National Instruments PXI-4070 Manual
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National Instruments PXI-4070 Manual

Digit flexdmm calibration procedure
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NI PXI-4070 6½ Digit FlexDMM
Calibration Procedure
Contents
CVI™, FlexDMM™, LabVIEW™, National Instruments™, NI™, ni.com™, and NI-DMM™ are trademarks of
National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of
their respective companies. For patents covering National Instruments products, refer to the appropriate location:
Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents.
ni.com
© 2003 National Instruments Corp. All rights reserved.
This document contains step-by-step instructions for writing an external
calibration procedure for the NI PXI-4070 6½ digit FlexDMM and
1.8 MS/s isolated digitizer (NI 4070).
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
Documentation................................................................................. 6
Software ........................................................................................... 7
Verification Procedures........................................................................... 10
Setting Up the Test Equipment ........................................................ 10
Verifying DC Voltage...................................................................... 11
Verifying AC Voltage...................................................................... 19
Verifying 4-Wire Resistance ........................................................... 27
Verifying 2-Wire Resistance ........................................................... 29
Verifying DC Current ...................................................................... 34
Verifying AC Current ...................................................................... 36
Verifying Frequency ........................................................................ 38
Adjustment Procedures ........................................................................... 40
Setting Up the Test Equipment ........................................................ 40
Adjusting DC Voltage and Resistance............................................. 41
™
May 2003
370532B-01

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  • Page 1: Table Of Contents

    CVI™, FlexDMM™, LabVIEW™, National Instruments™, NI™, ni.com™, and NI-DMM™ are trademarks of May 2003 National Instruments Corporation. Product and company names mentioned herein are trademarks or trade names of 370532B-01 their respective companies. For patents covering National Instruments products, refer to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or ni.com/patents.

  • Page 2: Conventions

    This font is also used for the proper names of disk drives, paths, directories, programs, subprograms, subroutines, device names, functions, operations, variables, filenames and extensions, and code excerpts. NI PXI-4070 Calibration Procedure ni.com...

  • Page 3: Calibration Overview

    Frequency is the only mode that does not require adjustment. Reverifying all modes after adjustments ensures that the adjustment procedures were performed correctly. National Instruments can perform stringent in-house calibration of the NI 4070 and can generate either a basic or a detailed calibration certificate for you. Visit for more information on calibration ni.com/calibration...

  • Page 4: How Often Should You Calibrate

    50 minutes. If you choose to run the calibration in manual mode, the process requires more time and is more prone to operator error. NI recommends using an automated procedure, such as the procedures available with National Instruments Calibration Executive software. For more information on calibration, visit ni.com/calibration NI PXI-4070 Calibration Procedure ni.com...

  • Page 5: Equipment And Other Test Requirements

    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 calibrating the NI 4070 and is only used for frequency verification: •...

  • Page 6: Documentation

    NI-DMM Instrument Driver Quick Reference Guide • NI Digital Multimeters Getting Started Guide • Specifications for the NI PXI-4070 All of these documents are installed on your computer when you install NI-DMM. To locate them, select Start»Programs»National Instruments»NI-DMM»Documentation. If you are performing the optional frequency verification procedure, you may need the following documents, which are available at ni.com/...

  • Page 7: Software

    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. © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 8 AC Current AC Current Modes? Verify Go to Verifying Frequency Frequency Mode? Is this a Pre-Adjustment Post-Adjustment Go to Adjustment Completing the Pre-Adjustment or Procedures Adjustment Post-Adjustment Flowchart Procedures Verification? Figure 1. Verification Procedures Flowchart NI PXI-4070 Calibration Procedure ni.com...
  • Page 9 Modes? Go to Adjusting AC Voltage Modes Adjust Current Modes? Go to Adjusting Current Modes Perform Go to Post-Adjustment Verification Verification? Procedures Flowchart Completing the Adjustment Procedures Figure 2. Adjustment Procedures Flowchart © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 10: Verification Procedures

    Ensure that both the calibrator and the NI 4070 (installed in a powered-on PXI chassis) are warmed up for at least 30 minutes before you begin this procedure. Call with the resource name of the device to create a niDMM_init Session. NI PXI-4070 Calibration Procedure ni.com...

  • Page 11: Verifying Dc Voltage

    Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 11. Call with the following niDMM_ConfigureMeasurement parameters: • Function = NIDMM_VAL_DC_VOLTS • Range = • Resolution = 10e–6 © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 12 Attribute_ID = NIDMM_ATTR_INPUT_RESISTANCE • Attribute_Value = NIDMM_VAL_10_MEGAOHM 19. Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 11. 20. Remove the shorting bar from the NI 4070. 21. Reset the calibrator. NI PXI-4070 Calibration Procedure ni.com...
  • Page 13 Table 1 lists the assignments of the spade lugs to the corresponding calibrator binding posts. 1 SHD 4 2wr COMP+ 7 HS 2 HI 5 SHD 8 LS 3 LO 6 2wr COMP– 9 SHD Figure 3. NI Calibration Cable Assembly © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 14 Array Size = 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 mV >10 GΩ mode offset. NI PXI-4070 Calibration Procedure ni.com...
  • Page 15 Attribute_Value = NIDMM_VAL_10_MEGAOHM 37. Call . Subtract the previously stored 100 mV >10 MΩ niDMM_Read mode offset from this measurement and verify that the result falls between the limits listed in Table 11. © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 16 • Attribute_ID = NIDMM_ATTR_INPUT_RESISTANCE • Attribute_Value = NIDMM_VAL_10_MEGAOHM 48. Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 11. 49. Output –1 V on the calibrator. NI PXI-4070 Calibration Procedure ni.com...
  • Page 17 61. Set the input resistance of the NI 4070 to >10 GΩ by calling with the following parameters: niDMM_SetAttributeViReal64 • Attribute_ID = NIDMM_ATTR_INPUT_RESISTANCE • Attribute_Value = NIDMM_VAL_GREATER_THAN_10_GIGAOHM 62. Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 11. © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 18 Table 11. 75. Output –300 V on the calibrator. 76. Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 11. 77. Reset the calibrator for safety reasons. NI PXI-4070 Calibration Procedure ni.com...

  • Page 19: Verifying Ac Voltage

    • Range = 0.05 • Resolution = 50e–9 Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 12. Output 50 mV at 30 Hz on the calibrator. © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 20: Call Nidmm_Read

    50 mV 1 kHz NIDMM_VAL_AC_VOLTS 0.05 50e–9 _DCCOUPLED 50 mV 1 kHz NIDMM_VAL_AC_VOLTS 500e–9 50 mV 1 kHz NIDMM_VAL_AC_VOLTS 500e–9 _DCCOUPLED 50 mV 20 kHz NIDMM_VAL_AC_VOLTS 0.05 50e–9 50 mV 20 kHz NIDMM_VAL_AC_VOLTS 0.05 50e–9 _DCCOUPLED NI PXI-4070 Calibration Procedure ni.com...

  • Page 21: Call With The Following

    . Verify that this measurement falls between the niDMM_Read limits listed in Table 12. Call again, changing Mode to niDMM_ConfigureMeasurement NIDMM_VAL_AC_VOLTS_DCCOUPLED Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 12. © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 22 18. Output 5 V at 30 Hz on the calibrator. 19. Call with the following niDMM_ConfigureMeasurement parameters: • Function = NIDMM_VAL_AC_VOLTS_DCCOUPLED • Range = • Resolution = 5e–6 20. Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 12. NI PXI-4070 Calibration Procedure ni.com...
  • Page 23 1 kHz NIDMM_VAL_AC_VOLTS 50e–6 _DCCOUPLED 1 kHz NIDMM_VAL_AC_VOLTS 300e–6 1 kHz NIDMM_VAL_AC_VOLTS 300e–6 _DCCOUPLED 20 kHz NIDMM_VAL_AC_VOLTS 5e–6 20 kHz NIDMM_VAL_AC_VOLTS 5e–6 _DCCOUPLED 50 kHz NIDMM_VAL_AC_VOLTS 5e–6 50 kHz NIDMM_VAL_AC_VOLTS 5e–6 _DCCOUPLED © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 24: Call Nidmm_Read . Verify That This Measurement Falls Between The Limits Listed In Table

    . Verify that this measurement falls between the niDMM_Read limits listed in Table 12. Call again, changing Mode to niDMM_ConfigureMeasurement NIDMM_VAL_AC_VOLTS_DCCOUPLED Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 12. NI PXI-4070 Calibration Procedure ni.com...

  • Page 25: Nidmm_Val_Dc_Volts

    28. Output 219 V at 30 Hz on the calibrator. 29. Call with the following niDMM_ConfigureMeasurement parameters: • Function = NIDMM_VAL_AC_VOLTS_DCCOUPLED • Range = • Resolution = 300e–6 © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 26: Call Nidmm_Read

    NIDMM_VAL_AC_VOLTS 300e–6 219 V 20 kHz NIDMM_VAL_AC_VOLTS 300e–6 _DCCOUPLED 219 V 50 kHz NIDMM_VAL_AC_VOLTS 300e–6 219 V 50 kHz NIDMM_VAL_AC_VOLTS 300e–6 _DCCOUPLED 219 V 100 kHz NIDMM_VAL_AC_VOLTS 300e–6 219 V 100 kHz NIDMM_VAL_AC_VOLTS 300e–6 _DCCOUPLED NI PXI-4070 Calibration Procedure ni.com...

  • Page 27: Verifying 4-Wire Resistance

    On the calibrator, output the value listed in the Calibrator Output column in Table 7 for the current iteration. Make sure that the external sense is turned on, but 2-wire compensation is turned off. © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 28 NIDMM_VAL_4_WIRE_RES 10e3 0.01 1 kΩ NIDMM_VAL_4_WIRE_RES 1e–3 100 Ω NIDMM_VAL_4_WIRE_RES 100e–6 0 Ω NIDMM_VAL_4_WIRE_RES 10e6 0 Ω NIDMM_VAL_4_WIRE_RES 0 Ω NIDMM_VAL_4_WIRE_RES 100e3 0 Ω NIDMM_VAL_4_WIRE_RES 10e3 0.01 0 Ω NIDMM_VAL_4_WIRE_RES 1e–3 0 Ω NIDMM_VAL_4_WIRE_RES 100e–6 NI PXI-4070 Calibration Procedure ni.com...

  • Page 29: Verifying 2-Wire Resistance

    100 MΩ range offset. niDMM_Read Call with the following niDMM_ConfigureMeasurement parameters: • Function = NIDMM_VAL_2_WIRE_RES • Range = 10e6 • Resolution = Call and store the result as the 10 MΩ range offset. niDMM_Read © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 30 Function = NIDMM_VAL_2_WIRE_RES • Range = 10e3 • Resolution = 0.01 16. Call with the following parameters: niDMM_ConfigureMultiPoint • Trigger Count = • Sample Count = • Sample Trigger = NIDMM_VAL_IMMEDIATE • Sample Interval = –1 NI PXI-4070 Calibration Procedure ni.com...
  • Page 31 • Range = • Resolution = 100e–6 22. Call with the following parameters: niDMM_ConfigureMultiPoint • Trigger Count = • Sample Count = • Sample Trigger = NIDMM_VAL_IMMEDIATE • Sample Interval = –1 © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 32 . Subtract the previously stored 1 MΩ range offset niDMM_Read from this measurement. Verify that the result falls between the tolerances listed in Table 14. 33. Output 100 kΩ on the calibrator with no external sense or 2-wire compensation. NI PXI-4070 Calibration Procedure ni.com...
  • Page 33 Range = • Resolution = 100e–6 . Subtract the previously calculated 100 Ω range 44. Call niDMM_Read offset from this measurement. Verify that the result falls between the tolerances listed in Table 14. © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 34: Verifying Dc Current

    Output –20 mA on the calibrator with the current output set to 10. Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 15. 11. Output 0 A on the calibrator with the current output set to NI PXI-4070 Calibration Procedure ni.com...
  • Page 35 Table 15. 25. Output –1 A on the calibrator with the current output set to 26. Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 15. © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 36: Verifying Ac Current

    Table 16. Output 10 mA at 1 kHz on the calibrator with the current output set 10. Call . Verify that this measurement falls between the niDMM_Read limits listed in Table 16. NI PXI-4070 Calibration Procedure ni.com...
  • Page 37 Completing the Adjustment Procedures section. • If you do not want to verify any additional modes and you are performing a pre-adjustment verification, call to close niDMM_close the session. © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 38: Verifying Frequency

    • gpctrNum = ND_COUNTER_0 • action = ND_RESET Call with the following parameters: GPCTR_Set_Application • deviceNumber = the device number of the NI 6608 assigned by MAX • gpctrNum = ND_COUNTER_0 • application = ND_PULSE_TRAIN_GNR NI PXI-4070 Calibration Procedure ni.com...
  • Page 39 16. Call to close the verification session. niDMM_close You have completed verifying the frequency of the NI 4070. If you are performing a post-adjustment verification, go to the Completing the Adjustment Procedures section. © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 40: Adjustment Procedures

    Ensure that the calibrator is warmed up for at least 30 minutes before you begin this procedure. Reset the calibrator. If you have not already done so, allow the NI 4070 to warm up for 30 minutes within a powered-on PXI chassis. NI PXI-4070 Calibration Procedure ni.com...

  • Page 41: Adjusting Dc Voltage And Resistance

    Output –100 mV on the calibrator with the range locked to 2.2 V. Call with the following parameters: niDMM_CalAdjustGain • Mode = NIDMM_VAL_DC_VOLTS • Range = • Input Resistance = NIDMM_VAL_10_MEGAOHM • Expected Measurement = –0.1 Output 10 V on the calibrator. © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 42 • Range = 10e6 • Input Resistance = NIDMM_VAL_RESISTANCE_NA Ω • Expected Value = the display on the calibrator for 10 M 22. Output 0 Ω from the calibrator without external sense or 2-wire comp. NI PXI-4070 Calibration Procedure ni.com...
  • Page 43 100e6 • Input Resistance = NIDMM_VAL_RESISTANCE_NA Ω • Expected Value = the display on the calibrator for 100 M 34. Output 0 Ω from the calibrator without external sense or 2-wire compensation. © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 44 43. Output 0 Ω on the calibrator with external sense turned on, but without 2-wire compensation. 44. Call with the following parameters: niDMM_CalAdjustOffset • Mode = NIDMM_VAL_4_WIRE_RES • Range = 100e3 • Input Resistance = NIDMM_VAL_RESISTANCE_NA NI PXI-4070 Calibration Procedure ni.com...
  • Page 45 Reconnect the 2wr COMP– spade lug to the SENSE LO binding post of the calibrator. 54. Wait two minutes for the thermal EMF to stabilize. 55. Output 0 Ω on the calibrator with external sense and 2-wire compensation turned on. © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 46 Verification Procedures section to verify your new calibration coefficients before saving them to the EEPROM. • If you do not want to verify the adjustments you have just made, go to Completing the Adjustment Procedures section. NI PXI-4070 Calibration Procedure ni.com...

  • Page 47: Adjusting Ac Voltage (Ac- And Dc-Coupled) Modes

    1 kHz NIDMM_VAL_AC_VOLTS 0.05 NIDMM_VAL_ 0.05 1_MEGAOHM 50 mV 1 kHz NIDMM_VAL_AC_VOLTS 0.05 NIDMM_VAL_ 0.05 _DCCOUPLED 1_MEGAOHM 500 mV 1 kHz NIDMM_VAL_AC_VOLTS NIDMM_VAL_ 1_MEGAOHM 500 mV 1 kHz NIDMM_VAL_AC_VOLTS NIDMM_VAL_ _DCCOUPLED 1_MEGAOHM © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 48 Repeat step 5 for each of the remaining iterations shown in Table 9. Table 9. niDMM_CalAdjustOffset Parameters niDMM_CalAdjustOffset Parameters Iteration Mode Range (V) Input Resistance (Ω) NIDMM_VAL_AC_VOLTS 0.05 NIDMM_VAL_1_MEGAOHM NIDMM_VAL_AC_VOLTS 0.05 NIDMM_VAL_1_MEGAOHM _DCCOUPLED NIDMM_VAL_AC_VOLTS NIDMM_VAL_1_MEGAOHM NIDMM_VAL_AC_VOLTS NIDMM_VAL_1_MEGAOHM _DCCOUPLED NI PXI-4070 Calibration Procedure ni.com...
  • Page 49 Table 10. niDMM_CalAdjustACFilter Parameters Calibrator Output niDMM_CalAdjustACFilter Parameters Frequency Range Frequency Iteration Amplitude (kHz) Mode (Hz) 50 mV NIDMM_VAL_AC_VOLTS 0.05 50 mV NIDMM_VAL_AC_VOLTS_ 0.05 DCCOUPLED 50 mV NIDMM_VAL_AC_VOLTS 0.05 50 mV NIDMM_VAL_AC_VOLTS_ 0.05 DCCOUPLED © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 50 DCCOUPLED 50 mV NIDMM_VAL_AC_VOLTS 0.05 500e3 50 mV NIDMM_VAL_AC_VOLTS_ 0.05 500e3 DCCOUPLED 500 mV NIDMM_VAL_AC_VOLTS 500 mV NIDMM_VAL_AC_VOLTS_ DCCOUPLED 500 mV NIDMM_VAL_AC_VOLTS 500 mV NIDMM_VAL_AC_VOLTS_ DCCOUPLED 500 mV NIDMM_VAL_AC_VOLTS 20e3 500 mV NIDMM_VAL_AC_VOLTS_ 20e3 DCCOUPLED NI PXI-4070 Calibration Procedure ni.com...
  • Page 51 NIDMM_VAL_AC_VOLTS 300e3 500 mV NIDMM_VAL_AC_VOLTS_ 300e3 DCCOUPLED 500 mV NIDMM_VAL_AC_VOLTS 500e3 500 mV NIDMM_VAL_AC_VOLTS_ 500e3 DCCOUPLED NIDMM_VAL_AC_VOLTS NIDMM_VAL_AC_VOLTS_ DCCOUPLED NIDMM_VAL_AC_VOLTS NIDMM_VAL_AC_VOLTS_ DCCOUPLED NIDMM_VAL_AC_VOLTS 20e3 NIDMM_VAL_AC_VOLTS_ 20e3 DCCOUPLED NIDMM_VAL_AC_VOLTS 50e3 NIDMM_VAL_AC_VOLTS_ 50e3 DCCOUPLED © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 52 DCCOUPLED 50 V NIDMM_VAL_AC_VOLTS 50 V NIDMM_VAL_AC_VOLTS_ DCCOUPLED 50 V NIDMM_VAL_AC_VOLTS 20e3 50 V NIDMM_VAL_AC_VOLTS_ 20e3 DCCOUPLED 50 V NIDMM_VAL_AC_VOLTS 50e3 50 V NIDMM_VAL_AC_VOLTS_ 50e3 DCCOUPLED 50 V NIDMM_VAL_AC_VOLTS 100e3 50 V NIDMM_VAL_AC_VOLTS_ 100e3 DCCOUPLED NI PXI-4070 Calibration Procedure ni.com...
  • Page 53 100 V NIDMM_VAL_AC_VOLTS_ 20e3 DCCOUPLED 100 V NIDMM_VAL_AC_VOLTS 50e3 100 V NIDMM_VAL_AC_VOLTS_ 50e3 DCCOUPLED 100 V NIDMM_VAL_AC_VOLTS 100e3 100 V NIDMM_VAL_AC_VOLTS_ 100e3 DCCOUPLED 100 V NIDMM_VAL_AC_VOLTS 200e3 100 V NIDMM_VAL_AC_VOLTS_ 200e3 DCCOUPLED © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 54: Adjusting Current Modes

    Verification Procedures section (except for Setting Up the Test Equipment). • If you skip this section and you do not want to verify the new calibration coefficients, go to the Completing the Adjustment Procedures section. NI PXI-4070 Calibration Procedure ni.com...
  • Page 55 10. Output 0 A on the calibrator with the current output set to 11. Call with the following parameters: niDMM_CalAdjustOffset • Mode = NIDMM_VAL_DC_CURRENT • Range = 0.02 • Input Resistance = NIDMM_VAL_RESISTANCE_NA © National Instruments Corporation NI PXI-4070 Calibration Procedure...
  • Page 56 21. Call with the following parameters: niDMM_CalAdjustGain • Mode = NIDMM_VAL_DC_CURRENT • Range = • Input Resistance = NIDMM_VAL_RESISTANCE_NA • Expected Value = 22. Output –1 A on the calibrator with the current output set to NI PXI-4070 Calibration Procedure ni.com...

  • Page 57: Completing The Adjustment Procedures

    EEPROM. Otherwise, • Action = if the results of the NIDMM_EXTCAL_ACTION_ABORT calibration were unsatisfactory and you want to restore the original calibration coefficients to the EEPROM. © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 58: Verification Limits

    Table 12. NI 4070 AC Voltage Verification Limits Calibrator Output 2-Year Limits Amplitude Frequency Range Coupling Lower Upper 5 mV 1 kHz 50 mV AC/DC 0.0049775 V 0.0050225 V 50 mV 30 Hz 50 mV 0.04993 V 0.05007 V NI PXI-4070 Calibration Procedure ni.com...
  • Page 59 4.974 V 5.026 V 300 kHz AC/DC 4.8475 V 5.1525 V 50 V 30 Hz 50 V 49.945 V 50.055 V 50 V 50 Hz 50 V AC/DC 49.965 V 50.035 V © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 60: 4-Wire Resistance

    ±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 0 Ω 10 MΩ ±10 ppm ±2 ppm NI PXI-4070 Calibration Procedure ni.com...

  • Page 61: 2-Wire Resistance

    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 © National Instruments Corporation NI PXI-4070 Calibration Procedure...

  • Page 62: Dc Current

    10.006 mA 10 mA 1 kHz 100 mA 9.976 mA 10.024 mA 100 mA 1 kHz 100 mA 99.94 mA 100.06 mA 100 mA 1 kHz 99.7 mA 100.3 mA 1 kHz 0.9988 A 1.0012 A NI PXI-4070 Calibration Procedure ni.com...

  • Page 63: Frequency

    Programs»National Instruments»NI-DMM»Documentation. Technical Support Resources NI Web Support National Instruments Web support is your first stop for help in solving installation, configuration, and application problems and questions. Online problem-solving and diagnostic resources include frequently asked questions, knowledge bases, product-specific troubleshooting wizards, manuals, drivers, software updates, and more.

  • Page 64: Worldwide Support

    Worldwide Support National Instruments has offices located around the world to help address your support needs. You can access our branch office Web sites from the Worldwide Offices section of . Branch office Web sites provide ni.com up-to-date contact information, support phone numbers, email addresses, and current events.

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