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7

NI PXI-4070 Calibration Procedure

Software

The NI 4070 calibration procedure requires that NI-DMM version 2.1 or
later be installed on the calibration system. NI-DMM supports a number of
programming languages including LabVIEW, LabWindows

™

/CVI

™

,

Microsoft Visual C++, and Microsoft Visual Basic. When you install
NI-DMM, you only need to install support for the language you intend to
use to write your calibration utility.

Note

NI-DMM versions earlier than version 2.1 do not support NI 4070 calibration.

The procedures in this document are described using C function calls.
You also can program in LabVIEW using the VIs that correspond to the
C function calls. Figure 1 shows the procedural flow for verification.
Figure 2 shows the procedural flow for adjustment.

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Содержание NI PXI-4070

Страница 1: ...NI PXI 4070 6 digit FlexDMM and 1 8 MS s isolated digitizer NI 4070 Contents Conventions 2 Calibration Overview 3 What Is Calibration 3 Why Should You Calibrate 3 How Often Should You Calibrate 4 What Calibration Options Are Available 4 How Much Time Does Calibration Require 4 Equipment and Other Test Requirements 5 Required Test Equipment 5 Optional Test Equipment 5 Test Conditions 5 Documentatio...

Страница 2: ...e which alerts you to important information This icon denotes a caution which advises you of precautions to take to avoid injury data loss or a system crash bold Bold text denotes items that you must select or click in the software such as menu items and dialog box options Bold text also denotes parameter names italic Italic text denotes variables emphasis a cross reference hardware labels or an i...

Страница 3: ...tion can be used to determine the measurement error and can correct for it in the adjustment process The calibration process consists of verifying adjusting and reverifying a device During verification you compare the measured performance to an external standard of known measurement uncertainty to confirm that the product meets or exceeds specifications During adjustment you correct the measuremen...

Страница 4: ...C voltage modes for any measurements or the accuracy is irrelevant you have the option to skip these steps in the calibration procedure Complete calibration except current modes If you do not use the current modes neither DC nor AC or the accuracy is insignificant for your application you have the option to skip the steps to calibrate both current modes Complete calibration except AC voltage and c...

Страница 5: ...length not to exceed 4 in Wire 22 AWG 4 in for connecting the AUX CURRENT and SENSE HI binding posts of the calibrator alternatively you can use one of the Pomona B 4 cables instead of this wire National Instruments PXI chassis and controller National Instruments calibration cable assembly for the NI 4070 part number 161283A 01 Optional Test Equipment The following equipment is optional for calibr...

Страница 6: ...rnishes the copper spade lugs so that they appear dull rather than shiny Leave the spade lugs on the calibration cable assembly that are labeled SHD connected to the calibrator s V GUARD binding post at all times Prevent the cables from moving or vibrating by taping or strapping them to a nonvibrating surface Movement or vibration causes triboelectric effects that can result in measurement errors ...

Страница 7: ...l C and Microsoft Visual Basic When you install NI DMM you only need to install support for the language you intend to use to write your calibration utility Note NI DMM versions earlier than version 2 1 do not support NI 4070 calibration The procedures in this document are described using C function calls You also can program in LabVIEW using the VIs that correspond to the C function calls Figure ...

Страница 8: ...quency Mode Setting up the Test Equipment Go to Verifying DC Voltage Go to Verifying AC Voltage Go to Verifying 4 Wire Resistance Go to Verifying 2 Wire Resistance Go to Verifying DC Current Go to Verifying AC Current Go to Verifying Frequency Yes Yes Yes Yes Yes Yes Yes No No No No No No No Go to Adjustment Procedures Flowchart Completing the Adjustment Procedures Pre Adjustment Post Adjustment I...

Страница 9: ...owchart Yes Go to Verification Procedures Flowchart Verification Go to Adjusting DC Voltage and Resistance Go to Adjusting AC Voltage Modes No No Yes Yes No Completing the Adjustment Procedures Adjust AC Voltage Modes Adjust Current Modes Go to Adjusting Current Modes Perform Post Adjustment Verification ...

Страница 10: ...ple the scientific notation number 10e 6 must be entered as 0 00001 and the number 100e3 must be entered as 100000 If your programming language supports numeric entries in scientific notation NI recommends that you use this feature to minimize possible data entry errors Setting Up the Test Equipment Note The Setting Up the Test Equipment section is necessary for pre adjustment verifications only I...

Страница 11: ...for the thermal EMF to stabilize 3 Call niDMM_reset 4 Call niDMM_ConfigureMeasurement with the following parameters Function NIDMM_VAL_DC_VOLTS Range 1 Resolution 1e 6 5 Set the input resistance of the NI 4070 to 10 GΩ by calling niDMM_SetAttributeViReal64 with the following parameters Attribute_ID NIDMM_ATTR_INPUT_RESISTANCE Attribute_Value NIDMM_VAL_GREATER_THAN_10_GIGAOHM 6 Call niDMM_Read Veri...

Страница 12: ...asurement with the following parameters Function NIDMM_VAL_DC_VOLTS Range 100 Resolution 100e 6 15 Set the input resistance of the NI 4070 to 10 MΩ by calling niDMM_SetAttributeViReal64 with the following parameters Attribute_ID NIDMM_ATTR_INPUT_RESISTANCE Attribute_Value NIDMM_VAL_10_MEGAOHM 16 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 11 17 Call niDMM_...

Страница 13: ...ector block plugged into the NI 4070 and with the spade lugs connected to the appropriate calibrator binding posts Figure 3 shows the calibrator cable assembly Table 1 lists the assignments of the spade lugs to the corresponding calibrator binding posts Figure 3 NI Calibration Cable Assembly 1 SHD 2 HI 3 LO 4 2wr COMP 5 SHD 6 2wr COMP 7 HS 8 LS 9 SHD 1 HI LO S H D HS LS S H D 2 w r C O M P 2 w r C...

Страница 14: ...iDMM_ConfigureMultiPoint with the following parameters Trigger Count 1 Sample Count 10 Sample Trigger NIDMM_VAL_IMMEDIATE Sample Interval 1 28 Call niDMM_ReadMultiPoint with the following parameters Maximum Time NIDMM_VAL_TIME_LIMIT_AUTO Array Size 10 Average the results by summing the returned reading array of the function and dividing by the returned actual number of points Store the result as t...

Страница 15: ...revents a 50 Ω calibrator output resistance from creating a voltage divider with the internal resistance of the NI 4070 33 Call niDMM_ConfigureMeasurement with the following parameters Function NIDMM_VAL_DC_VOLTS Range 0 1 Resolution 100e 9 34 Set the input resistance of the NI 4070 to 10 GΩ by calling niDMM_SetAttributeViReal64 with the following parameters Attribute_ID NIDMM_ATTR_INPUT_RESISTANC...

Страница 16: ...CE Attribute_Value NIDMM_VAL_10_MEGAOHM 42 Call niDMM_Read Subtract the previously stored 100 mV 10 MΩ mode offset from this measurement and verify that the result falls between the limits listed in Table 11 43 Output 1 V on the calibrator 44 Call niDMM_ConfigureMeasurement with the following parameters Function NIDMM_VAL_DC_VOLTS Range 1 Resolution 1e 6 45 Set the input resistance of the NI 4070 ...

Страница 17: ...NIDMM_VAL_DC_VOLTS Range 10 Resolution 10e 6 56 Set the input resistance of the NI 4070 to 10 GΩ by calling niDMM_SetAttributeViReal64 with the following parameters Attribute_ID NIDMM_ATTR_INPUT_RESISTANCE Attribute_Value NIDMM_VAL_GREATER_THAN_10_GIGAOHM 57 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 11 58 Set the input resistance of the NI 4070 to 10 MΩ ...

Страница 18: ...meters Attribute_ID NIDMM_ATTR_INPUT_RESISTANCE Attribute_Value NIDMM_VAL_10_MEGAOHM 68 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 11 69 Output 100 V on the calibrator 70 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 11 71 Call niDMM_ConfigureMeasurement with the following parameters Function NIDMM_VAL_DC_VOLTS Rang...

Страница 19: ...rmed correctly to avoid shorting or electrical shock from high voltage on unconnected spade lugs 2 Connect the calibration cable assembly with the connector block plugged into the NI 4070 and with the spade lugs connected to the appropriate binding posts on the calibrator as described in Figure 3 and Table 1 3 Output 5 mV at 1 kHz on the calibrator 4 Call niDMM_reset to reset the NI 4070 to a know...

Страница 20: ...hat this measurement falls between the limits listed in Table 12 d Call niDMM_ConfigureMeasurement again changing Mode to NIDMM_VAL_AC_VOLTS_DCCOUPLED e Call niDMM_Read Verify that this measurement falls between the limits listed in Table 12 13 Repeat step 12 for each of the remaining iterations shown in Table 2 Table 2 niDMM_ConfigureMeasurement Parameters Iteration Calibrator Output niDMM_Config...

Страница 21: ..._AC_VOLTS and the remaining parameters as shown in Table 3 for the current iteration c Call niDMM_Read Verify that this measurement falls between the limits listed in Table 12 d Call niDMM_ConfigureMeasurement again changing Mode to NIDMM_VAL_AC_VOLTS_DCCOUPLED e Call niDMM_Read Verify that this measurement falls between the limits listed in Table 12 5 50 mV 50 kHz NIDMM_VAL_AC_VOLTS 0 05 50e 9 50...

Страница 22: ...IDMM_VAL_AC_VOLTS 0 5 500e 9 500 mV 50 Hz NIDMM_VAL_AC_VOLTS _DCCOUPLED 0 5 500e 9 2 500 mV 1 kHz NIDMM_VAL_AC_VOLTS 0 5 500e 9 500 mV 1 kHz NIDMM_VAL_AC_VOLTS _DCCOUPLED 0 5 500e 9 3 500 mV 1 kHz NIDMM_VAL_AC_VOLTS 5 5e 6 500 mV 1 kHz NIDMM_VAL_AC_VOLTS _DCCOUPLED 5 5e 6 4 500 mV 20 kHz NIDMM_VAL_AC_VOLTS 0 5 500e 9 500 mV 20 kHz NIDMM_VAL_AC_VOLTS _DCCOUPLED 0 5 500e 9 5 500 mV 50 kHz NIDMM_VAL_...

Страница 23: ...L_AC_VOLTS_DCCOUPLED e Call niDMM_Read Verify that this measurement falls between the limits listed in Table 12 Table 4 niDMM_ConfigureMeasurement Parameters Iteration Calibrator Output niDMM_ConfigureMeasurement Parameters Amplitude Frequency Function Range Resolution 1 5 V 50 Hz NIDMM_VAL_AC_VOLTS 5 5e 6 5 V 50 Hz NIDMM_VAL_AC_VOLTS _DCCOUPLED 5 5e 6 2 5 V 1 kHz NIDMM_VAL_AC_VOLTS 5 5e 6 5 V 1 k...

Страница 24: ...onfigureMeasurement with Mode set to NIDMM_VAL_AC_VOLTS and the remaining parameters as shown in Table 5 for the current iteration c Call niDMM_Read Verify that this measurement falls between the limits listed in Table 12 d Call niDMM_ConfigureMeasurement again changing Mode to NIDMM_VAL_AC_VOLTS_DCCOUPLED e Call niDMM_Read Verify that this measurement falls between the limits listed in Table 12 7...

Страница 25: ...ureMeasurement Parameters Iteration Calibrator Output niDMM_ConfigureMeasurement Parameters Amplitude Frequency Function Range Resolution 1 50 V 50 Hz NIDMM_VAL_AC_VOLTS 50 50e 6 50 V 50 Hz NIDMM_VAL_AC_VOLTS _DCCOUPLED 50 50e 6 2 50 V 1 kHz NIDMM_VAL_AC_VOLTS 50 50e 6 50 V 1 kHz NIDMM_VAL_AC_VOLTS _DCCOUPLED 50 50e 6 3 50 V 20 kHz NIDMM_VAL_AC_VOLTS 50 50e 6 50 V 20 kHz NIDMM_VAL_AC_VOLTS _DCCOUP...

Страница 26: ...igureMeasurement again changing Mode to NIDMM_VAL_AC_VOLTS_DCCOUPLED e Call niDMM_Read Verify that this measurement falls between the limits listed in Table 12 Table 6 niDMM_ConfigureMeasurement Parameters Iteration Calibrator Output niDMM_ConfigureMeasurement Parameters Amplitude Frequency Function Range V Resolution 1 219 V 50 Hz NIDMM_VAL_AC_VOLTS 300 300e 6 219 V 50 Hz NIDMM_VAL_AC_VOLTS _DCCO...

Страница 27: ...n unconnected spade lugs 2 Connect the calibration cable assembly with the connector block plugged into the NI 4070 and with the spade lugs connected to the appropriate binding posts on the calibrator as described in Figure 3 and Table 1 3 Wait two minutes for the thermal EMF to stabilize if the calibration cable assembly was not previously connected in this configuration 4 Call niDMM_reset 5 Refe...

Страница 28: ...instead of absolute limits because your calibrator will have different discrete resistance values 6 Repeat step 5 for each of the remaining iterations listed in Table 7 Table 7 niDMM_ConfigureMeasurement Parameters Iteration Calibrator Output niDMM_ConfigureMeasurement Parameters OffsetCompOhms Function Range Resolution 1 10 MΩ NIDMM_VAL_4_WIRE_RES 10e6 10 OFF 2 1 MΩ NIDMM_VAL_4_WIRE_RES 1e6 1 OFF...

Страница 29: ...ctly to avoid shorting on unconnected spade lugs 2 Connect the calibration cable assembly with the connector block plugged into the NI 4070 and with the spade lugs connected to the appropriate binding posts on the calibrator as described in Figure 3 and Table 1 3 Wait two minutes for the thermal EMF to stabilize if the calibration cable assembly was not used previously in this configuration 4 Outp...

Страница 30: ...unt 1 Sample Count 4 Sample Trigger NIDMM_VAL_IMMEDIATE Sample Interval 1 14 Call niDMM_ReadMultiPoint with the following parameters Maximum Time NIDMM_VAL_TIME_LIMIT_AUTO Array Size 4 Average the results by summing the returned reading array of the function and dividing by the returned actual number of points Store the result as the 100 kΩ range offset 15 Call niDMM_ConfigureMeasurement with the ...

Страница 31: ...M_ConfigureMultiPoint with the following parameters Trigger Count 1 Sample Count 4 Sample Trigger NIDMM_VAL_IMMEDIATE Sample Interval 1 20 Call niDMM_ReadMultiPoint with the following parameters Maximum Time NIDMM_VAL_TIME_LIMIT_AUTO Array Size 4 Average the results by summing the returned reading array of the function and dividing by the returned actual number of points Store the result as the 1 ...

Страница 32: ...alls between the tolerances listed in Table 14 27 Output 10 MΩ on the calibrator with no external sense or 2 wire compensation 28 Call niDMM_ConfigureMeasurement with the following parameters Function NIDMM_VAL_2_WIRE_RES Range 10e6 Resolution 10 29 Call niDMM_Read Subtract the previously stored 10 MΩ range offset from this measurement Verify that the result falls between the tolerances listed in ...

Страница 33: ... measurement Verify that the result falls between the tolerances listed in Table 14 39 Output 1 kΩ on the calibrator with 2 wire compensation turned on but with external sense turned off 40 Call niDMM_ConfigureMeasurement with the following parameters Function NIDMM_VAL_2_WIRE_RES Range 1e3 Resolution 1e 3 41 Call niDMM_Read Subtract the previously stored 1 kΩ range offset from this measurement Ve...

Страница 34: ...ly with the connector block plugged into the NI 4070 and with the spade lugs connected to the appropriate binding posts on the calibrator as described in Figure 3 and Table 1 3 Connect a banana to banana cable or a wire AWG 22 between the AUX CURRENT binding post and the SENSE HI binding post of the calibrator 4 Call niDMM_reset to reset the NI 4070 to a known state 5 Call niDMM_ConfigureMeasureme...

Страница 35: ...rrent output set to AUX 18 Call niDMM_ConfigureMeasurement with the following parameters Function NIDMM_VAL_DC_CURRENT Range 0 2 Resolution 200e 9 19 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 15 20 Output 200 mA on the calibrator with the current output set to AUX 21 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 15...

Страница 36: ...ibration cable assembly with the connector block plugged into the NI 4070 and with the spade lugs connected to the appropriate binding posts on the calibrator as described in Figure 3 and Table 1 3 Connect a banana to banana cable or a wire AWG 22 between the AUX CURRENT binding post and the SENSE HI binding post of the calibrator 4 Call niDMM_reset to reset the NI 4070 to a known state 5 Call niD...

Страница 37: ...Range 1 Resolution 1e 6 16 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 16 17 Output 1 A at 1 kHz on the calibrator with the current output set to AUX 18 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 16 You have completed verifying the AC current of the NI 4070 Select one of the following options If you want to contin...

Страница 38: ...ty is not important in steps 2 and 3 3 Connect the TB 2715 with the coaxial cable attached to the NI 6608 and plug the Pomona 4892 into the HI and LO terminals of the NI 4070 4 Call niDMM_reset to reset the NI 4070 to a known state 5 Call niDMM_ConfigureMeasurement with the following parameters Function NIDMM_VAL_FREQ Range 1 Resolution 0 6 Call niDMM_ConfigureFrequencyVoltageRange with Voltage Ra...

Страница 39: ...PROGRAM 12 Call niDMM_Read Verify that this measurement falls between the limits listed in Table 17 13 Call GPCTR_Control with the following parameters deviceNumber the device number of the NI 6608 assigned by MAX gpctrNum ND_COUNTER_0 action ND_RESET 14 Repeat steps 8 through 13 with the following modification in steps 9 and 10 change paramValue to 500 when you call the function GPCTR_Change_Para...

Страница 40: ...skip any of the steps within a section of the adjustment procedures NI DMM does not allow you to store your new calibration coefficients Instead NI DMM restores the original coefficients to the EEPROM Setting Up the Test Equipment If you have not already set up the test equipment complete the following steps 1 Remove all connections from the four input banana connectors on the NI 4070 2 Verify tha...

Страница 41: ...o output a calibration session Cal Session that you can use to perform NI DMM calibration or regular measurement functions Note You will use Cal Session in all subsequent function calls Note The default user password for adjusting the NI 4070 is NI 4 Call niDMM_ConfigurePowerLineFrequency with PowerLine Frequency set to 50 or 60 depending on the power line frequency in Hz that your instruments are...

Страница 42: ... EMF to stabilize 15 Call niDMM_CalAdjustOffset with the following parameters Mode NIDMM_VAL_DC_VOLTS Range 10 Input Resistance NIDMM_VAL_GREATER_THAN_10_GIGAOHM 16 Call niDMM_CalAdjustMisc with Type set to NIDMM_EXTCAL_MISCCAL_VREF 17 Call niDMM_CalAdjustOffset with the following parameters Mode NIDMM_VAL_DC_VOLTS Range 0 1 Input Resistance NIDMM_VAL_10_MEGAOHM 18 Remove the shorting bar and plug...

Страница 43: ...Caution Make sure that the insulation of these cables does not touch 28 On the NI 4070 plug a Pomona B 4 banana cable from the HI input to the HI_SENSE input and another banana cable from the LO input to the LO_SENSE input 29 Call niDMM_CalAdjustMisc with Type set to NIDMM_EXTCAL_MISCCAL_4WIRELEAKAGE 30 Remove the banana cables and plug the connector block of the calibration cable assembly back in...

Страница 44: ...y on the calibrator for 100 kΩ 39 Output 0 Ω on the calibrator with external sense turned on but without 2 wire compensation 40 Call niDMM_CalAdjustGain with the following parameters Mode NIDMM_VAL_4_WIRE_RES Range 100e3 Input Resistance NIDMM_VAL_RESISTANCE_NA Expected Value the display on the calibrator for 0 Ω 41 Output 10 kΩ on the calibrator with external sense turned on but without 2 wire co...

Страница 45: ...ut Resistance NIDMM_VAL_RESISTANCE_NA 51 Call niDMM_CalAdjustOffset with the following parameters Mode NIDMM_VAL_4_WIRE_RES Range 1e3 Input Resistance NIDMM_VAL_RESISTANCE_NA 52 Call niDMM_CalAdjustOffset with the following parameters Mode NIDMM_VAL_4_WIRE_RES Range 100 Input Resistance NIDMM_VAL_RESISTANCE_NA 53 Make the following changes to the connections between the calibrator and the calibrat...

Страница 46: ...ES Range 1e3 Input Resistance NIDMM_VAL_RESISTANCE_NA 61 Call niDMM_CalAdjustOffset with the following parameters Mode NIDMM_VAL_2_WIRE_RES Range 100 Input Resistance NIDMM_VAL_RESISTANCE_NA 62 Call niDMM_CalAdjustMisc with Type set to NIDMM_EXTCAL_MISCCAL_SECTION You have completed adjusting the DC voltage and resistance modes of the NI 4070 Select one of the following options If you want to perf...

Страница 47: ... and Table 1 3 Refer to Table 8 for the appropriate calibrator output and parameter values as you complete the following steps a On the calibrator output the value listed under Calibrator Output in Table 8 for the current iteration b Call niDMM_CalAdjustGain with Mode set to NIDMM_VAL_AC_VOLTS Set the remaining parameters as shown in Table 8 for the current iteration c Call niDMM_CalAdjustGain aga...

Страница 48: ...AL_ 1_MEGAOHM 5 4 50 V 1 kHz NIDMM_VAL_AC_VOLTS 50 NIDMM_VAL_ 1_MEGAOHM 50 50 V 1 kHz NIDMM_VAL_AC_VOLTS _DCCOUPLED 50 NIDMM_VAL_ 1_MEGAOHM 50 5 100 V 1 kHz NIDMM_VAL_AC_VOLTS 300 NIDMM_VAL_ 1_MEGAOHM 100 100 V 1 kHz NIDMM_VAL_AC_VOLTS _DCCOUPLED 300 NIDMM_VAL_ 1_MEGAOHM 100 Table 9 niDMM_CalAdjustOffset Parameters Iteration niDMM_CalAdjustOffset Parameters Mode Range V Input Resistance Ω 1 NIDMM_...

Страница 49: ...Repeat step 7 for each of the remaining iterations shown in Table 10 3 NIDMM_VAL_AC_VOLTS 5 NIDMM_VAL_1_MEGAOHM NIDMM_VAL_AC_VOLTS _DCCOUPLED 5 NIDMM_VAL_1_MEGAOHM 4 NIDMM_VAL_AC_VOLTS 50 NIDMM_VAL_1_MEGAOHM NIDMM_VAL_AC_VOLTS _DCCOUPLED 50 NIDMM_VAL_1_MEGAOHM 5 NIDMM_VAL_AC_VOLTS 300 NIDMM_VAL_1_MEGAOHM NIDMM_VAL_AC_VOLTS _DCCOUPLED 300 NIDMM_VAL_1_MEGAOHM Table 10 niDMM_CalAdjustACFilter Paramet...

Страница 50: ...50 mV 300 NIDMM_VAL_AC_VOLTS 0 05 300e3 50 mV 300 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 0 05 300e3 8 50 mV 500 NIDMM_VAL_AC_VOLTS 0 05 500e3 50 mV 500 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 0 05 500e3 9 500 mV 1 NIDMM_VAL_AC_VOLTS 0 5 1e3 500 mV 1 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 0 5 1e3 10 500 mV 5 NIDMM_VAL_AC_VOLTS 0 5 5e3 500 mV 5 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 0 5 5e3 11 500 mV 20 NIDMM_VAL_AC_VOLTS 0 5 20e3 500 ...

Страница 51: ...M_VAL_AC_VOLTS_ DCCOUPLED 0 5 300e3 16 500 mV 500 NIDMM_VAL_AC_VOLTS 0 5 500e3 500 mV 500 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 0 5 500e3 17 5 V 1 NIDMM_VAL_AC_VOLTS 5 1e3 5 V 1 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 5 1e3 18 5 V 5 NIDMM_VAL_AC_VOLTS 5 5e3 5 V 5 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 5 5e3 19 5 V 20 NIDMM_VAL_AC_VOLTS 5 20e3 5 V 20 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 5 20e3 20 5 V 50 NIDMM_VAL_AC_VOLTS 5 50e3 5 ...

Страница 52: ...25 50 V 1 NIDMM_VAL_AC_VOLTS 50 1e3 50 V 1 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 50 1e3 26 50 V 5 NIDMM_VAL_AC_VOLTS 50 5e3 50 V 5 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 50 5e3 27 50 V 20 NIDMM_VAL_AC_VOLTS 50 20e3 50 V 20 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 50 20e3 28 50 V 50 NIDMM_VAL_AC_VOLTS 50 50e3 50 V 50 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 50 50e3 29 50 V 100 NIDMM_VAL_AC_VOLTS 50 100e3 50 V 100 NIDMM_VAL_AC_VOLTS_ DCC...

Страница 53: ... 1e3 34 100 V 5 NIDMM_VAL_AC_VOLTS 300 5e3 100 V 5 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 300 5e3 35 100 V 20 NIDMM_VAL_AC_VOLTS 300 20e3 100 V 20 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 300 20e3 36 100 V 50 NIDMM_VAL_AC_VOLTS 300 50e3 100 V 50 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 300 50e3 37 100 V 100 NIDMM_VAL_AC_VOLTS 300 100e3 100 V 100 NIDMM_VAL_AC_VOLTS_ DCCOUPLED 300 100e3 38 100 V 200 NIDMM_VAL_AC_VOLTS 300 200e3 1...

Страница 54: ...nt Modes If you do not use the current modes DC and AC or the accuracy is insignificant for your application you can skip this section and select one of the following options If you skip this section and you want to verify the new calibration coefficients before saving them to the EEPROM repeat the Verification Procedures section except for Setting Up the Test Equipment If you skip this section an...

Страница 55: ...figureMeasurement with the following parameters Function NIDMM_VAL_DC_CURRENT Range 0 02 5 Call niDMM_Read to configure the NI 4070 for a current mode before applying current 6 Output 20 mA on the calibrator with the current output set to AUX 7 Call niDMM_CalAdjustGain with the following parameters Mode NIDMM_VAL_DC_CURRENT Range 0 02 Input Resistance NIDMM_VAL_RESISTANCE_NA Expected Value 0 02 8 ...

Страница 56: ...ameters Mode NIDMM_VAL_DC_CURRENT Range 0 2 Input Resistance NIDMM_VAL_RESISTANCE_NA Expected Value 0 2 17 Output 0 A on the calibrator with the current output set to AUX 18 Call niDMM_CalAdjustOffset with the following parameters Mode NIDMM_VAL_DC_CURRENT Range 0 2 Input Resistance NIDMM_VAL_RESISTANCE_NA 19 Call niDMM_CalAdjustOffset with the following parameters Mode NIDMM_VAL_AC_CURRENT Range ...

Страница 57: ...have completed adjusting the current modes of the NI 4070 Select one of the following options To verify that the NI 4070 is now operating within its specifications go to the Verification Procedures section and complete the appropriate procedures To finish the calibration and close the session go to the Completing the Adjustment Procedures section Completing the Adjustment Procedures To complete th...

Страница 58: ... mV 100 mV 10 GΩ 10 MΩ 0 099994 V 0 100006 V 0 099998 V 0 100002 V 100 mV 100 mV 10 GΩ 10 MΩ 0 100006 V 0 099994 V 0 100002 V 0 099998 V 1 V 1 V 10 GΩ 10 MΩ 0 999969 V 1 000031 V 0 999992 V 1 000008 V 1 V 1 V 10 GΩ 10 MΩ 1 000031 V 0 999969 V 1 000008 V 0 999992 V 10 V 10 V 10 GΩ 10 MΩ 9 99969 V 10 00031 V 9 99994 V 10 00006 V 10 V 10 V 10 GΩ 10 MΩ 10 00031 V 9 99969 V 10 00006 V 9 99994 V 100 V 1...

Страница 59: ...5 V 0 50125 V 500 mV 20 kHz 500 mV AC DC 0 49965 V 0 50035 V 500 mV 50 kHz 500 mV AC DC 0 49945 V 0 50055 V 500 mV 100 kHz 500 mV AC DC 0 4974 V 0 5026 V 500 mV 300 kHz 500 mV AC DC 0 48475 V 0 51525 V 5 V 30 Hz 5 V DC 4 9945 V 5 0055 V 5 V 50 Hz 5 V AC DC 4 9965 V 5 0035 V 5 V 1 kHz 5 V AC DC 4 9965 V 5 0035 V 5 V 1 kHz 50 V AC DC 4 9875 V 5 0125 V 5 V 1 kHz 300 V AC DC 4 9375 V 5 0625 V 5 V 20 k...

Страница 60: ... 219 1695 V 219 V 1 kHz 300 V AC DC 218 8305 V 219 1695 V 219 V 20 kHz 300 V AC DC 218 8305 V 219 1695 V 219 V 50 kHz 300 V AC DC 218 7429 V 219 2571 V 219 V 100 kHz 300 V AC DC 217 845 V 220 155 V 70 V 300 kHz 300 V AC DC 67 75 V 72 25 V Table 13 NI 4070 4 Wire Resistance Verification Tolerances Calibrator Resistance Range 2 Year Tolerance ppm of Range 24 Hour Tolerance ppm of Range 10 MΩ 10 MΩ 4...

Страница 61: ... ppm 2 ppm 0 Ω 100 Ω 10 ppm 10 ppm Table 14 NI 4070 2 Wire Resistance Verification Tolerances Calibrator Resistance Range 2 Year Tolerance ppm of Range 24 Hour Tolerance ppm of Range 100 MΩ 100 MΩ 2040 ppm 920 ppm 10 MΩ 10 MΩ 410 ppm 102 ppm 1 MΩ 1 MΩ 100 ppm 22 ppm 100 kΩ 100 kΩ 86 ppm 14 ppm 10 kΩ 10 kΩ 83 ppm 14 ppm 1 kΩ 1 kΩ 83 ppm 14 ppm 100 Ω 100 Ω 90 ppm 25 ppm Table 13 NI 4070 4 Wire Resis...

Страница 62: ...0 A 1 A 20 µA 20 µA 200 mA 200 mA 199 916 mA 200 084 mA 200 mA 200 mA 200 084 mA 199 916 mA 1 A 1 A 0 99948 A 1 00052 A 1 A 1 A 1 00052 A 0 99948 A Table 16 NI 4070 AC Current Verification Limits Calibrator Output Range 2 Year Limits Amplitude Frequency Lower Upper 1 mA 1 kHz 10 mA 0 9976 mA 1 0024 mA 10 mA 1 kHz 10 mA 9 994 mA 10 006 mA 10 mA 1 kHz 100 mA 9 976 mA 10 024 mA 100 mA 1 kHz 100 mA 99...

Страница 63: ...lude frequently asked questions knowledge bases product specific troubleshooting wizards manuals drivers software updates and more Web support is available through the Technical Support section of ni com A Declaration of Conformity DoC is our claim of compliance with the Council of the European Communities using the manufacturer s declaration of conformity This system affords the user protection f...

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