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HP WaterSkis E1312A Manual
212 pages 3.53 Mb
1 HP E1312A/E1412A User’s Manual and SCPI Programming GuideEdition HP E1312A and HP E1412A Multimeter Module Setup General Information Checking the Line Frequency Reference Multimeter Functional Connections HP E1312A/E1412A Multimeter Application Information Thermal EMF Errors Loading Errors (dc volts) Leakage Current Errors Rejecting Power Line Noise Voltages Common Mode Rejection (CMR) Noise Caused by Magnetic Loops Noise Caused by Ground Loops 4-WireOhms Measurements Removing Field Wiring Resistance Errors in 2-WireOhms Measurements Power Dissipation Effects Settling Time Effects Errors in High Resistance Measurements Making High-SpeedDC and Resistance Measurements Crest Factor Errors (non-sinusoidalinputs) Loading Errors (ac volts) AC Measurements Below Full Scale Function and Range Change Internal Offset Correction Low-LevelMeasurement Errors AC Turnover Errors Contents 3 Multimeter Command Reference (continued):AVERage:AVERage :AVERage:COUNt :AVERage:MAXimum :AVERage:MINimum :DB:REFerence :DB:REFerence :DBM:REFerence :DBM:REFerence :FUNCtion :FUNCtion :LIMit:LOWer :LIMit:LOWer :LIMit:UPPer :LIMit:UPPer :NULL:OFFSet :NULL:OFFSet :STATe :STATe :COUNt :LFRequency :LFRequency :SECure:CODE :SECure:STATe :SECure:STATe :STRing :STRing :VALue :VALue :ZERO:AUTO :ZERO:AUTO :CURRent:AC :CURRent[:DC] :FREQuency :FRESistance :PERiod :RESistance :VOLTage:AC [:VOLTage[:DC]] [:VOLTage[:DC]]:RATio :POINts 4 [:IMMediate]:IMPedance:AUTO :IMPedance:AUTO :CURRent:AC :CURRent[:DC] :FREQuency :FRESistance :PERiod :RESistance :VOLTage:AC [:VOLTage[:DC]] [:VOLTage[:DC]]:RATio :TTLTrg[:STATe] :TTLTrg[:STATe] :COUNt FUNCtion FUNCtion CURRent:AC:RANGe CURRent:AC:RANGe CURRent:AC:RANGe:AUTO CURRent:AC:RANGe:AUTO CURRent:AC:RESolution CURRent:AC:RESolution CURRent[:DC]:APERture CURRent[:DC]:APERture CURRent[:DC]:NPLC CURRent[:DC]:NPLC CURRent[:DC]:RANGe CURRent[:DC]:RANGe CURRent[:DC]:RANGe:AUTO CURRent[:DC]:RANGe:AUTO CURRent[:DC]:RESolution CURRent[:DC]:RESolution DETector:BANDwidth DETector:BANDwidth FREQuency:APERture FREQuency:APERture 4 Contents 5 Multimeter Command Reference (continued)[SENSe:] (continued) FREQuency:VOLTage:RANGe:AUTO FREQuency:VOLTage:RANGe:AUTO PERiod:VOLTage:RANGe:AUTO 6 VOLTage[:DC]:RESolutionZERO:AUTO ZERO:AUTO :PRESet :QUEStionable:CONDition :QUEStionable:ENABle :QUEStionable:ENABle :QUEStionable[:EVENt] :ERRor :VERSion :DELay :DELay :DELay:AUTO :DELay:AUTO :SOURce :SOURce IEEE 488.2 Common Command Quick Reference *CLS *ESE and *ESE *ESR *IDN *OPC *OPC *RST *SRE and *SRE *STB *TST *WAI SCPI Command Quick Reference Appendix A HP E1312A and HP E1412A Multimeter Specifications To Calculate Total Measurement Error Interpreting Multimeter Specifications 6 Contents 7 Appendix BAppendix C 9 CertificationHEWLETT-PACKARDWARRANTY STATEMENT U.S. Government Restricted Rights 10 Documentation HistoryTrademarks Safety Symbols WARNINGS 11 HP E1312A Declaration of Conformityaccording to ISO/IEC Guide 22 and EN Manufacturer’s Name: Manufacturer’s Address: Product Name: Model Number: Product Options: Safety: EMC: Supplementary Information: May 8 Jim White, QA Manager 12 HP E1412A Declaration of ConformityJuly 31 Reader Comment Sheet In appreciation of your time, we will enter you in a quarterly drawing for a Hewlett-Packard Palmtop Personal Computer 13 BUSINESS REPLY MAILHEWLETT-PACKARDCOMPANY Measurement Systems Division Learning Products Department P.O. Box Loveland, CO 15 HP E1312A and HP E1412A Multimeter Module Setup25 HP E1312A/E1412A Multimeter Application Information30 The following program shows SCPI examples used to store a NULL value30 HP E1312A/E1412A Multimeter Application Information 32 sinewave inputs only33 Common Crest FactorsExample 34 For low frequencies where (f × Rs) ≤ 15(106)Ω ∙ Hz: :15(10 Hz: -100 × Rs Error (%) = R----s---+-----1M--------Ω For any frequency: 1MΩ (1MΩ)R 1 + (2π f C s)2 Rs = source resistance f= input frequency Cin = input capacitance (100pF) plus cable capacitance Temperature Coefficient Errors Overload Errors overload condition 34 HP E1312A/E1412A Multimeter Application Information 35 Voltage Measured = Vin2+ Noise236 fast filterseconds, and is useful for frequencies above 200Hz. The medium filter slow filter DC Blocking Circuitry 37 function38 This applies to all measurement functionsTable 2-6.Resolution of Power Line Cycles DC voltage ratio measurements use both the •Set the resolution using the following commands: 38 HP E1312A/E1412A Multimeter Application Information 39 Integration time applies to dc voltage, dc current, resistance andExcept for NPLCs are not applicable to the •Set integration time using the following commands: s are not applicable for the and functions 40 zero readingWhen autozero is disabled Use the following command to disable autozero or select the ONCE [SENSe:]ZERO:AUTO OFF|ONCE|ON •The multimeter has autorange mode enabled at power-onand after a module reset •Autorange thresholds: Down range at <10% of range Up range at >120% of range The multimeter will provide an overload indication by returning "9.90000000E+37 "3Hz "0 •You can set the range using any of the following commands: function 40 HP E1312A/E1412A Multimeter Application Information 41 1.Select the desired math function:2.Enable the selected math function by turning the calculate state on: Result = reading - null value •Does not apply to the DC-to-DCRatio measurements The null value is adjustable and you can set it to any value between 0 and Clearing the 42 Two Ways to Store the NULL Offset Value43 Storing the dBReference Value Storing the dBm Reference Resistance Value Set math function to DB Enable math operation CALCulate:DB:REFerence <value> Store a dB reference value dBm • Applies to dc voltage and ac voltage measurements only The choices for are: , or ohms Set math function to DBm Store a dBm reference 44 •Applies to all measurement functions•You can set the upper and lower limits to any value between 0 and Use the following commands to activate the The 44 HP E1312A/E1412A Multimeter Application Information 46 sourcethrough HP E1300/E1301A B-SizeMainframes) For example, the following program statement selects the external trigger BNC connector as the trigger source 47 Checking the Trigger Source48 The Wait-for-TriggerStateThe multimeter is triggered from the VXIbus. This mode is selected with the command You can also trigger the multimeter from the Substituting MIN for the number parameter sets the trigger count to Substituting MAX for the number parameter sets the trigger count to 50,000 48 HP E1312A/E1412A Multimeter Application Information 49 Example: Setting the Trigger CountExample: Inserting a Trigger Delay command returns one of the following numbers to the output buffer: The present trigger count (1 through 50,000) if neither •The minimum trigger count available (1) if MIN is specified •The maximum trigger count available (50,000) if MAX is specified 50 NOTE:51 Example: Setting the Sample CountThe present trigger delay (1 •The minimum trigger delay available (1μs) if MIN is specified •The maximum trigger delay available (3600 seconds) if MAX is specified 10 readings are taken, the multimeter returns to the idle state The present sample count (1 through 50,000) if neither •The minimum sample count available (1) if MIN is specified •The maximum sample count available (50,000) if MAX is specified 52 plug&playC Programs Project Type: QuickWin application (.EXE) Project Files: <source code file name>.C >.C (Microsoft compiler) (Borland compiler) Memory Model: Options | Project | Compiler | Memory Model ⇒ Large Directory Paths: Options | Directories Include File Paths: Library File Paths: (Microsoft) (Borland) Example Programs: (on driver CD) Visual Basic Programs 52 HP E1312A/E1412A Multimeter Application Information 53 Hardware UsedMEASure Command 1.Use the MEASure command to make a single measurement 2.Make several externally triggered measurements 3.Maximize measurement speed on multiple measurements 4.Maximize measurement accuracy on multiple measurements READ? Command INIT and FETC? Commands 54 Measurement Format•Readings sent to the output buffer can consist of two different lengths (bytes or characters) in Real ASCII format: Each measurement is terminated with a Line Feed by commas and EOI is sent only with the last byte. For example: LF EOI •The multimeter’s internal memory stores 512 readings maximum MEASURE1 Source Code File Use the MEAS Command to Make a Single Measurement MEASURE2 Source Code File Making Externally Triggered Measurements (multiple triggers/samples) 54 HP E1312A/E1412A Multimeter Application Information 55 Trigger source•The sample count (SAMP:COUN) is set for 10 samples per trigger 30 measurements; 10 samples for each of three triggers MEASURE3 Source Code File The autozero function is disabled to speed up the measurement process. See the 56 MEASURE4 Source Code FileMaximizing Accuracy (most accurate resolution, longer integration time) •The sample count (SAMP:COUN) is set for 10 samples per external trigger This example uses the 56 HP E1312A/E1412A Multimeter Application Information 59 HP E1412A SCAN Source Code FileSCPI command sequences for the program are as follows **** Set up the Multimeter **** Now set up the switch module Retrieve the readings from the multimeter Retrieve the AVERage math operation response from the multimeter AVERage Check the multimeter for system errors 61 SYNCHOPC Source Code FileLoop SPOLL - read the multimeter’s status byte until bit 5 (ESB) goes high. End Loop 62 SYNCHMAV Source Code FileNOTE: If 62 HP E1312A/E1412A Multimeter Application Information 63 LIMITTST Source Code FileEnter response into the computer Wait 1 second End Loop 64 Device ConfigurationVisual Engineering Environment HP VEE Select I/O Instrument from the menu bar. The dialog box pops up Select the button from the choices. Then select from the choices. This selection pops up the dialog box Fill in the Set . Then select 4.Verify Conformance is set to IEEE 488 (use default settings for all others) to close both the boxes 65 Program DescriptionStrip Chart Object In parallel with the object is a object that displays the readings of the eight channels. The has an 66 HP VEE Visual Engineering EnvironmentHP VEE The Most Productive Language for Test and Measurement HP VEE Visual Engineering Environment Technical Data 67 Multimeter Command Reference68 CommandA colon (:) always separates one command from the next lower level command as Separator shown below: Abbreviated Commands Implied Commands Colons separate the root command from the second level command (CALibration:SECure) and the second level from the third level (SECure:STATe?) 68 Multimeter Command Reference 69 ParametersParameter Types Optional Parameters 70 Table 3-1.DC Voltage Resolution versus Integration Time or Aperture TimeTable 3-2.DC Current Resolution versus Integration Time or Aperture Time 71 Table 3-4.AC Voltage: Range versus ResolutionTable 3-5.AC Current: Range versus Resolution 72 command subsystem removes the multimeter from thewait-for-trigger state and places it in the idle state is only effective when the trigger source is Subsystem Syntax Aborting a Measurement •Related Commands: INITiate, TRIGger *RST Condition: 72 Multimeter Command Reference 73 Valid Math/Measurement Function Combinations74 CALCulate:AVERage:AVERagereads the average of all readings taken since was enabled commands). The average value is cleared when CALCulate:AVERage:COUNt reads the number of readings taken since commands). The count value is cleared when is enabled by the CALCulate:AVERage:MAXimum Example Query the Maximum Value Found During an AVERage Math Operation CALCulate:AVERage:MINimum Example Query the Minimum Value Found During an AVERage Math Operation CALC:AVER:MIN 74 Multimeter Command Reference 75 stores a relative value in the dB Relative RegisterYou can set the relative value to any number between 200dBm (the values). The dB reference is stored in volatile memory Example Set the DB Reference Value queries dB reference value Example Query the DB Reference Value Set for the DB Math Operation selects the dBm reference value. Choose from: (default) The dBm reference is stored in non-volatile memory Example Set the DBM Reference Value queries the dBm reference Example Query the DBM Reference Value Set for the DBM Math Operation 76 Parameter Summaryselects the math function to be used. One function is enabled at a time with the default. The selected function MUST be enabled with relative Example Query the Calculate Math Function 77 Example Set the Lower Limitqueries the lower limit Example Query the Lower Limit Set for the LIMit Math Operation Example Set the Upper Limit queries the upper limit Example Query the Upper Limit Set for the LIMit Math Operation 78 stores a null value in the multimeter’s Null RegisterYou can set the null value to any number between 0 and 120% of the highest range, for the present function –120% of the highest range for another way to store the offset value Example Set the Null Offset Value queries the null value Example Query the Null Offset Value Set for the NULL Math Operation Example Enable the Currently Selected Calculate Math Function Example Query Whether a Math Function State is On or Off 79 The wrong line frequency setting will cause reading errors to occur:STRing <quoted string cal_value Example Query the Number of Occurrences of Point Calibrations Comments • You must execute the •Default Setting: 60Hz 60Hz •*RST does not change the line frequency setting Example Set the Line Frequency to 50Hz 80 Example Query the Line Frequency Settingnew code Example Enter a New Calibration Security Code 81 codecommand. The state is stored in <code •*RST does not change the state Example Set the Calibration State to Unsecured Example Query the Calibration Security State quoted string <quoted string Comments • The calibration message can contain up to 40 characters •Calibration security state must be OFF to store a string The calibration message is stored in 82 Example Enter Calibration Information to Record the Next Calibration DateCALibration:STRing Example Query the Calibration Message CALibration:VALue cal_value <cal_value Comment • *RST does not affect the calibration value Example Enter the Known Value for the Calibration Source Signal CALibration:VALue? queries the present calibration value CALibration:VALue Example Query the Calibration Value 82 Multimeter Command Reference 83 mode84 Example Calibrate the Active Function and Range Using the CAL:VALue85 does notesolution The CONFigure command RANGe and RESolution parameters are optional. You RESolution 86 Default Settings for CONFigure Command by Function87 CONFigure:CURRent:AC [<range>|MIN|MAX|DEF|AUTOresolution <range <resolution resolution| •The AUTO or DEFault option for the range parameter enables autorange For range: MIN = 1A; MAX = 3A To select autorange, specify To specify the (you cannot omit the parameter ). This prevents the resolution from being interpreted as a range setting Example Making AC Current Measurements CONF:CURR:AC 3,MAX 88 CONFigure:CURRent[:DC] [<range>|MIN|MAX|DEF|AUTO>|MIN|MAX|DEF]] resolution | For range: MIN = 10 mA; MAX = 3A e.g Example Making DC Current Measurements CONF:CURR 3,MAX 88 Multimeter Command Reference 90 CONFigure:FRESistance [<range>|MIN|MAX|DEF|AUTOFor range: MIN = 100 Ω; MAX =100MΩ To specify a resolution while autoranging, you must specify the parameter; Example Making 4-WireOhms Measurements CONF:FRES 1500,MAX 90 Multimeter Command Reference 92 CONFigure:RESistance [<range>|MIN|MAX|DEF|AUTOresolution |MIN|MAX|DEF For range: MIN = 100Ω; MAX =100MΩ •To specify a MIN or MAX resolution while autoranging, you must specify for range; parameter). This prevents the Example Making 2-WireOhms Measurements 92 Multimeter Command Reference 93 CONFigure:VOLTage:AC [<range>|MIN|MAX|DEF|AUTO•The MIN and MAX parameters select the minimum or maximum values for range: For range: MIN = 0.1V; MAX Example Making AC Voltage Measurements 94 CONFigure[:VOLTage[:DC]] [<range>|MIN|MAX|DEF|AUTOFor range: MIN = 100mV; MAX Example Making DC Voltage Measurements 94 Multimeter Command Reference 95 dc signal voltageHi and LO input Sense HI and LO input 96 It returns a quoted string to the output buffer in the following format:“<function> <parameter>,<parameter>” If you specify •Related Commands: CONFigure, MEASure Example Querying the Multimeter Configuration CONF String Returned: 96 Multimeter Command Reference 98 The FETCh? command retrieves measurements stored in the module’s internalThis command is most commonly used with CONFigure without error • The Multimeter’s internal memory stores 512 readings maximum Example Transferring Stored Readings to Output Buffer 99 This command is most commonly used with CONFigure. See the section titledsubsystem to control the behavior of the trigger system •To transfer readings from memory to the output buffer, use the FETCh? command •*RST Condition: *RST places the multimeter in the idle state Example Placing Multimeter in Wait-For-TriggerState 100 Conditions:Example Query the Input Impedance Mode 110 Example Making DC Voltage Ratio Measurements111 complete signal to the VXIbus TTL trigger linesvoltmeter complete The multimeter generates the The VXIbus trigger lines are More than one TTL output trigger line can be enabled at one time *RST Condition: OUTP:TTLTn OFF 112 Example Route Voltmeter Complete to Trigger Linevoltmeter complete Example Query Voltmeter Complete Destination 113 The READ? command is most commonly used with CONFigure to:Place the multimeter in the Comments Each reading sent to the output buffer is terminated with a Line Feed Example Transfer Readings Directly to Output Buffer 114 number•*RST Condition: SAMP:COUN Example Set the Sample Count 115 Example Query the Sample Count116 --Function, Range and Resolution--Aperture Time and Number of Power Line Cycles --Bandwidth --Autozero 116 Multimeter Command Reference 118 functionChange Measurement Function Example Query the Measurement Function 119 Example Query the AC Current Measurement Range120 enables or disables the autorangefunction for AC current measurements When autoranging is If you explicitly select a range using Example Disable AC Current Autoranging Example Query the AC Current Autorange Mode 121 selects the resolution for ACcurrent measurements. See Table 3-5on page resolution|MIN|MAX •Specify resolution in the same units as the measurement function •If autoranging is required, set the resolution using the MIN or MAX parameter returns one of the following numbers to the output buffer: The maximum current resolution available if MAX is specified 122 1.66667 seconds (60Hz) or 2 seconds (50Hz)seconds (60Hz) or (50Hz) Example Set an Aperture Time of 16.7ms returns one of the following numbers to the output buffer The present aperture time in seconds if MIN or MAX is not specified The minimum aperture time available (.333 ms) if MIN is specified The maximum aperture time available (1.67 s @ 60Hz; 2 s @ 50Hz) if Example Query the Aperture Time 123 •The CURR:DC:NPLC command overrides the results of previously executed•*RST Condition: 10 PLC 10 PLC Example Set the DC Current Integration Time in PLCs •The present integration time in PLCs if MINimum or MAXimum is not specified •The minimum integration time available (0.02) if MIN is specified •The maximum integration time available (100) if MAX is specified Example Query the DC Current Integration Time 124 •You must select a range using CURRent:DC:RANGe before specifying resolutionExample Set the DC Current Range to 3A The minimum current range available (10mA) if MIN is specified Example Query the DC Current Measurement Range 125 function for DC current measurementsExample Disable DC Current Autoranging Example Query the DC Current Autorange Mode 126 selects the resolution for DC current measurementsChanging the resolution also changes the The present current resolution selected if •The minimum current resolution available (1μA) if MIN is specified •The maximum current resolution available (100μA) if MAX is specified 127 ConditionExample Set the ac Signal Filter for Fast Measurements From 200Hz to 300kHz 128 Example Query the Detector Bandwidth<time •MIN = 0.01, MAX •*RST Condition: 0.1 seconds 0.1 seconds Example Set a Frequency Aperture Time of 1 Second queries the aperture time for frequency measurements. The parameter returns the minimum aperture value ); the parameter returns the maximum aperture value 129 selects the voltage range for thesignal level of frequency measurements •The FREQ:VOLT:RANG command overrides the range setting from a previous y command Example Set the Voltage Range for Frequency Measurements to returns one of the following numbers to the output buffer: 0.1, 1, 10, 100 or •The present voltage range selected if MIN or MAX is not specified •The minimum voltage range available (100mV) if MIN is specified •The maximum voltage range available (300V) if MAX is specified Example Query the Measurement Range 130 enables or disables theautorange function for the signal level of frequency measurements Example Disable Autoranging returns a number to show whether the autorange mode is enabled or disabled: “ . The number is sent to the output buffer Example Query the Autorange Mode 131 Comments • MIN sets the aperture time to 0.333ms. MAX sets the aperture time toThe minimum aperture time available (.333ms) if MIN is specified The maximum aperture time available (1.67s @ 60Hz; 2s @ 50Hz) if 132 [SENSe:]FRESistance:NPLCycles•The FRES:NPLC command overrides the results of previously executed commands (the last command executed has priority) Example Set the Integration Time in PLCs [SENSe:]FRESistance:NPLC? [MIN|MAX] Example Query the Integration Time 132 Multimeter Command Reference 133 •You must select a range using FRESistance:RANGe before specifying resolution•*RST Condition: FRES:RANG 1kΩ (1E+03) (1E+03) Example Set Four-WireResistance Range to 10MΩ •The present resistance range selected if MIN or MAX is not specified •The minimum resistance range available (100Ω) if MIN is specified •The maximum resistance range available (100MΩ) if MAX is specified 134 function for 4-wireresistance measurementsExample Put 4-wireResistance Measurements in the Autorange Mode 135 selects the resolution for4-wire resistance measurements •*RST Condition: FRES:RES 1mΩ (1E-03) (1E-03) The present resolution selected if Example Query the Resolution 136 time1 second •*RST Condition: 0.1 (100ms) 0.1 (100ms) Example Set the Aperture Time The minimum aperture time available (10 ms) if MIN is specified The maximum aperture time available (100 ms) if MAX is specified 137 [SENSe:]PERiod:VOLTage:RANGe <range> selects the voltage range for thesignal level of period measurements Example Set the Voltage Range for Period Measurements to 0.1, 1, 10, 100 or 300 corresponding to the range set MIN returns MAX returns Example Query the Period Voltage Range 139 •The RES:APER command overrides the results of previously executed140 [SENSe:]RESistance:NPLCycles•The RES:NPLC command overrides the results of a previously executed command (the last command executed has priority) [SENSe:]RESistance:NPLC? [MIN|MAX] The minimum integration time available (0.02) if MIN is specified The maximum integration time available (100) if MAX is specified 140 Multimeter Command Reference 141 •*RST Condition: RES:RANG 1kΩExample Change the Range •The present resistance range selected if MIN or MAX is not specified. Only the 142 function for resistance measurements143 •*RST Condition: Based on the *RST values for the RESistance:NPLC commandExample Change the Resolution 144 •You must select a range using VOLTage:AC:RANGe before specifying resolution•Specifying a fixed range disables the autorange mode setting The minimum voltage range available with the The maximum voltage range available with the 145 [SENSe:]VOLTage:AC:RANGe:AUTO <mode> enables or disables the autorangefunction for AC voltage measurements In order to specify an aperture time of s, you must select a fixed range (e.g Example Disable AC Voltage Autoranging [SENSe:]VOLTage:AC:RANGe:AUTO 146 selects the resolution for AC voltage measurements. See Tableon page to avoid a settings conflict error when specifying resolution •The VOLT:AC:RES command overrides the resolution setting from a previous *RST Condition: 1E-04 The present resolution selected if 147 The maximum aperture time available (1.67s @ 60Hz; 2 s @ 50Hz) if149 •You must select a range using VOLTage:DC:RANGe before specifying resolution•Specifying a fixed range disables the autorange mode by setting 150 [SENSe:]VOLTage[:DC]:RANGe:AUTO <mode> enables or disables the autorangefunction for DC voltage measurements [SENSe:]VOLTage[:DC]:RANGe:AUTO 150 Multimeter Command Reference 151 selects the resolution for DC voltage measurements•The VOLT:DC:RES command overrides the resolution setting from a previous •*RST Condition: Based on the *RST values for the VOLTage:NPLC command 152 •*RST Condition: ZERO:AUTO ON (enables autozero mode)Example Disable Autozero •“ 0” ( OFF or ONCE) if autozero is disabled or set for one time •“ 1” ON if autozero is enabled Example Query the Autozero Mode 153 The STATus subsystem reports the bit values of the Questionable Data/SignalEvent Register and to read the summary bits from the Status Byte Register event register and an enable register. The commands in the STATus:QUEStionable subsystem control and monitor these registers The STATus system contains seven registers, four of which are under IEEE control: the Standard Event Status Register (*ESR?), the Standard Event Enable Register (*ESE and *ESE?), the Status Byte Register (*STB?) and the Status Byte Enable Register (*SRE and *SRE?). The Operational Status bit (OPR), Request respectively) can be queried with the *STB? command. Use the *ESE? command to logically OR'd into the summary bit). Query using decimal weighted bit values 155 The SYSTem command subsystem returns error numbers and their associatedinstrument complies One error is removed from the error queue each time the When the error queue is empty, subsequent Example Reading the Error Queue SYSTem:VERSion? returns the SCPI version number this instrument complies 156 •*RST Condition: TRIG:COUNExample Set the Trigger Count 157 Example Query the Trigger Countseconds NOTE: This delay also occurs between each sample when Example Set the Trigger Delay 158 Example Query the Trigger DelayExample Disable Automatic Trigger Delay 159 TRIGger:DELay:AUTOExample Query the Trigger Delay Mode Disable automatic trigger delay TRIG:DEL:AUTO 160 source•Related Commands: INITiate, READ?, MEAS Example Set the Sample Source 161 Example Query the Trigger Source162 unmask162 Multimeter Command Reference 163 Executable when Initiated: YesCoupled Command: No Related Commands: STATus:PRESet *RST Condition: none Comments • Executable when Initiated: Yes •Coupled Command: No •Related Commands: *ESR?, *SRE, *STB •*RST Condition: unaffected Power-On Example Enable All Error Events 164 Power-OnCondition: register is clearedRelated Commands: *OPC?, *WAI 165 Related Commands: *OPC, *WAI*RST does not affect: 166 •Power-OnCondition: no bits are enabledExample Enable Service Request on Message Available Bit Related Commands: *SRE Comments • Executable when Initiated: No •*RST Condition: none Related Commands: *OPC, *OPC 167 The following tables summarize SCPI commands for the HP E1312A B-sizeandHP E1412A C-size 6½-DigitMultimeters Description 168 168 Multimeter Command Reference170 170 Multimeter Command Reference171 HP E1312A and HP E1412A Multimeter Specifications185 HP E1312A and HP E1412A Multimeter Error Messages186 -112 Program mnemonic too longstring contains more than the maximum 12 characters allowed in the -113 Undefined header -121 Invalid character in number -123 Numeric overflow -124 Too many digits -128 Numeric data not allowed -131 Invalid suffix -138 Suffix not allowed -148 Character data not allowed -151 Invalid string data (the ending quote is missing) -158 String data not allowed 186 HP E1312A and HP E1412A Multimeter Error Messages 187 -160to -168 Block data errorsThe multimeter does not accept block data -170to -178 Expression errors The multimeter does not accept mathematical expressions -211 Trigger ignored -213 Init ignored -214 Trigger deadlock -221 Settings conflict This error can be generated in one of the following situations: -222 Data out of range A numeric parameter value is outside the valid range for the command. Example: -223 Too much data commands -224 Illegal parameter value -230 Data stale 188 -330 Self-testfailed-350 Too many errors Query -440 Query UNTERMINATED after indefinite response 501Isolator UART framing error 502Isolator UART overrun error 511Unexpected reset occurred 521Input buffer overflow 522Output buffer overflow 531Insufficient memory 189 532Cannot achieve requested resolution540Cannot use overload as math reference HP E1312A and HP E1412A Service Manual 602RAM read/write failed 603A/D sync stuck 604A/D slope convergence failed 605Cannot calibrate rundown gain 606Rundown gain out of range 607Rundown too noisy 609DC gain x1 failed 610DC gain x10 failed 611DC gain x100 failed 612Ohms 500nA source failed 613Ohms 5µA source failed 614DC 300V zero failed 615Ohms 10µA source failed 616DC current sense failed 617Ohms 100µA source failed 618DC high voltage attenuator failed 619Ohms 1mA source failed 620AC rms zero failed 190 621AC rms full scale failed622Frequency counter failed 623Cannot calibrate precharge 625I/O processor does not respond 626I/O processor failed self-test Calibration Errors 701Cal security disabled by jumper 702Cal secured The multimeter is secured against calibration 703Invalid secure code must be 704Secure code too long A security code was received which contained more than 12 characters 705Cal aborted 706Cal value out of range 707Cal signal measurement out of range 708Cal signal frequency out of range 191 709No cal for this function or range710Full scale correction out of range 720Cal DCV offset out of range 721Cal DCI offset out of range 722Cal RES offset out of range 723Cal FRES offset out of range 724Extended resistance self cal failed 725500V DC correction out of range 730Precharge DAC convergence failed 731A/D turnover correction out of range 732AC flatness DAC convergence failed 733AC low frequency convergence failed 734AC low frequency correction out of range 735AC rms converter noise correction out of range 736AC rms 100th scale linearity correction out of range 740Cal checksum failed, secure state 741Cal checksum failed, string data 742Cal checksum failed, DCV corrections 743Cal checksum failed, DCI corrections 744Cal checksum failed, RES corrections 745Cal checksum failed, FRES corrections 746Cal checksum failed, AC corrections 747Cal checksum failed, HP-IBaddress 748Cal checksum failed, internal data 193 Measurement Speed and Accuracy Trade-offs194 Special Commands and Their Equivalent [SENSe:] Command194 Measurement Speed and Accuracy Trade-offs 198 Setting the ResolutionINIT;:FETCH The aperture time or NPLC is set as a result of specifying the resolution > parameter in the command, or by directly setting it with the command or function commands There is a major difference between ! Stores 200 readings in RAM ! Transfers readings to output buffer EXT READ READ ! Takes 200 readings and puts them in the output buffer 198 Measurement Speed and Accuracy Trade-offs 199 Numericsrange, 87, 119– 120 range/resolution, 87, 102 resolution 200 A(continued)201 C(continued)202 autozeroCurrent (continued) Current ac (continued) range/resolution, resolution, 121 specifications, 174– specifications true RMS measurements, 32– range/resolution, 88, 103 resolution resolution vs. integration time, 70 specifications, 171– leakage errors, 26 maximum, 15 measurement, connections Data Points, 97 DATA Subsystem DATA:POINts?, 97 dB Measurements, 42– 43 dBm Measurements, 43 DC Current DC Voltage aperture time, 147 blocking circuitry common mode rejection (CMR), 27 ground loops noise high speed measurements, 31 input impedance high speed DC Voltage (continued) measurements (continued) Declaration of Conformity, 11– 12 Delays settling time, 31 trigger defaults, 50, 159 querying, 51, 158– 159 setting, 49– 50, 157– automatic input impedance, 100 autorange 203 autozero, 83, 152, 197 math function204 F(continued)NPLC, 123, 132, 140 querying, 122– 123, 131– 132, 136, 139– 140, 147– setting, 122– 123, 131– 132, 136, 139– 140, 147– 205 configuration (continued)dBm, 43, 75 dc current error, 180– 206 See207 P(continued)Power Line cycles, 27, 38, 123, 132, 140 cycles noise, rejecting voltages Programming the Multimeter, 15, 22– Querying ac filter selection 4-wireohms function dB reference value, 75 dBm reference value, 75 error queue integration time, 122– 123, 131– 132, 136, 139– 140, 147– 4-wireresistance, ac current ac voltage measurements, 144 dc current dc voltage measurements, 149 frequency measurements, 129 period measurements readings stored in memory Querying (continued) resolution 4-wireresistance, 135 ac current ac voltage measurements, 146 dc current dc voltage measurements, 151 sample count, 51 SCPI version number, 155 trigger count, 49 delay time, 51, 158– 159 source, 47 upper limit voltmeter complete destination, 112 Questionable Data Register bits (QUE), 63 Quick Reference common (*) commands, 162, 167 SCPI commands, 167– Range 2-wireohms, 92, 107, 141 2-wireresistance 4-wireohms, 90, 105, 133– 134 4-wireresistance, 133– ac current, 87, 102 dc voltage, 94, 109, 149– 150 error Ranging 208 R(continued)errors 209 S(continued)4-wireohms, 90, 105, 133– 134 ac current, 87 210 delays, 49– 50, 157– 159 upper/lower limits, 44211 T(continued)dc, 25– 28 offset
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