Using Multiple Digitizers | HP E1429A instruction

2.Pre- and Post-Arm Sample Rates. With dual rate sampling, pre-arm and post-arm readings occur at different sample rates. It is recommended that pre-arm readings use the faster of the two sample rates. The reason is once the arm is received, one addtional sample at the pre-arm rate must occur before the post-arm rate is used.

3.Dual Rate Sampling Reference Sources. The reference sources available with trigger source DTIMer are:

INTernal - the digitizer’s internal 20 MHz oscillator (default source)

CLK10 - the VXIbus system’s 10 MHz clock

ECLTrg0 - the VXI backplane ECLTrg0 trigger line

ECLTrg1 - the VXI backplane ECLTrg1 trigger line

EXTernal2 - the digitizer’s front panel "Ext 2" BNC port

When using any of these references, one of the two sample rates must be set to the reference period. Also, the reference used must be specified with the SENSe:ROSCillator:SOURce command, and if the source is ECLTrg0/1 or EXTernal2, the frequency of the reference must be specified with the SENSe:ROSCillator:EXTernal:FREQuency command.

4.Other Dual Rate Sampling Sources. When the dual rate sampling source is DECLtrg, ECLTrg0 paces the pre-arm readings and ECLTrg1 paces the post-arm readings. The sample rates are determined entirely by the source(s) driving the trigger lines. When the dual rate sampling source is DEXTernal, front panel port "Ext 1" paces the pre-arm readings and port "Ext 2" paces the post-arm readings. The sample rates are determined entirely by the source(s) driving the ports.

5.Additional Information. More information on dual rate sampling is found in Chapter 3 - "Understanding the Digitizer".

Using Multiple Digitizers

This program demonstrates:

∙how to route the internal reference clock from one digitizer to a second digitizer, and how to configure the digitizers such that they are armed simultaneously.

56 Using the Digitizer

Chapter 2

Image 56

HP E1429A manual Using Multiple Digitizers

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 March 1 According to ISO/IEC Guide 22 and EN HP E1429A/B 20 MSa/s 2-Channel Digitizer User’s Manual Chapter Contents HP E1429A/B Features and VXIbus Configuration Getting Started Chapter HP E1429A/B VXIbus Configuration HP E1429A/B VXIbus Configuration Digitizer Logical Address Assigning the Digitizer to a CommanderPreparation for Use HP E1429A/B Logical Address Switch Location Bus Request Level Guidelines Installing the DigitizerDigitizer Bus Request Level Addressing the Digitizer using an Embedded Controller Addressing the Digitizer over HP-IB HEWLETT-PACKARD,E1429A,0,A.02.00 Sending the *IDN? CommandIntroductory Programs IOOUTPUTSADDR, *IDN? TST? SLFTST.C Repeat Output 70905SYSTERR? Resetting Clearing Digitizer IOOUTPUTSADDR, *TST?IOOUTPUTSADDR, SYSTERR? IOOUTPUTSADDR, DIAGTEST? Subend IOOUTPUTSADDR, *RST*CLS Querying Digitizer Configuration LRN?Integer Repeat LRN.C Chapter Getting Started Instrument and Programming Languages TRIGSTARTIM1 10E-6 OUTPEXT1STAT Ontrigsour EXT1OUTPEXT1STAT OFF Language Programs Command Line Compiling Microsoft QuickC clhpib.lib∙ Microsoft QuickC ∙ Turbo C++ Compiling in the Integrated Environment CLHPIB.LIB Introduction to Programming Other subsystems Using the MEASure CONFigure Commands Port Programming Sequence HP E1429A Programming Sequence How to Make Measurements Using MEASureConfiguring the Channels MEAS.C Can be used to set the desired number of pre-arm readings Taking Readings After Using CONFigure SENS1SWEOFFSPOIN CONF.C IOOUTPUTSADDR, FETC1? Querying Command Settings QUERY.C Enable Intr ERRORCHK.C Digitizer Command Module Deadlock Abort Where to go Next Using the Digitizer Programming Language Configuring the Digitizer Input INPUT.C Taking a Burst of Readings ARMCNT.C Level Arming ARMLEVEL.C ARMSOUR1 EXT Pre- and Post-Arm ReadingsPREPOST.C Specifying a Sample Rate SAMPLE.CARMSOUR1 IMM Trigsour TIM Dual Rate Sampling DUALSAMP.CARMSLOP1 POS Senssweoffspoin Using Multiple Digitizers MULTAD.C FETC2? OUTPTTLT0STAT onOUTPTTLT0IMM Using the Packed Data Format PACKED.C Form Pack Diagchanlab For i = 0 i 20 i++ IOOUTPUTSADDR, SYSTERR? VME Bus Data Transfers VMEREAL.C Vinsconfvmefeed ’CONVCHAN1’ Trigstarsour VMEVinsconfvmemode GEN On Next Using the Digitizer Chapter VMESEG1.C Armstarsour IMM Armstarcoun On Next IOOUTPUTSADDR, *RST*CLS IOOUTPUTSADDR, SYSTERR? VME Bus Data Transfers Using an Embedded Controller DOS On Next Using the Digitizer Chapter On Next On Next #include Files INST.H Inst INST.CPP On Next Chapter Using the Digitizer E1429.H E1429.CPP Local Bus Data Transfers Vinslbusres Vinslbusmode GENVinslbusfeed ’CONVBOTH’ Formdata Pack IOOUTPUTSADDRMEM, Init IOOUTPUTSADDR, Init Using the Digitizer Chapter Chapter Using the Digitizer On Next Vinslbusfeed ’MEMCHAN1’ Vinslbusmode APP IOOUTPUTSADDRG, *OPC? IOOUTPUTSADDRA, InitIOOUTPUTSADDRG, Init On Next Using the Digitizer Chapter On Next Armstarsour TTLT0 Vinslbusfeed ’CONVCHAN1’ OUTPTTLT0FEED ’READY’ Vinslbusmode INS IOOUTPUTSADDRG, Init IOOUTPUTSADDRI, Init IOOUTPUTSADDRG, *OPC?,5 Using the Digitizer Chapter Chapter Using the Digitizer Using the Digitizer Chapter Using the Digitizer Status Registers STATUS.C Using the Digitizer Chapter HP E1429 Digitizer Block Diagram Understanding the Digitizer Understanding the HP E1429 Digitizer Chapter Digitizer Command Paths Message and Register Interfaces Scpi Command Control Digitizer Input Section SENSechan VOLTage Range range Inverting and Non-inverting Differential Input Ports Setting the Input ImpedanceEnabling the 10 MHz Input Filter Setting the Signal Range Digitizer Attenuators Using the Single-Ended Input 1V Range Sensvoltrang HP E1429 Digitizer State Diagram Arming and Triggering ARM-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 Routing the Signal to a Source Enabling the Synchronization Signal Triggering Digitizer Offset TRIGgerSTARtTIMer1 period Chapter Understanding the HP E1429 Digitizer Specifying the External Reference Frequency Digitizer Reference ClockSource TRIGgerSTARtCOUNt count SENSechan SWEepPOINts count Trigger Synchronization Signals OUTPutEXTernal1FEED source Routing the Signal to a Source Analog-to-Digital Converter Data Flow, Storage, and Conversions HP E1429 Digitizer Data Flow HP E1429 Digitizer Reading Storage MEMory Subsystem 10. Memory Segments with Pre and Post-arm Readings Determining the Battery Charge Digitizer Data Formats Packed Reading Conversions Definite Length Arbitrary Block Header Removing the Arbitrary Block Header HP Basic Example Readings Language Example 16-bit readings READ? 11. Retrieving Readings from Digitizer Memory Retrieving Readings Using Retrieving Readings Using FETCh?READ? FETChing Readings from Memory Determining Number of Readings FETChed Separating Pre- and Post-Arm Readings Using DIAGnosticUPLoad SADDress? Locating Unsegmented Readings DIAGnostic SubsystemMemory Management Maximum Readings Locating Segmented ReadingsARMSTARtCOUNt Ending segment address = segmentnumber * 65536 Therefore, the DIAGnosticFETCh? command would be executed as Locating the Data Register Base Address 12. Digitizer Registers in A16 and A24 Address Space Execute the following HP E1406 Command Module command On Next Data Register Offset DATA? VINStrument SubsystemVME Setting the VME bus Data Source Segmented Reading Transfers Understanding the HP E1429 Digitizer Chapter Multiple VME Bus Data Transfers 14. Local Bus Signal Line Definitions Local Bus Description How Data is Transferred 15. HP E1429B Local Bus Data Transfer Protocol Understanding the HP E1429 Digitizer Chapter Digitizer Local Bus Commands Local Bus Transfer ConfigurationsLbus Send EOF EOB D1 D1 D1 Multiple Digitizers and Serial TransfersEOF EOB D3 D3 D3 Digitizer Configuration Restrictions Setting the Local Bus Transfer Mode Setting the Local Bus Data Source Multiple Local Bus Data Transfers Status System Registers Status Subsystem CommandsDigitizer Status Registers 16. HP E1429 Status Groups and Associated Registers Reading the Condition Register Questionable Signal Status GroupCondition Register Enable Register Operation Status Group STATusOPERationCONDition? Standard Event Status Group Standard Event Status RegisterPON CME EXE DDE QYE Standard Event Status Enable Register Reading the Standard Event Status RegisterESR? ESE? Oper RQS ESB MAV Ques Status Byte Status GroupStatus Byte Register Presetting the Enable Register and Transition Filter Service Request Enable RegisterReading the Status Byte Register STB? Spoll OPC OPC? WAI Saving Digitizer ConfigurationsSynchronizing the Digitizer How to Save and Recall a Configuration RST Understanding the HP E1429 Digitizer Chapter Command Reference Command Types Common Command Format Scpi Command Format Abbreviated CommandsARM Armlevneg Parameter Types Explanations, Examples Scpi Command ParametersImplied Optional Keywords Variable Command Syntax OUTPECLT0FEED ’EXT’ OUTPECLT0FEED \EXT\ Scpi Command Execution Querying Parameter SettingsOptional Parameters Definite length block Armcoun Trigcoun MAX Executable When Initiated CommandsMIN and MAX Parameters in Coupled Commands Linking Multiple Scpi Commands Scpi Command ReferenceLinking Ieee 488.2 Common Commands ∙ Executable when initiated Yes ∙ Coupled Command No ABORtABORt Example Aborting a measurement ARM ARMSTARtCOUNt STARtCOUNtSyntax Subsystem Parameter Range Default Name Type Values Parameters ARMSTARtCOUNt ARMSTARtDELay STARtDELayParameter Range Default Name Type Values MINimumMAXimum Example Setting the arming delay ARMSTARtIMMediateSTARtIMMediate ∙ *RST Condition none ARMSTARtLEVelchanNEGative voltage STARtLEVelchanNEGative voltageExample Arming for measurement Comments ∙ Executable while initiated No ARMSTARtLEVelchanPOSitive voltage STARtLEVelchanPOSitive voltage ARMSTARtSLOPen STARtSLOPen Example Setting the arm slope ARMSTARtSOURcen ∙ Related Commands ARMSTARtSLOPen , ARMSTARtLEVelchan Example Setting two arm start sources CALibrationchan COUNt?Subsystem Syntax Numeric None CALibrationchanDATA Data Comments ∙ Executable when initiated No ∙ Coupled Command No Assign @X to 70905FORMAT OFF CALibrationchanDELay DELay CALibrationchanGAIN Gain Seconds ∙ *RST Condition none Example Performing a gain calibration Confarrvolt 100,4.8,DEF,@1 CALibrationchanSECureCODE CALibrationchan SECureSTATe mode ,code enables or disables CALibrationchanSECureSTATe CALibrationchanSTORe CALibrationchan STOReAUTO mode selects whether or not CALibrationchanSTOReAUTOVALue Example Turn automatic storage of calibration values off Numeric 101.80 to Volts ∙ Related commands CALibrationGAINCALibrationchanVALue Zero Example Setting the calibration valueCALibrationchanZERO CAL1ZERO DEF,DEF,ALL ARRayVOLTageDC CONFigurechanCONFigurechanARRayVOLTageDC size,expected CONFigurechanARRayVOLTageDC Maximum Voltage Resolution Range Volts Value CONFARRayVOLT 20,1.5,@3 DIAGnostic CALibrationchan CONVerge? CHANnelchan LABel DIAGnosticCALibrationchan GAINSENSitivity?CALibrationchan ZEROSENSitivity? Example 1 Tagging the data with channel number DIAGnosticFETCh?∙ Coupled Command No ∙ Related Commands ABORt, FETCh? Example 2 Reading back PACKed data HP Basic program MEMorychanADDResses? DIAGnosticMEMorychanFILLDIAGnosticMEMorychan Fill numsegments, count sets up Thru Ffffff None DIAGnosticPEEK?PEEK? DIAGnosticPOKE Example Examining the setting of the traffic registerExample Changing the contents of the traffic register Poke DIAGnosticSGET? SGET?Sput TEST? Command Reference FETChchan Subsystem FETChchan FETChchan Subsystem Command Reference FETChchanCOUNt? FETC1COUN? FETChchanRECover? ∙ *RST Condition none Example Recovering readings in memory FORMat Subsystem FORMat FORMatDATA ∙ Related Commands READ?, FETCh?Example 1 Setting the data format to 64 bit reals INITiate IMMediate INITiateIMMediate Example Placing the HP E1429A in the wait-for-arm state INPutport Subsystem INPutport INPutportFILTerLPASsSTATe mode enables or disables INPutportFILTerLPASsSTATeIMPedance Example Enabling the 10 MHz low-pass filter STATe Example Setting 75 Ω input impedanceINPutportSTATe Example Disabling input port MEASurechanARRayVOLTageDC size,expected MEASurechanARRayVOLTageDC? MEASurechanARRayVOLTageDC? Maximum Voltage Resolution MEAS1ARRayVOLT? 20,1.5,@3 BATTerySTATe Example Enable memory to be non-volatileMEMory ∙ *RST Condition not affected MEMoryBATTeryCHARge? ∙ *RST Condition none Example Check the battery charge OUTPut ECLTrgnFEED Example Setting the ECLTrg0 sync pulse source OUTPutECLTrgnSTATeECLTrgnSTATe ∙ *RST Condition Parameter Range Default Name Type Values Units OUTPutEXTernal1FEEDEXTernal1FEED Boolean ARMSTARtSEQuence1 None RFTRigger SENSe12ROSCillator TRIGgerSTARtSEQuence1 Example Setting the sync pulse source OUTPutEXTernal1STATeEXTernal1STATe TTLTrgnFEED OUTPutTTLTrgnFEED Numeric Through NoneARMSTARtSEQuence1 None Example Enabling sync pulse for READy on TTLTrg5 OUTPutTTLTrgnSTATe Example Enabling sync pulse output to TTLTRG0* and TTLTRG5 READchan Subsystem Command Reference READchan Command Reference READchan Subsystem SENSe SENSechanFUNCtion SENSechanFUNCtion SENSechanFUNCtion SENSechanFUNCtion Example Selecting the single ended input on channel SENSechanROSCillator EXTernalFREQuency SENSechanROSCillatorSOURce SOURce Example Setting the Reference Oscillator Source SENSechan SWEep Number Maximum Number Memory Segments SENSechan SWEepOFFSetPOINts countOFFSetPOINts count Example Setting 50 pre-arm readings on channel 1, input port SENSechan SWEepPOINts count MINimum selects 1 reading Example Setting 500 readings SENSechan VOLTageDCRANGe range selects the range for SENSechanVOLTageDCRANGe SENSechanVOLTageDC RANGe Range Measurement Resolution Allowable Setting Volts PortsComments ∙ Executable when initiated Yes Example Selecting the 102.35 Volt range on channel SENSechanVOLTageDC RESolution?RESolution? STATus Operation Status Register OPCINITiate Subsystem Syntax Questionable Signal Status RegisterSTATusOPCINITiate OPERationQUEStionableCONDition? OPERationQUEStionableENABleSTATusOPERationQUEStionableCONDition? Example Setting the Operation register enable mask STATusOPERationQUEStionableEVENt?OPERationQUEStionableEVENt? Through +32767 None Non-decimal Numeric STATusOPERationQUEStionableNTRansition OPERationQUEStionablePTRansition STATusPRESet PRESet ERRor? Example Reading the error queueSYSTem VERSion? Command Reference TRIGger Subsystem TRIGger TRIGger Subsystem Command Reference TRIGgerSTARtCOUNt Example Taking 20 readings 8 pre-arm and 12 post-arm TRIGgerSTARtIMMediate STARtSOURce TRIGgerSTARtSOURce Bushold TRIGgerSTARtTIMer1 STARtTIMer1Example Setting the start trigger source Reference period to TRIGgerSTARtTIMer1 STARtTIMer2 Period Value Table∙ *RST Condition 5.0E-8 seconds Multiple Period TRIGgerSTARtTIMer2 ∙ *RST Condition 1.0E-7 seconds VINStrument Local Bus transfers VME VXI data transfer Bus transfers Data voltagelist VINStrument CONFigureLBUSFEED VINStrumentCONFigureLBUSMEMoryINITiate CONFigureLBUSMEMoryINITiate VINStrumentCONFigureLBUSMODE CONFigureLBUSMODE VINStrumentCONFigureLBUSRESet CONFigureLBUSRESetExample Setting the Local Bus operation mode APPendGENerate None INSertOFF PIPeline VINStrumentCONFigureLBUSSENDPOINts CONFigureLBUSSENDPOINts Boolean On OFF None VINStrumentCONFigureLBUSSENDPOINtsAUTOCONFigureLBUSSENDPOINtsAUTO VINStrumentCONFigureTESTDATA voltagelist configures VINStrumentCONFigureTESTDATACONFigureTESTDATA ∙ *RST Condition none Example Testing Local Bus operation VINStrumentCONFigureVMEFEED VINStrumentCONFigureVMEMEMoryINITiate CONFigureVMEMEMoryINITiate VINStrumentCONFigureVMEMODE CONFigureVMEMODE VINStrumentCONFigureVMESENDADDRessDATA? CONFigureVMESENDADDRessDATA?Example Setting the VXIbus data transfer bus operation mode GENerateOFF None VINStrumentIDENtity? HEWLETT-PACKARD Virtual INSTRUMENT,ANY ATOD,0,A.01.00 IEEE-488.2 Common Commands Category Command Title DMC ∙ Executable when initiated YesCLS Example Define macro to start measurement EMC and *EMC?ESE and *ESE? Example Enable all error events ESR?GMC? String IDN? LMC?Example Query macro definition HEWLETT-PACKARD,E1429,0,A.01.00 LRN? OPC PUD and *PUD? OPC?PMC RCL Block Through 63 characters None Data String RMC RST SAV SRE and *SRE? STB? TRG TST? WAI Command Quick Reference Chapter Chapter Command Quick Reference Unmask VINStrument Scpi Confirmed Commands Scpi Conformance Information Chapter Scpi Conformance Information Scpi Conformance Information Chapter Specifications Appendix Contents Read-Out To VME BusTo Local Bus E1429B only Number of Partitions Amplitude Characteristics Signal Conditioning Total Readings per Partition Signal-to-Noise Ratio Output FormatsGain and Offset 4.3.1, note Filtering Converter Supplemental Characteristics Single-ended inputs Connector BNCWord Error Rate 4.15 qualified error level word error rate Integral Nonlinearity 4.4.3, Note Single-ended inputs, supplemental characteristics Analog Bandwidth 4.6.1 filter offEffective bits on different ranges Crosstalk between channels Appendix a Specifications Differential Inputs, supplemental characteristics Effective bits, relative to 1V single-ended range Crosstalk Frequency Sample Rate Characteristics Internal TimerTrigger Sample Clock Subsystem Timebase and Trigger additional supplemental characteristics Bus Access and Connectors General Characteristics EMC Specifications Appendix a Useful Tables ERRORCHK.C IDN.C HP BASIC, CSLFTST.C RSTCLS.C LOCALAD.C LBUS2PST.CLBUSAUTO.C STATUS.C Mode OFF EMCCalstorauto CAL1VAL DEL SourSLOP1 POS Table 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 System Configuration Register Programming Reading and Writing to the Registers Register reads and writes are 8-bits Addressing the Registers Figure C-1. HP E1429A/B A24 Address Space Determining the A24 Base Address Appendix C Register Programming A24READ.C Register Descriptions A24 Register Table See Base + Input Configuration Registers A/D Status RegisterA/D Serial Register Base +0316 Base +0B16 A/D Parallel Strobe RegisterA/D Shift Register Bit Name Function Arm and Trigger Configuration Registers Abort and Arm Immediate RegisterArm Status Register Base + Timebase Initiation Registerbase + Arm Source Register Arm Source Register Power-on/Reset SettingsArm Internal Bus Registerbase + Base + 4B16 Arm Control Register Power-on/Reset SettingsArm Control Register Base + 4D16 Trigger Source Register Power-on/Reset SettingsTrigger Source Register Register Programming Appendix C Base + 4F16 Reference Oscillator Register Power-on/Reset SettingsReference Oscillator Register Arm Count Latch Register Arm delay Register Base + 5116 and base +5316Arm Count Register Base + 5516 and base + Trigger Immediate Registerbase + 5D16 Decade Division RegisterBinary Division Register Base +6116 Pre-Arm Reading Count Register power-On/Reset Settings Post-Arm Reading Count Register power-On/Reset SettingsPre-Arm Reading Count Registers Base + 7316 and base + Traffic Register Power-on/Reset Settings Memory Control RegistersTraffic Register Base +0216 Data Register Pulse RegisterChannel ID Register Base +2116 Memory Control Register Power-on/Reset SettingsMemory Control Register Memory Address Registers Base +2316 to base +2716 Terminal Address Register Base Address RegistersBase +2B16 Base +2D16 and base +2F16 Using the A/D Shift Register Figure C-2. Accessing the A/D Shift Register Bit Name Setting Setting Measurement Range Setting the Input ImpedanceProcedure Enabling the 10 MHz Filter Input Post 14 dB Attenuator Bits Bits 34 Bits 35 37,45 38,46 Checking the Idle State Setting the Digitizer Configuration Setting the Arm Sources Setting the Arm Count Setting the Arm Delay Setting the Reference Source Setting the Trigger Source Sending an Arm Immediate Signal Sending a Trigger Immediate Signal Aborting Measurements Re-initiating the Digitizer Initializing Digitizer Memory Appendix C Register Programming Initializing Initiating Timebase Processor MSB LSB Timebase reset Trigger countSample rate Data source Count is 1 and the post-arm count is y-3 Midsb LSB Register Programming Appendix C Retrieving Data from Memory Initializing Digitizer Memory to Retrieve Data Register 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 Local Bus Interleaved Transfers Interleaved Transfers Setting Interleaved Transfer Mode Local Bus Interleaved Transfers Appendix D Procedure LBUSINTR.C Trigstarsour ECLT0 Trigstarsour TIMTrigstartim 1E-6 OUTPECLT0FEED ’TRIG’ Tracdef SET1 Store readings 80 bytes in SET1 IOOUTPUTSADDRI, Abor IOOUTPUTSADDRMEM, *OPC?IOOUTPUTSADDRG, Abor Local Bus Interleaved Transfers Appendix D Appendix D Local Bus Interleaved Transfers Local Bus Interleaved Transfers Appendix D Index HP E1429A/B User’s Manual Index Index 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