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HP E1429A manual Setting the Signal Range, Digitizer Attenuators

Models: E1429A

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Setting the Signal Range

The <mode > settings are:

ON - 10 MHz filter is switched to the signal path.

OFF - 10 MHz filter is removed from the signal path.

Enabling the filter reduces the noise on the input signal. Disabling the filter allows sub-sampling applications over the digitizer’s 50 MHz bandwidth.

The filter mode of one input port is independent of the filter mode of the channel’s other port. At power-on or following a reset, the filter is disabled on all input ports. CONFigure and MEASure enable the filter on the specified port.

The digitizer’s input signal range is specified in terms of an expected reading value or as an explicit range value. The commands used for each method are as follows:

MEASure[<chan >]:ARRay[:VOLTage][:DC]? (<size >) [,<expected value >[,<resolution >]] [,(@<input port >)]

CONFigure[<chan >]:ARRay[:VOLTage][:DC] (<size >) [,<expected value >[,<resolution >]] [,(@<input port >)]

[SENSe[<chan >]]:VOLTage[:DC]:RANGe <range >

Changing Ranges With MEASure or CONFigure, if the <expected value > specified is within 98% of the maximum signal that can be measured on the nearest measurement range (Table 3-1), that range is selected. If the <expected value > is greater than 98%, the next higher range is selected. For example, if the <expected value > is 5.1V, the 10V range is selected since 5.1V is greater than 98% of 5.1175V.

Specifying a signal range with the SENSe:VOLTage command that is within a given measurement range (Table 3-1), sets that range. If a signal range is specified that is outside a given measurement range, the next higher range is selected. For example, if a <range > of .52 is specified, the 1V range is selected since .52 is outside the -0.5115 to 0.51175 measurement range.

The Digitizer Attenuators

The input section of the HP E1429 digitizer has three sets of attenuators (Figure 3-3):

20 dB input attenuator (differential inputs only)

20 dB post attenuator (differential inputs only)

6 dB and 14 dB internal attenuators

Chapter 3

Understanding the HP E1429 Digitizer 109

Image 109

HP E1429A manual Setting the Signal Range, Digitizer Attenuators

Contents

Contents HP E1429A/B Digitizer User’s Manual Contents ARM Data Period Value Table ESR? Contents HP E1429A/B Digitizer User’s Manual HP E1429A/B Digitizer User’s Manual Contents HP E1429A/B 20 MSa/s 2-Channel Digitizer User’s Manual Documentation History According to ISO/IEC Guide 22 and EN March 1HP E1429A/B 20 MSa/s 2-Channel Digitizer User’s Manual HP E1429A/B Features and VXIbus Configuration Chapter ContentsGetting Started Chapter HP E1429A/B VXIbus Configuration HP E1429A/B VXIbus ConfigurationPreparation for Use Assigning the Digitizer to a CommanderDigitizer Logical Address HP E1429A/B Logical Address Switch Location Digitizer Bus Request Level Installing the DigitizerBus Request Level Guidelines Addressing the Digitizer over HP-IB Addressing the Digitizer using an Embedded ControllerIntroductory Programs Sending the *IDN? CommandHEWLETT-PACKARD,E1429A,0,A.02.00 TST? IOOUTPUTSADDR, *IDN?Repeat Output 70905SYSTERR? SLFTST.CIOOUTPUTSADDR, *TST? Resetting Clearing DigitizerIOOUTPUTSADDR, SYSTERR? IOOUTPUTSADDR, DIAGTEST?IOOUTPUTSADDR, *RST*CLS SubendLRN? Querying Digitizer ConfigurationInteger RepeatLRN.C Chapter Getting Started TRIGSTARTIM1 10E-6 Instrument and Programming LanguagesOUTPEXT1STAT Ontrigsour EXT1OUTPEXT1STAT OFF Language Programs Microsoft QuickC clhpib.lib Command Line Compiling∙ Microsoft QuickC ∙ Turbo C++CLHPIB.LIB Compiling in the Integrated EnvironmentOther subsystems Introduction to ProgrammingUsing the MEASure CONFigure Commands Port HP E1429A Programming Sequence Programming SequenceConfiguring the Channels Using MEASureHow to Make Measurements MEAS.C Can be used to set the desired number of pre-arm readings SENS1SWEOFFSPOIN Taking Readings After Using CONFigureCONF.C IOOUTPUTSADDR, FETC1? Querying Command Settings QUERY.C Enable Intr ERRORCHK.C Abort Digitizer Command Module DeadlockWhere to go Next Programming Language Using the DigitizerINPUT.C Configuring the Digitizer InputARMCNT.C Taking a Burst of ReadingsARMLEVEL.C Level ArmingPREPOST.C Pre- and Post-Arm ReadingsARMSOUR1 EXT SAMPLE.C Specifying a Sample RateARMSOUR1 IMM Trigsour TIMDUALSAMP.C Dual Rate SamplingARMSLOP1 POS SenssweoffspoinUsing Multiple Digitizers MULTAD.C OUTPTTLT0IMM OUTPTTLT0STAT onFETC2? PACKED.C Using the Packed Data FormatDiagchanlab Form PackFor i = 0 i 20 i++ IOOUTPUTSADDR, SYSTERR? VMEREAL.C VME Bus Data TransfersVinsconfvmemode GEN Trigstarsour VMEVinsconfvmefeed ’CONVCHAN1’ On Next Using the Digitizer Chapter VMESEG1.C Armstarcoun Armstarsour IMMOn Next IOOUTPUTSADDR, *RST*CLS IOOUTPUTSADDR, SYSTERR? DOS VME Bus Data Transfers Using an Embedded ControllerOn Next Using the Digitizer Chapter On Next On Next INST.H #include FilesInst INST.CPP On Next Chapter Using the Digitizer E1429.CPP E1429.HLocal Bus Data Transfers Vinslbusmode GEN VinslbusresVinslbusfeed ’CONVBOTH’ Formdata PackIOOUTPUTSADDR, Init IOOUTPUTSADDRMEM, InitUsing the Digitizer Chapter Chapter Using the Digitizer On Next Vinslbusmode APP Vinslbusfeed ’MEMCHAN1’IOOUTPUTSADDRG, Init IOOUTPUTSADDRA, InitIOOUTPUTSADDRG, *OPC? On Next Using the Digitizer Chapter On Next Vinslbusfeed ’CONVCHAN1’ Armstarsour TTLT0Vinslbusmode INS OUTPTTLT0FEED ’READY’IOOUTPUTSADDRG, Init IOOUTPUTSADDRG, *OPC?,5 IOOUTPUTSADDRI, InitUsing the Digitizer Chapter Chapter Using the Digitizer Using the Digitizer Chapter STATUS.C Using the Digitizer Status RegistersUsing the Digitizer Chapter Understanding the Digitizer HP E1429 Digitizer Block DiagramUnderstanding the HP E1429 Digitizer Chapter Message and Register Interfaces Digitizer Command PathsDigitizer Input Section Scpi Command ControlSENSechan VOLTage Range range Enabling the 10 MHz Input Filter Setting the Input ImpedanceInverting and Non-inverting Differential Input Ports Digitizer Attenuators Setting the Signal RangeSensvoltrang Using the Single-Ended Input 1V RangeArming and Triggering HP E1429 Digitizer State DiagramARM-TRIG State Diagram HP E1429 Digitizer Arming and Triggering ARM STARtSEQuence1 Set positive or negative transition Arm Window Boundaries Arm Level Range ARM Synchronization Signals OUTPutEXTernal1FEED source Enabling the Synchronization Signal Routing the Signal to a SourceOffset Triggering DigitizerTRIGgerSTARtTIMer1 period Chapter Understanding the HP E1429 Digitizer Source Digitizer Reference ClockSpecifying the External Reference Frequency TRIGgerSTARtCOUNt count SENSechan SWEepPOINts count Trigger Synchronization Signals OUTPutEXTernal1FEED source Routing the Signal to a Source Data Flow, Storage, and Conversions Analog-to-Digital ConverterHP E1429 Digitizer Data Flow HP E1429 Digitizer Reading Storage 10. Memory Segments with Pre and Post-arm Readings MEMory SubsystemDigitizer Data Formats Determining the Battery ChargeDefinite Length Arbitrary Block Header Packed Reading ConversionsHP Basic Example Removing the Arbitrary Block HeaderLanguage Example 16-bit readings ReadingsREAD? 11. Retrieving Readings from Digitizer Memory Retrieving Readings Using FETCh? Retrieving Readings UsingREAD? FETChing Readings from MemorySeparating Pre- and Post-Arm Readings Determining Number of Readings FETChedUsing DIAGnosticUPLoad SADDress? Memory Management DIAGnostic SubsystemLocating Unsegmented Readings ARMSTARtCOUNt Locating Segmented ReadingsMaximum Readings Ending segment address = segmentnumber * 65536 Therefore, the DIAGnosticFETCh? command would be executed as Locating the Data Register 12. Digitizer Registers in A16 and A24 Address Space Base AddressExecute the following HP E1406 Command Module command On Next Data Register Offset VME VINStrument SubsystemDATA? Setting the VME bus Data Source Segmented Reading Transfers Understanding the HP E1429 Digitizer Chapter Multiple VME Bus Data Transfers Local Bus Description 14. Local Bus Signal Line Definitions15. HP E1429B Local Bus Data Transfer Protocol How Data is TransferredUnderstanding the HP E1429 Digitizer Chapter Local Bus Transfer Configurations Digitizer Local Bus CommandsLbus SendEOF EOB D3 D3 D3 Multiple Digitizers and Serial TransfersEOF EOB D1 D1 D1 Digitizer Configuration Restrictions Setting the Local Bus Transfer Mode Setting the Local Bus Data Source Multiple Local Bus Data Transfers Digitizer Status Registers Status Subsystem CommandsStatus System Registers 16. HP E1429 Status Groups and Associated Registers Condition Register Questionable Signal Status GroupReading the Condition Register Operation Status Group Enable RegisterSTATusOPERationCONDition? Standard Event Status Register Standard Event Status GroupPON CME EXE DDE QYEReading the Standard Event Status Register Standard Event Status Enable RegisterESR? ESE?Status Byte Register Status Byte Status GroupOper RQS ESB MAV Ques Service Request Enable Register Presetting the Enable Register and Transition FilterReading the Status Byte Register STB? SpollSynchronizing the Digitizer Saving Digitizer ConfigurationsOPC OPC? WAI RST How to Save and Recall a ConfigurationUnderstanding the HP E1429 Digitizer Chapter Command Reference Common Command Format Command TypesAbbreviated Commands Scpi Command FormatARM ArmlevnegImplied Optional Keywords Variable Command Syntax Scpi Command ParametersParameter Types Explanations, Examples OUTPECLT0FEED ’EXT’ OUTPECLT0FEED \EXT\ Querying Parameter Settings Scpi Command ExecutionOptional Parameters Definite length blockMIN and MAX Parameters in Coupled Commands Executable When Initiated CommandsArmcoun Trigcoun MAX Linking Ieee 488.2 Common Commands Scpi Command ReferenceLinking Multiple Scpi Commands ABORt ∙ Executable when initiated Yes ∙ Coupled Command NoABORt Example Aborting a measurementARM STARtCOUNt ARMSTARtCOUNtSyntax SubsystemParameters Parameter Range Default Name Type ValuesARMSTARtCOUNt STARtDELay ARMSTARtDELayParameter Range Default Name Type Values MINimumMAXimumARMSTARtIMMediate Example Setting the arming delaySTARtIMMediate ∙ *RST Condition noneSTARtLEVelchanNEGative voltage ARMSTARtLEVelchanNEGative voltageExample Arming for measurement Comments ∙ Executable while initiated NoSTARtLEVelchanPOSitive voltage ARMSTARtLEVelchanPOSitive voltageSTARtSLOPen ARMSTARtSLOPenExample Setting the arm slope ARMSTARtSOURcen Example Setting two arm start sources ∙ Related Commands ARMSTARtSLOPen , ARMSTARtLEVelchanCOUNt? CALibrationchanSubsystem Syntax Numeric NoneData CALibrationchanDATAAssign @X to 70905FORMAT OFF Comments ∙ Executable when initiated No ∙ Coupled Command NoDELay CALibrationchanDELayGain CALibrationchanGAINSeconds Confarrvolt 100,4.8,DEF,@1 ∙ *RST Condition none Example Performing a gain calibrationCALibrationchanSECureCODE CALibrationchanSECureSTATe CALibrationchan SECureSTATe mode ,code enables or disablesCALibrationchanSTORe CALibrationchanSTOReAUTO CALibrationchan STOReAUTO mode selects whether or notVALue Example Turn automatic storage of calibration values offCALibrationchanVALue ∙ Related commands CALibrationGAINNumeric 101.80 to Volts CALibrationchanZERO Example Setting the calibration valueZero CAL1ZERO DEF,DEF,ALL CONFigurechanARRayVOLTageDC size,expected CONFigurechanARRayVOLTageDC CONFigurechanARRayVOLTageDC Range Volts Value Maximum Voltage ResolutionCONFARRayVOLT 20,1.5,@3 CALibrationchan CONVerge? DIAGnosticCALibrationchan ZEROSENSitivity? DIAGnosticCALibrationchan GAINSENSitivity?CHANnelchan LABel ∙ Coupled Command No ∙ Related Commands ABORt, FETCh? DIAGnosticFETCh?Example 1 Tagging the data with channel number Example 2 Reading back PACKed data HP Basic program DIAGnosticMEMorychan Fill numsegments, count sets up DIAGnosticMEMorychanFILLMEMorychanADDResses? PEEK? DIAGnosticPEEK?Thru Ffffff None Example Examining the setting of the traffic register DIAGnosticPOKEExample Changing the contents of the traffic register PokeSGET? DIAGnosticSGET?Sput TEST?FETChchan Command Reference FETChchan SubsystemFETChchan Subsystem Command Reference FETC1COUN? FETChchanCOUNt?∙ *RST Condition none Example Recovering readings in memory FETChchanRECover?Subsystem FORMat FORMatExample 1 Setting the data format to 64 bit reals ∙ Related Commands READ?, FETCh?FORMatDATA IMMediate INITiateExample Placing the HP E1429A in the wait-for-arm state INITiateIMMediateSubsystem INPutport INPutportINPutportFILTerLPASsSTATe INPutportFILTerLPASsSTATe mode enables or disablesIMPedance Example Enabling the 10 MHz low-pass filterINPutportSTATe Example Setting 75 Ω input impedanceSTATe Example Disabling input port ARRayVOLTageDC? MEASurechanMEASurechanARRayVOLTageDC size,expected MEASurechanARRayVOLTageDC? Maximum Voltage Resolution MEAS1ARRayVOLT? 20,1.5,@3 Example Enable memory to be non-volatile BATTerySTATeMEMory ∙ *RST Condition not affected∙ *RST Condition none Example Check the battery charge MEMoryBATTeryCHARge?ECLTrgnFEED OUTPutOUTPutECLTrgnSTATe Example Setting the ECLTrg0 sync pulse sourceECLTrgnSTATe ∙ *RST ConditionOUTPutEXTernal1FEED Parameter Range Default Name Type Values UnitsEXTernal1FEED BooleanTRIGgerSTARtSEQuence1 ARMSTARtSEQuence1 None RFTRigger SENSe12ROSCillatorOUTPutEXTernal1STATe Example Setting the sync pulse sourceEXTernal1STATe TTLTrgnFEEDNumeric Through None OUTPutTTLTrgnFEEDARMSTARtSEQuence1 None Example Enabling sync pulse for READy on TTLTrg5Example Enabling sync pulse output to TTLTRG0* and TTLTRG5 OUTPutTTLTrgnSTATeREADchan READchan Subsystem Command ReferenceCommand Reference READchan Subsystem SENSe SENSechanFUNCtion SENSechanFUNCtionExample Selecting the single ended input on channel SENSechanFUNCtion SENSechanFUNCtionEXTernalFREQuency SENSechanROSCillatorSOURce SENSechanROSCillatorSOURceExample Setting the Reference Oscillator Source SENSechan SWEep OFFSetPOINts count SENSechan SWEepOFFSetPOINts countNumber Maximum Number Memory Segments Example Setting 50 pre-arm readings on channel 1, input port MINimum selects 1 reading SENSechan SWEepPOINts countExample Setting 500 readings RANGe SENSechanVOLTageDCSENSechan VOLTageDCRANGe range selects the range for Comments ∙ Executable when initiated Yes Range Measurement Resolution Allowable Setting Volts PortsSENSechanVOLTageDC RANGe RESolution? SENSechanVOLTageDC RESolution?Example Selecting the 102.35 Volt range on channel Operation Status Register STATusSTATusOPCINITiate Subsystem Syntax Questionable Signal Status RegisterOPCINITiate STATusOPERationQUEStionableCONDition? OPERationQUEStionableENABleOPERationQUEStionableCONDition? STATusOPERationQUEStionableEVENt? Example Setting the Operation register enable maskOPERationQUEStionableEVENt? Through +32767 None Non-decimal NumericOPERationQUEStionablePTRansition STATusOPERationQUEStionableNTRansitionPRESet STATusPRESetExample Reading the error queue ERRor?SYSTem VERSion?TRIGger Command Reference TRIGger SubsystemTRIGger Subsystem Command Reference TRIGgerSTARtCOUNt Example Taking 20 readings 8 pre-arm and 12 post-arm STARtSOURce TRIGgerSTARtIMMediateBushold TRIGgerSTARtSOURceSTARtTIMer1 TRIGgerSTARtTIMer1Example Setting the start trigger source Reference period toTRIGgerSTARtTIMer1 Period Value Table STARtTIMer2∙ *RST Condition 5.0E-8 seconds Multiple PeriodTRIGgerSTARtTIMer2 ∙ *RST Condition 1.0E-7 seconds Local Bus transfers VINStrumentData voltagelist VME VXI data transfer Bus transfersVINStrument CONFigureLBUSFEED CONFigureLBUSMEMoryINITiate VINStrumentCONFigureLBUSMEMoryINITiateCONFigureLBUSMODE VINStrumentCONFigureLBUSMODECONFigureLBUSRESet VINStrumentCONFigureLBUSRESetExample Setting the Local Bus operation mode APPendGENerate None INSertOFF PIPelineCONFigureLBUSSENDPOINts VINStrumentCONFigureLBUSSENDPOINtsCONFigureLBUSSENDPOINtsAUTO VINStrumentCONFigureLBUSSENDPOINtsAUTOBoolean On OFF None CONFigureTESTDATA VINStrumentCONFigureTESTDATAVINStrumentCONFigureTESTDATA voltagelist configures ∙ *RST Condition none Example Testing Local Bus operation VINStrumentCONFigureVMEFEED CONFigureVMEMEMoryINITiate VINStrumentCONFigureVMEMEMoryINITiateCONFigureVMEMODE VINStrumentCONFigureVMEMODECONFigureVMESENDADDRessDATA? VINStrumentCONFigureVMESENDADDRessDATA?Example Setting the VXIbus data transfer bus operation mode GENerateOFF NoneHEWLETT-PACKARD Virtual INSTRUMENT,ANY ATOD,0,A.01.00 VINStrumentIDENtity?Category Command Title IEEE-488.2 Common CommandsCLS ∙ Executable when initiated YesDMC ESE and *ESE? EMC and *EMC?Example Define macro to start measurement ESR? Example Enable all error eventsGMC? StringLMC? IDN?Example Query macro definition HEWLETT-PACKARD,E1429,0,A.01.00OPC LRN?PMC OPC?PUD and *PUD? Block Through 63 characters None Data String RCLRST RMCSRE and *SRE? SAVTRG STB?WAI TST?Command Quick Reference Chapter Chapter Command Quick Reference Unmask VINStrument Scpi Conformance Information Scpi Confirmed CommandsChapter Scpi Conformance Information Scpi Conformance Information Chapter Appendix Contents SpecificationsTo VME Bus Read-OutTo Local Bus E1429B only Number of PartitionsTotal Readings per Partition Amplitude Characteristics Signal ConditioningOutput Formats Signal-to-Noise RatioGain and Offset 4.3.1, note FilteringSingle-ended inputs Connector BNC Converter Supplemental CharacteristicsWord Error Rate 4.15 qualified error level word error rate Integral Nonlinearity 4.4.3, NoteAnalog Bandwidth 4.6.1 filter off Single-ended inputs, supplemental characteristicsEffective bits on different ranges Crosstalk between channelsAppendix a Specifications Effective bits, relative to 1V single-ended range Differential Inputs, supplemental characteristicsTrigger Sample Clock Subsystem Frequency Sample Rate Characteristics Internal TimerCrosstalk Timebase and Trigger additional supplemental characteristics Bus Access and Connectors General Characteristics EMC Specifications Appendix a Useful Tables IDN.C HP BASIC, C ERRORCHK.CSLFTST.C RSTCLS.CLBUS2PST.C LOCALAD.CLBUSAUTO.C STATUS.CEMC Mode OFFCalstorauto CAL1VALSour DELSLOP1 POSTable B-3. HP E1429A/B Error Messages Code Description Appendix B Useful Tables Useful Tables Appendix B Appendix B Useful Tables Local bus test data size not Register Programming System ConfigurationRegister reads and writes are 8-bits Reading and Writing to the RegistersFigure C-1. HP E1429A/B A24 Address Space Addressing the RegistersDetermining the A24 Base Address Appendix C Register Programming A24READ.C Register Descriptions See A24 Register TableBase + A/D Status Register Input Configuration RegistersA/D Serial Register Base +0316A/D Shift Register A/D Parallel Strobe RegisterBase +0B16 Bit Name Function Abort and Arm Immediate Register Arm and Trigger Configuration RegistersArm Status Register Base +Timebase Initiation Registerbase + Arm Internal Bus Registerbase + Arm Source Register Power-on/Reset SettingsArm Source Register Arm Control Register Arm Control Register Power-on/Reset SettingsBase + 4B16 Trigger Source Register Trigger Source Register Power-on/Reset SettingsBase + 4D16 Register Programming Appendix C Reference Oscillator Register Reference Oscillator Register Power-on/Reset SettingsBase + 4F16 Arm Count Register Base + 5516 and base + Arm delay Register Base + 5116 and base +5316Arm Count Latch Register Decade Division Register Trigger Immediate Registerbase + 5D16Binary Division Register Base +6116Post-Arm Reading Count Register power-On/Reset Settings Pre-Arm Reading Count Register power-On/Reset SettingsPre-Arm Reading Count Registers Base + 7316 and base +Memory Control Registers Traffic Register Power-on/Reset SettingsTraffic Register Base +0216Channel ID Register Pulse RegisterData Register Memory Control Register Memory Control Register Power-on/Reset SettingsBase +2116 Base +2316 to base +2716 Memory Address RegistersBase Address Registers Terminal Address RegisterBase +2B16 Base +2D16 and base +2F16Figure C-2. Accessing the A/D Shift Register Using the A/D Shift RegisterBit Name Setting Setting the Input Impedance Setting Measurement RangeProcedure Enabling the 10 MHz FilterInput Post 14 dB Attenuator Bits Bits 34 Bits 35 37,45 38,46 Checking the Idle State Setting the Arm Sources Setting the Digitizer ConfigurationSetting the Arm Delay Setting the Arm CountSetting the Reference Source Sending an Arm Immediate Signal Setting the Trigger SourceAborting Measurements Sending a Trigger Immediate SignalInitializing Digitizer Memory Re-initiating the DigitizerAppendix C Register Programming MSB LSB Initializing Initiating Timebase ProcessorTrigger count Timebase resetSample rate Data sourceCount is 1 and the post-arm count is y-3 Midsb LSB Register Programming Appendix C Initializing Digitizer Memory to Retrieve Data Retrieving Data from MemoryRegister Programming Appendix C MSB LSB Example Program Appendix C Register Programming REGPROG.C IOOUTPUTSADDR, READ? On Next On Next On Next On Next On Next On Next On Next On Next On Next On Next On Next Void checkerrorchar *function Char Into161 Length = Register Programming Appendix C Interleaved Transfers Local Bus Interleaved TransfersLocal Bus Interleaved Transfers Appendix D Setting Interleaved Transfer ModeProcedure LBUSINTR.C Trigstarsour TIM Trigstarsour ECLT0Trigstartim 1E-6 OUTPECLT0FEED ’TRIG’Tracdef SET1 Store readings 80 bytes in SET1 IOOUTPUTSADDRG, Abor IOOUTPUTSADDRMEM, *OPC?IOOUTPUTSADDRI, Abor Local Bus Interleaved Transfers Appendix D Appendix D Local Bus Interleaved Transfers Local Bus Interleaved Transfers Appendix D HP E1429A/B User’s Manual Index IndexIndex HP E1429A/B User’s Manual HP E1429A/B User’s Manual Index Index HP E1429A/B User’s Manual Scpi Index HP E1429A/B User’s Manual