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Fluke PM3370B user manual Trigger Acquisition, 46THE CPL Protocol

Models: PM3370B

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6 - 46THE CPL PROTOCOL

TRIGGER ACQUISITION

TA

Purpose:

To perform a software trigger.

This command causes an acquisition or sweep to be started. It is the software equivalent of a normal trigger pulse. In the single shot mode the AT (Arm Trigger) command is sent to arm the triggering first.

Command:

"TA"

Response:

CR

acknowledge

Example:

CR

100 PRINT #1,"TA" :’Send Trigger Acquisition

110 GOSUB 1000 :’Sync on acknowledge

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Fluke PM3370B user manual Trigger Acquisition, 46THE CPL Protocol

Contents

Qvwuxphqw Fluke Industrial B.V Reference Manual also contains IIIReference Manual Main Features Page Or model number Following parts should be included in the shipmentVII Contents More Advanced Trigger Functions HOW to USE More Advanced FunctionsScreen Controls Auto Setup Getting Started -1 3.1 FRONT-PANEL LayoutContents Contents XII CH3 XiiiCH1 CH2Line XIVMOD Ieee 488.2 BUS Option CH1 Y-OUTMain TB Gate DTB GateIntroduction Safety PrecautionsOperators Safety Measuring Earth SymbolsImpaired Safety Protection Mains voltage cord, mains voltage range and fuses Safety InstructionsInstallation Instructions Protective earthingRear View General information Installation of batteriesMemory BACK-UP Batteries Front CoverIeee 488.2/IEC 625 BUS Interface Option Handle Adjustment and Operating Positions of the InstrumentVersions RS-232-C Serial InterfaceRack Mounting Getting Started FRONT-PANEL LayoutSwitching on the Instrument Screen control area Screen ControlsConnect the probe as shown in figure Auto SetupST5952 Other Criteria Mode Switching Between Analog and Digital Operating ModesSignal Criteria Analog Mode Digital Mode Sions Getting Started Signal Criteria Analog Mode Digital ModeSignal with an ampli Tude of 2 to 6.4 diviReconnect the probe to the Probe Adjust signal for display Vertical SetupAC Input Coupling Getting Started Timebase setup Timebase SetupMagnify Expand Direct trigger setup Direct Trigger SetupSummary PRE-TRIGGER View Menu keys and softkeys More Advanced FeaturesCursor Operation Vertical cursors ’’ or the horizontal cursors ’=’ More Advanced Trigger Functions 10 More advanced trigger setupPress the Status key and Text OFF key at the same time for More Signal Detail with the Delayed TimebaseStandard Setup MTB1.00ms Ch1 Select Clear & Protect Select Clear ALL Trace StoragePress the Recall key Here is how traces are stored in memoryPM3394B 200 MHz Full Four Channel Oscilloscope HOW to USE the InstrumentPM3370B 60 MHz 2 Channel Oscilloscope PM3390B 200 MHz 2 Channel OscilloscopePM3384B 100 MHz Full Four-Channel Oscilloscope PM3380B 100 MHz 2 Channel OscilloscopeFront Panel Layout HOW to USE the Instrument Simultaneously press the Status and Text OFF keys Display and Probe AdjustmentsRecall Standard Setting Display AdjustmentDisplay Layout Press the Text OFF key three times Menus Text OFFOff T Repeat this adjustment for the second probe CAL Signal and Probe AdjustmentAnalog and Digital Modes Divisions Autorange attenuator Not available Results in aAn amplitude of 2 to Press the Analog key again Standard SettingAnalog to Digital Mode Switching Press the Autoset key for optimum signal displayPress the RUN/STOP key 12HOW to USE the InstrumentTrace Storage RUN/STOP Vertical Deflection Press the AC DC GND key to obtain ground coupling 14HOW to USE the InstrumentVertical Coupling AC, DC, GND Press the AC DC GND key once for DC input couplingPress the AC DC GND key again to obtain ac input coupling Vertical PositionPress the upper key of the Ampl keys 16HOW to USE the InstrumentAdjust Ampl to 100 mV Vertical AmplitudePress the upper Ampl key once Verticalauto RangeVertical Variable Amplitude Press the Auto Range keyVertical CH1+CH2 18HOW to USE the InstrumentPress the Analog key to switch to the Digital mode Press the Analog key to return to the analog modeVertical Invert Press the ’BW LIMIT’ softkey to turn it off again 20HOW to USE the InstrumentVertical Menu Bandwidth Limiter Press the ’BW LIMIT’ softkey to turn it onConnect the probe again Vertical Probe Range IndicatorRemove the input signal from CH1 Vertical MenuSet the timebase to 200 μs Signal is displayed with four periods on the screenHorizontal Deflection and Triggering Timebase TIME/DIVPress one of the TIME/DIV keys Timebaseauto RangeTimebase Main TB VAR Display of 2 to 6 waveform periodsPress the right Magnify key 24HOW to USE the InstrumentTimebase Magnify Visible by turning the X POS controlTurn the X POS control clockwise Timebasex POSTriggering Triggerslope 26HOW to USE the InstrumentTrigger Source Turn the Trigger Level control Trigger Trigger LevelTurn the Trigger Position control counterclockwise Press the Analog key to select the digital modeSet the delay to 0 with Trigger Position Trigger Trigger PositionTrigger Single Shot Digital Acquisition and Storage Advanced Vertical Functions Acquire Average 32HOW to USE the InstrumentAcquire Peak Detection Acquire EnvelopePress the Trigger key Trigger ModePress the first softkey to select ’tv’ trigger mode Advanced Horizontal and Trigger FunctionsPress the ’level-pp’ softkey to turn it off Move the indicator T- in and out of the signal range Trigger Mode Triggered36HOW to USE the Instrument Press the TB Mode keyPress the ’STOP on TRIGGER’ softkey to select ’yes’ Trigger Mode RollTrigger Line 38HOW to USE the InstrumentSlowly vary the frequency of the sine-wave input signal Press the ’yes’ confirm softkey again Memory FunctionsTrace Storageclear & Protect Press the ’yes’ confirm softkeySelect memory location ’m1’ Press the ’save’ softkey 40HOW to USE the InstrumentTrace Storage Save Trace Storage ClearPress the ’COPY’ softkey Trace Storage CopyTrace can be copied from one memory location to another Live trace shifts 42HOW to USE the InstrumentTrace Storage Recall Turn the POSition controlPress the Recall menu key Trace Storage Saving Multiple TracesTrace Storage Recalling Multiple Traces Press the softkey next to ’yes’Time measurements. These can be done in digital 44HOW to USE the InstrumentCursors Functions Cursors Time Cursors ON/OFFCursors Amplitude & Time 46HOW to USE the InstrumentCursors Volt ΔV, V1, V2, ΔV-ratio for voltage measurements Cursors ReadoutPress the softkey next to ’READOUT’ Adjust the cursors to a distance of half a signal period Cursors Readout ΔT-RATIO/PHASE48HOW to USE the Instrument Measurement Functions Start with the standard setting.This ensures a correct startPress the second softkey to turn MEAS1 to ’on’ 50HOW to USE the InstrumentMEASUREMEAS1-PKPK Measure MEAS1-RMSMeasure Meas 2-FREQ Measure DelayRemove the Probe Adjust signal from channel Press the first softkey to select ’delay’Measure Cursor Limit 52HOW to USE the InstrumentMeasure TOUCH, Hold & Measure Procedure to set up for TOUCH, Hold and Measure isProcessing Functions Press the softkey next to Math 1 to enter the Math 1 submenu Mathematics FilterMathematics Multiply 56HOW to USE the InstrumentSwitch Math 2 off again Analog Display Defl Display Functions50Hz Digital Display Remove the signal from channelDigital Display Vert Magnify 60HOW to USE the InstrumentScope ’runs’ once and a signal appears on the screen Use the Track control to adjust Vert Magnify toPress the bottom softkey to select ’sine’ Digital Display InterpolationPress the bottom softkey to select ’dots’ Screen displays two or four traces now 62HOW to USE the InstrumentConnect the Probe Adjust signal to channels 1 Press Autoset Digital Display WindowsPress the Text OFF button to turn off the menu Delayed TimebaseDelayed Timebase Delayed Timebase DEL’DTB has two basic functionsPress either key of the Del’dTB TIME/DIV keys 64HOW to USE the InstrumentStart with the Standard Setup Delayed Timebase Trace SEPDelayed Timebase Trigger Press the Trig 1 key in the CH1 section a few times Press the softkey to select the TRIG’D modeDelayed Timebase Coupling Delayed Timebase Trigger LevelSET Standard First set the instrument to the standard settingHard Copy Facilities Now you are ready to make the hard copy Utility Print Setup9600, 8, N, 3wire, XON/XOFF=ON To set up the layout of the printer hard copyHP7475A, HP7470A, Hpgl = standard HPGL, PM8277 and PM8278 Utility Plot SetupAutoset Standard Autoset and Setup UtilitiesPosition the trace in the bottom of the screen Setups72HOW to USE the Instrument Autoset User ProgrammableTo recall a previously stored setting This setup can be saved in memory as followsAutocal Setup Text LabelSetup Recall a Sequence 74HOW to USE the InstrumentOther Features Function Reference Function ReferenceDescription Acquisition LengthKey sequence Memory ExpansionINV Toggle key to switch the inverted display of CH2 CH4 on/offADD Invert Subtract Result = S1 + S2 ADD MathematicsMathematical description CPL QW Command to query a waveform Refer to for full details Remote commandsALT/CHOP Alternate and chopped modes are shown in the figures below Analog ModeToggle softkey to select ALTernate or CHOPped mode Auto Range Toggle key to switch between analog mode and digital modeAuto Range AnalogKey to start the autoset CPL AS Command for Auto Setup Refer to for full detailsAutoset AutosetAutoset Sequence Trig Autoset UserprogUtilityautoset VertAutoset CPL AS Command for an Auto Setup Refer to for full detailsControl to select the Average factor Key to switch the Average function on or offEffect of bandwidth limiter CAL CPL CL Command for Calibrate Refer to for full detailsCalibration Autocal CHANNEL/TRACE Selection Confidence Check Power on OFFCursors More than one channel is on, Desired channel for voltage CursorsVolt cursors are used for Voltage measurements. WhenTrack Function Reference Cursors BothMeasured Cursors Readout TimeFunction Reference Cursors Readout Volt Trigger position DelayFull description is given under Delayed Timebase Event delayCH1 Slope Delay Measurement Delayed Timebase DEL’D TB Delay Function of ’mtb+dtb’, Delay and Trace SEPToggle switch to switch between analog mode and digital mode Digital ModeInterpolation Display MenuLines are drawn between sample points Display Text Amplitude variation AM Variation FM or jitter Display of signal withAmpl External Trigger 2 Channels Models onlyTrig View Filter Glitch Trigger Hold OFF Hold OFF Using Hold OFF to suppress double triggeringControl to adjust Main TB hold off time Function of key pair AMPL/VAR Input Attenuator Manual + AutomaticRange Toggle key to switch the Auto Range function on/offInput Coupling AutoAC/DC Toggle key to switch a channel on/offInput Impedance 200 MHZ Models only AC/DC/GNDPattern Logic Trigger 4 Channels Models onlyState Refer to Glitch Trigger function To adjust t2Ift2 GlitchFunction of the timebase magnifier and X POS control Magnify HorizontalControl to select the vertical magnification Magnify VerticalLeft side decreases the Magnify factor Function of vertical magnifier and Y POS controlVAR ns Main Timebase Manual + Automatic46FUNCTION Reference Function of key pair TIME/DIV VARMeasure Menu MathematicsPositive and negative, preshoot positive and negative Following measurements are availableVolt Multiply Mathematics Result = S1 x S2 Peak Detection POS Toggle key to switch the peak detection on/offPrinting and Plotting Power SupplyToggle key to switch the oscilloscope on/off Layout InterfacePrinter or plotter Real-time clock Toggle softkey to plot trace information Probe Utilities Status Remote Control IeeeKey to switch from remote to local Control to select the Ieee device addressOdd Even Remote Control RS-232Parity LL Inhibits front key Status Local Refer to for full details RUN/STOP Trace Rotation Rise time measurement using the graticuleScreen Controls and Graticule Screen controls and functionAutocal Necessary Auto SettingScreen Messages Always Parity if 7 BitsNo Average in Roll Mode Auto Setting UserprogramCalibration Error KEY Inactive When StoppedNo Event Delay in TV Mode No DTB in Roll ModeNo Envelope in Roll Mode No Event DELAY, Dual SlopeTIME/DIV Adjusted Setup EmptySetup Protected STD Setup = Recall onlySetups Track Setups Sequence Std memory selection Standard Setup / Front Panel ResetSoftkey to recall ’std’ settings Status Screen Result = S1 S2 Subtract mode is available in the digital mode of operationSubtract Mathematics Control to select the Subtract process Text OFF Timebase ModesAcquired waveform is stored in a different memory location Flows ‘through’ the screen from left to right. When Roll isSelected, the TB Mode menu provides a ‘STOP on TRIGGER’ TRIGGER’ is set to ‘on’, the trace stops when the scope isTime Measurements Function Reference Time TOUCH, Hold & Measure Mode Trigger Coupling Ac dc lf-rej Trigger hf-rej Trigger DEL’D TB DelayToggle softkey to switch DEL’D TB ’on’ Trigger Level control ranges in level-pp on and off Trigger Main TB Edge Function of Trigger Level and slopeTrig Toggle key to select CH1, CH.. or Exttrig as Main TB Slope to change between positive and negative triggerTV Trigger Key sequence Usertext Utility Maintenance Util Menu Utility Screen & Sound Sn = nth sample j=n=k Volt Measurements× S n Falling presh = Oversh Overshoot100% Limit Deflection X-DEFL, X vs Y Toggle softkey to switch X vs Y on CPL Protocol CommandsProgram data separator AcknowledgeResponses Data SeparatorsProgram frame Example Program Frame4THE CPL Protocol Commands in Functional OrderCommands in Alphabetical Order Name Command ReferenceAcknowledge Command Response8THE CPL Protocol ARM TriggerCalibrate 10THE CPL Protocol Default SetupGO to Local 12THE CPL Protocol GO to RemoteIdentity string IdentificationExample response Local Lockout HWL Program Communication16THE CPL Protocol XonxoffApprox .5 sec after an acknowledge = 0 is received, Pds Count Node Program Setup18THE CPL Protocol Count NodeChar Program TextPds Char Character Description Examples of user text Pds Wavenr Sample checksum Admin Pds CountProgram Waveform 22THE CPL ProtocolAction by Parameter Type Example Oscilloscope Notes Example LSB = Sample and &HFF Example programNumerical values of an infinite number of measurement Results is returned cancelling is possible by sending AsciiQuery Measurement 26THE CPL ProtocolValue Parameter specified Value,value T2-trgExample of a single measurement MeasvaluePoint notation, e.g E-09 Or HzNull Query PrintExample Written in Quick Basic 30THE CPL ProtocolOscilloscope, e.g =10 hex Query SetupCount Number of strings to follow Node Example response PM3394 Complete setup queryUser text is returned Query TextPrinted, e.g Query Waveform Admin Count Sample ChecksumParameter Type Example Wavenr The oscilloscope waveform sourceInput #1,NM$ Display SettingsSymbol Parameter Value Type Interpretation of waveform dataSensitivity DefinitionsFormula’s Sn = Yz + Yn * Yr * YuTime base = 50 * Xr * Xu/div Time baseReset Instrument 42THE CPL Protocol Recall SetupPds Setup reg Represents the setup register number, ranging from 1 Save Setup44THE CPL Protocol StatusExample status 46THE CPL Protocol Trigger AcquisitionAcknowledge Ok, normal situation Syntax errorExecution error Synchronization errorStatus Example program to investigate status Main Timebase settings SetupCommon vertical settings Common horizontal settingsMeasurement 1 settings Measurement 2 settings Hex Dec Meaning Events Trigger Delay settingsCursor settings Cursor autosearch settingsNnllxxxxxx.......xx Acquire Menu Structure Appendix a Acquire menu structureDigital Appendix B Cursors menu structureCursors menu structure Display Menu Structure Appendix C Display menu structuredMathematics Menu Structure Appendix D Mathematics menu structureMeasure Menu Structure Appendix F DTB DEL’D TB menu structure SAVE/RECALL Menu Structure Setups Menu Structure Appendix H Setups menu structureTB Mode Menu Structure Appendix J TB Mode menu structureDiv T Appendix K Trigger menu structureTrigger menu structure Appendix L Utility menu structure Utility menu structure On off 50Ω CH1 50Ω CH2 50Ω CH3 50Ω CH4 Vertical Menu StructureVert Menu Vertical BW Limit DTR RS-232 Cable ConfigurationsRTS CTSCable to controller with hardware handshake Cable to printer/plotter with hardware handshakeChannels Simultaneously Sampled AT 100 MS/s Appendix PChannel Acquisitions Expansion and Interpolation Function Index Function Index see ChapterFunction Index Index Measure Menu Time Measuremens Volt Measurements TOUCH, Hold & Measure ModeDelayed Timebase Trigger DEL’D TB Display and Probe Adjustment Display Functions Display MenuGlitch Trigger GND Input Coupling Printing and Plotting Remote Control IeeeInstallation Instructions Appendix N Util MaintenanceMemory BACK-UP Batteries CHANNEL/TRACE Selection SetupsPrinting and Plotting Remote Control RS-232 Memory FunctionsTimebase Modes Autoset and Setup Utilities Setups Setups SequenceTimebase Modes Delayed Timebase Screen Messages Utility Screen & SoundDisplay Menu Deflection 8FUNCTION IndexAdvanced Vertical Functions Cursors Readout Measure Menu Volt Measurements