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Programming

R&S

®

CMW-B400B/-B405A

51

User Manual 1176.8116.02 ─ 04

FETCh:AUDio:MEAS:ANALog:MULTitone:MAXimum?
FETCh:AUDio:MEAS:ANALog:STATe?

5.1.5 FFT Noise Measurement

The following example configures all settings specific for an FFT noise measurement,
starts the audio generator, starts the audio measurement and queries the measure-
ment results.

// *****************************************************************************
// Select FFT noise as signal type and couple the generator to a measurement.
// *****************************************************************************
SOURce:AUDio:GEN:ANALog:STYPe FFTNoise
SOURce:AUDio:GEN:ANALog:ACOupling ANAL

// *****************************************************************************
// Specify the level of the generated noise signal.
// *****************************************************************************
SOURce:AUDio:GEN:ANALog:FFTNoise:LEVel 3

// *****************************************************************************
// Configure the statistic count of the measurement.
// *****************************************************************************
CONFigure:AUDio:MEAS:ANALog:FFTNoise:SCOunt 14

// *****************************************************************************
// Configure the FFT noise measurement filters.
// *****************************************************************************
CONFigure:AUDio:MEAS:ANALog:FFTNoise:FILTer:LPASs OFF
CONFigure:AUDio:MEAS:ANALog:FFTNoise:FILTer:HPASs OFF
CONFigure:AUDio:MEAS:ANALog:FFTNoise:FILTer:WEIGhting OFF

// *****************************************************************************
// Switch on the audio generator. Wait until the command has been executed and
// query the generator state (should be ON). 
// *****************************************************************************
SOURce:AUDio:GEN:ANALog:STATe ON; *OPC?
SOURce:AUDio:GEN:ANALog:STATe?

// *****************************************************************************
// Start the audio measurement.
// Query the current FFT noise trace (Y-values) and the frequencies (X-values).
// Query the measurement state (should be RDY).
// *****************************************************************************
INITiate:AUDio:MEAS:ANALog
FETCh:AUDio:MEAS:ANALog:FFTNoise:CURRent?
FETCh:AUDio:MEAS:ANALog:FFTNoise:FREQuency?
FETCh:AUDio:MEAS:ANALog:STATe?

 

Audio Measurement and Generator Scenario

深圳德标仪器 

135-1095-0799

Содержание CMW-B400B

Страница 1: ...R S CMW B400B B405A Audio Measurements User Manual User Manual 1176 8116 02 04 Úß 2 Test Measurement 深圳德标仪器 135 1095 0799 ...

Страница 2: ...codec 2015 Rohde Schwarz GmbH Co KG Mühldorfstr 15 81671 München Germany Phone 49 89 41 29 0 Fax 49 89 41 29 12 164 E mail info rohde schwarz com Internet www rohde schwarz com Subject to change Data without tolerance limits is not binding R S is a registered trademark of Rohde Schwarz GmbH Co KG Trade names are trademarks of the owners The following abbreviations are used throughout this manual R...

Страница 3: ...ment and Generator 12 3 1 3 Test Setup for Microphone and Speaker Test 13 3 1 4 Test Setup for External Speech Analysis 14 3 2 Performing Audio Measurements 15 3 3 AF Filter Settings 16 3 4 Measurement Results 17 3 4 1 Single Tone Results 18 3 4 2 Multitone Results 20 3 4 3 FFT Noise Results 21 3 4 4 Modifying Diagrams 22 3 4 5 Using Markers 22 3 4 6 Common View Elements 23 4 GUI Reference 24 4 1 ...

Страница 4: ...rator Scenario 47 5 1 1 Reset and Scenario Selection 47 5 1 2 General Measurement Settings 48 5 1 3 Single Tone Measurement 48 5 1 4 Multitone Measurement 49 5 1 5 FFT Noise Measurement 51 6 Command Reference 52 6 1 Conventions and General Information 52 6 1 1 MEAS i and GEN i 52 6 1 2 FETCh and READ Commands 52 6 1 3 Current and Statistical Results 52 6 1 4 Keywords 53 6 1 5 Reliability Indicator...

Страница 5: ...ngs 78 6 3 8 FFT Noise Measurement Results 79 6 4 Audio Generators 82 6 4 1 Generator Control and States 82 6 4 2 General Generator Settings 82 6 4 3 Single Tone Generator Settings 83 6 4 4 Multitone Generator Settings 84 6 4 5 FFT Noise Generator Settings 90 6 5 Speech Analysis 90 List of Commands 93 Index 97 深圳德标仪器 135 1095 0799 ...

Страница 6: ...Contents R S CMW B400B B405A 6 User Manual 1176 8116 02 04 深圳德标仪器 135 1095 0799 ...

Страница 7: ...apters can be read independently of each other However they are all organized as follows 1 General Description 2 Application Sheets optional 3 GUI Reference 4 Programming Examples 5 Command Reference The chapters System Overview and Remote Control in the R S CMW user manual provide additional important information independent of the individual firmware applica tions The most important parts are re...

Страница 8: ...ist of comprehensive command sequences You can check just a single com mand of a sequence to get an example for the syntax of this single command But you can also consider an entire sequence showing the commands in the context of a com mand script under consideration of dependencies and required orders of the com mands The command sequences are written with the intention to list most commands of t...

Страница 9: ...gnaling applications The coupled application is now selected in the audio measurement settings see Speech Analysis Settings Event log and information provided by coupled master application see Speech Analysis Tab The clock of the audio board can be adjusted see Clock Drift Scenario selection improvements New commands one command per scenario see General Settings The scenario is selectable per audi...

Страница 10: ...nalyze the fre quency response of a DUT over the entire audio frequency range with a single measurement Two audio analyzer and generator options are available They provide the same test functionality Which option is required depends on your instrument Option R S CMW B400B Audio Analyzer Generator is compatible to R S CMW delivered after September 2011 It is also compatible to R S CMW delivered bef...

Страница 11: ...e filters and the measurement results 3 1 Test Setups The following sections provide an overview of the audio connectors and of typical test setups for the individual scenarios Audio Connectors 11 Test Setup for Audio Measurement and Generator 12 Test Setup for Microphone and Speaker Test 13 Test Setup for External Speech Analysis 14 3 1 1 Audio Connectors An R S CMW with an installed audio board ...

Страница 12: ...ment and Generator The scenario Audio Measurement and Generator generally involves both an audio generator and an audio measurement The generator provides an audio signal at an AF OUT or SPDIF OUT connector The signal is routed to the DUT passes the DUT and is routed back to an AF IN or SPDIF IN connector Then the signal is analyzed via the audio measurement The generator and the measurement are c...

Страница 13: ...basic funtional tests you can also use the handset R S CMW Z50 It provides a speaker and micro phone and can be connected to AF IN and AF OUT Additionally the DUT is connected to the R S CMW via an RF connection A signaling application is used to set up a speech connection to the DUT A speech codec is also required R S CMW B405A For speaker tests the digital audio generator provides an audio signa...

Страница 14: ...igned for external analysis of the speech quality of a mobile phone The typical test setup is similar to a Microphone and Speaker Test setup with the audio generators and measurements located in an external audio analyzer supporting speech quality analysis for example the R S UPV or the R S UPP The audio gener ators and measurements of the R S CMW do not support speech analysis and are not used So...

Страница 15: ... analog setup 3 2 Performing Audio Measurements The required settings vary depending on the used scenario the used type of audio test signal and the test setup components However the general procedure outlined below is applicable to all audio measure ments 1 Connect the components of your test setup see chapter 3 1 Test Setups on page 11 2 In the audio application main view at the top select a sce...

Страница 16: ...o board supports two audio application instances And each instance provides an analog generator a digital generator an analog measurement and a digital mea surement So in total there are four audio generators and four audio measure ments You can use all these resources in parallel for example to test several DUTs in parallel or to perform stereo tests If your test setup contains more than one acou...

Страница 17: ...s C message weighting filter defined in IEEE 743 This filter is used for North American telephone circuits Bandpass filter with configurable center frequency and bandwidth This filter can not be disabled and is only relevant for the single tone measurement result Band pass Level The following figure provides an overview of the filter positions in the input path and of the measurement points for th...

Страница 18: ...y see Filter Distortion Frequency on page 35 Distortion D sum of the signal powers of the 2nd 3rd 4th harmonics The R S CMW measures up to 10 harmonics at frequencies up to 21 kHz Noise N power of the noise floor The sum of all three components S N D is the total received audio power S and D can be obtained in frequency selective measurements To obtain the sum N D the R S CMW uses a notch filter t...

Страница 19: ...ut fundamental wave to the complete measured AF signal voltage in percent THD N sqrt N D sqrt S N D 100 SINAD Signal to Noise And Distortion ratio of the complete measured AF signal voltage to the measured AF signal with a notched out fundamental wave as dB value SINAD dB 20 log sqrt S N D sqrt N D SNR Signal to Noise Ratio ratio of the signal power to the noise power as dB value SNR dB 20 log sqr...

Страница 20: ...trum Off On on page 37 Fig 3 8 Single tone spectrum diagram The diagram shows the measured audio level vs the frequency The results are mea sured in the time domain and transformed to the frequency domain via a Fast Fourier Transformation FFT Prior to the FFT a configurable window function is applied to the raw data in order to reduce side effects of the FFT For selection of the window function se...

Страница 21: ...You can configure it via the softkey hotkey combination Display Multitone Result Mode or via the multitone settings of the measurement see Result Mode on page 38 To switch between the table view and the diagram view use the softkey hotkey combi nation Display Multitone View Diagr Table Fig 3 10 Multitone result table 3 4 3 FFT Noise Results For an FFT noise measurement an audio signal consisting o...

Страница 22: ... analyze the frequency response of a DUT in a single measurement 3 4 4 Modifying Diagrams To change the appearance and contents of a diagram press the Diagram softkey Then use the following hotkeys at the bottom of the GUI Depending on the diagram not all hotkeys are available Hotkey Description Trace Select the trace types to be displayed in the view X Scale Y Scale Modify the ranges of the X axi...

Страница 23: ... for all signal types Statistical results Result tables provide columns with a statistical evaluation of the results Some result diagrams provide a statistical evaluation via individual traces The statistical values are calculated as follows Current Cur Value of the result obtained in the last measurement interval Average Avg Average of all Current values referenced to the last statistics cycle Ex...

Страница 24: ... Settings 44 Additional Softkeys and Hotkeys 46 4 1 Main View The main view is divided into two parts At the top you select a scenario Below the scenario selection one or more tabs are displayed depending on the active scenario These tabs provide measurement results and display basic settings Fig 4 1 Main view with scenario Audio Measurement and Generator The scenario selection and the individual ...

Страница 25: ...ech codec is available the scenario is grayed out An external audio analyzer like the R S UPV is required to generate and analyze the audio test signal It is connected to the R S CMW via the AF connectors analog sce nario or SPDIF connectors digital scenario If supported by the external audio ana lyzer it is recommended to use the digital interface and scenario An R S CMW sig naling application co...

Страница 26: ...UDio i SCENario AMGenerator ROUTe AUDio i SCENario EASPeech ROUTe AUDio i SCENario EDSPeech ROUTe AUDio i SCENario MSTest ROUTe AUDio i SCENario ROUTe AUDio i SCENario CATalog MASTer 4 1 2 Analog Digital Meas Tab The Analog Meas tab and the Digital Meas tab are available for scenarios involving an internal audio measurement They show measurement results on the left and the most important generator...

Страница 27: ...um CURRent etc FETCh AUDio MEAS i ANALog MULTitone CURRent etc FETCh AUDio MEAS i ANALog FFTNoise CURRent etc FETCh AUDio MEAS i ANALog FFTNoise FREQuency etc Query of Digital Measurement Results The results of the digital measurement can be queried via the following remote com mands Remote command FETCh AUDio MEAS i DIGital SINGletone CURRent etc FETCh AUDio MEAS i DIGital SPECtrum CURRent etc FE...

Страница 28: ...led by on page 45 Speech Setup This area displays the settings configured in the audio configuration dialog box see chapter 4 5 Speech Analysis Settings on page 44 Event Log This area reports events and errors related for example to the speech codec initializa tion Each entry consists of a timestamp an icon indicating the category of the event and a short text describing the event Meaning of the c...

Страница 29: ...o turn an audio measurement on or off select the measurement softkey and press ON OFF or RESTART STOP on the soft frontpanel Analog Generator Digital Generator Softkeys Both softkeys are visible if an audio measurement tab is selected analog or digital They show the current states of the generators Remote command SOURce AUDio GEN i ANALog STATe SOURce AUDio GEN i DIGital STATe Analog Meas Softkey ...

Страница 30: ...ess the analog and digital measurement settings select the Analog Meas tab or the Digital Meas tab and press the Config hotkey The tabs are only displayed if the currently active scenario involves internal audio measurements and generators The following sections describe the Analog Meas and Digital Meas tabs of the con figuration dialog box Fig 4 4 Configuration dialog box for measurements and gen...

Страница 31: ...tal generator The coupling is configured within the generator settings see Analyzer Coupling on page 41 Remote command n a Routing Displays the input connector for the measured analog audio signal AF 1 IN or AF 2 IN This setting is not configurable Remote command n a Repetition Defines how often the measurement is repeated if it is not stopped explicitly or by a failed limit check Continuous The m...

Страница 32: ...ANALog SCONdition Statistic Counter Defines the number of measurement intervals per measurement cycle statistics cycle single shot measurement This value is also relevant for continuous measurements because the averaging procedures depend on the statistic count For audio measurements a single measurement interval is completed when the R S CMW has acquired a full set of results The statistic counts...

Страница 33: ...UDio MEAS i ANALog MLEVel 4 3 2 General Settings Digital The settings at the top of the Digital Meas tab apply to all digital measurements Fig 4 6 General digital measurement settings Coupled with 33 Routing 33 Repetition 34 Stop Condition 34 Statistic Counter 34 Coupled with Displays the coupling of the measurement to a generator The measurement can be used standalone Off or it can be coupled to ...

Страница 34: ... irrespective of the limit check results On Limit Failure The measurement is stopped as soon as one of the limits is exceeded irrespective of the repetition mode set If no limit failure occurs it is per formed according to its Repetition mode and Statistic Count Use this setting for measurements that are essentially intended for checking limits e g production tests Remote command CONFigure AUDio M...

Страница 35: ...ion Frequency The Distortion Frequency is the reference frequency of the single tone measurement Set this parameter to the fundamental frequency of the AF signal If the measurement is coupled to a generator the frequency configured within the generator settings is used and displayed here for information Remote command CONFigure AUDio MEAS i ANALog SINGletone FILTer DFRequency CONFigure AUDio MEAS ...

Страница 36: ...letone FILTer LPASs CONFigure AUDio MEAS i ANALog SINGletone FILTer HPASs CONFigure AUDio MEAS i ANALog SINGletone FILTer WEIGhting CONFigure AUDio MEAS i ANALog SINGletone FILTer BANDpass Digital measurement CONFigure AUDio MEAS i DIGital SINGletone FILTer LPASs CONFigure AUDio MEAS i DIGital SINGletone FILTer HPASs CONFigure AUDio MEAS i DIGital SINGletone FILTer WEIGhting CONFigure AUDio MEAS i...

Страница 37: ... grams on page 22 and chapter 3 4 5 Using Markers on page 22 Remote command n a 4 3 4 Multitone Settings The Multitone measurement displays the individual audio levels at up to 20 different test tones corresponding to 20 audio input frequencies The results can be presented in a bar graph or in a table The number of test tones included in the multitone signal and the frequencies of the individual t...

Страница 38: ...ngs configure the individual filter stages of the AF analyzer For a description of the filter types see chapter 3 3 AF Filter Settings on page 16 Remote command Analog measurement CONFigure AUDio MEAS i ANALog MULTitone FILTer LPASs CONFigure AUDio MEAS i ANALog MULTitone FILTer HPASs CONFigure AUDio MEAS i ANALog MULTitone FILTer WEIGhting Digital measurement CONFigure AUDio MEAS i DIGital MULTit...

Страница 39: ...of the filter types see chapter 3 3 AF Filter Settings on page 16 Remote command Analog measurement CONFigure AUDio MEAS i ANALog FFTNoise FILTer LPASs CONFigure AUDio MEAS i ANALog FFTNoise FILTer HPASs CONFigure AUDio MEAS i ANALog FFTNoise FILTer WEIGhting Digital measurement CONFigure AUDio MEAS i DIGital FFTNoise FILTer LPASs CONFigure AUDio MEAS i DIGital FFTNoise FILTer HPASs CONFigure AUDi...

Страница 40: ...s The screenhots in the following sections show the settings of the analog generator The settings of the digital generator are similar Settings that are configured for analog signals as voltages are configured for digital signals as full scale values General Settings 40 Single Tone Settings 41 Multitone Settings 41 FFT Noise Settings 44 4 4 1 General Settings The settings at the top of each genera...

Страница 41: ... GEN i ANALog ACOupling SOURce AUDio GEN i DIGital ACOupling 4 4 2 Single Tone Settings The following settings are specific for single tone signals Fig 4 12 Single tone generator settings Frequency 41 Level 41 Frequency Specifies the frequency of the single tone to be generated Remote command SOURce AUDio GEN i ANALog SINGletone FREQuency SOURce AUDio GEN i DIGital SINGletone FREQuency Level Speci...

Страница 42: ...Gital MULTitone CRESt Level Handling You can either specify the total signal level or an individual level for each tone Total level Select Use total level and specify the Total Level effective voltage or full scale value As a result all tones have the same level displayed for information in the list The sum of all individual levels equals the total level Individual levels Select Use separate level...

Страница 43: ... specifies the level of each tone depending on the configured Level Handling All entries must have different frequencies Remote command SOURce AUDio GEN i ANALog MULTitone TONE no TDEFinition SOURce AUDio GEN i ANALog MULTitone TDEFinition SOURce AUDio GEN i DIGital MULTitone TONE no TDEFinition SOURce AUDio GEN i DIGital MULTitone TDEFinition Tone List Hotkey If the signal type is set to Multiton...

Страница 44: ...ise LEVel SOURce AUDio GEN i DIGital FFTNoise LEVel 4 5 Speech Analysis Settings To access the speech analysis settings select the Speech Analysis tab and press the Config hotkey The tab is only displayed if the currently active scenario involves a speech codec Fig 4 15 Settings for speech analysis analog Fig 4 16 Settings for speech analysis digital Connector 45 Controlled by 45 Suppress Cell Off...

Страница 45: ... selected and the cell signal is on and you press ON OFF a warning can be displayed asking whether you really want to switch off the cell signal The checkbox suppresses the warning Remote command n a Input Level Full Scale Peak This setting configures the A D conversion in the signal input path It is only displayed if the speech codec is connected to AF connectors The value defines the peak voltag...

Страница 46: ...onnected to AF connectors Remote command CONFigure AUDio SPEech i ANALog FILTer HPASs 4 6 Additional Softkeys and Hotkeys The Speech Analysis tab of the audio measurement provides softkeys that are rela ted to the currently selected controlling master application While one of the softkeys is selected the Config hotkey opens the configuration dia log of the controlling application not the configura...

Страница 47: ...actually available before the next command line is executed The audio measurements are programmed as follows The measurements are controlled by SCPI commands with the following syntax analog measurements AUDio MEAS ANALog digital measurements AUDio MEAS DIGital After a RST the measurements are switched off Use READ AUDio MEAS ANALog DIGital to initiate a single shot measure ment and retrieve the r...

Страница 48: ...r starts the audio measurement and queries the measure ment results Select single tone as signal type and couple the generator to a measurement SOURce AUDio GEN ANALog STYPe SINGletone SOURce AUDio GEN ANALog ACOupling ANAL Configure the single tone frequency and level SOURce AUDio GEN ANALog SINGletone FREQuency 10000 SOURce AUDio GEN ANALog SINGletone LEVel 3 Configure the statistic count of the...

Страница 49: ...he audio measurement Query the average and extreme measurement results from the result table Query the spectrum trace Query the measurement state should be RDY INITiate AUDio MEAS ANALog FETCh AUDio MEAS ANALog SINGletone AVERage FETCh AUDio MEAS ANALog SINGletone EXTReme FETCh AUDio MEAS ANALog SPECtrum CURRent FETCh AUDio MEAS ANALog STATe 5 1 4 Multitone Measurement The following example config...

Страница 50: ...e CONFigure AUDio MEAS ANALog RTYPe Configure the statistic count of the measurement CONFigure AUDio MEAS ANALog MULTitone SCOunt 12 Set result mode absolute power results CONFigure AUDio MEAS ANALog MULTitone RMODe ABS Configure the multitone measurement filters CONFigure AUDio MEAS ANALog MULTitone FILTer LPASs LP15 CONFigure AUDio MEAS ANALog MULTitone FILTer HPASs H300 CONFigure AUDio MEAS ANA...

Страница 51: ...count of the measurement CONFigure AUDio MEAS ANALog FFTNoise SCOunt 14 Configure the FFT noise measurement filters CONFigure AUDio MEAS ANALog FFTNoise FILTer LPASs OFF CONFigure AUDio MEAS ANALog FFTNoise FILTer HPASs OFF CONFigure AUDio MEAS ANALog FFTNoise FILTer WEIGhting OFF Switch on the audio generator Wait until the command has been executed and query the generator state should be ON SOUR...

Страница 52: ...veral instances of the same firmware application It can be omitted if the instrument supports only one instance or to address the first instance See also Firmware Applications in the R S CMW user manual chapter Remote Control 6 1 2 FETCh and READ Commands All commands are used to retrieve measurement results FETCh returns the results of the current measurement cycle single shot mea surement after ...

Страница 53: ...y Firmware Software Indicates the lowest software version supporting the command Command enhancements in later software versions are also indicated 6 1 5 Reliability Indicator The first value in the output arrays of FETCh READ and CALCulate queries indicates the most severe error that has occurred during the measurement Example for an output array 0 10 22 10 15 10 01 10 29 100 reliability 0 follow...

Страница 54: ...ment could not be started because the R S CMW was not yet ready to deliver stable results after a change of the input signal power the input signal frequency 19 Call not Established For measurements The measurement could not be started because no signaling connection to the DUT was established For DAU IMS service Establishing a voice over IMS call failed 20 Call Type not Usable For measurements Th...

Страница 55: ... example for a ping request 52 Connection Error The DAU could not establish a connection to internal components Please restart the instrument 53 Configuration Error The current DAU configuration by the user is incomplete or wrong and could not be applied Check especially the IP address configuration 54 Filesystem Error The hard disk of the DAU is full or corrupt Please execute a DAU selftest 101 F...

Страница 56: ...he configured parameter set 6 2 General Settings The following commands configure general settings of the audio application independ ent of a specific audio measurement or audio generator ROUTe AUDio i SCENario AMGenerator 56 ROUTe AUDio i SCENario EASPeech 56 ROUTe AUDio i SCENario EDSPeech 57 ROUTe AUDio i SCENario MSTest 57 ROUTe AUDio i SCENario CATalog MASTer 57 ROUTe AUDio i SCENario 57 ROUT...

Страница 57: ...ker Test and selects the master appli cation Setting parameters Master String parameter selecting the master To query a list of possible values use ROUTe AUDio i SCENario CATalog MASTer Usage Event Firmware Software V3 5 10 Manual operation See Scenario selection via remote control on page 26 ROUTe AUDio i SCENario CATalog MASTer Returns a list of all possible master strings The used master applic...

Страница 58: ...nts Measurement Control and States 58 General Measurement Settings 60 Single Tone Measurement Settings 65 Single Tone Measurement Results 71 Multitone Measurement Settings 74 Multitone Measurement Results 76 FFT Noise Measurement Settings 78 FFT Noise Measurement Results 79 6 3 1 Measurement Control and States The following commands control an audio measurement and return the current mea surement ...

Страница 59: ...ingle Tone Measurement Usage Event Firmware Software V3 2 10 Manual operation See Digital Meas Softkey on page 29 FETCh AUDio MEAS i ANALog STATe FETCh AUDio MEAS i DIGital STATe Queries the main measurement state Use FETCh STATe ALL to query the measurement state including the substates Use INITiate STOP ABORt to change the measurement state See also Measurement Control in the R S CMW user manual...

Страница 60: ... pending or adjusted resources active or queued RST OFF SyncState PEND ADJ INV PEND waiting for resource allocation adjustment hardware switching pending ADJ all necessary adjustments finished measurement running adjusted INV not applicable because MainState OFF or RDY inva lid ResourceState QUE ACT INV QUE measurement without resources no results available queued ACT resources allocated acquisiti...

Страница 61: ... i DIGital RTYPe Queries the currently used or expected signal type resulting from the generator cou pling Return values ResultType SINGletone MULTitone FFTNoise Example See Multitone Measurement Usage Query only Firmware Software V3 2 10 Manual operation See Query of Signal Type on page 27 CONFigure AUDio MEAS i ANALog REPetition Repetition CONFigure AUDio MEAS i DIGital REPetition Repetition Spe...

Страница 62: ...re AUDio MEAS i ANALog SCOunt StatCountSing StatCountMult StatCountFFTN CONFigure AUDio MEAS i DIGital SCOunt StatCountSing StatCountMult StatCountFFTN Specifies the statistic counts for all audio signal types The statistic count is equal to the number of measurement intervals per single shot See also Statistical Settings in the R S CMW user manual chapter Remote Con trol Parameters StatCountSing ...

Страница 63: ... according to the average level of the measured AF signal plus an appropriate overload margin With disabled auto ranging you must configure the maximum expected AF input level see CONFigure AUDio MEAS i ANALog MLEVel Parameters AutoRanging OFF ON RST ON Example See General Measurement Settings Firmware Software V3 2 10 Manual operation See Auto Ranging Maximum Level on page 32 CONFigure AUDio MEAS...

Страница 64: ... ANALog FILTer HPASs FreqSingleTone FreqMultitone FreqFFTNoise CONFigure AUDio MEAS i DIGital FILTer HPASs FreqSingleTone FreqMultitone FreqFFTNoise Configures the cutoff frequency of the highpass filter for the individual audio signal types Parameters FreqSingleTone OFF H6 H50 H300 OFF highpass filter disabled H6 H50 H300 cutoff frequency 6 Hz 50 Hz or 300 Hz RST ANALog OFF DIGital H6 FreqMultito...

Страница 65: ...LPASs 66 CONFigure AUDio MEAS i DIGital SINGletone FILTer LPASs 66 CONFigure AUDio MEAS i ANALog SINGletone FILTer HPASs 67 CONFigure AUDio MEAS i DIGital SINGletone FILTer HPASs 67 CONFigure AUDio MEAS i ANALog SINGletone FILTer WEIGhting 67 CONFigure AUDio MEAS i DIGital SINGletone FILTer WEIGhting 67 CONFigure AUDio MEAS i ANALog SINGletone FILTer BANDpass 68 CONFigure AUDio MEAS i DIGital SING...

Страница 66: ...ngle Tone Measurement Firmware Software V3 2 10 Manual operation See Filter Distortion Frequency on page 35 CONFigure AUDio MEAS i ANALog SINGletone FILTer WFUNction WindowFunct CONFigure AUDio MEAS i DIGital SINGletone FILTer WFUNction WindowFunct Selects a window function for the single tone spectrum measurement Parameters WindowFunct RECT HAMM HANN BHAR FTOP RECT Rectangular window HAMM Hamming...

Страница 67: ...hpass filter disabled H6 H50 H300 cutoff frequency 6 Hz 50 Hz or 300 Hz RST ANALog OFF DIGital H6 Example See Single Tone Measurement Firmware Software V3 2 10 Manual operation See Filter Low Pass High Pass Weighting Variable Band pass on page 36 CONFigure AUDio MEAS i ANALog SINGletone FILTer WEIGhting Weighting CONFigure AUDio MEAS i DIGital SINGletone FILTer WEIGhting Weighting Configures the w...

Страница 68: ...operation See Filter Low Pass High Pass Weighting Variable Band pass on page 36 CONFigure AUDio MEAS i ANALog SINGletone LIMit WeightRmsUpp WeightRmsEnab BandRmsUpp BandRmsEnab THDPercUpp THDPercEnab THDPlusNUpp THDPlusNEnab SNRLow SNREnab Configures the limits for analog single tone measurements Parameters WeightRmsUpp Upper limit for weighted level RMS results Range 0 V to 5 V RST 5 V Default un...

Страница 69: ... dB SNREnab OFF ON Disables or enables the lower limit for SNR results RST OFF Example See Single Tone Measurement Firmware Software V3 2 10 Manual operation See Limits Analog Measurement on page 36 CONFigure AUDio MEAS i DIGital SINGletone LIMit WeightRmsUpp WeigtRmsEnab BandRmsUpp BandRmsEnab THDPercUpp THDPercEnab THDPlusNUpp THDPlusNEnab SNRLow SNREnab Configures the limits for digital single ...

Страница 70: ...ange 0 to 100 RST 0 5 Default unit THDPlusNEnab OFF ON Disables or enables the upper limit for THD N results RST OFF SNRLow Lower limit for SNR results Range 0 dB to 100 dB RST 54 dB Default unit dB SNREnab OFF ON Disables or enables the lower limit for SNR results RST OFF Example See Single Tone Measurement Firmware Software V3 2 10 Manual operation See Limits Digital Measurement on page 36 CONFi...

Страница 71: ... CURRent 72 FETCh AUDio MEAS i DIGital SINGletone AVERage 72 FETCh AUDio MEAS i DIGital SINGletone EXTReme 72 FETCh AUDio MEAS i DIGital SINGletone SDEViation 72 READ AUDio MEAS i DIGital SINGletone CURRent 72 READ AUDio MEAS i DIGital SINGletone AVERage 72 READ AUDio MEAS i DIGital SINGletone EXTReme 73 READ AUDio MEAS i DIGital SINGletone SDEViation 73 FETCh AUDio MEAS i ANALog SPECtrum CURRent ...

Страница 72: ...t unit 5_SINAD Range 0 dB to 150 dB Default unit dB 6_SNR Range 0 dB to 150 dB Default unit dB 7_DCLevel Range 64 V to 64 V Default unit V 8_Frequency Range 0 Hz to 200E 3 Hz Default unit Hz 9_WeightLevRMS Weighted level RMS result Range 0 V to 64 V Default unit V 10_BandLevRMS Bandpass level RMS result Range 0 V to 64 V Default unit V Example See Single Tone Measurement Usage Query only Firmware ...

Страница 73: ...r 2_THDPercent THD result as percentage Range 0 to 100 Default unit 3_THDdB THD result as dB value Range 150 dB to 0 dB Default unit dB 4_THDPlusN THD N result Range 0 to 100 Default unit 5_SINAD Range 0 dB to 150 dB Default unit dB 6_SNR Range 0 dB to 150 dB Default unit dB 7_WeightLevRMS Weighted level RMS result Range 0 FS to 1 FS Default unit FS 8_BandLevRMS Bandpass level RMS result Range 0 F...

Страница 74: ...rmware Software V3 2 10 6 3 5 Multitone Measurement Settings The following commands configure multitone measurements CONFigure AUDio MEAS i ANALog MULTitone SCOunt 74 CONFigure AUDio MEAS i DIGital MULTitone SCOunt 74 CONFigure AUDio MEAS i ANALog MULTitone RMODe 75 CONFigure AUDio MEAS i DIGital MULTitone RMODe 75 CONFigure AUDio MEAS i ANALog MULTitone FILTer LPASs 75 CONFigure AUDio MEAS i DIGi...

Страница 75: ...s relative to the level of test tone 20 RST ABS Example See Multitone Measurement Firmware Software V3 2 10 Manual operation See Result Mode on page 38 CONFigure AUDio MEAS i ANALog MULTitone FILTer LPASs Frequency CONFigure AUDio MEAS i DIGital MULTitone FILTer LPASs Frequency Configures the cutoff frequency of the lowpass filter for multitone measurements Parameters Frequency OFF LP3 LP4 LP15 OF...

Страница 76: ...l operation See Filter on page 38 6 3 6 Multitone Measurement Results The following commands return the results of multitone measurements FETCh AUDio MEAS i ANALog MULTitone CURRent 77 FETCh AUDio MEAS i ANALog MULTitone AVERage 77 FETCh AUDio MEAS i ANALog MULTitone MAXimum 77 FETCh AUDio MEAS i ANALog MULTitone SDEViation 77 READ AUDio MEAS i ANALog MULTitone CURRent 77 READ AUDio MEAS i ANALog ...

Страница 77: ...imum equals the width of the indicated range divided by two Exceptions are explicitly stated Return values Reliability Reliability Indicator Level_0 Level_19 Audio levels measured at the frequencies of the test tones Range 150 dB to 150 dB or 150 dBV to 36 dBV Default unit dB or dBV Example See Multitone Measurement Usage Query only Firmware Software V3 2 10 FETCh AUDio MEAS i DIGital MULTitone CU...

Страница 78: ... i ANALog FFTNoise FILTer LPASs 78 CONFigure AUDio MEAS i DIGital FFTNoise FILTer LPASs 78 CONFigure AUDio MEAS i ANALog FFTNoise FILTer HPASs 79 CONFigure AUDio MEAS i DIGital FFTNoise FILTer HPASs 79 CONFigure AUDio MEAS i ANALog FFTNoise FILTer WEIGhting 79 CONFigure AUDio MEAS i DIGital FFTNoise FILTer WEIGhting 79 CONFigure AUDio MEAS i ANALog FFTNoise SCOunt StatisticCount CONFigure AUDio ME...

Страница 79: ...0 H300 cutoff frequency 6 Hz 50 Hz or 300 Hz RST ANALog OFF DIGital H6 Example See FFT Noise Measurement Firmware Software V3 2 10 Manual operation See Filter on page 39 CONFigure AUDio MEAS i ANALog FFTNoise FILTer WEIGhting Weighting CONFigure AUDio MEAS i DIGital FFTNoise FILTer WEIGhting Weighting Configures the weighting filter for FFT noise measurements Parameters Weighting OFF AWEight CCITt...

Страница 80: ...l FFTNoise FREQuency 81 FETCh AUDio MEAS i ANALog FFTNoise CURRent FETCh AUDio MEAS i ANALog FFTNoise AVERage FETCh AUDio MEAS i ANALog FFTNoise MAXimum READ AUDio MEAS i ANALog FFTNoise CURRent READ AUDio MEAS i ANALog FFTNoise AVERage READ AUDio MEAS i ANALog FFTNoise MAXimum Returns the current average and maximum traces of an analog FFT noise measure ment The Y values of the traces are returne...

Страница 81: ...es of the traces are returned To query the X values of the traces see READ AUDio MEAS i DIGital FFTNoise FREQuency Return values Reliability Reliability Indicator Level Comma separated list of values one level value Y value for each trace point Range 150 dBFS to 0 dBFS Default unit dBFS Example See FFT Noise Measurement Usage Query only Firmware Software V3 2 10 FETCh AUDio MEAS i DIGital FFTNoise...

Страница 82: ...Generator Control in the R S CMW user manual chapter Remote Con trol Setting parameters Control ON OFF Switch generator ON or OFF Return values GenState OFF PENDing ON OFF generator switched off PEND generator switched on but no signal available yet ON generator switched on signal available RST OFF Example See Single Tone Measurement Firmware Software V3 2 10 Manual operation See Analog Generator ...

Страница 83: ...ling ANAL analog measurement DIG digital measurement RST OFF Example See Single Tone Measurement Firmware Software V3 2 10 Manual operation See Analyzer Coupling on page 41 6 4 3 Single Tone Generator Settings The following commands configure single tone signals SOURce AUDio GEN i ANALog SINGletone FREQuency 83 SOURce AUDio GEN i DIGital SINGletone FREQuency 83 SOURce AUDio GEN i ANALog SINGletone...

Страница 84: ...oftware V3 2 10 Manual operation See Level on page 41 6 4 4 Multitone Generator Settings The following commands configure multitone signals SOURce AUDio GEN i ANALog MULTitone CRESt 85 SOURce AUDio GEN i DIGital MULTitone CRESt 85 SOURce AUDio GEN i ANALog MULTitone LSELection 85 SOURce AUDio GEN i DIGital MULTitone LSELection 85 SOURce AUDio GEN i ANALog MULTitone TLEVel 85 SOURce AUDio GEN i DIG...

Страница 85: ...election TLEV SEP TLEV All tones have the same level To configure the total level see SOURce AUDio GEN i ANALog MULTitone TLEVel SOURce AUDio GEN i DIGital MULTitone TLEVel SEP The level of each tone is configured separately see SOURce AUDio GEN i ANALog MULTitone TONE no TDEFinition SOURce AUDio GEN i DIGital MULTitone TONE no TDEFinition RST TLEV Example See Multitone Measurement Firmware Softwa...

Страница 86: ...r method SEP a setting command is ignored and a query returns the total level resulting from the levels of the individual tones For method configuration see SOURce AUDio GEN i DIGital MULTitone LSELection Parameters TotalLevel Range 0 FS to 1 FS RST 1 FS Default unit FS Example See Multitone Measurement Firmware Software V3 2 10 Manual operation See Level Handling on page 42 SOURce AUDio GEN i ANA...

Страница 87: ... TDEFinition Frequency Level Configures a selected tone of the multitone list of the digital generator Suffix no 1 20 Selects the tone Parameters Frequency Frequency of the tone All tones must have different frequencies Range 0 Hz to 21E 3 Hz RST 1000 no Default unit Hz Level Level of the tone For method SEP the level can be set and queried For method TLEV the level of a setting command is ignored...

Страница 88: ...nored and a query returns the level resulting from the total multitone signal level For method selection see SOURce AUDio GEN i ANALog MULTitone LSELection The total level of the multitone signal must not exceed 5 V Range 0 V to 5 V RST 0 05 V Default unit V Example See Multitone Measurement Firmware Software V3 2 10 Manual operation See List on page 43 SOURce AUDio GEN i DIGital MULTitone TDEFini...

Страница 89: ...og MULTitone STARt StartIndex SOURce AUDio GEN i DIGital MULTitone STARt StartIndex Specifies the first tone of the multitone list that shall be used The value must be equal or less than the configured stop index Parameters StartIndex Range 1 to 20 RST 1 Example See Multitone Measurement Firmware Software V3 2 10 Manual operation See List Section on page 43 SOURce AUDio GEN i ANALog MULTitone STOP...

Страница 90: ...EN i DIGital FFTNoise LEVel Level Specifies the level of a digital FFT noise signal Parameters Level Range 0 FS to 1 FS RST 1 FS Default unit FS Example See FFT Noise Measurement Firmware Software V3 2 10 Manual operation See Level on page 44 6 5 Speech Analysis This section describes the commands related to the Speech Analysis tab scenarios with speech codec SENSe AUDio SPEech i ELOGging ALL 90 S...

Страница 91: ...ueries the latest entry of the event log Return values Timestamp Timestamp of the entry as string in the format hh mm ss Cateqory INFO WARNing ERRor CONTinue Category of the entry as indicated in the main view by an icon Description Text string describing the event Usage Query only Firmware Software V3 5 10 Manual operation See Event Log on page 28 CONFigure AUDio SPEech i ANALog ILEVel InputLevel...

Страница 92: ...e AUDio SPEech i CDRift ClockDrift Adjusts the clock of the audio board Parameters ClockDrift Range 100 ppm to 100 ppm RST 0 ppm Default unit ppm Additional parameters OFF ON disables enables the clock adjustment Firmware Software V3 5 10 Manual operation See Clock Drift on page 46 CONFigure AUDio SPEech i ANALog FILTer HPASs Frequency Configures the cutoff frequency of the highpass filter located...

Страница 93: ...re AUDio MEAS i ANALog SINGletone FILTer DFRequency 66 CONFigure AUDio MEAS i ANALog SINGletone FILTer HPASs 67 CONFigure AUDio MEAS i ANALog SINGletone FILTer LPASs 66 CONFigure AUDio MEAS i ANALog SINGletone FILTer WEIGhting 67 CONFigure AUDio MEAS i ANALog SINGletone FILTer WFUNction 66 CONFigure AUDio MEAS i ANALog SINGletone LIMit 68 CONFigure AUDio MEAS i ANALog SINGletone SCOunt 65 CONFigur...

Страница 94: ...Dio MEAS i ANALog SINGletone CURRent 71 FETCh AUDio MEAS i ANALog SINGletone EXTReme 71 FETCh AUDio MEAS i ANALog SINGletone SDEViation 71 FETCh AUDio MEAS i ANALog SPECtrum CURRent 73 FETCh AUDio MEAS i ANALog STATe ALL 60 FETCh AUDio MEAS i ANALog STATe 59 FETCh AUDio MEAS i DIGital FFTNoise AVERage 81 FETCh AUDio MEAS i DIGital FFTNoise CURRent 81 FETCh AUDio MEAS i DIGital FFTNoise FREQuency 8...

Страница 95: ...CENario CATalog MASTer 57 ROUTe AUDio i SCENario EASPeech 56 ROUTe AUDio i SCENario EDSPeech 57 ROUTe AUDio i SCENario MSTest 57 ROUTe AUDio i SCENario 57 SENSe AUDio SPEech i ELOGging ALL 90 SENSe AUDio SPEech i ELOGging LAST 91 SOURce AUDio GEN i ANALog ACOupling 83 SOURce AUDio GEN i ANALog FFTNoise LEVel 90 SOURce AUDio GEN i ANALog MULTitone CRESt 85 SOURce AUDio GEN i ANALog MULTitone LSELec...

Страница 96: ...8116 02 04 SOURce AUDio GEN i DIGital SINGletone FREQuency 83 SOURce AUDio GEN i DIGital SINGletone LEVel 84 SOURce AUDio GEN i DIGital STATe 82 SOURce AUDio GEN i DIGital STYPe 83 STOP AUDio MEAS i ANALog 58 STOP AUDio MEAS i DIGital 59 深圳德标仪器 135 1095 0799 ...

Страница 97: ...L Level Handling Audio generator 42 Limits Audio measurements 36 List Section Audio generator 43 M Marker Audio measurement 22 Maximum Level Audio measurements 32 O Output Level Full Scale Audio measurements 45 P Path Coupling Audio measurements 32 Programming Audio generator 47 Audio measurement 47 R Repetition Audio measurements 31 34 Result Mode Audio measurements 38 results Audio measurement 1...

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