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HP 34970A manual Mww

Models: 34970A

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Chapter 8 Tutorial

Measurement Fundamentals

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HP 34970A manual Mww

Contents

Ow INURFg k D Fo Y b kr C C v hPage No Changes Scan Use the Menu to Yh R Fo Y k Zy y Yh AFD7P HS y Yy y Y y yKs GHPDEc FDe c p ∙ dKs GHPDICLc feh p Ks GHPDGc FDe CiKs GHPDHc H w p ∙ d BHE8 Ks GHPDMc p pKs GHPDOc HDe vg Hs r F7o r8 Fo Delhax 6 8 a Express ExchangeContents Contents Contents Contents Page Shift w To Prepare the Instrument for Use User’s Guide5 Service Guide5 Quick Reference Guide5To install the software, see Instrument does not turn on properly, seeAdd/Remove Programs Install/Uninstall Installing HP BenchLink Data Logger SoftwareSettings Control Panel File Run fww xw \setup0H1 To Connect Wiring to a Module WzwMl lil l To Set the Time and Date To Configure a Channel for Scanning Jyw877 Qw z wz zyw Ww yw Yz yw wyTo Copy a Channel Configuration $6772To Close a Channel Yzz Z3 w wwz yz w yw3 ywz w zw wz Zz yw z w w3 wUpt If the Instrument Does Not Turn OnHq FGPN8a t g 9AN w 9A8 wZwx 4 y Yy ww To Adjust the Carrying Handle Bench-top viewing positionsTo Rack Mount the Instrument Quick Start Page Page Front-Panel Menu Reference X xz Zx xConfigure system-related instrument parameters To Monitor a Single Channel 1759$/6&$1 To Set a Scan Interval$%/$6/%6 To Apply Mx+B Scaling to MeasurementsTo Configure Alarm Limits + ,$/$5021To Configure Alarm Limits To Read a Digital Input Port Ty H7 h k To Write to a Digital Output Port$567 To Read the Totalizer CountTo Output a DC Voltage To Configure the Remote Interface +3,%91,%,76 +$1*6$9 To Store the Instrument StatePage Computer System Data Acquisition System Overview Advantages DisadvantagesFo Y k 4yx Wg AFD7O Xx x AFD7O Sdd5 l Xz x x HP BenchLink Data LoggerSTcaLm p EFCSignal Routing Model Number Module Name Common UsesSystem Cabling and Connections starting on Cable Type Common Uses CommentsKxz zx x z Kzx Z3 x z x R3 U3 b5 Signal Routing and Switching Relay Cycle Count onS7v l HD8N7v 2rc3 l D7vX zzx 87 dW X x zx3 Y z z y5 Measurement Input Sdd’s signal-conditioning OSR5 Scan Count GND BWa3 HL8Y zx Xx5 p zx x x z x x zx x z5 Control Output HH8FB W 2 bWa ELI Features and Functions Features and Functions Scpi Language Conventions Scpi Language ConventionsScanning ScanningScanning Scanning Power Fails Scanning Fxx xx tz tzx 978 vt Yt z xx Scan Count Sweep the scan list 2 times Select the interval timer configurationSet the scan interval to 5 seconds Initiate the scanGroup Execute Trigger Select the bus once configuration∙ Front-Panel Operation See Scan Count on page 86 for more information Ext Trig ConnectorSelect the external trigger configuration Sx wxt vyzz tw z ttxyx Alarm Limits starting on On page 86 for more informationEx tt Mt Fxxv x ttvztFxxx vt 9 Fxxv txSctxt ∙ exx Vxytvx bxtScanning CH Delay Time AC Filter Channel Delay Integration Time Channel DelayRange Channel Delay ∙ Sctxt Readings Ttwz vtx Twz vtxGt zzxw Aux twz x vtxSingle-Channel Monitoring Single-Channel MonitoringROUTMONDATA? Scanning With External Instruments Scanning With External InstrumentsScanning With External Instruments Fx t t a xvw Fxxv t tFxvx vtx twvx Fxx tGeneral Measurement Configuration General Measurement ConfigurationChange the range setting This is the 10 Vdc range, 51⁄2 digits are displayed 101 102 Integration Time Resolution Digits Bits WX c104 105 Temperature Measurement Configuration Temperature Measurement ConfigurationTemperature Measurement Configuration Temperature , Thermocouple 109 MoX g To connect an RTD to the module’s screw terminals, see111 To connect a thermistor to the module’s screw terminals, see ∙ Remote Interface Operation You can use the MEASure? orXW c Voltage Measurement ConfigurationVoltage Measurement Configuration Mx wv tzx txUW f Mx tv tzx tw tvTo connect resistances to the module’s screw terminals, see Resistance Measurement ConfigurationResistance Measurement Configuration Applies to ac current and ac voltage measurements only Current Measurement ConfigurationCurrent Measurement Configuration 117 Sensfreqranglow 3,@203 Select the slow timeout 3 Hz Frequency Measurement ConfigurationFrequency Measurement Configuration Mx+B Scaling Mx+B ScalingVy x x tx tux Xtx x Strain Gage Measurements on121 Alarm Limits Alarm LimitsUx yzx tz x y Using the Alarm Output Lines on Then, choose from the following alarm conditions Alarm queue is cleared when you read the alarms 126 127 Alarms Connector Oxt y tt Otz x y x x vtx x x vtzxOxt tt 130 131 Pt tw y /wxvt 8=B0 Calccompmask command decimalResult no alarm generated Or resultDigital Input Operations Digital Input OperationsMww 79 xtw t ExtwExtw u Totalizer Operations Totalizer Operations136 137 Digital Output Operations Digital Output OperationsX vxM Xx / PMO vt05 DAC Output OperationsDAC Output Operations System-Related Operations System-Related Operations141 Vx z Extw tx xExx Vxytvx bxt Turns on. See the Uc =EC7M fxvx TwxXt t z uxx Returns 0 if the self-test is successful or 1 if it fails144 Fxx Fxt Wx 83 8EECHEWLETT-PACKARD,34901A,0,X.X System-Related Operations 148 NWkc f Vtxx fOcV yx ytx5BkcV U Remote Interface ConfigurationRemote Interface Configuration 151 Vt xx utw x ytx NDC5KDC5 3mnCDC5 Lt vx y vxw y y5154 Calibration Overview Calibration Overview156 Hv w vwx 158 159 Factory Reset State Factory Reset StateInstrument Preset State Instrument Preset StateMultiplexer Module Default Settings Multiplexer Module Default SettingsSx xvyvt xtv 4w3 yx x x xv vt E5 Module OverviewModule Overview HP 34901A 20-Channel Multiplexer HP 34901A 20-Channel MultiplexerSlot Number Name Function CommentsHP 34902A 16-Channel Multiplexer HP 34902A 16-Channel Multiplexer167 HP 34903A 20-Channel Actuator HP 34903A 20-Channel Actuator169 HP 34904A 4x8 Matrix Switch HP 34904A 4x8 Matrix SwitchName Comments HP 34905A/6A Dual 4-Channel RF Multiplexers HP 34905A/6A Dual 4-Channel RF Multiplexers173 HP 34907A Multifunction Module HP 34907A Multifunction ModuleTotalizer Slot Number 100 200Digital Input / Output DAC OutputHP 34908A 40-Channel Single-Ended Multiplexer HP 34908A 40-Channel Single-Ended Multiplexer177 Remote Interface Reference Remote Interface Reference Scpi Command Summary Scpi Command SummaryEyy Zz vz 99B Scpi Command Summary Scan Measurement CommandsMonitor Commands Zz vz 9CScpi Command Summary Scan Configuration Commands Zz vz Scpi Command Summary Scan Statistics CommandsScan Memory Commands Zz vz 9AScpi Command Summary Scanning With an External Instrument Zz vz 9EScpi Command Summary Temperature Configuration Commands Zz vz 98EScpi Command Summary Voltage Configuration Commands Scpi Command Summary Resistance Configuration Commands Scpi Command Summary Current Configuration Commands Zz vz Kvy vz 98 vy Ud E78N zz z5191 Scpi Command Summary Mx+B Scaling Commands Scpi Command Summary Alarm Limit Commands Zz vz 9AB Scpi Command Summary Digital Input CommandsTotalizer Commands Switch Control Commands Scpi Command Summary Digital Output CommandsDAC Output Commands Zz vz 9ADZz vz 99D Scpi Command Summary Scan Triggering CommandsState Storage Commands Zz vz 9B8Scpi Command Summary System-Related Commands Zz vz 9BZz vz 9BE Scpi Command Summary Interface Configuration CommandsStatus System Commands Zz vz 9DBZz vz 9E9 Scpi Command Summary Calibration CommandsService-Related Commands Scpi Command Summary Ieee 488.2 Common Commands Simplified Programming Overview Simplified Programming OverviewINITiate xy z vy 5 iz z CONFigure zy yvz wMEASure? v z vz Xy z y zvyRange 41⁄2 Digits Gz z READ? xvy z z Xv zy zyv w z FETCh? xv3 zxz z Vy vz zy vy z205 V v zz vzy z Xv3 ABORt x Qzxz Pzvzz vzGeneral Measurement Configuration starting on MEASure? and CONFigure CommandsMEASure? and CONFigure Commands MEASure? Command SyntaxMEASureVOLTageDC? MEASureVOLTageAC? MEASureTEMPerature? RTDFRTD,8591DEFYzz MINMAXDEF, @Pz vz vz vzy Xv 98 vy Ud E78N zz z5 MEASureRESistance? MEASureFRESistance?MEASureCURRentDC? MEASureCURRentAC? MEASureFREQuency? MEASurePERiod?MEASureTOTalize? READRRESet ,@ MEASureDIGitalBYTE? @CONFigureTEMPerature RTDFRTD,8591DEF MEASure? and CONFigure Commands CONFigure Command SyntaxCONFigureTEMPerature TCouple,BEJKNRSTDEF Minmaxdef ,@t CONFigureCURRentDC CONFigureCURRentAC CONFigureVOLTageDC CONFigureVOLTageAC AutominmaxdefCONFigureRESistance CONFigureFRESistance Pzzvzz vz vzy xv 98 vy Ud E78N zz z5CONFigureTOTalize READRRESet ,@ CONFigureFREQuency CONFigurePERiod AutominmaxdefCONFigureDIGitalBYTE @ CONFigure? @xSee also General Measurement Configuration in starting on Setting the Function, Range, and ResolutionSetting the Function, Range, and Resolution SENSeFUNCtionRESistanceRANGe? @x SENSe VOLTageDCRANGe? @xVOLTageACRANGe? @x FRESistanceRANGe? @xFRESistanceRESolution? @x SENSe VOLTageDCRESolution? @xRESistanceRESolution? @x CURRentDCRESolution? @xFRESistanceAPERture? @x SENSe VOLTageDCAPERture? @xRESistanceAPERture? @x CURRentDCAPERture? @xRESistance SENSe TEMPeratureVOLTageDC FRESistanceTemperature Configuration Commands General Temperature CommandsTemperature Configuration Commands Thermocouple Commands SENSeTEMPeratureRJUNction? @x Temperature Configuration Commands RTD Commands Thermistor CommandsINPut IMPedanceAUTO OFFON,@x IMPedanceAUTO? @x Voltage Configuration CommandsSee also Voltage Measurement Configuration in starting on SENSe Zeroauto OFFONCEON,@x ZEROAUTO? @xResistance Configuration Commands Current Configuration CommandsSee also Frequency Measurement Configuration in starting on Frequency Configuration CommandsFrequency Configuration Commands See also Scanning in starting on Scanning OverviewScanning Overview Scanning Overview ROUTe Scan @ SCAN? Scanning Overview Scanning CommandsTRIGger SOURce BUSIMMediateEXTernalALARm1234TIMer SOURce? ROUTeSCANSIZE?CHANnelDELay? @x TRIGger TIMer y Minmax TIMer?ROUTe CHANnelDELay y TRIGger COUNt x MINMAXINFinity COUNt?INITiate ROUTe CHANnelDELayAUTO OFFON,@x CHANnelDELayAUTO? @xABORt FORMat READingCHANnel Offon READingCHANnel? Scanning Overview Reading Format CommandsFORMat READingALARm Offon READingALARm? FORMat READingTIMETYPE ABSoluteRELative READingTIMETYPE? FORMat READingTIME Offon READingTIME?FORMat READingUNIT Offon READingUNIT? Hz vxzCALCulateAVERageMINimumTIME? @x Scanning Overview Scan Statistics CommandsCALCulateAVERageMINimum? @x CALCulateAVERageMAXimum? @xCALCulateAVERageCOUNt? @x CALCulateAVERageAVERage? @xCALCulateAVERagePTPeak? @x CALCulateAVERageCLEar @xDATAREMove? t Scanning Overview Scan Memory CommandsDATAPOINts? FETCh? See Reading Format Commands onSYSTemTIMESCAN? ? txSingle-Channel Monitoring Overview Single-Channel Monitoring OverviewROUTeMONitorDATA? ROUTe MONitor @xvz MONitor?ROUTe MONitorSTATe Offon MONitorSTATe? Scanning With an External Instrument TRIGger SOURce BUSIMMediateEXTernalTIMer SOURce? TRIGger COUNt z MINMAXINFinity COUNt? Y z v Qaa ywy y Ud EC7N5 INSTrument ROUTe CHANnelFWIRe Offon ,@x CHANnelFWIRe? @xINSTrumentDMMINSTalled? See also Mx+B Scaling in starting on Mx+B Scaling OverviewMx+B Scaling Overview CALCulate SCALeOFFSet ,@xt SCALeOFFSet? @x Mx+B Scaling Overview Mx+B Scaling CommandsCALCulate SCALeGAIN v ,@xt SCALeGAIN? @x CALCulate SCALeUNIT zyt SCALeUNIT? @xCALCulateSCALeOFFSetNULL @x CALCulate SCALeSTATe OFFON,@x SCALeSTATe? @xSee also Alarm Limits in starting on Alarm System OverviewAlarm System Overview Alarm System Overview Calclimitupper MAX,@101LOWER 9,@101LOWERSTATE on CALCulate LIMitUPPer z LIMitUPPer? @x Alarm System Overview Alarm Limit CommandsOUTPut ALARm1234SOURce @xt ALARm1234SOURce? CALCulate LIMitUPPerSTATe OFFON,@xt LIMitUPPerSTATe? @xCALCulate LIMitLOWerSTATe OFFON,@xt LIMitLOWerSTATe? @x SYSTemALARm?CALCulate LIMitLOWer z LIMitLOWer? @x OUTPut ALARmSLOPe NEGativePOSitive ALARmSLOPe? Alarm System Overview Alarm Output CommandsOUTPut ALARmMODE LATChTRACk ALARmMODE? Vz xvz z5CALCulate COMPareDATA yvv ,@xt COMPareDATA? @x Alarm System Overview Digital I/O Alarm CommandsCALCulate COMPareTYPE EQUalNEQual,@x COMPareTYPE? @x CALCulate COMPareMASK COMPareMASK? @x CALCulate COMPareSTATe OFFON,@x COMPareSTATe? @xSENSeDIGitalDATABYTEWORD? @x Digital Input CommandsSee also Digital Input Operations in starting on See also Totalizer Operations in starting on Totalizer CommandsSENSe TOTalizeTYPE READRRESet,@x TOTalizeTYPE? @x SENSeTOTalizeCLEarIMMediate @x Commands see Reading Format Commands onSENSe TOTalizeSLOPe NEGativePOSitive,@x TOTalizeSLOPe? @x SENSeTOTalizeDATA? @xSOURce DIGitalDATABYTEWORD yvv ,@xt DIGitalDATABYTEWORD? @x Digital Output CommandsDAC Output Commands SOURceDIGitalSTATe? @xROUTe Open @x OPEN? @x Switch Control CommandsROUTe CLOSe @x CLOSeEXCLusive @x CLOSe? @x SYSTemCPON 100200300ALL ROUTe CHANnelFWIRe Offon , @ CHANnelFWIRe? @ROUTeDONE? Zv zRCL State Storage CommandsSAV MEMorySTATe Name 12345 ,z NAME? MEMorySTATeDELeteMEMoryNSTates? RECallAUTO?MEMorySTATeVALid? SYSTemDATE? System-Related CommandsSYSTemDATE 3 3yy SYSTemTIME 3SYSTemCTYPe? DIAGnostic Pokeslotdata 100200300, zyt PEEKSLOTDATA?Oz v 7 DISPlayTEXTCLEar DISPlay Offon DISPlay?DISPlay Text zyt Fxz5 SYSTemPRESetINSTrument DMM Offon Gfxz5SYSTemVERSion? SYSTemERRor?Gzz xv v xz z Ud EC7N z vz5 Interface Configuration Commands Gh6 Sy d RS-232 Interface ConfigurationRS-232 Interface Configuration Gh6 Gh6 Tyyy Yzv Or xz xvwzUd EC7N Zz yz Modem CommunicationsModem Communications For more information, see Flow Control Selection onNy yO Scpi Status SystemNy y S gO Ny yy gOHP 34970A Status System Definition Bit Definitions Status Byte RegisterDecimal Bit Number 128Vvzz v xz Xzy wz zzx v gzv d5 Ghgf2 yGzv d zzxzy vz hzz3 yxv w gzv d xzv Yxvz vzx Xz5 iz z Ly QQm2 S S1024 Bit Definitions Questionable Data Register512 2048Scpi Status System Bit Definitions Standard Event Register Scpi Status System Bit Definitions Alarm Register Dy g Bit Definitions Standard Operation RegisterVv xzy xvz C z z Gv g fz5 fzzvz Status System CommandsStatus Byte Register Commands Gzz z wz vz 9CC z zz wzGzz z wz vz 9D7 z zz wz Status System Commands Questionable Data Register CommandsSTATusQUEStionableENABle zv STATusQUEStionableENABle? STATusQUEStionableCONDition?ESE zv Status System Commands Standard Event Register CommandsGzz z wz vz 9D9 z zz wz STATusALARmEVENt? Status System Commands Alarm Register CommandsSTATusALARmCONDition? STATusALARmENABle zv STATusALARmENABle?Gzz z wz vz 9DA z zz wz Status System Commands Standard Operation Register CommandsSTATusOPERationENABle zv STATusOPERationENABle? STATusOPERationCONDition?DATAPOINtsEVENtTHReshold t DATAPOINtsEVENtTHReshold? Miscellaneous Status Register CommandsSTATusPRESet PSCCALibrationCOUNt? Calibration CommandsCALibration? CALibrationSECureCODE txyzCALibrationSTRing? CALibrationSECureSTATe OFFON,xyz CALibrationSECureSTATe?CALibrationSTRing zyt CALibrationVALue z CALibrationVALue?DIAGnosticDMMCYCLesCLEar Service-Related CommandsDIAGnosticDMMCYCLes? DIAGnosticRELayCYCLes? @xPreset state. h xy zz zzxPRESET z fxz5 WAIScpi gvyvy Py vw V is an An Introduction to the Scpi LanguageAn Introduction to the Scpi Language Syy i byy Routchandelay 1TRIGSOUR EXT Wvvxz Fy hHSeY Sy HSeY ey Channel list parameters specify one or Hz ABORt x xyzy v vz v Using Device ClearUsing Device Clear Page Error ∙ x o u103 Execution Errors 101102 105123 Execution Errors 114j121 124211 Execution Errors 168178 213410 Execution Errors 230310 350 420202 Instrument Errors 111201 203226 Instrument Errors 221225 251272 Instrument Errors 261271 281306 Instrument Errors 303305 307511 Instrument Errors 501502 512603 Self-Test Errors601 602 604702 703 Calibration Errors701 704722 Calibration Errors 710 720721 723Error Messages Page BA8 Insert G68Example Programs for Excel Excel 7.0 Example takeReadings Macro VISAaddr =BAB BAC Excel 7.0 Example ScanChannels Macro Dim columnIndex As IntegerBAF BAG Ck qdnT User’s Guide6 Example Programs for C and C++Ck qdnT User’s Guide6 o ++ Example dacout.c ++ Example statreg.c BB9 Page AG8 ABAAFF AG=Gz bz 0z System Cabling and ConnectionsLz k UzzCable Type Nominal Impedance Capacitance Attenuation 99= LvLv 3uqyu Uj m Copper-toGxuuB Gxuyw qs u Z Uff4 Refer to Measurement Input on WuqMeasurement Fundamentals Wsu Integration Time PLCsBz mz 9GG8 Qysq Dxu qsuvqsu ytu qsusyvysq Vq tu4Measurement Fundamentals Internal DMM Internal DMM Ice Bath Ez b Measurement Fundamentals Nickel-Chromium Nickel-Aluminum Temperature Probe Type Pos + Lead Neg LeadIron Constantan Copper ConstantanZ4 z MWW2 ABCNm w 99AStuqq Connection a Connection B Sl py Sk p j HI A1 AC to DC Converter X10 X100 360 361 Km w Example Calculating Measurement Error Hj s N5zzz z5 z z 0 z AAD16Voltage Measured = ‾‾‾‾‾‾‾‾‾‾‾‾√ V 2 + Noise MWW On-Card Nm m Km mTo Amplifier Analog-to-Digital Converter HI-Source HI-Sense Offset Compensation on page 115 for more information For more information on channel delay, seeAB8 Does not sxquZz4 z FF Insulating Material Resistance Range Moisture AbsorbingAi Sz e HI Source HI Sense LO Sense LO Source Strain DMM Sensitivity 376 Measurement Fundamentals Low-Level Signal Multiplexing and Switching V3Vu cyw Wuy q cyxyELo 4 AC8HI + Source Sense OUT COM H GND COM L Zz AE Module Reference Module BankActuators and General-Purpose Switching Rp = Dxu q u Ytu u qt Dxuuvu2 xu yy b Sq ru t qB Module Reference Matrix Switching Wqy cyxyMatrix Module RF Signal Multiplexing BO cyw9A7 Multifunction Module 393 = 24 k Ω GND TTL AC For more information on cabling noise, see R B8 R URT z16 ∙ d qy s2 u .b Yu tyqwq Qr/ w EnkmF yU55R Nkm o Relay Life and Preventative Maintenance Buq ZQsuqsu wuqq Uu utysuqqy4 AOO AHeAHf AOTDC, Resistance, and Temperature Accuracy Specifications DC VoltageDC Measurement and Operating Characteristics Ki u yAC Accuracy Specifications Gi gAC Measurement and Operating Characteristics Gi uMeasurement Rates and System Characteristics Single Channel Measurement Rates 1 System CharacteristicsModule Specifications TagHOr7 TagHPr7 TagHfr7 TagHTr7 TagHarTagHcr7 TagHdr Typical AC Performance Graphs TagHer Product and Module Dimensions To Calculate Total Measurement Error Understanding the % of reading Error oUnderstanding the % of range Error o × 1,000,000Interpreting Internal DMM Specifications 417 CriteriaBdR u LYR uConfiguring for Highest Accuracy Measurements Vhh 87 b 87 q ∙ p =4 ∙ n ∙ n c 77 =8FIndex Index CAB CAC CAD CAE CAF CAG CAH CB8 CB9 CBA CBB Declaration of Conformity Ajjh