Expected voltage 600 mV, Channel 2 AC coupled

4 - 44	COMMAND REFERENCE
Example 1:
Send → CONFigure:VOLTage:AC 0.6,(@2)	Configures AC-RMS channel 2,
Send → INPut2:COUPling AC	expected voltage 600 mV.
Send → INPut2:COUPling AC	Channel 2 AC coupled.
Send → READ:AC? (@2)	Initiates + fetches AC-RMS
Read ← <first measured AC-RMS value>	value.
Read ← <first measured AC-RMS value>
Send → READ:AC? (@2)	Initiates + fetches AC-RMS
Read ← <second measured AC-RMS value>	value.
Read ← <second measured AC-RMS value>

Example 2:

Send → CONFigure:VOLTage:RISE:TIME (0.5),20,80,1E-2,(@2)

’

’Configures the rise time, expected voltage 0.5V, ’LOW ref. = 20%,

’HIGH ref. = 80%, expected time 0.01 seconds, channel 2.

’

Send → INPut2:COUPling DC	Channel 2 becomes DC
Send → READ:RISE:TIME? (@2)	coupled.
Send → READ:RISE:TIME? (@2)	Initiates + fetches the rise time
Read ← <the measured rise time>	of the signal on channel 2.
Read ← <the measured rise time>
Send → FETCh:FALL:TIME? (@2)	Fetches the fall time of the
Read ← <the measured fall time>	signal on channel 2.
Read ← <the measured fall time>

Page 144

Image 144

Fluke PM-3384B Expected voltage 600 mV, Channel 2 AC coupled, Initiates + fetches AC-RMS, Channel 2 becomes DC, Coupled

Contents

Qvwuxphqw Trademarks III About this Manual What this Manual ContainsInitializing the CombiScope Instrument Measuring Signal Characteristics 15.4.2 Error-reporting using the SRQ mechanism Readout of measurement data15.1.1 15.1.2 Command Reference Application Program Examples . . . . . . . . . . . . . A-1 VII What this Manual Contains About this Manual About this Manual System setup Preparations for Scpi ProgrammingGetting Started with Scpi Programming Programming environment Command CommandsAddresslist Constant -1 Ffff hex Program Example Programming Note How to reset the CombiScope instrument How to identify the CombiScope instrumentHow to switch between digital and analog mode Initializing the CombiScope Instrument Error Reporting ’Requests for error Acquiring Traces Channels and memory registers Example Send -- FORMat INT,16Format of the trace response data is as follows Example How to acquire a single shot trace PreparationsThis string data How to acquire repetitive traces Connect a probe from the Probe Adjust signal to channel Measuring Signal Characteristics CONFigure + READ?MEASure? INITiate + FETCh? How to make a single shot measurement How to make repeated measurements Using the Combiscope Instruments Introduction Using the Combiscope Instruments Fundamental Programming Concepts TRACe? CH1SAV RCL DISPlayMENU TRIGger SYSTemKEYMeasurement instructions Single function programming using the instrument model Explanation of the Instrument Model Instrument setup Read ← blockdata Instrument setup Front panel simulation MEASure? query MEASureAC? Benefits of using parameters Voltageparameters = expectedvoltage,resolutionGeneric form of a measurement instruction is as follows Examples MEASureAMPLitude?MEASureVOLTageAMPLitude? 10, @2 MEASureVOLTageFREQuency? 10E6, @3 Pulse characteristics Waveform measurements MEASureFALLTIME? @3 MEASureRISETIME? 20,80Measurefunctionmeasureparameters FTIMe = alias for Falltime RTIMe = alias for Risetime Customizing settings CONFigureACSENSeAVERage on SENSeAVERageCOUNT CONFigureRISETIME READRISEOVERshoot?Multiple measurements Multiple characteristics from a single acquisition READFREQuency?Starts Acquisition Returns Starts a Next acquisition Returns New Frequency result Trigger control via Gpib TRIGgerSOURce BUSINITiate FETChAC? Fetching characteristics from memory traces M12,CH2 Acquisition Acquisition control Using the Combiscope Instruments Triggering Trigger TypeTrigger Source Trigger Level Trigger Slope Trigger Coupling DC Coupling 0 Hz cutoff frequency DC CouplingAC Coupling 10 Hz cutoff frequency LF-REJECT 30 KHz cutoff frequency HF-REJECT 30 KHz cutoff frequencyVideo triggering Ntsc Lines per framePAL Secam Trigger modes OFFLine BUS Commands State Description Pre- and post-triggering Trace External triggering Reading trace acquisitions 10 The trace acquisition flow Single-shot acquisition Repetitive acquisitions Conversion of trace data 11 Relation between screen position and trace value ’Array of 512 integers Byte1 = ASCMID$response$, J Ps = Ts For 8-bit sample tracesPs = Ts / 25600 * 100 = Ts Using the Combiscope Instruments Program Example ’1-byte samples Averaging Acquisition Data AVGn = ∑X1 + .. + Xn ⁄ n 13 The Trigger Model during acquisition averaging Channel Selection Programming tip Signal Conditioning 1 AC/DC/ground coupling Input filtering Input impedanceInput polarity Vertical range and offset Vs = Ts / 200 * PTPeak OFFSet Autoranging attenuatorsLimitation Time Base Control Number of samplesTime base speed MTB = 50 * SENSeSWEepTIME / TRACePOINts Ts = sampleindex * SENSeSWEepTIME / TRACePOINts Real time acquisition 16 Definition of a signal period Autoranging time base How to do post processing Post ProcessingSelect the source for the post processing function Send → CALCulateFEED M21 ’M21 = source for CALC1 Standard Available Mathematical calculationsMath Optional Check the result of the post processing function Example Send → TRACe? M21Read ← tracebuffer ’Reads M21 trace Mathematical calculations Differentiating and integrating traces Frequency domain transformations Relative FFTAbsolute FFT Trace Point Values For 16-bit samples Ps = Ts 25600Trace data This can be calculated as a signal level Example for attenuator setting 0.5 V/divVrms offset calculation DBm 50Ω offset calculation DBm 600Ω offset calculationDBμV offset calculation DBμV = 1 μV 1.0E-6 V at 50Ω impedance Setting Trace Point FrequenciesFs = sampleindex * 1250 / TRACePOINts * MTB Program Example Histogram functions Amplitude belt = peak-to-peak rangeFrequency filtering Trace Memory 20 Trace memory control Channels Memory Registers Standard PM33x0B 512 +EXTExtended Trace formatting Copying traces to memory Writing data to trace memory Send → TRACe? CH3’Queries for CH3 trace Read ← trace block Reading data from trace memory Screen/Display Functions Brightness controlDisplay functions Menu Measurement Value MEAS1/MEAS2 DataMeastype,measvalue,suffixunit Description Cursors Data Type Unit DescriptionMath FFT Data Call Send0, 8, DISPlayMENU MEASure Display of user-defined text Program Example 2 text as block dataSelection of softkey menus Print/Plot Functions Device TypeHpgl Hplaser 22 Hardcopy of screen on printer/plotter Real-Time Clock Auto Calibration = okay Status Reporting Status data for the CombiScope instruments Digital mode Operation status dataCALibrating RANGing TEMPerature Questionable status dataVOLTage CALibration How to reset the status data Status Register Data Structure Preset Value How to enable status reporting Program example using the status byte STB ’Defines SRQ-routine How to report errors Error-reporting routine ’Sends error query Saving/Restoring Instrument Setups How to restore initial settingsHow to save/restore a setup via instrument memory How to save/restore a setup via the Gpib controller How to simulate the pressing of a front panel key Front Panel SimulationRow 201 Row 801 How to simulate the operation of a softkey menu Autoset Simulation Functions not Directly Programmable EnvelopeDISPlayMENU ACQuireSYSTemKEY 3 toggles on/off MULTiple-shot Syntax specification notations Meta symbolsNon-terminal symbols Terminal symbols Default Not contain the message elementBetween the square brackets, without MEASureVOLTageDC? is the same Data types An explicit decimal point and may or may not bePreceded by a sign, e.g Bit codes Double quotesExamples This is a string ’This also’ Command Summary Feed Gate Command Reference Parameters Menu NameState DATA? Read TYPE? Auto DTR RTSBaud Bits ALL Type PAL Secam Ntsc Hdtv Expectedvoltage ,resolution TimeresolutionMeasurefunction Measureparameters Referencelow ,referencehigh,expectedtime Command Descriptions Errors Front panel complianceSpecifies the compliance with front panel operations CAL? CALibration Syntax *CAL? Response 0Calibration okay Calibration not okay Limitation 16COMMAND Reference Clear Status Event Status Enable Byte Register. Alternative commands *ESE #B10001Ation Complete bits to be summarized in the Status *ESE #H11 18COMMAND Reference Event Status RegisterResponse Integer Description PON URQ CME EXE DDE QYE RQC OPC ESR IDN? Identification Syntax *IDN? 20COMMAND Reference Operation CompleteQuery form *OPC? Response Description Restrictions OPT? Option identification Ieee EXT EM MP Recall instrument setup 22COMMAND ReferenceSyntax RCL numericdata Description RST Reset Function Default SettingsSyntax *RST Description Beeper Hardcopy Print & Plot Plotter Hpgl Pass/Fail testing Measure 1Math 1 Cursors Save instrument setup Syntax SAV numericdata Description Service Request Enable 26COMMAND ReferenceRequest Enable Register STB? Status Byte Syntax STB? Response Integer Description TRG Trigger Syntax *TRG Description TST? Self-test Syntax *TST? Response 0Self-test okay Self-test not okay Command Reference Configures for AC-RMS value ABORtSyntax ABORt Description Aborts the current acquisition Switches the differentiate CALCulatenDERivativePOINts CALCulatenDERivativeSTATeFunction on CALCulatenFEED Filter function turned off Filter function turned on CALCulatenINTegralSTATe Integrate function turned off Integrate function turned on Switches MATH2 function on CALCulatenMATHEXPRession Switches MATH1 function on CALCulatenMATHSTATe Query form CALCulatenTRANsformFREQuencyTYPE? Response ABS REL Switches MATH2-FFT on Selects relative MATH2-FFT calculationSelects MATH2-FFT-HANNing window Switches CALCulatenTRANsformHISTogramSTATeHistogram function turned off Histogram function turned on CALibrationALL Syntax CALibrationALL Query form CALibrationALL?Response 0 Description Starts auto calibration Reads condition registerConditions CONFigure Syntax CONFigureVOLTagemeasurefunctionSyntax elements are specified with the MEASure? query Signal on channel Expected voltage 600 mVChannel 2 AC coupled Initiates + fetches AC-RMS DISPlayBRIGhtness Query form DISPlayBRIGhtness? MINimum MAXimumResponse NR3 NR30.00E00 .. .00E00 DISPlayMENUNAME Switches TB Mode menu display on DISPlayMENUSTATeDisplay turned off Display turned on Type Analog Mode Digital Mode DISPlayWINDow1TEXTnDATA?Syntax DISPlayWINDow1TEXTnDATA? Response is peak-peak value of 608.4 mV MEAS1 Display on DISPlayWINDow2TEXT1CLEar Clears all user text DISPlayWINDow2TEXT1DATA As textSends 25 decimal Character byte Command Reference DISPlayWINDow2TEXT1STATe 54COMMAND Reference FETCh?FETChVOLTagemeasurefunction? Voltageparameters, measureparameters Restrictions Acquisition FORMatDATA INT,8 HCOPyDATA? HCOPyDEVice INITiateCONTinuous Response 1 INITiateIMMediate Syntax INITiateIMMediateTrigger level becomes Single shot acquisition INPutnCOUPling INPutnFILTerLPASsSTATe INPutnFILTerLPASsFREQuency? Response 2.00E+07Query form INPutnFILTerLPASsSTATe? Common low pass filter off Common low pass filter on After a *RST command, the impedance is 1 MΩ INPutnIMPedanceSyntax INPutnIMPedance NRf MINimum MAXimum 1E6 INPutnPOLarity Response Norm INV Description INSTrumentNSELect INSTrumentSELect Response DIG AnalDIG Anal MEASure? Channellist =Measurefunction measureparameters Falltime High Signal. The peak to peak value is the difference between First falling edge equals the REFerence MIDDle untilPDUTycycle Referencemiddle Ratio percentage of the positive width PWIDth Risetime Measureparameters Executed. The unit of timeresolution is second Frequencyresolution = NRf DEFaultReferencemiddle is volt Expectedperiod = NRf DEFault Periodresolution = NRf DEFault Limitations Description 74COMMAND Reference Syntax READVOLTagemeasurefunction? Example SENSeAVERageSTATe SENSeAVERageCOUNt SENSeAVERageTYPE? Syntax SENSeAVERageCOUNt NRf 8 16 SENSeAVERageTYPE?Response Scal Initiates trace averaging SENSeFUNCtionOFF SENSeFUNCtionON SENSeFUNCtionSTATe? Addition of channel i+j is off Addition of channel i+j is on Limitations SENSeSWEepOFFSetTIME SENSeSWEepPDETectionSTATe Real-time mode switched off Real-time mode switched on SENSeSWEepREALtimeSTATeSlope = either pos. or neg Reads AC-RMS MTB values in the digital mode SENSeSWEepTIMEQuery form SENSeSWEepTIME? MINimum MAXimum Base range is limited to 10 μs non-alternating time base Coupled values Requests sweep timeReads sweep time Requests nr of trace points Autoranging MTB switched off Autoranging MTB switched on SENSeSWEepTIMEAUTOSets trigger source CH1 Sets autoranging MTB on Switches CH1 on Switches CH2 onSENSeVOLTagenDCRANGeAUTO Autoranging CH2 SENSeVOLTagenDCRANGeOFFSet Channel SENSeVOLTagenDCRANGePTPeak Query form SENSeVOLTagenDCRANGePTPeak? MINimum MAXimum Peak-to-peak = Sensitivity = 0.8 / 8 =100 mV/div Trigger source = Response NR1 Description BIT Decimal Meaning Number Value STATusPRESet Syntax STATusPRESetFollowing table defines the effect of STATusPRESet Status Register Filter / Enable Preset Value Response NR1 Description TEMPerature too high or too low Returned value 16 equals bit 4 set temperature too high/lowEnables report of TEMPerature too high/low 0 Enables report of TEMPerature within allowed limits 1 No error Error number is -222 and the meaning is Data out of rangeSTATusQUEueNEXT? 350,Queue overflow Beeper disabled Beeper enabled Reads the error queueBeeps on error SYSTemBEEPer SYSTemBEEPerSTATe Wire control Response on StanStan XON NoneEven ODD None Response 7 Response XON None No X-on/X-off handshaking1200 Becomes SYSTemDATE Sets the system date to Nov 7 SYSTemERRor? SYSTemKEY Response NR1 Front Panel KEY Enables Utility softkey menu Returns the last key simulation SYSTemSET Nodenr nodelength firstbyte ... lastbyte SYSTemTIME *RST command doesn’t change the current Scpi version SYSTemVERSion?Syntax SYSTemVERSion? Response YYYY.V TRACeCOPY TRACeDATA Response definiteblock Initiates single acquisition Requests channel 1 trace Reads channel 1 traceQueries peak-to-peak Reads peak-to-peak TRACePOINts Number of trace points for all Requests M23 traceReads M23 trace Pass Boolean Sets high-pass filter offSets high-pass filter on Low-pass filter active High-pass filter active HF-reject Automatically switches Filter Frequency LOW-PASS on HIGH-PASS onDC coupling HF-reject AC coupling KHz LF-reject Low-Pass filter off TRIGgerSEQuence1FILTerLPASsFREQuency NRf TRIGgerSEQuence1FILTerLPASsSTATe BooleanTRIGgerSTARtFILTerLPASsFREQuency NRf TRIGgerSTARtFILTerLPASsSTATe Boolean Filter Frequency LOW-PASS on HIGH-PASS onSets cutoff frequency = 30 KHz TRIGgerSEQuence1HOLDoff TRIGgerSTARtHOLDoff TRIGgerSEQuence1LEVel NRf MINimum MAXimum TRIGgerSEQuence1LEVelAUTO BooleanTRIGgerSTARtLEVel NRf MINimum MAXimum TRIGgerSTARtLEVelAUTO Boolean Trigger source Becomes Channel Continuous initiationDiv. sensitivity Trigger level becomes 0.2 After a *RST command, the trigger slope is POSitive TRIGgerSEQuence1SLOPe TRIGgerSTARtSLOPePOS NEG Configures AC-RMS CH2 Sets real-time mode onTriggering is done at positive Rising and negative falling TRIGgerSEQuence1SOURce TRIGgerSTARtSOURce IMMEXT Configures AC-RMS CH1 Input channel 1 becomesTrigger source Single initiation TRIGgerSEQuence1TYPE TRIGgerSTARtTYPE EdgeSelects edge triggering Selects lines triggering Numb Linenr = linenr + 625/2 linenr = linenr 625/2 Selects TV videoSelects video lines Selects video line Secam Ntsc Hdtv Scam Secam Scam Selects Lines/frame SelectsLines/frame Selects Secam Lines/frame Selects Hdtv Positive video signal polarity selected Response POS NEG 123 Selects Negative Video Signal polarity PAL or Secam From 1 to Making a Hardcopy of the Screen Pass/Fail Testing Error reporting is invoked as follows Call errorcheckApplication Program Examples Making automatic measurements Application summaryFETChNWIDth? Application program ’Termination Receive on EOI Making programmed measurements Acquiring Waveform Traces Reading measurement values Saving/Recalling Instrument Setups Save/recall settings to/from internal memory Application summary Application program Making a Hardcopy of the Screen CombiScope InstrumentIeee Pass/Fail Testing Saving a pass/fail test setup Application program Restoring a pass/fail test setup Running a pass/fail test DISPlayMENU MEASure Cross Reference Front Panel Keys / Commands Cross ReferencesChannel 4 is external trigger input for PM33x0B Page Cross Reference Softkey Menus / Commands Acquire menu Programmable with the *SAV/*RCL and Systset commands Cursors menu Display menu Ext instead of ch4 for PM33x0B Mathplus Math menu Other functions with RCL/SAV and Systset Yes no Page Measure menu DTB DEL’D TB menu Setups menu SAVE/RECALL menu TB Mode menu Systset RCL/SAV Analog Mode Trigger menu Logic Wire Utility menu Ieee Vertical menu Inpfilt Onoff INP1IMP INP2IMP INP3IMP INP4IMP Cross Reference Functions / Commands Function + KEYS/MENUS Related Scpi Commands Autoset AverageBW Limit Calibration Autocal Delay Delay MeasurementDelayed Timebase DEL’D TB Differentiate Mathplus FFT ON/OFF Histogram MathplusHold OFF CH1 Integrate Mathplus Logic TriggerMagnify Horizontal Main Time Base Function + KEYS/MENUS Related Scpi Commands Mathematics Pass Fail Testing Mathplus SAV, *RCLPower Supply Measure Menu Remote Control IEEE-488.2 Remote SetupRemote Control RS-232 Probe Utilities Function + KEYS/MENUS Related Scpi Commands Status ScreenSubtract Mathematics Text OFF Trig SingleMulti Roll Trigger Coupling Trigger DEL’D TBTrigger Level Trigger Main TB User Text Util MenuUtil Screen & Sound DISPlayWINDow1TEXT12DATA? Abbreviations Used IDY IDNIEC IFC Manual Conventions RAM RENRQC RQS Glossary of Symbols Used List of Tables4MANUAL Conventions List of Figures Documents Referenced TRIGgerSEQuence1 STARtVIDeoFORMatTYPE type command Purpose Scpi Conformance InformationStandards Information Or abbreviation, e.g., type = Hdtv List of Implemented IEEE-488.2 Syntactical Elements Command Program Header Standards Information Program Message Unit SeparatorProgram Data Separator Program Header Separator End node settings Channel 1/2/3/4 settingsProbe scale settings Common vertical settings Delayed timebase settings Event trigger delay settingsCursor settings Cursor autosearch settings MATH1/2 settings Display settingsTrace intensity settings Display trace position settings Numerics Index Index Index Index Index Index Index Index Index Index Index Index

Fluke PM-3384B Expected voltage 600 mV, Channel 2 AC coupled, Initiates + fetches AC-RMS, Coupled

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

COMMAND REFERENCE

Example 1:

expected voltage 600 mV.

Channel 2 AC coupled.

Initiates + fetches AC-RMS

Example 2:

Channel 2 becomes DC

coupled.

of the signal on channel 2.

Fetches the fall time of the