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Fluke PM-3384B, PM-3380B Selects relative MATH2-FFT calculation, Selects MATH2-FFT-HANNing window

Models: PM-3394B PM-3390B PM-3370B PM-3380B PM-3384B

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COMMAND REFERENCE

4 - 39

Example:

Send → CALCulate2:TRANsform:FREQuency:TYPE RELative

Selects relative MATH2-FFT calculation.

Send → CALCulate2:TRANsform:FREQuency:WINDow HANNing

Selects MATH2-FFT-HANNing window.

Send → CALCulate2:TRANsform:FREQuency:STATe ON

Switches MATH2-FFT on.

Front panel compliance:

The CALCulate1 and CALCulate2 commands use the MATH1 and MATH2 features of the CombiScope instrument.

Image 139

Fluke PM-3384B, PM-3380B Selects relative MATH2-FFT calculation, Selects MATH2-FFT-HANNing window, Switches MATH2-FFT on

Contents

Qvwuxphqw Trademarks About this Manual What this Manual Contains IIIInitializing the CombiScope Instrument Measuring Signal Characteristics 15.1.2 15.4.2 Error-reporting using the SRQ mechanismReadout of measurement data 15.1.1Application Program Examples . . . . . . . . . . . . . A-1 Command ReferenceVII About this Manual What this Manual ContainsAbout this Manual Programming environment System setupPreparations for Scpi Programming Getting Started with Scpi ProgrammingConstant -1 Ffff hex CommandCommands AddresslistProgramming Note Program ExampleInitializing the CombiScope Instrument How to reset the CombiScope instrumentHow to identify the CombiScope instrument How to switch between digital and analog mode’Requests for error Error ReportingExample Acquiring TracesChannels and memory registers Example Send -- FORMat INT,16 Format of the trace response data is as followsPreparations How to acquire a single shot traceThis string data Connect a probe from the Probe Adjust signal to channel How to acquire repetitive tracesINITiate + FETCh? Measuring Signal CharacteristicsCONFigure + READ? MEASure?How to make repeated measurements How to make a single shot measurementIntroduction Using the Combiscope InstrumentsUsing the Combiscope Instruments RCL Fundamental Programming ConceptsTRACe? CH1 SAVSYSTemKEY DISPlayMENU TRIGgerMeasurement instructions Explanation of the Instrument Model Single function programming using the instrument modelRead ← blockdata Instrument setup Instrument setupFront panel simulation MEASureAC? MEASure? queryVoltageparameters = expectedvoltage,resolution Benefits of using parametersGeneric form of a measurement instruction is as follows MEASureVOLTageFREQuency? 10E6, @3 ExamplesMEASureAMPLitude? MEASureVOLTageAMPLitude? 10, @2Waveform measurements Pulse characteristicsFTIMe = alias for Falltime RTIMe = alias for Risetime MEASureFALLTIME? @3MEASureRISETIME? 20,80 MeasurefunctionmeasureparametersSENSeAVERageCOUNT Customizing settingsCONFigureAC SENSeAVERage onREADRISEOVERshoot? CONFigureRISETIMEMultiple measurements Starts a Next acquisition Returns New Frequency result Multiple characteristics from a single acquisitionREADFREQuency? Starts Acquisition ReturnsFETChAC? Trigger control via GpibTRIGgerSOURce BUS INITiateM12,CH2 Fetching characteristics from memory tracesAcquisition control AcquisitionUsing the Combiscope Instruments Trigger Level TriggeringTrigger Type Trigger SourceTrigger Coupling Trigger SlopeDC Coupling DC Coupling 0 Hz cutoff frequencyAC Coupling 10 Hz cutoff frequency HF-REJECT 30 KHz cutoff frequency LF-REJECT 30 KHz cutoff frequencyVideo triggering Secam NtscLines per frame PALBUS Trigger modesOFF LineState Description CommandsTrace Pre- and post-triggeringExternal triggering 10 The trace acquisition flow Reading trace acquisitionsRepetitive acquisitions Single-shot acquisition11 Relation between screen position and trace value Conversion of trace data’Array of 512 integers Byte1 = ASCMID$response$, J For 8-bit sample traces Ps = TsPs = Ts / 25600 * 100 = Ts ’1-byte samples Using the Combiscope Instruments Program ExampleAVGn = ∑X1 + .. + Xn ⁄ n Averaging Acquisition Data13 The Trigger Model during acquisition averaging Programming tip Channel Selection1 AC/DC/ground coupling Signal ConditioningVertical range and offset Input filteringInput impedance Input polarityAutoranging attenuators Vs = Ts / 200 * PTPeak OFFSetLimitation MTB = 50 * SENSeSWEepTIME / TRACePOINts Time Base ControlNumber of samples Time base speedReal time acquisition Ts = sampleindex * SENSeSWEepTIME / TRACePOINtsAutoranging time base 16 Definition of a signal periodSend → CALCulateFEED M21 ’M21 = source for CALC1 How to do post processingPost Processing Select the source for the post processing functionOptional Standard AvailableMathematical calculations MathExample Send → TRACe? M21 Check the result of the post processing functionRead ← tracebuffer ’Reads M21 trace Differentiating and integrating traces Mathematical calculationsRelative FFT Frequency domain transformationsAbsolute FFT For 16-bit samples Ps = Ts 25600 Trace Point ValuesTrace data Example for attenuator setting 0.5 V/div This can be calculated as a signal levelVrms offset calculation DBμV = 1 μV 1.0E-6 V at 50Ω impedance DBm 50Ω offset calculationDBm 600Ω offset calculation DBμV offset calculationTrace Point Frequencies SettingFs = sampleindex * 1250 / TRACePOINts * MTB Program Example Amplitude belt = peak-to-peak range Histogram functionsFrequency filtering 20 Trace memory control Trace MemoryTrace formatting Channels Memory Registers StandardPM33x0B 512 +EXT ExtendedCopying traces to memory Read ← trace block Writing data to trace memorySend → TRACe? CH3 ’Queries for CH3 traceReading data from trace memory Menu Screen/Display FunctionsBrightness control Display functionsDescription Measurement ValueMEAS1/MEAS2 Data Meastype,measvalue,suffixunitType Unit Description Cursors DataMath FFT Data Call Send0, 8, DISPlayMENU MEASure Program Example 2 text as block data Display of user-defined textSelection of softkey menus Hplaser Print/Plot FunctionsDevice Type Hpgl22 Hardcopy of screen on printer/plotter Auto Calibration Real-Time Clock= okay Status data for the CombiScope instruments Status ReportingRANGing Digital modeOperation status data CALibratingCALibration TEMPeratureQuestionable status data VOLTageStatus Register Data Structure Preset Value How to reset the status dataProgram example using the status byte STB How to enable status reporting’Defines SRQ-routine Error-reporting routine How to report errors’Sends error query How to save/restore a setup via the Gpib controller Saving/Restoring Instrument SetupsHow to restore initial settings How to save/restore a setup via instrument memoryRow 801 How to simulate the pressing of a front panel keyFront Panel Simulation Row 201Autoset Simulation How to simulate the operation of a softkey menuMULTiple-shot Functions not Directly ProgrammableEnvelope DISPlayMENU ACQuireSYSTemKEY 3 toggles on/offTerminal symbols Syntax specification notationsMeta symbols Non-terminal symbolsMEASureVOLTageDC? is the same DefaultNot contain the message element Between the square brackets, withoutAn explicit decimal point and may or may not be Data typesPreceded by a sign, e.g ’This also’ Bit codesDouble quotes Examples This is a stringCommand Summary Gate FeedDATA? Command Reference ParametersMenu Name StateRead Auto TYPE?Bits DTRRTS BaudType PAL Secam Ntsc Hdtv ALLReferencelow ,referencehigh,expectedtime Expectedvoltage ,resolutionTimeresolution Measurefunction MeasureparametersCommand Descriptions Front panel compliance ErrorsSpecifies the compliance with front panel operations Limitation CAL? CALibrationSyntax *CAL? Response 0 Calibration okay Calibration not okayClear Status 16COMMAND Reference*ESE #H11 Event Status EnableByte Register. Alternative commands *ESE #B10001 Ation Complete bits to be summarized in the StatusPON URQ CME EXE DDE QYE RQC OPC ESR 18COMMAND ReferenceEvent Status Register Response Integer DescriptionSyntax *IDN? IDN? IdentificationRestrictions 20COMMAND ReferenceOperation Complete Query form *OPC? Response DescriptionIeee EXT EM MP OPT? Option identification22COMMAND Reference Recall instrument setupSyntax RCL numericdata Description Function Default Settings RST ResetSyntax *RST Description Cursors Beeper Hardcopy Print & Plot Plotter Hpgl Pass/Fail testingMeasure 1 Math 1Syntax SAV numericdata Description Save instrument setup26COMMAND Reference Service Request EnableRequest Enable Register Syntax STB? Response Integer Description STB? Status ByteSyntax *TRG Description TRG TriggerSyntax *TST? Response 0 TST? Self-testSelf-test okay Self-test not okay Command Reference Aborts the current acquisition Configures for AC-RMS valueABORt Syntax ABORt DescriptionCALCulatenDERivativePOINts CALCulatenDERivativeSTATe Switches the differentiateFunction on CALCulatenFEED Filter function turned off Filter function turned on Integrate function turned off Integrate function turned on CALCulatenINTegralSTATeCALCulatenMATHEXPRession Switches MATH2 function onCALCulatenMATHSTATe Switches MATH1 function onResponse ABS REL Query form CALCulatenTRANsformFREQuencyTYPE?Selects relative MATH2-FFT calculation Switches MATH2-FFT onSelects MATH2-FFT-HANNing window CALCulatenTRANsformHISTogramSTATe SwitchesHistogram function turned off Histogram function turned on Syntax CALibrationALL Query form CALibrationALL? CALibrationALLResponse 0 Description Reads condition register Starts auto calibrationConditions Syntax CONFigureVOLTagemeasurefunction CONFigureSyntax elements are specified with the MEASure? query Initiates + fetches AC-RMS Signal on channelExpected voltage 600 mV Channel 2 AC coupledNR30.00E00 .. .00E00 DISPlayBRIGhtnessQuery form DISPlayBRIGhtness? MINimum MAXimum Response NR3DISPlayMENUNAME DISPlayMENUSTATe Switches TB Mode menu display onDisplay turned off Display turned on Response is peak-peak value of 608.4 mV MEAS1 Type Analog Mode Digital ModeDISPlayWINDow1TEXTnDATA? Syntax DISPlayWINDow1TEXTnDATA?Display on Clears all user text DISPlayWINDow2TEXT1CLEarCharacter byte DISPlayWINDow2TEXT1DATAAs text Sends 25 decimalCommand Reference DISPlayWINDow2TEXT1STATe Voltageparameters, measureparameters 54COMMAND ReferenceFETCh? FETChVOLTagemeasurefunction?Restrictions Acquisition INT,8 FORMatDATAHCOPyDATA? HCOPyDEVice Response 1 INITiateCONTinuousSingle shot acquisition INITiateIMMediateSyntax INITiateIMMediate Trigger level becomesINPutnCOUPling Common low pass filter off Common low pass filter on INPutnFILTerLPASsSTATe INPutnFILTerLPASsFREQuency?Response 2.00E+07 Query form INPutnFILTerLPASsSTATe?INPutnIMPedance After a *RST command, the impedance is 1 MΩSyntax INPutnIMPedance NRf MINimum MAXimum 1E6 Response Norm INV Description INPutnPOLarityAnal INSTrumentNSELect INSTrumentSELectResponse DIG Anal DIGChannellist = MEASure?Measurefunction measureparameters High FalltimeRatio percentage of the positive width PWIDth Signal. The peak to peak value is the difference betweenFirst falling edge equals the REFerence MIDDle until PDUTycycle ReferencemiddleMeasureparameters RisetimePeriodresolution = NRf DEFault Executed. The unit of timeresolution is secondFrequencyresolution = NRf DEFault Referencemiddle is volt Expectedperiod = NRf DEFaultLimitations Description Syntax READVOLTagemeasurefunction? 74COMMAND ReferenceExample SENSeAVERageSTATe Initiates trace averaging SENSeAVERageCOUNt SENSeAVERageTYPE?Syntax SENSeAVERageCOUNt NRf 8 16 SENSeAVERageTYPE? Response ScalAddition of channel i+j is off Addition of channel i+j is on SENSeFUNCtionOFF SENSeFUNCtionON SENSeFUNCtionSTATe?Limitations SENSeSWEepOFFSetTIME SENSeSWEepPDETectionSTATe Reads AC-RMS Real-time mode switched off Real-time mode switched onSENSeSWEepREALtimeSTATe Slope = either pos. or negBase range is limited to 10 μs non-alternating time base MTB values in the digital modeSENSeSWEepTIME Query form SENSeSWEepTIME? MINimum MAXimumRequests nr of trace points Coupled valuesRequests sweep time Reads sweep timeSets autoranging MTB on Autoranging MTB switched off Autoranging MTB switched onSENSeSWEepTIMEAUTO Sets trigger source CH1Autoranging CH2 Switches CH1 onSwitches CH2 on SENSeVOLTagenDCRANGeAUTOChannel SENSeVOLTagenDCRANGeOFFSetQuery form SENSeVOLTagenDCRANGePTPeak? MINimum MAXimum SENSeVOLTagenDCRANGePTPeakTrigger source = Peak-to-peak =Sensitivity = 0.8 / 8 = 100 mV/divResponse NR1 Description BIT Decimal Meaning Number Value Status Register Filter / Enable Preset Value STATusPRESetSyntax STATusPRESet Following table defines the effect of STATusPRESetResponse NR1 Description Enables report of TEMPerature within allowed limits 1 TEMPerature too high or too lowReturned value 16 equals bit 4 set temperature too high/low Enables report of TEMPerature too high/low 0350,Queue overflow No errorError number is -222 and the meaning is Data out of range STATusQUEueNEXT?SYSTemBEEPer SYSTemBEEPerSTATe Beeper disabled Beeper enabledReads the error queue Beeps on errorResponse on Stan Wire controlStan Response 7 XONNone Even ODD NoneBecomes Response XON NoneNo X-on/X-off handshaking 1200Sets the system date to Nov 7 SYSTemDATESYSTemERRor? Response NR1 SYSTemKEYFront Panel KEY Returns the last key simulation Enables Utility softkey menuSYSTemSET Nodenr nodelength firstbyte ... lastbyte SYSTemTIME Response YYYY.V *RST command doesn’t change the current Scpi versionSYSTemVERSion? Syntax SYSTemVERSion?TRACeCOPY Response definiteblock TRACeDATAInitiates single acquisition Reads peak-to-peak Requests channel 1 traceReads channel 1 trace Queries peak-to-peakTRACePOINts Requests M23 trace Number of trace points for allReads M23 trace Low-pass filter active High-pass filter active HF-reject Pass BooleanSets high-pass filter off Sets high-pass filter onLow-Pass filter off Automatically switchesFilter Frequency LOW-PASS on HIGH-PASS on DC coupling HF-reject AC coupling KHz LF-rejectTRIGgerSTARtFILTerLPASsSTATe Boolean TRIGgerSEQuence1FILTerLPASsFREQuency NRfTRIGgerSEQuence1FILTerLPASsSTATe Boolean TRIGgerSTARtFILTerLPASsFREQuency NRfFrequency LOW-PASS on HIGH-PASS on FilterSets cutoff frequency = 30 KHz TRIGgerSEQuence1HOLDoff TRIGgerSTARtHOLDoff TRIGgerSTARtLEVelAUTO Boolean TRIGgerSEQuence1LEVel NRf MINimum MAXimumTRIGgerSEQuence1LEVelAUTO Boolean TRIGgerSTARtLEVel NRf MINimum MAXimumTrigger level becomes 0.2 Trigger source BecomesChannel Continuous initiation Div. sensitivityNEG After a *RST command, the trigger slope is POSitiveTRIGgerSEQuence1SLOPe TRIGgerSTARtSLOPe POSRising and negative falling Configures AC-RMS CH2Sets real-time mode on Triggering is done at positiveIMM TRIGgerSEQuence1SOURce TRIGgerSTARtSOURceEXT Single initiation Configures AC-RMS CH1Input channel 1 becomes Trigger sourceEdge TRIGgerSEQuence1TYPE TRIGgerSTARtTYPESelects edge triggering Numb Selects lines triggeringSelects video line Linenr = linenr + 625/2 linenr = linenr 625/2Selects TV video Selects video linesScam Secam Secam Ntsc HdtvScam Lines/frame Selects Hdtv SelectsLines/frame Selects Lines/frame Selects SecamResponse POS NEG Positive video signal polarity selectedPAL or Secam From 1 to 123 Selects Negative Video Signal polarityError reporting is invoked as follows Call errorcheck Making a Hardcopy of the Screen Pass/Fail TestingApplication Program Examples Application program Making automatic measurementsApplication summary FETChNWIDth?’Termination Receive on EOI Making programmed measurements Reading measurement values Acquiring Waveform TracesSave/recall settings to/from internal memory Saving/Recalling Instrument SetupsApplication summary Application program CombiScope Instrument Making a Hardcopy of the ScreenIeee Saving a pass/fail test setup Pass/Fail TestingApplication program Restoring a pass/fail test setup DISPlayMENU MEASure Running a pass/fail testCross References Cross Reference Front Panel Keys / CommandsChannel 4 is external trigger input for PM33x0B Page Acquire menu Cross Reference Softkey Menus / CommandsCursors menu Programmable with the *SAV/*RCL and Systset commandsExt instead of ch4 for PM33x0B Display menuOther functions with RCL/SAV and Systset Mathplus Math menuYes no Page DTB DEL’D TB menu Measure menuSAVE/RECALL menu Setups menuSystset RCL/SAV TB Mode menuTrigger menu Analog ModeLogic Utility menu WireIeee Inpfilt Onoff INP1IMP INP2IMP INP3IMP INP4IMP Vertical menuCross Reference Functions / Commands Calibration Autocal Function + KEYS/MENUS Related Scpi Commands AutosetAverage BW LimitDifferentiate Mathplus DelayDelay Measurement Delayed Timebase DEL’D TBCH1 FFT ON/OFFHistogram Mathplus Hold OFFMain Time Base Integrate MathplusLogic Trigger Magnify HorizontalMeasure Menu Function + KEYS/MENUS Related Scpi Commands MathematicsPass Fail Testing Mathplus SAV, *RCL Power SupplyProbe Utilities Remote Control IEEE-488.2Remote Setup Remote Control RS-232Text OFF Function + KEYS/MENUS Related Scpi CommandsStatus Screen Subtract MathematicsRoll TrigSingle MultiTrigger Main TB Trigger CouplingTrigger DEL’D TB Trigger LevelUtil Menu User TextUtil Screen & Sound DISPlayWINDow1TEXT12DATA? Abbreviations Used IFC IDYIDN IECRQS Manual Conventions RAMREN RQCList of Tables Glossary of Symbols Used4MANUAL Conventions List of Figures Documents Referenced Or abbreviation, e.g., type = Hdtv TRIGgerSEQuence1 STARtVIDeoFORMatTYPE type command PurposeScpi Conformance Information Standards InformationList of Implemented IEEE-488.2 Syntactical Elements Program Header Separator Command Program HeaderStandards Information Program Message Unit Separator Program Data SeparatorCommon vertical settings End node settingsChannel 1/2/3/4 settings Probe scale settingsCursor autosearch settings Delayed timebase settingsEvent trigger delay settings Cursor settingsDisplay trace position settings MATH1/2 settingsDisplay settings Trace intensity settingsIndex NumericsIndex Index Index Index Index Index Index Index Index Index Index