Frequency Sample Rate Characteristics Internal Timer | HP E1429A

Frequency and

Sample Rate

Characteristics

Internal Timer

Crosstalk (4.11)

On 1V range, relative to full-scale input:

DC - 1 MHz	-75 dB
1 - 10 MHz	-70 dB

Both channels always sample simultaneously at the indicated rates and times.

Tolerances: All internally-generated frequencies and rates are ±0.0075% initial tolerance.

The Internal Timer generates time intervals useful in controlling the sample rate. It divides a reference frequency by 1x10n, 2x10n, or 4x10n, n = 0 to 8. When the reference frequency is the internal 20 MHz oscillator, the resulting rates are from 0.05 Sa/s to 20 MSa/s in a 1,2,5 sequence. Other programmable choices for the reference source are VXI CLK10, the ECL Trigger lines, and the Ext2 BNC.

Trigger (Sample Clock) Subsystem

Each event in this subsystem causes one A/D conversion in both channels. (In Standard Commands for Programmable Instruments (SCPI), this is the meaning of "Trigger". The SCPI term for the commencement of a series of one or more triggers is "Arm".)

Rate: (Internal Timer using built-in reference oscillator) 0.05 Sa/s to 20 MSa/s in 5,1,2 sequence

External: VXI Trigger Busses (TTL and ECL), External BNCs, software, or VME Read cycle

Post-Count: 1, or 7 to 224-1, or continuous. (This specifies the desired number of sample triggers after the Arm event.)

Additional limitations apply when the "Pre-Count"feature is used; see below.

Pre-Count: 0, or 3 to 65535. When this mode is used (pre-count0)

the Digitizer samples continuously until the pre-count is satisfied and then an Arm event occurs. Memory is used as a circular buffer with older readings overwritten by newer readings. The programmed

pre-count value specifies the number of pre-arm samples to be protected from overwriting by post-arm sample data. This mode limits the number of Post-Count read-ings: The total of (pre-count + post-count) must be no larger than the memory partition size.

Appendix A

Specifications 325

Image 325

HP E1429A manual Frequency Sample Rate Characteristics Internal Timer, Trigger Sample Clock Subsystem, Crosstalk

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 1 HP E1429A/B 20 MSa/s 2-Channel Digitizer User’s Manual HP E1429A/B Features and VXIbus Configuration Chapter Contents Getting Started Chapter HP E1429A/B VXIbus Configuration HP E1429A/B VXIbus Configuration Preparation 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 Controller Introductory Programs Sending the *IDN? CommandHEWLETT-PACKARD,E1429A,0,A.02.00 TST? IOOUTPUTSADDR, *IDN? Repeat Output 70905SYSTERR? SLFTST.C IOOUTPUTSADDR, *TST? Resetting Clearing DigitizerIOOUTPUTSADDR, SYSTERR? IOOUTPUTSADDR, DIAGTEST? IOOUTPUTSADDR, *RST*CLS Subend LRN? Querying Digitizer ConfigurationInteger Repeat LRN.C Chapter Getting Started TRIGSTARTIM1 10E-6 Instrument and Programming Languages OUTPEXT1STAT Ontrigsour EXT1OUTPEXT1STAT OFF Language Programs Microsoft QuickC clhpib.lib Command Line Compiling∙ Microsoft QuickC ∙ Turbo C++ CLHPIB.LIB Compiling in the Integrated Environment Other subsystems Introduction to Programming Using the MEASure CONFigure Commands Port HP E1429A Programming Sequence Programming Sequence Configuring 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 CONFigure CONF.C IOOUTPUTSADDR, FETC1? Querying Command Settings QUERY.C Enable Intr ERRORCHK.C Abort Digitizer Command Module Deadlock Where to go Next Programming Language Using the Digitizer INPUT.C Configuring the Digitizer Input ARMCNT.C Taking a Burst of Readings ARMLEVEL.C Level Arming PREPOST.C Pre- and Post-Arm ReadingsARMSOUR1 EXT SAMPLE.C Specifying a Sample RateARMSOUR1 IMM Trigsour TIM DUALSAMP.C Dual Rate SamplingARMSLOP1 POS Senssweoffspoin Using Multiple Digitizers MULTAD.C OUTPTTLT0IMM OUTPTTLT0STAT onFETC2? PACKED.C Using the Packed Data Format Diagchanlab Form Pack For i = 0 i 20 i++ IOOUTPUTSADDR, SYSTERR? VMEREAL.C VME Bus Data Transfers Vinsconfvmemode GEN Trigstarsour VMEVinsconfvmefeed ’CONVCHAN1’ On Next Using the Digitizer Chapter VMESEG1.C Armstarcoun Armstarsour IMM On Next IOOUTPUTSADDR, *RST*CLS IOOUTPUTSADDR, SYSTERR? DOS VME Bus Data Transfers Using an Embedded Controller On Next Using the Digitizer Chapter On Next On Next INST.H #include Files Inst INST.CPP On Next Chapter Using the Digitizer E1429.CPP E1429.H Local Bus Data Transfers Vinslbusmode GEN VinslbusresVinslbusfeed ’CONVBOTH’ Formdata Pack IOOUTPUTSADDR, Init IOOUTPUTSADDRMEM, Init Using 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 TTLT0 Vinslbusmode INS OUTPTTLT0FEED ’READY’ IOOUTPUTSADDRG, Init IOOUTPUTSADDRG, *OPC?,5 IOOUTPUTSADDRI, Init Using the Digitizer Chapter Chapter Using the Digitizer Using the Digitizer Chapter STATUS.C Using the Digitizer Status Registers Using the Digitizer Chapter Understanding the Digitizer HP E1429 Digitizer Block Diagram Understanding the HP E1429 Digitizer Chapter Message and Register Interfaces Digitizer Command Paths Digitizer Input Section Scpi Command Control SENSechan VOLTage Range range Enabling the 10 MHz Input Filter Setting the Input ImpedanceInverting and Non-inverting Differential Input Ports Digitizer Attenuators Setting the Signal Range Sensvoltrang Using the Single-Ended Input 1V Range Arming and Triggering HP E1429 Digitizer State Diagram 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 Enabling the Synchronization Signal Routing the Signal to a Source Offset Triggering Digitizer TRIGgerSTARtTIMer1 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 Converter HP E1429 Digitizer Data Flow HP E1429 Digitizer Reading Storage 10. Memory Segments with Pre and Post-arm Readings MEMory Subsystem Digitizer Data Formats Determining the Battery Charge Definite Length Arbitrary Block Header Packed Reading Conversions HP Basic Example Removing the Arbitrary Block Header Language Example 16-bit readings Readings READ? 11. Retrieving Readings from Digitizer Memory Retrieving Readings Using FETCh? Retrieving Readings UsingREAD? FETChing Readings from Memory Separating Pre- and Post-Arm Readings Determining Number of Readings FETChed Using 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 Address Execute 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 Definitions 15. HP E1429B Local Bus Data Transfer Protocol How Data is Transferred Understanding the HP E1429 Digitizer Chapter Local Bus Transfer Configurations Digitizer Local Bus CommandsLbus Send EOF 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 Register STATusOPERationCONDition? Standard Event Status Register Standard Event Status GroupPON CME EXE DDE QYE Reading 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? Spoll Synchronizing the Digitizer Saving Digitizer ConfigurationsOPC OPC? WAI RST How to Save and Recall a Configuration Understanding the HP E1429 Digitizer Chapter Command Reference Common Command Format Command Types Abbreviated Commands Scpi Command FormatARM Armlevneg Implied Optional Keywords Variable Command Syntax Scpi Command ParametersParameter Types Explanations, Examples OUTPECLT0FEED ’EXT’ OUTPECLT0FEED \EXT\ Querying Parameter Settings Scpi Command ExecutionOptional Parameters Definite length block MIN 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 measurement ARM STARtCOUNt ARMSTARtCOUNtSyntax Subsystem Parameters Parameter Range Default Name Type Values ARMSTARtCOUNt STARtDELay ARMSTARtDELayParameter Range Default Name Type Values MINimumMAXimum ARMSTARtIMMediate Example Setting the arming delaySTARtIMMediate ∙ *RST Condition none STARtLEVelchanNEGative voltage ARMSTARtLEVelchanNEGative voltageExample Arming for measurement Comments ∙ Executable while initiated No STARtLEVelchanPOSitive voltage ARMSTARtLEVelchanPOSitive voltage STARtSLOPen ARMSTARtSLOPen Example Setting the arm slope ARMSTARtSOURcen Example Setting two arm start sources ∙ Related Commands ARMSTARtSLOPen , ARMSTARtLEVelchan COUNt? CALibrationchanSubsystem Syntax Numeric None Data CALibrationchanDATA Assign @X to 70905FORMAT OFF Comments ∙ Executable when initiated No ∙ Coupled Command No DELay CALibrationchanDELay Gain CALibrationchanGAIN Seconds Confarrvolt 100,4.8,DEF,@1 ∙ *RST Condition none Example Performing a gain calibration CALibrationchanSECureCODE CALibrationchanSECureSTATe CALibrationchan SECureSTATe mode ,code enables or disables CALibrationchanSTORe CALibrationchanSTOReAUTO CALibrationchan STOReAUTO mode selects whether or notVALue Example Turn automatic storage of calibration values off CALibrationchanVALue ∙ 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 Resolution CONFARRayVOLT 20,1.5,@3 CALibrationchan CONVerge? DIAGnostic CALibrationchan 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 Poke SGET? DIAGnosticSGET?Sput TEST? FETChchan Command Reference FETChchan Subsystem FETChchan Subsystem Command Reference FETC1COUN? FETChchanCOUNt? ∙ *RST Condition none Example Recovering readings in memory FETChchanRECover? Subsystem FORMat FORMat Example 1 Setting the data format to 64 bit reals ∙ Related Commands READ?, FETCh?FORMatDATA IMMediate INITiate Example Placing the HP E1429A in the wait-for-arm state INITiateIMMediate Subsystem INPutport INPutport INPutportFILTerLPASsSTATe INPutportFILTerLPASsSTATe mode enables or disablesIMPedance Example Enabling the 10 MHz low-pass filter INPutportSTATe 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 OUTPut OUTPutECLTrgnSTATe Example Setting the ECLTrg0 sync pulse sourceECLTrgnSTATe ∙ *RST Condition OUTPutEXTernal1FEED Parameter Range Default Name Type Values UnitsEXTernal1FEED Boolean TRIGgerSTARtSEQuence1 ARMSTARtSEQuence1 None RFTRigger SENSe12ROSCillator OUTPutEXTernal1STATe Example Setting the sync pulse sourceEXTernal1STATe TTLTrgnFEED Numeric Through None OUTPutTTLTrgnFEEDARMSTARtSEQuence1 None Example Enabling sync pulse for READy on TTLTrg5 Example Enabling sync pulse output to TTLTRG0* and TTLTRG5 OUTPutTTLTrgnSTATe READchan READchan Subsystem Command Reference Command Reference READchan Subsystem SENSe SENSechanFUNCtion SENSechanFUNCtion Example Selecting the single ended input on channel SENSechanFUNCtion SENSechanFUNCtion EXTernalFREQuency SENSechanROSCillator SOURce SENSechanROSCillatorSOURce Example 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 count Example 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 STATus STATusOPCINITiate Subsystem Syntax Questionable Signal Status RegisterOPCINITiate STATusOPERationQUEStionableCONDition? OPERationQUEStionableENABleOPERationQUEStionableCONDition? STATusOPERationQUEStionableEVENt? Example Setting the Operation register enable maskOPERationQUEStionableEVENt? Through +32767 None Non-decimal Numeric OPERationQUEStionablePTRansition STATusOPERationQUEStionableNTRansition PRESet STATusPRESet Example Reading the error queue ERRor?SYSTem VERSion? TRIGger Command Reference TRIGger Subsystem TRIGger Subsystem Command Reference TRIGgerSTARtCOUNt Example Taking 20 readings 8 pre-arm and 12 post-arm STARtSOURce TRIGgerSTARtIMMediate Bushold TRIGgerSTARtSOURce STARtTIMer1 TRIGgerSTARtTIMer1Example Setting the start trigger source Reference period to TRIGgerSTARtTIMer1 Period Value Table STARtTIMer2∙ *RST Condition 5.0E-8 seconds Multiple Period TRIGgerSTARtTIMer2 ∙ *RST Condition 1.0E-7 seconds Local Bus transfers VINStrument Data voltagelist VME VXI data transfer Bus transfers VINStrument CONFigureLBUSFEED CONFigureLBUSMEMoryINITiate VINStrumentCONFigureLBUSMEMoryINITiate CONFigureLBUSMODE VINStrumentCONFigureLBUSMODE CONFigureLBUSRESet VINStrumentCONFigureLBUSRESetExample Setting the Local Bus operation mode APPendGENerate None INSertOFF PIPeline CONFigureLBUSSENDPOINts VINStrumentCONFigureLBUSSENDPOINts CONFigureLBUSSENDPOINtsAUTO VINStrumentCONFigureLBUSSENDPOINtsAUTOBoolean On OFF None CONFigureTESTDATA VINStrumentCONFigureTESTDATAVINStrumentCONFigureTESTDATA voltagelist configures ∙ *RST Condition none Example Testing Local Bus operation VINStrumentCONFigureVMEFEED CONFigureVMEMEMoryINITiate VINStrumentCONFigureVMEMEMoryINITiate CONFigureVMEMODE VINStrumentCONFigureVMEMODE CONFigureVMESENDADDRessDATA? VINStrumentCONFigureVMESENDADDRessDATA?Example Setting the VXIbus data transfer bus operation mode GENerateOFF None HEWLETT-PACKARD Virtual INSTRUMENT,ANY ATOD,0,A.01.00 VINStrumentIDENtity? Category Command Title IEEE-488.2 Common Commands CLS ∙ Executable when initiated YesDMC ESE and *ESE? EMC and *EMC?Example Define macro to start measurement ESR? Example Enable all error eventsGMC? String LMC? IDN?Example Query macro definition HEWLETT-PACKARD,E1429,0,A.01.00 OPC LRN? PMC OPC?PUD and *PUD? Block Through 63 characters None Data String RCL RST RMC SRE and *SRE? SAV TRG STB? WAI TST? Command Quick Reference Chapter Chapter Command Quick Reference Unmask VINStrument Scpi Conformance Information Scpi Confirmed Commands Chapter Scpi Conformance Information Scpi Conformance Information Chapter Appendix Contents Specifications To VME Bus Read-OutTo Local Bus E1429B only Number of Partitions Total Readings per Partition Amplitude Characteristics Signal Conditioning Output Formats Signal-to-Noise RatioGain and Offset 4.3.1, note Filtering Single-ended inputs Connector BNC Converter Supplemental CharacteristicsWord Error Rate 4.15 qualified error level word error rate Integral Nonlinearity 4.4.3, Note Analog Bandwidth 4.6.1 filter off Single-ended inputs, supplemental characteristicsEffective bits on different ranges Crosstalk between channels Appendix a Specifications Effective bits, relative to 1V single-ended range Differential Inputs, supplemental characteristics Trigger 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.C LBUS2PST.C LOCALAD.CLBUSAUTO.C STATUS.C EMC Mode OFFCalstorauto CAL1VAL Sour DELSLOP1 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 Register Programming System Configuration Register reads and writes are 8-bits Reading and Writing to the Registers Figure C-1. HP E1429A/B A24 Address Space Addressing the Registers Determining the A24 Base Address Appendix C Register Programming A24READ.C Register Descriptions See A24 Register Table Base + A/D Status Register Input Configuration RegistersA/D Serial Register Base +0316 A/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 +6116 Post-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 +0216 Channel ID Register Pulse RegisterData Register Memory Control Register Memory Control Register Power-on/Reset SettingsBase +2116 Base +2316 to base +2716 Memory Address Registers Base Address Registers Terminal Address RegisterBase +2B16 Base +2D16 and base +2F16 Figure C-2. Accessing the A/D Shift Register Using the A/D Shift Register Bit Name Setting Setting the Input Impedance Setting Measurement RangeProcedure 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 Arm Sources Setting the Digitizer Configuration Setting the Arm Delay Setting the Arm Count Setting the Reference Source Sending an Arm Immediate Signal Setting the Trigger Source Aborting Measurements Sending a Trigger Immediate Signal Initializing Digitizer Memory Re-initiating the Digitizer Appendix C Register Programming MSB LSB Initializing Initiating Timebase Processor Trigger count Timebase resetSample rate Data source Count 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 Memory 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 Interleaved Transfers Local Bus Interleaved Transfers Local Bus Interleaved Transfers Appendix D Setting Interleaved Transfer Mode Procedure 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 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