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:DLRel:STATe <State> Displays a relative horizontal line in the specified window. This command is only avail- able for eye diagrams, and only if an absolute horizontal line is already available in the same diagram (see on page 244).
Page 246 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:ELIN<startstop>:STATe <Auto> This command restricts the evaluation range. The evaluation range is considered for the following display types: ● eye diagrams ● constellation diagrams ● modulation accuracy ● statistic displays ●...
Page 247 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:FEED <Feed> Selects the signal source to be displayed. Suffix: <n> 1..4 Setting parameters: <Feed> 'XTIM:DDEM:MEAS' | 'XTIM:DDEM:REF' | 'XTIM:DDEM:ERR:MPH' | 'XTIM:DDEM:ERR:VECT' | 'XTIM:DDEM:MACC' | 'XTIM:DDEM:SYMB' | 'TCAP' 'XTIM:DDEM:MEAS'...
Page 248 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Source Type Result Type Parameter Vector I/Q COMP Meas & Ref Signal Magnitude Absolute MAGNitude Magnitude Relative MAGNitude Phase Wrap PHASe Phase Unwrap UPHase Frequency Absolute FREQuency Frequency Relative...
Page 249 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Setting parameters: <Format> MAGNitude | PHASe | UPHase | RIMag | FREQuency | COMP | CONS | IEYE | QEYE | FEYE | CONF | COVF | IQCorr |...
Page 250 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Suffix: <n> 1..4 Setting parameters: <FSKRefDevAbsResult> numeric value Range: The range depends on the symbol rate and has to be between 0.1 to 15 times the symbol rate. *RST:...
Page 251 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:STATistics:PRESet This command sets both axis of the statistics measurement to measurement depend- ent default values. Suffix: <n> 1..4 Example: CALC:STAT:PRES Usage: Event Mode: Manual operation: "Default Settings" on page 113 CALCulate<n>:STATistics:SCALe:AUTO <AutoMode>...
Page 252 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem CALCulate<n>:STATistics:SCALe:Y:LOWer <Value> This command defines the lower limit for the y-axis of the diagram in statistical mea- surements. Since probabilities are specified on the y-axis, the entered numeric values are dimensionless.
Page 253 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Parameters: <State> ON | OFF *RST: Example: Display eye diagram in window 2. LAY:ADD? '1',BEL,MEAS CALC2:FORM QEYE Display absolute vertical line. CALC2:TLAB:STAT ON Query y-value of absolute vertical line.
Page 254 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Example: Display eye diagram in window 2. LAY:ADD? '1',BEL,MEAS CALC2:FORM QEYE Display absolute vertical line. CALC2:TLAB:STAT ON Display relative vertical line. CALC2:TLR:STAT:ON Query x-value of relative vertical line. CALC2:TLR:VAL? Manual operation: "Vertical Line"...
Page 255 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem Setting parameters: <FitOffset> numeric value Range: -8000 to 8000 *RST: Default unit: SYM Example: CALC:TRAC:ADJ:ALIG:OFFS 5 The display range is shifted by 5 symbols towards the right. Mode: Manual operation: "Offset"...
Page 256 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 CALCulate subsystem <t> 1..6 irrelevant Setting parameters: <Reference> TRIGger | BURSt | PATTern TRIGger The reference point is the start of the capture buffer. BURSt The reference point is the burst.
Page 257: Display Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem Example: CALC:UNIT:ANGLe DEG Selects degrees as the default unit. Mode: CALCulate<n>:X:UNIT:TIME <Unit> This command selects the unit (symbols or seconds) for the x axis. Suffix: <n> 1..4 Setting parameters: <Unit>...
Page 258 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem DISPlay[:WINDow<n>]:PRATe:AUTO <DisplayPPSMode> This command turns auto mode of points per symbol on or off. If "Auto" is enabled, most measurements use the current "Capture Oversampling" (see [SENSe:]DDEMod: on page 295). Alternatively, select the number of points to be displayed per...
Page 259 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem Mode: DISPlay[:WINDow<n>]:STATe <Active> Activates/deactivates the window specified by the suffix <1...4>. Suffix: <n> 1..4 Setting parameters: <Active> ON | OFF *RST: Example: DISP:WIND1:STAT ON Activates window 1. Mode: Manual operation: "Screen X active"...
Page 260 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem Manual operation: "Clear Write" on page 121 "Max Hold" on page 121 "Min Hold" on page 121 "Average" on page 121 "View" on page 121 "Trace Mode" on page 122 DISPlay[:WINDow<n>]:TRACe<t>[:STATe] <State>...
Page 261 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem Suffix: <n> 1..4 <t> 1..6 Setting parameters: <PDiv> numeric value numeric value Example: DISP:TRAC:X:PDIV 20 Sets the scaling of the Y axis to 20 DIV. Mode: Manual operation: "X-Axis Range"...
Page 262 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem Manual operation: "X-Axis Reference Value" on page 112 DISPlay[:WINDow<n>]:TRACe<t>:X[:SCALe]:STARt? This command queries the first value of the x-axis in symbols or time, depending on the unit setting for the x-axis.
Page 263 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem The command works only for a logarithmic scaling. You can select the scaling with on page 266. DISPlay[:WINDow<n>]:TRACe<t>:Y:SPACing Suffix: <n> window; For applications that do not have more than 1 measure- ment window, the suffix <n>...
Page 264 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem When is turned off, this command has no immediate SYSTem:DISPlay:UPDate effect on the screen. Suffix: <n> window; For applications that do not have more than 1 measure- ment window, the suffix <n> is irrelevant.
Page 265 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem Parameters: <ReferenceLevel> The unit is variable. Range: see datasheet *RST: -10dBm Example: DISP:TRAC:Y:RLEV -60dBm Manual operation: "Reference Level" on page 111 DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RLEVel:OFFSet <Value> This command defines a reference level offset.
Page 266 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 DISPlay subsystem DISPlay[:WINDow<n>]:TRACe<t>:Y[:SCALe]:RVALue <Value> The command defines the power value assigned to the reference position in the grid. When using a tracking generator, this command requires active normalization. Suffix: <n> irrelevant <t>...
Page 267: Format Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 FORMat subsystem DISPlay[:WINDow<n>]:ZOOM:AREA <x1>, <y1>, <x2>, <y2> This command defines the zoom area. Before you can define a zoom area, you first have to turn the zoom on. Suffix: <n> window; For applications that do not have more than 1 measure- ment window, the suffix <n>...
Page 268: Initiate Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INITiate Subsystem Example: FORM:DEXP:DSEP POIN Sets the decimal point as separator. Manual operation: "ASCII Trace Export" on page 123 FORMat:DEXPort:HEADer <Header> This command defines if an extended file header (including start frequency, sweep time, detector, etc.) is created or not.
Page 269 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INITiate Subsystem As opposed to INITiate<n>[:IMMediate], this command does not reset traces in maxhold, minhold or average mode. Therefore it can be used to continue measure- ments using max hold or averaging functions.
Page 270: Input Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INPut Subsystem With sweep count > 0 or average count > 0, this means a restart of the indicated num- ber of measurements. With trace functions MAXHold, MINHold and AVERage, the pre- vious results are reset on restarting the measurement.
Page 271 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INPut Subsystem ....................276 INPut:FILTer:YIG[:STATe] ....................... 276 INPut:GAIN:STATe .........................277 INPut:SELect INPut:ATTenuation <Value> This command programs the input attenuator. To protect the input mixer against dam- age from overloads, the setting 0 dB can be obtained by entering numerals, not by using the DOWN command.
Page 272 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INPut Subsystem This function is not available if the R&S Digital I/Q Interface (R&S FSV-B17) is active. Parameters: <CouplingType> AC | DC *RST: Example: INP:COUP DC Manual operation: "Input (AC/DC)" on page 116 "Input Coupling"...
Page 273 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INPut Subsystem <PRBSTestState> State of the PRBS test. Not Started Has to be Started Started Passed Failed Done <SampleRateType> 0 Maximum sampling rate is displayed Current sampling rate is displayed <Placeholder>...
Page 274 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INPut Subsystem This command is only available if the optional R&S Digital I/Q Interface (option R&S FSV-B17) is installed. For details see the R&S Digital I/Q Interface (R&S FSV-B17) description of the base unit.
Page 275 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INPut Subsystem Mode: A, IQ, NF, TDS, VSA, CDMA, EVDO, WCDMA, ADEMOD, GSM, OFDM, OFDMA/WiBro, WLAN Manual operation: "Input Sample Rate" on page 136 INPut:EATT <Attenuation> This command defines the electronic attenuation.
Page 276 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 INPut Subsystem This command is only available with option R&S FSV-B25, but not if R&S FSV-B17 is active. Parameters: <State> ON | OFF *RST: Example: INP:EATT:STAT ON Switches the electronic attenuator into the signal path.
Page 277: Instrument Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 MMEMory Subsystem INPut:SELect <Source> This command selects the signal source for measurements. Parameters: <Source> Radio Frequency ("RF INPUT" connector) Digital IQ (only available with R&S Digital I/Q Interface, option R&S FSV-B17)
Page 278 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 MMEMory Subsystem Note: switch to single sweep mode (INIT:CONT OFF) before importing I/Q data as otherwise the instrument will continue to measure data and display the current results rather than the imported data.
Page 279 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 MMEMory Subsystem MMEMory:STORe:IQ:FORMat <Format>, <DataFormat> This command defines the format of the I/Q data to be stored. Parameters: <Format> FLOat32 | INT32 Defines the format of the complex or real data.
Page 280: Output Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 OUTPut Subsystem 4.10 OUTPut Subsystem OUTPut:DIQ <State> If enabled, the captured IQ data is output to the R&S Digital I/Q Interface in a continu- ous stream. This function requires the LVDS interface option (R&S FSV-B17).
Page 281: Sense Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem <PRBSTestState> State of the PRBS test. Not Started Has to be Started Started Passed Failed Done <NotUsed> to be ignored <Placeholder> for future use; currently "0" Example: OUTP:DIQ:CDEV? Result:...
Page 282 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem ..................292 [SENSe:]DDEMod:MSK:FORMat ................293 [SENSe:]DDEMod:NORMalize:ADRoop ................293 [SENSe:]DDEMod:NORMalize:CFDRift ................293 [SENSe:]DDEMod:NORMalize:FDERror ..............294 [SENSe:]DDEMod:NORMalize:IQIMbalance ................294 [SENSe:]DDEMod:NORMalize:IQOFfset ................294 [SENSe:]DDEMod:NORMalize[:VALue] ....................295 [SENSe:]DDEMod:PRATe ..................295 [SENSe:]DDEMod:PRESet:CALC ................. 295 [SENSe:]DDEMod:PRESet:RLEVel ................296 [SENSe:]DDEMod:PRESet[:STANdard] ..................
Page 283: [Sense:]Adjust:configuration:hysteresis:lower
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem .................311 [SENSe:]DDEMod:SIGNal:PATTern .................. 312 [SENSe:]DDEMod:SIGNal[:VALue] ....................312 [SENSe:]DDEMod:SRATe ................312 [SENSe:]DDEMod:STANdard:COMMent ................312 [SENSe:]DDEMod:STANdard:DELete ..............313 [SENSe:]DDEMod:STANdard:PREset[:VALue] ................313 [SENSe:]DDEMod:STANdard:SAVE ............313 [SENSe:]DDEMod:STANdard:SYNC:OFFSet:STATe ............314 [SENSe:]DDEMod:STANdard:SYNC:OFFSet[:VALue] ................... 314 [SENSe]:DDEMod:TFILter:ALPHa ..................314 [SENSe:]DDEMod:TFILter:NAME ..................314...
Page 284: [Sense:]Adjust:configure:level:duration
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Example: SENS:ADJ:CONF:HYST:UPP 2 For an input signal level of currently 20 dBm, the reference level will only be adjusted when the signal level rises above 22 dBm. Manual operation: "Upper Level Hysteresis"...
Page 285: [Sense:]Ddemod:ecalc:offset
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Manual operation: "Auto Level" on page 117 [SENSe:]DDEMod:ECALc:OFFSet <EVMOffsetState> The command activates and deactivates an offset for the calculation of the EVM for OQPSK modulated signals. Setting parameters: <EVMOffsetState>...
Page 286: [Sense:]Ddemod:eprate[:Value]
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Mode: Manual operation: "Estimation Points/Sym" on page 172 [SENSe:]DDEMod:EPRate[:VALue] <EstimationOverSampling> This command determines the number of estimation points per symbol for the modula- tion accuracy table. Setting parameters: <EstimationOverSampling>...
Page 287: [Sense:]Ddemod:filter[:State]
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]DDEMod:FILTer[:STATe] <MeasFilterState> This command defines whether the input signal that is evaluated is filtered by the mea- surement filter. This command has no effect on the Transmit filter. Setting parameters: <MeasFilterState>...
Page 288: [Sense:]Ddemod:fsync:auto
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <FSKNstate> 2FSK 4FSK 8FSK 16FSK *RST: Example: DDEM:FSK:NST 8 Mode: Manual operation: "Modulation Order" on page 144 [SENSe:]DDEMod:FSYNc:AUTO <FineSyncAuto> If "Auto" mode is selected and a Known Data file has been loaded and activated for use, the known data sequences are used.
Page 289: [Sense:]Ddemod:fsync:result
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]DDEMod:FSYNc:RESult? This command queries whether a loaded Known Data file was used for fine synchroni- zation or not. If a maximum symbol error rate was specified (using the [SENSe: command) and exceeded, the file is not used.
Page 290: [Sense:]Ddemod:kdata:state
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]DDEMod:KDATa:STATe <KnownDataState> This command activates the usage of known data. The usage of known data is a pre- requisite for the BER measurement and can also be used for the fine synchronization.
Page 291: [Sense]:Ddemod:mfilter:alpha
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Example: SENS:DDEM:MAPP 'GSM' Sets mapping to GSM. Mode: Manual operation: "Modulation Mapping" on page 145 [SENSe]:DDEMod:MFILter:ALPHa <MeasFilterAlphaBT> This command sets the alpha value of the measurement filter. Setting parameters: <MeasFilterAlphaBT>...
Page 292: [Sense:]Ddemod:mfilter[:State]
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Manual operation: "Type" on page 175 "Load User Filter" on page 175 [SENSe:]DDEMod:MFILter[:STATe] <MeasFilterState> Use this command to switch the measurement filter off. To switch a measurement filter on, use the command.
Page 293 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <Name> TYPE1 | TYPE2 | NORMal | DIFFerential TYPE1 | NORMal TYPE2 | DIFFerential DMSK *RST: QPSK Example: DDEM:FORM MSK Switches MSK demodulation on. DDEM:MSK:FORM TYPE2 Switches DMSK demodulation on.
Page 294 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <RefDevCompensation> ON | OFF Scales the reference signal to the current deviation of the mea- surement signal Uses the nominal deviation you have set for the reference signal...
Page 295 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <Normalize> ON | OFF *RST: Example: SENS:DDEM:NORM ON Turn on IQ offset compensation and amplitude droop compensa- tion Mode: [SENSe:]DDEMod:PRATe <CaptOverSampling> This command determines the number of captured points per symbol.
Page 296 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]DDEMod:PRESet[:STANdard] <Standard> This command selects an automatic setting of all modulation parameters according to a standardized transmission method or a user-defined transmission method. The standardized transmission methods are available in the instrument as predefined standards.
Page 297 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem EDGE_16QAM EDGE_32QAM F1CD = CDMA2K_1X_FWD GSM_AB = GSM_AccessBurst GSM_FB = GSM_FrequencyBurst GSM = GSM_NormalBurst GSM_AB = GSM_AccessBurst GSM_FB = GSM_FrequencyBurst GSM_NB = GSM_NormalBurst GSM_SB = GSM_SynchronisationBurst TETRA_NCDOWN = TETRA_ContinousDownlink...
Page 298 Switches D8PSK demodulation on. Mode: [SENSe:]DDEMod:QAM:FORMat <Name> This command defines the specific demodulation mode for QAM. The current firmware release of the R&S FSV-K70 does not support Differential QAM. Setting parameters: <Name> NORMal | DIFFerential | NPI4 | MNPI4 *RST:...
Page 299 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]DDEMod:QAM:NSTate <QAMNState> This command defines the demodulation order for QAM. NSTate Order 16QAM Pi/4-16QAM 32QAM Pi/4-32QAM 64QAM 128QAM 256QAM Setting parameters: <QAMNState> numeric value *RST: Example: DDEM:FORM QAM Switches QAM demodulation on.
Page 300 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]DDEMod:RLENgth:AUTO <RecLengthAuto> This command switches the automatic adaptation of the capture length on or off. The automatic adaptation is performed so that a sufficient capture length is set as a func- tion of result length, burst and pattern search and network-specific characteristics (e.g.
Page 301 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <SidebandPos> NORMal | INVerse NORMal Normal (non-inverted) position INVerse Inverted position *RST: NORMal Example: DDEM:SBAN INV Selects the inverted position. Mode: Manual operation: "Swap I/Q" on page 155 [SENSe:]DDEMod:SEARch:BURSt:AUTO <AutoBurstSearch>...
Page 302 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <MinGapLength> numeric value Range: 1 to 15000 *RST: Default unit: SYM Example: DDEM:SEAR:BURS:GLEN 3US Mode: Manual operation: "Min Gap Length" on page 159 [SENSe:]DDEMod:SEARch:BURSt:LENGth:MAXimum <MaxLength> This command defines the maximum length of a burst. Only those bursts will be recog- nized that fall below this length.
Page 303 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <MeasOnlyOnBurst> MEAS | BURS *RST: MEAS Example: DDEM:SEAR:BURS:MODE BURS Measurement is performed only if burst is found. Mode: Manual operation: "Meas only if burst was found" on page 159 [SENSe:]DDEMod:SEARch:BURSt:SKIP:FALLing <RunOut>...
Page 304 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Example: DDEM:SEAR:BURS OFF Switches burst search off. Mode: [SENSe:]DDEMod:SEARch:BURSt:TOLerance <SearchTolerance> This command controls burst search tolerance. Setting parameters: <SearchTolerance> numeric value Range: 0 to 100000 *RST: Default unit: SYM...
Page 305 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Example: INIT:CONT OFF //switch to single sweep mode INIT;*WAI //perform single sweep SENS:DDEM:SEAR:MBUR:CALC 1 //switch to first result range SENS:DDEM:SEAR:MBUR:START? //query start of current (=first) result range // in the capture buffer...
Page 306 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Mode: Manual operation: "Coarse Synchronization" on page 172 [SENSe:]DDEMod:SEARch:SYNC:AUTO <AutoPatternSearch> This command links the pattern search to the type of signal. When a signal is marked as patterned, pattern search is switched on automatically.
Page 307 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Example: :DDEM:SEAR:SYNC:NAME 'GSM_TSC0' Name of pattern. :DDEM:SEAR:SYNC:DATA '0001000000000001' Data of pattern. :DDEM:SEAR:SYNC:COMM 'PATTERN FOR PPSK' Comment. Mode: Manual operation: "Edit" on page 163 "New" on page 163 "Comment" on page 165 [SENSe:]DDEMod:SEARch:SYNC:COPY <Pattern>...
Page 308 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <Data> string Four values represent a symbol (hexadecimal format). The value range of a symbol depends on the degree of modulation. With a degree of modulation of 4, all symbols have a value range of: 0000, 0001, 0002, 0003;...
Page 309 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Mode: Manual operation: "I/Q Correlation Threshold" on page 161 [SENSe:]DDEMod:SEARch:SYNC:MODE <MeasOnlyOnPattern> This command sets the vector analyzer so that the measurement is performed only if the measurement was synchronous to the selected sync pattern (SYNC). The mea- sured values are displayed and considered in the error evaluation only if the set sync pattern was found.
Page 310 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <NState> numeric value Example: :DDEM:SEAR:SYNC:NAME 'GSM_TSC0' Selects the GSM_TSC0 pattern. :DDEM:SEAR:SYNC:DATA '00010001' Enters 00010001 as data. :DDEM:SEAR:SYNC:NST 4 Sets the degree of modulation. Mode: Manual operation: "Mod. order"...
Page 311 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <Select> string Example: DDEM:SEAR:SYNC:SEL 'GSM_TSC0' Mode: Manual operation: "Select Pattern for Search" on page 161 [SENSe:]DDEMod:SEARch:SYNC:STATe <PatternSearch> This command switches the search for a sync sequence on or off.
Page 312 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Mode: Manual operation: "Pattern" on page 147 [SENSe:]DDEMod:SIGNal[:VALue] <SignalType> This command specifies whether the signal is bursted or continuous. Setting parameters: <SignalType> CONTinuous | BURSted *RST: CONTinuous Mode: Manual operation: "Continuous Signal / Burst Signal"...
Page 313 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Example: SENS:DDEM:STAN:DEL 'C:\path\standardname' Usage: Setting only Mode: Manual operation: "Delete Standard" on page 109 [SENSe:]DDEMod:STANdard:PREset[:VALue] This command restores the default settings of the currently selected standard. Usage: Event Mode: Manual operation: "Standard Defaults"...
Page 314 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]DDEMod:STANdard:SYNC:OFFSet[:VALue] <PatternOffset> This command defines a number of symbols which are ignored before the comparison with the pattern starts. Setting parameters: <PatternOffset> numeric value Range: 0 to 15000 *RST:...
Page 315 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem Setting parameters: <TXFilterState> ON | OFF Switches the Transmit filter off. Switches the Transmit filter specified by [SENSe:]DDEMod: on. However, this command is not necessary, TFILter:NAME as the command automati- [SENSe:]DDEMod:TFILter:NAME cally switches the filter on.
Page 316 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]DDEMod:UQAM:FORMat <Name> This command selects the type of UserQAM demodulation. Setting parameters: <Name> string Name of the UserQAM demodulation Example: DDEM:FORM UQAM Selects user QAM demodulation. DDEM:UQAM:FORM '32ary' Selects 32ary user QAM name.
Page 317 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 SENSe subsystem [SENSe:]FREQuency:CENTer:STEP:AUTO <State> This command links the step width to the current standard (ON) or sets the step width entered using the FREQ:CENT:STEP command (OFF) (see [SENSe:]FREQuency: on page 316).
Page 318: Status:questionable Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 STATus:QUEStionable Subsystem Usage: SCPI confirmed Mode: Manual operation: "Statistics Count" on page 119 [SENSe:]SWEep:COUNt:CURRent <Counter> This command queries the current statistics counter value which indicates how many result ranges have been evaluated. For results that use the capture buffer as a source, the number of used capture buffers can be queried.
Page 319 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 STATus:QUEStionable Subsystem STATus:QUEStionable:CONDition This command queries the CONDition part of the "STATus:QUEStionable" register. This part contains the sum bit of the next lower register. This register part can only be read, but not written into or cleared. Readout does not delete the contents of the CON- Dition part.
Page 320 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 STATus:QUEStionable Subsystem Usage: Query only SCPI confirmed Mode: STATus:QUEStionable:MODulation<n>[:EVENt]? The EVENt part indicates whether an event has occurred since the last reading, it is the "memory" of the condition part. It only indicates events passed on by the transition filters.
Page 321 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 STATus:QUEStionable Subsystem Setting parameters: <PTransition> the EVENt bit is not set the EVENt bit is set Usage: SCPI confirmed Mode: STATus:QUEStionable:MODulation<n>:<ResultType>[:EVENt]? The EVENt part indicates whether an event has occurred in the evaluation of the selected result type since the last reading.
Page 322 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 STATus:QUEStionable Subsystem Usage: Query only SCPI confirmed Mode: STATus:QUEStionable:MODulation<n>:<ResultType>:ENABle? <Mode> Determines whether the EVENt bit of the associated status register for the result type contributes to the sum bit of the STATus:QUEStionable:MODulation register.
Page 323 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 STATus:QUEStionable Subsystem Setting parameters: <Enable> the EVENt bit is not set the EVENt bit is set Usage: Query only SCPI confirmed Mode: STATus:QUEStionable:MODulation<n>:<ResultType>:PTRansition? <Mode> This bit acts as a transition filter. When a bit of the CONDition part of the associated status register for the result type is changed from 0 to 1, the PTR bit decides whether the EVENt bit is set to 1.
Page 324 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 STATus:QUEStionable Subsystem STATus:QUEStionable:SYNC:ENABle <SumBit>,<ChannelName> This command controls the ENABle part of a register. The ENABle part allows true conditions in the EVENt part of the status register to be reported in the summary bit. If a bit is 1 in the enable register and its associated event bit transitions to true, a positive transition will occur in the summary bit reported to the next higher level.
Page 325: System Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 TRACe subsystem Query parameters: <ChannelName> String containing the name of the channel. The parameter is optional. If you omit it, the command works for the currently active channel. Usage: Query only 4.13 SYSTem Subsystem...
Page 326 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 TRACe subsystem When querying the results for eye diagrams, the results are merely superimposed in the display. This means that the eye diagram result displays are the same as the real/imag result display.
Page 327 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 TRACe subsystem Setting parameters: <Trace> TRACe1/2/3/4/5/6 The complete data from the corresponding trace. TRACe1R/TRACe2R/TRACe3R The real data from the corresponding trace. The parameters are available for the Real/Imaginary result types. TRACe1I/TRACe2I/TRACe3I The imaginary data from the corresponding trace.
Page 328: Trigger Subsystem
® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 TRIGger subsystem Parameters: <State> ON | OFF | FORCe160 (Default) The maximum available bandwidth is used for all sam- ple rates. If the bandwidth extension option R&S FSV-B160 is installed, it...
Page 329 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 TRIGger subsystem Example: TRIG:LEV:BB -30DBM Mode: Manual operation: "Trigger Level" on page 125 "Trigger Mode" on page 155 TRIGger<n>[:SEQuence]:BBPower:HOLDoff <Value> This command sets the holding time before the next BB power trigger event (for digital input via the R&S Digital I/Q Interface, R&S FSV-B17).
Page 330 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 TRIGger subsystem Example: TRIG:SOUR IFP Sets the IF power trigger source. TRIG:IFP:HOLD 200 ns Sets the holding time to 200 ns. Manual operation: "Trigger Holdoff" on page 157 TRIGger<n>[:SEQuence]:IFPower:HYSTeresis <Value> This command sets the limit that the hysteresis value for the IF power trigger has to fall below in order to trigger the next measurement.
Page 331 ® Remote Control Commands - R&S FSV-K70 R&S FSV-K70 TRIGger subsystem Example: TRIG:SLOP NEG Manual operation: "Trigger Polarity" on page 125 TRIGger<n>[:SEQuence]:SOURce <Source> This command selects the trigger source. IF power and RF power triggers are not available together with the bandwidth exten- sion option R&S FSV-B160.
Page 332: Status Reporting System (Option R&S Fsv-K70)
In this section, only the new and altered status registers/bits for the VSA option (R&S FSV-K70) are described. Detailed information on the status registers of the base system is given in the section "Status Reporting System" in chapter 5 of the Operating Manual on CD.
Page 333 ® Status Reporting System (Option R&S FSV-K70) R&S FSV-K70 = logical OR of all bits DigitalIQ = specific for FSV-K70. SYNC ACPLimit BURSt SYNC STAT:QUES:SYNC LMARgin LIMit CALibration (=UNCAL) MODulation FREQuency FDEPeak TEMPerature FDEMean POWer FDECurrent PFEPeak STATus:QUEStionable PIQOffset PFEMean...
Page 334: Status:questionable Register
® Status Reporting System (Option R&S FSV-K70) R&S FSV-K70 STATus:QUEStionable Register STATus:QUESTionable:MODulation<n>:CFRequency Register......337 STATus:QUESTionable:MODulation<n>:IQRHO Register........337 STATus:QUESTionable:MODulation<n>:FSK Register.........338 5.1 STATus:QUEStionable Register This register contains information about indefinite states which may occur if the instru- ment is operated without meeting the specifications or defined limits. It can be read...
Page 335: Status:questionable:sync Register
323 and STATus:QUEStionable:SYNC:CONDition? on page 324. STATus:QUEStionable:SYNC[:EVENt]? Table 5-2: Status error bits in STATus:QUEStionable:SYNC register for R&S FSV-K70 Definition Burst not found. This bit is set if a burst could not be detected. Sync not found This bit is set if the sync sequence (pattern) of the midamble could not be detected.
Page 336: Status:questionable:modulation:Evm Register
® Status Reporting System (Option R&S FSV-K70) R&S FSV-K70 STATus:QUESTionable:MODulation<n>:PHASe Register 5.4 STATus:QUESTionable:MODulation<n>:EVM Register This register comprises information about limit violations in EVM evaluation. It can be queried with commands STATus:QUEStionable:MODulation<n>:EVM:CONDition and STATus:QUEStionable:MODulation<n>:EVM[:EVENt]. Bit No Meaning Error in current RMS value...
Page 337: Status:questionable:modulation:Magnitude Register
® Status Reporting System (Option R&S FSV-K70) R&S FSV-K70 STATus:QUESTionable:MODulation<n>:IQRHO Register 5.6 STATus:QUESTionable:MODulation<n>:MAGnitude Register This register comprises information about limit violations in Magnitude Error evaluation. It can be queried with commands STATus:QUEStionable:MODulation<n>:MAGNitude:CONDition and STATus:QUEStionable:MODulation<n>:MAGNitude[:EVENt]. Bit No Meaning Error in current RMS value...
Page 338: Status:questionable:modulation:Fsk Register
® Status Reporting System (Option R&S FSV-K70) R&S FSV-K70 STATus:QUESTionable:MODulation<n>:FSK Register STATus:QUEStionable:MODulation<n>:IQRHO:CONDition and STATus:QUEStionable:MODulation<n>:IQRHO[:EVENt]. Bit No Meaning Error in current RHO value Error in mean RHO value Error in peak RHO value These bits are not used Error in current I/Q offset value...
Page 339: Support
® Support R&S FSV-K70 Explanation of Error Messages 6 Support The "R&S Support" softkey in the SAVE/RCL > "Export" menu stores useful informa- tion for troubleshooting in case of errors. This data is stored in the C:\R_S\Instr\user\Support directory on the instru- ment.
Page 340 ® Support R&S FSV-K70 Explanation of Error Messages ● Signal is bursted, but bursts have not been captured completely The burst search can only find bursts that start and end within the capture buffer. It ignores bursts that are cut off.
Page 341 ® Support R&S FSV-K70 Explanation of Error Messages ● The settings do not match the signal In order to allow you to select certain bursts, the burst search only searches for bursts that have a length between "Min Length" and "Max Length" (plus a tolerance that you can set in the "Burst Search"...
Page 342 ® Support R&S FSV-K70 Explanation of Error Messages Figure 6-6: Example for adjusting the minimum gap length For more information, see "Burst Search" on page 158 ● The pattern search is switched on, fails and the alignment is with reference to the pattern.
Page 343 In the R&S FSQ-K70 it is possible to search for multiple patterns at the same time. For example, in a GSM measurement, the capture buffer can be checked for all TSCs simultaneously. This is not possible in the R&S FSV-K70. Solution: Make sure that the correct pattern is specified in the "Signal Description"...
Page 344 ® Support R&S FSV-K70 Explanation of Error Messages Figure 6-8: Example for failed alignment In this screenshot, the alignment of the long result range to the burst center is not pos- sible because there are not enough samples in the capture buffer before the burst starts.
Page 345 ® Support R&S FSV-K70 Explanation of Error Messages Message: Pattern Search On, But No Pattern Selected Figure 6-9: The red circle shows the place where you can specify a pattern Solution: Select an existing pattern (or create a new pattern) that you expect to be within the signal.
Page 346 Synchronization in the R&S FSV-K70 is performed in two stages: coarse synchroniza- tion that precedes the reference signal generation and fine synchronization based on the reference signal.
Page 347 ® Support R&S FSV-K70 Explanation of Error Messages Example: measurement of a GSM EDGE pattern that has a length of 26 symbols. Figure 6-10: User Pattern for Sync = Off Figure 6-11: User Pattern for Sync = On ● Choose a longer "Result Range".
Page 348: Flow Chart For Troubleshooting
® Support R&S FSV-K70 Flow Chart for Troubleshooting Message: Result Ranges Overlap This message does not indicate an error. It is merely displayed to inform you that the defined result ranges in the capture buffer overlap. Thus, some captured data is evalu- ated more than once.
Page 349 ® Support R&S FSV-K70 Flow Chart for Troubleshooting Troubleshooting Overview Demodulation Failed Press Preset (in order to start from a Indications are (e.g.): known state) - Sync Failed/Unstable Message in the Status Bar - The measurement I/Q Constellation does not look at all like a constellation...
Page 350: Frequently Asked Questions
® Support R&S FSV-K70 Frequently Asked Questions From 1 Is your signal bursted? Does your signal contain a pattern? Does this pattern matter to you? E.g. do you want to align your result Does your signal consist of ranges to the pattern or check whether the...
Page 351 R&S FSQ-K70 and the R&S FSV-K70......353 Problem: the MSK/FSK signal demodulates on the R&S FSQ-K70, but not on the R&S FSV-K70 or: Why do I have to choose different transmit filters in the R&S FSQ-K70 and the R&S FSV-K70?....................354 Problem: The EVM trace looks okay, but the EVM in the result summary is significantly different........................
Page 352 ® Support R&S FSV-K70 Frequently Asked Questions Problem: The measurement screen does not show average results Solution: ● 1. Press the key to select the measurement screen. ● 2. Press the TRACE key. ● 3. Press the "Trace Wizard" softkey.
Page 353 Problem: The Constellation I/Q measurement result display has a different num- ber of constellation points in the R&S FSQ-K70 and the R&S FSV-K70 Reason: In the FSQ-K70, the Constellation I/Q measurement displays the symbol instants of the Vector I/Q measurement.
Page 354 R&S FSV-K70 Problem: the MSK/FSK signal demodulates on the R&S FSQ-K70, but not on the R&S FSV-K70 or: Why do I have to choose different transmit filters in the R&S FSQ-K70 and the R&S FSV-K70? When generating an MSK/FSK reference signal, the R&S FSQ-K70 automatically replaces the Dirac pulses generated by the frequency mapper with square pulses with the length of one symbol.
Page 355 ® Support R&S FSV-K70 Frequently Asked Questions Figure 6-12: Problem: EVM in result summary does not correspond with trace display Figure 6-13: Solution: Result Summary with correct evaluation range setting ● Make sure that the same samples are evaluated. The EVM trace displays (as default) all sample instants, e.g.
Page 356 Manual) and is comparable to the "Freq Err RMS" in the R&S FSV-K70. How- ever, while the "FSK DEV ERROR" in the R&S FSQ-K70 is given in Hz, the "Freq Err RMS" in the R&S FSV-K70 is given in percent, i.e. relative to the "FSK Meas Devia- tion".
Page 357 ® Support R&S FSV-K70 Frequently Asked Questions Problem: The PSK/QAM Signal shows spikes in the Frequency Error result dis- play Solution: These spikes are usually uncritical and are caused by zero-transitions in the I/Q Plane. Question: The y-axis unit for the spectrum of the measurement signal can be chosen to be "dB".
Page 358 ® Support R&S FSV-K70 Frequently Asked Questions :SENSe1:SWEep:COUNt 0 Set the "Statistic Count" to "Auto" mode. :INITiate1:IMMediate Do single sweep. :SENSe1:SWEep:COUNt:CURRent? Query the number of demodulated bursts within the capture buffer. For n = 1:NumberOfBursts :SENSe1:DDEMod:SEARch:MBURst:CALC n :TRACe4? TRACe1 'Query the result symbols in screen D Step through all bursts and query the demodulated symbols.
Page 359: Annex
® Formulae and Abbreviations R&S FSV-K70 Formulae Annex A Formulae and Abbreviations The following sections are provided for reference purposes and include detailed formu- lae and abbreviations ● Formulae.......................359 ● Abbreviations......................373 A.1 Formulae ● Trace-based Evaluations..................359 ● Result Summary Evaluations................
Page 360 ® Formulae and Abbreviations R&S FSV-K70 Formulae Test parameter Formula     Magnitude  MEAS MEAS            Phase   Phase MEAS MEAS     ...
Page 361 ® Formulae and Abbreviations R&S FSV-K70 Formulae Figure 3 Reference Compensate: Frequency Ref. deviation Frequency Compensate: Reference Modulator Ref. deviation Measured Frequency Compensate: Compensate: Frequency Measured MEAS Timing Carrier drift Modulator Carrier offset Compensate: MEAS Timing Gain Figure A-1: Reconstruction of the reference and measured I/Q waveforms for FSK modulation Note that a reference deviation error is corrected in the reference frequency trace.
Page 362 ® Formulae and Abbreviations R&S FSV-K70 Formulae A.1.2.1 PSK, QAM and MSK Modulation For PSK, QAM and MSK modulation the estimation model is described in detail in chapter Chapter 2.5.1, "PSK, QAM and MSK Modulation", on page 51. The parameters...
Page 363 ® Formulae and Abbreviations R&S FSV-K70 Formulae IQ Offset C                              ...
Page 364 ® Formulae and Abbreviations R&S FSV-K70 Formulae FSK Deviation Error          MEAS  Estimated FSK deviation error [Hz]. FSK Measurement Deviation   B   MEAS  MEAS Estimated FSK deviation of the meas signal [Hz].
Page 365 ® Formulae and Abbreviations R&S FSV-K70 Formulae Mathematical expression Calculation in R&S FSVA/FSV StdDev σ                    with with    ...
Page 366 ® Formulae and Abbreviations R&S FSV-K70 Formulae Filter Type Setting Parameter Impulse Response Raised cosine (RC) Alpha (⍺)                      ...
Page 367 ® Formulae and Abbreviations R&S FSV-K70 Formulae         (t) is the impulse response of the EDGE transmit filter A.1.6.2 Measurement Filter EDGE Measurement filters RC filter, Alpha = 0.25, single-side-band 6 dB bandwith = 90 kHz Windowing by multi- plying the impulse response according to the following equation: ...
Page 368 ® Formulae and Abbreviations R&S FSV-K70 Formulae Operating Manual 1176.7578.02 ─ 09...
Page 369 ® Formulae and Abbreviations R&S FSV-K70 Formulae Low-ISI Filters The following frequency responses are obtained when using a low-ISI measurment fil- ter and the Transmit filter indicated in the title of each diagram. Operating Manual 1176.7578.02 ─ 09...
Page 370 ® Formulae and Abbreviations R&S FSV-K70 Formulae Operating Manual 1176.7578.02 ─ 09...
Page 371 ® Formulae and Abbreviations R&S FSV-K70 Formulae Operating Manual 1176.7578.02 ─ 09...
Page 372 ® Formulae and Abbreviations R&S FSV-K70 Formulae Operating Manual 1176.7578.02 ─ 09...
Page 373: Abbreviations
® Formulae and Abbreviations R&S FSV-K70 Abbreviations A.2 Abbreviations The following abbreviations are commonly used in the description of the R&S FSV-K70 option. Abbreviation Meaning See section Frequency Shift Keying Frequency Shift Keying (FSK) Modulation mode for which the information is encrypted in the fre- quency.
Page 374 ® Formulae and Abbreviations R&S FSV-K70 Abbreviations Abbreviation Meaning See section ISI-free demodulation Demodulation structure in which System-Theoretical Modulation the signal is no longer influenced and Demodulation Filters by adjacent symbols at the deci- sion instants after signal-adapted filtering. MEAS filter...
Page 375: B Predefined Standards And Settings
® Predefined Standards and Settings R&S FSV-K70 B Predefined Standards and Settings In the "Digital Standards" menu, predefined basic settings for standards can be selected and user-defined standards stored (see "Digital Standards" on page 108). The most common measurements are predefined as standard settings for a large num- ber of mobile radio networks.
Page 376 ® Predefined Standards and Settings R&S FSV-K70 Operating Manual 1176.7578.02 ─ 09...
Page 377 ® Predefined Standards and Settings R&S FSV-K70 Operating Manual 1176.7578.02 ─ 09...
Page 378 ® Predefined Standards and Settings R&S FSV-K70 Operating Manual 1176.7578.02 ─ 09...
Page 379 ® Predefined Standards and Settings R&S FSV-K70 Operating Manual 1176.7578.02 ─ 09...
Page 380 ® Predefined Standards and Settings R&S FSV-K70 Operating Manual 1176.7578.02 ─ 09...
Page 381: List Of Commands
® List of Commands R&S FSV-K70 List of Commands [SENSe:]ADJust:CONFiguration:HYSTeresis:LOWer................... 283 [SENSe:]ADJust:CONFiguration:HYSTeresis:UPPer..................283 [SENSe:]ADJust:CONFigure:LEVel:DURation....................284 [SENSe:]ADJust:CONFigure:LEVel:DURation:MODE.................. 284 [SENSe:]ADJust:LEVel..........................284 [SENSe:]DDEMod:ECALc:OFFSet........................285 [SENSe:]DDEMod:ECALc[:MODE]........................285 [SENSe:]DDEMod:EPRate:AUTO......................... 285 [SENSe:]DDEMod:EPRate[:VALue]......................286 [SENSe:]DDEMod:FACTory[:VALue]......................286 [SENSe:]DDEMod:FILTer[:STATe]........................287 [SENSe:]DDEMod:FORMat........................... 287 [SENSe:]DDEMod:FSK:NSTate........................287 [SENSe:]DDEMod:FSYNc:AUTO........................288 [SENSe:]DDEMod:FSYNc:LEVel........................288 [SENSe:]DDEMod:FSYNc:RESult?....................... 289 [SENSe:]DDEMod:FSYNc[:MODE]....................... 289 [SENSe:]DDEMod:KDATa:STATe.........................290 [SENSe:]DDEMod:KDATa[:NAME]........................290 [SENSe:]DDEMod:MAPPing:CATalog?......................290 [SENSe:]DDEMod:MAPPing[:VALue]......................290...
Page 382 ® List of Commands R&S FSV-K70 [SENSe:]DDEMod:SEARch:BURSt:LENGth:MAXimum................302 [SENSe:]DDEMod:SEARch:BURSt:LENGth[:MINimum]................302 [SENSe:]DDEMod:SEARch:BURSt:MODE....................302 [SENSe:]DDEMod:SEARch:BURSt:SKIP:FALLing..................303 [SENSe:]DDEMod:SEARch:BURSt:SKIP:RISing..................303 [SENSe:]DDEMod:SEARch:BURSt:STATe....................303 [SENSe:]DDEMod:SEARch:BURSt:TOLerance.................... 304 [SENSe:]DDEMod:SEARch:MBURst:CALC....................304 [SENSe:]DDEMod:SEARch:MBURst:STARt?....................304 [SENSe:]DDEMod:SEARch:PATTern:CONFigure:AUTO................305 [SENSe:]DDEMod:SEARch:PATTern:SYNC:AUTO..................305 [SENSe:]DDEMod:SEARch:PATTern:SYNC[:STATe].................. 305 [SENSe:]DDEMod:SEARch:SYNC:AUTO..................... 306 [SENSe:]DDEMod:SEARch:SYNC:CATalog....................306 [SENSe:]DDEMod:SEARch:SYNC:COMMent....................306 [SENSe:]DDEMod:SEARch:SYNC:COPY.....................307 [SENSe:]DDEMod:SEARch:SYNC:DATA..................... 307 [SENSe:]DDEMod:SEARch:SYNC:DELete....................308 [SENSe:]DDEMod:SEARch:SYNC:FOUNd....................308 [SENSe:]DDEMod:SEARch:SYNC:IQCThreshold..................308 [SENSe:]DDEMod:SEARch:SYNC:MODE....................309 [SENSe:]DDEMod:SEARch:SYNC:NAME.....................309...
Page 383 ® List of Commands R&S FSV-K70 [SENSe]:DDEMod:MFILter:ALPHa........................291 [SENSe]:DDEMod:TFILter:ALPHa.........................314 ABORt................................207 CALCulate<n>:BERate..........................243 CALCulate<n>:DDEM:SPECtrum[:STATe]....................243 CALCulate<n>:DELTamarker<m>:AOFF...................... 208 CALCulate<n>:DELTamarker<m>:LINK......................208 CALCulate<n>:DELTamarker<m>:MAXimum:APEak................... 208 CALCulate<n>:DELTamarker<m>:MAXimum:LEFT..................209 CALCulate<n>:DELTamarker<m>:MAXimum:NEXT..................209 CALCulate<n>:DELTamarker<m>:MAXimum:RIGHt..................210 CALCulate<n>:DELTamarker<m>:MAXimum[:PEAK]...................209 CALCulate<n>:DELTamarker<m>:MINimum:LEFT..................210 CALCulate<n>:DELTamarker<m>:MINimum:NEXT..................210 CALCulate<n>:DELTamarker<m>:MINimum:RIGHt..................211 CALCulate<n>:DELTamarker<m>:MINimum[:PEAK]..................211 CALCulate<n>:DELTamarker<m>:TRACe....................212 CALCulate<n>:DELTamarker<m>:X......................212 CALCulate<n>:DELTamarker<m>:X:ABSolute?................... 212 CALCulate<n>:DELTamarker<m>:X:RELative?....................213 CALCulate<n>:DELTamarker<m>:Y?......................213 CALCulate<n>:DELTamarker<m>[:STATe]....................211 CALCulate<n>:DLABs:STATe........................244 CALCulate<n>:DLABs[:VALue]........................244 CALCulate<n>:DLRel:STATe........................
Page 384 ® List of Commands R&S FSV-K70 CALCulate<n>:LIMit:MACCuracy:FERRor:PPEak:VALue................219 CALCulate<n>:LIMit:MACCuracy:FERRor:RCURrent:VALue...............219 CALCulate<n>:LIMit:MACCuracy:FERRor:RMEan:VALue................219 CALCulate<n>:LIMit:MACCuracy:FERRor:RPEak:VALue................219 CALCulate<n>:LIMit:MACCuracy:MERRor:PCURrent:VALue..............219 CALCulate<n>:LIMit:MACCuracy:MERRor:PMEan:VALue................219 CALCulate<n>:LIMit:MACCuracy:MERRor:PPEak:VALue................219 CALCulate<n>:LIMit:MACCuracy:MERRor:RCURrent:VALue..............219 CALCulate<n>:LIMit:MACCuracy:MERRor:RMEan:VALue................219 CALCulate<n>:LIMit:MACCuracy:MERRor:RPEak:VALue................219 CALCulate<n>:LIMit:MACCuracy:OOFFset:CURRent:VALue..............220 CALCulate<n>:LIMit:MACCuracy:OOFFset:MEAN:VALue................220 CALCulate<n>:LIMit:MACCuracy:OOFFset:PEAK:VALue................220 CALCulate<n>:LIMit:MACCuracy:PERRor:PCURrent:VALue...............220 CALCulate<n>:LIMit:MACCuracy:PERRor:PMEan:VALue................220 CALCulate<n>:LIMit:MACCuracy:PERRor:PPEak:VALue................220 CALCulate<n>:LIMit:MACCuracy:PERRor:RCURrent:VALue...............220 CALCulate<n>:LIMit:MACCuracy:PERRor:RMEan:VALue................220 CALCulate<n>:LIMit:MACCuracy:PERRor:RPEak:VALue................220 CALCulate<n>:LIMit:MACCuracy:RHO:CURRent:VALue................221 CALCulate<n>:LIMit:MACCuracy:RHO:MEAN:VALue..................
Page 385 ® List of Commands R&S FSV-K70 CALCulate<n>:MARKer<m>:MINimum:RIGHt....................238 CALCulate<n>:MARKer<m>:MINimum[:PEAK].....................237 CALCulate<n>:MARKer<m>:SEARch......................238 CALCulate<n>:MARKer<m>:TRACe......................239 CALCulate<n>:MARKer<m>:X........................239 CALCulate<n>:MARKer<m>:X:SLIMits:LEFT....................240 CALCulate<n>:MARKer<m>:X:SLIMits:RIGHT..................... 241 CALCulate<n>:MARKer<m>:X:SLIMits:ZOOM..................... 241 CALCulate<n>:MARKer<m>:X:SLIMits[:STATe]................... 240 CALCulate<n>:MARKer<m>:Y?........................241 CALCulate<n>:MARKer<m>[:STATe]......................238 CALCulate<n>:STATistics:CCDF[:STATe]....................250 CALCulate<n>:STATistics:MODE......................... 250 CALCulate<n>:STATistics:PRESet....................... 251 CALCulate<n>:STATistics:SCALe:AUTO......................251 CALCulate<n>:STATistics:SCALe:X:BCOunt....................251 CALCulate<n>:STATistics:SCALe:Y:LOWer....................252 CALCulate<n>:STATistics:SCALe:Y:UNIT....................252 CALCulate<n>:STATistics:SCALe:Y:UPPer....................252 CALCulate<n>:TLABs:STATe........................252 CALCulate<n>:TLABs[:VALue]........................253...
Page 386 ® List of Commands R&S FSV-K70 DISPlay[:WINDow<n>]:TRACe<t>[:STATe]....................260 DISPlay[:WINDow<n>]:ZOOM:AREA......................267 DISPlay[:WINDow<n>]:ZOOM:STATe......................266 FORMat:DEXPort:DSEParator........................267 FORMat:DEXPort:HEADer..........................268 FORMat:DEXPort:MODE..........................268 INITiate:REFMeas............................270 INITiate<n>:CONMeas..........................268 INITiate<n>:CONTinuous..........................269 INITiate<n>[:IMMediate]..........................269 INPut:ATTenuation............................271 INPut:ATTenuation:AUTO..........................271 INPut:COUPling.............................271 INPut:DIQ:CDEVice............................272 INPut:DIQ:RANGe:COUPling........................273 INPut:DIQ:RANGe[:UPPer]..........................273 INPut:DIQ:RANGe[:UPPer]:UNIT........................274 INPut:DIQ:SRATe............................274 INPut:EATT..............................275 INPut:EATT:AUTO............................275 INPut:EATT:STATe............................275 INPut:FILTer:YIG[:STATe]..........................276 INPut:GAIN:STATe ............................276...
Page 387 ® List of Commands R&S FSV-K70 STATus:QUEStionable[:EVENt]?........................319 SYSTem:DISPlay:UPDate..........................325 TRACe:IQ:WBANd[:STATe].......................... 327 TRACe<n>:IQ:BWIDth...........................327 TRACe<n>[:DATA]............................325 TRIGger<n>[:SEQuence]:BBPower:HOLDoff....................329 TRIGger<n>[:SEQuence]:HOLDoff[:TIME]....................330 TRIGger<n>[:SEQuence]:IFPower:HOLDoff....................329 TRIGger<n>[:SEQuence]:IFPower:HYSTeresis.................... 330 TRIGger<n>[:SEQuence]:LEVel:BBPower....................328 TRIGger<n>[:SEQuence]:LEVel:IFPower......................329 TRIGger<n>[:SEQuence]:SLOPe........................330 TRIGger<n>[:SEQuence]:SOURce....................... 331 Operating Manual 1176.7578.02 ─ 09...
Page 388: Index
® Index R&S FSV-K70 Index Activating the option ............67 Capture Length Adjust Settings I/Q Capture ............... 154 Softkey ..............113 I/Q Capture (remote control) ........300 Alignment Capture Oversampling ............ 154 Result range ............167 Remote control ............295 Alpha/BT ..............
Page 389 ® Index R&S FSV-K70 Digital IQ data device ............... 136 Digital IQ Info Filter bandwidth Remote control ............272 Digital I/Q (remote control) ........327 Filters Softkey ..............139 Digital Standards Activating (remote control) ......287, 292, 314 Alpha/BT (remote control) ......... 314 Softkey ..............
Page 390 ® Index R&S FSV-K70 I/Q data Magnitude Relative Block diagram ............. 10 Result type ..............71 Export (remote control) ..........278 Mapping ..............21, 145 Export format (remote control) ........279 marker Import (remote control) ..........277 peak ................131 Saving ...............
Page 391 ® Index R&S FSV-K70 Online help R&S Support Working with ..............8 softkey .............. 138, 140 Options Range Settings B160 ................. 155 Softkey ..............127 B160 (Bandwidth extension) ........13 Ranges Bandwidth extension ..........155 Softkey ..............111 FSV-B25 ............114, 275 Softkey (statistic measurements) ......
Page 392 ® Index R&S FSV-K70 Sample rate Next Min ..............132 Digital I/Q Interface (remote control) ......274 Next Min (remote control) ......210, 237, 238 Digital IQ ..............136 Next Peak ..............131 Save As Standard Next Peak (remote control) ..209, 210, 211, 235, 236, Softkey ..............
Page 393 ® Index R&S FSV-K70 Marker to Trace (remote control) ......239 Trace mode ..............122 Max Hold ............121, 201 Average ............121, 202 Mech Atten Auto ............115 Blank ..............122, 202 Mech Atten Auto (remote control) ......271 Clear Write ............
Page 394 ® Index R&S FSV-K70 Y-Axis Auto Range All Screens Softkey ..............118 Y-Axis Autorange Softkey ..........112, 117, 185, 186 Y-Axis Range Softkey .............. 111, 187 Y-Axis Reference Position Softkey ............112, 184, 186 Y-Axis Reference Value Softkey ............112, 184, 186 Y-Axis Unit Softkey ..............

R&S FSV-K70 Manual

Table of Contents

Signal Model, Estimation and Modulation Errors

Result Types/Magnitude Absolute

Input:select

Frequency

[Sense:]Ddemod:search:burst:glength[:Minimum]

Screen X Active/Highlight Symbols

Remote Control Commands - R&S Fsv- K70

Suffix

Sense Subsystem

5 Status Reporting System (Option R&S FSV-K70)

6 Support

Formulae

Abbreviations

Quick Links

Chapters

Related Manuals for R&S FSV-K70

Summary of Contents for R&S FSV-K70

Table of Contents