National Instruments 4065 Calibration Procedure
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National Instruments 4065 Calibration Procedure

National Instruments 4065 Calibration Procedure

6 1/2-digit digital multimeter
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CALIBRATION PROCEDURE
NI 4065 6½-Digit Digital Multimeter
Contents
This document contains instructions for writing an external calibration
procedure for the National Instruments PXI/PCI/PCIe/USB-4065 6½-digit
digital multimeter (DMM). For more information on calibration, visit
ni.com/calibration
Conventions ............................................................................................ 2
Software Requirements ........................................................................... 2
Documentation Requirements................................................................. 3
Calibration Function Reference ....................................................... 3
Password ................................................................................................. 3
Calibration Interval ................................................................................. 3
Test Equipment ....................................................................................... 4
Test Conditions ....................................................................................... 4
Calibration Procedures ............................................................................ 5
Initial Setup...................................................................................... 6
Verification Procedures ................................................................... 7
Adjustment Procedures .................................................................... 53
Adjusting Linearization ................................................................... 55
Adjusting DC Voltage ..................................................................... 57
Adjusting 4-Wire Resistance ........................................................... 61
Adjusting 2-Wire Resistance ........................................................... 64
Adjusting AC Voltage ..................................................................... 75
Adjusting DC Current ...................................................................... 77
Adjusting AC Current ...................................................................... 82
Completing the Adjustment Procedures .......................................... 84
Verification Limits .................................................................................. 84
DC Voltage ...................................................................................... 85
AC Voltage ...................................................................................... 85
4-Wire Resistance ............................................................................ 87
2-Wire Resistance ............................................................................ 87
DC Current....................................................................................... 88
AC Current....................................................................................... 89
Appendix A: Calibration Options ........................................................... 90
Where to Go for Support......................................................................... 93
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  • Page 1: Table Of Contents

    CALIBRATION PROCEDURE NI 4065 6½-Digit Digital Multimeter This document contains instructions for writing an external calibration procedure for the National Instruments PXI/PCI/PCIe/USB-4065 6½-digit digital multimeter (DMM). For more information on calibration, visit ni.com/calibration Contents Conventions .................... 2 Software Requirements ................2 Documentation Requirements..............

  • Page 2: Conventions

    LabVIEW VIs and C function calls. Note NI-DMM version 2.7.1 or later supports NI PXI/PCI/PCIe-4065 calibration. NI-DMM version 2.8 or later supports NI USB-4065 calibration. You can download the latest version of NI-DMM from ni.com/drivers NI 4065 Calibration Procedure...

  • Page 3: Documentation Requirements

    Calibration Interval The accuracy requirements of your measurement application determine how often you should calibrate the NI 4065. NI recommends performing a complete calibration at least once a year. NI does not guarantee the absolute accuracy of the NI 4065 beyond this one-year calibration interval. You can shorten the calibration interval based on the demands of your application.

  • Page 4: Test Equipment

    Test Equipment Table 1 lists the equipment required for calibrating the NI 4065. If you do not have the recommended instruments, use these specifications to select a substitute calibration standard. Table 1. Required Test Equipment Required Equipment Recommended Models Multifunction calibrator...

  • Page 5: Calibration Procedures

    • Power on and warm up the NI PXI/PCI/PCIe-4065 for at least 30 minutes and the NI USB-4065 for at least 50 minutes before beginning this calibration procedure. • Maintain an ambient temperature of 23 ±1 °C. • Maintain an ambient relative humidity of less than 60%.

  • Page 6: Initial Setup

    Warm up the calibrator for at least 60 minutes, the NI PXI/PCI/PCIe-4065 (installed Note in a powered-on chassis or PC) for at least 30 minutes, and the NI USB-4065 (plugged into a USB port on a powered-on PC) for at least 50 minutes before you begin this procedure.

  • Page 7: Verification Procedures

    For example, if Range = , the floating point value is . Refer to the NI Digital Multimeters Help for more information about parameter values. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 8 Verifying DC Voltage To verify DC voltage of the NI 4065, complete the following steps: Reset the calibrator. Connect the NI 4065 and the Fluke 5700A/5720A calibrator using the Fluke 5440 cable, as shown in Figure 1 for NI PXI/PCI/PCIe-4065 and Figure 2 for NI USB-4065.
  • Page 9 GROUND CURRENT 1 NI USB-4065 2 Fluke 5700A/5720A Calibrator 3 Fluke 5440 Cable Figure 2. NI USB-4065 Cable Connections for Voltage and 2-Wire Resistance Table 2. Fluke 5440 Cable Connections Banana Plug Connector Banana Plug Color Binding Post Label (NI 4065)
  • Page 10 Instrument_Handle: The instrument handle from niDMM_init Resolution_Digits: Measurement_Function: NIDMM_VAL_DC_VOLTS Range: Set a writable niDMM property node to set the input resistance of the NI 4065 to >10 G LabVIEW Block Diagram C/C++ Function Call Call niDMM SetAttributeVi with the Real64...
  • Page 11 Set a writable niDMM property node to set the aperture time and number of averages for the NI 4065. LabVIEW Block Diagram C/C++ Function Call Call niDMM SetAttributeViReal64 with the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_APERTURE_...
  • Page 12 Store the measurement as the 100 mV >10 G mode offset. 11. Set a writable niDMM property node to set the input resistance of the NI 4065 to 10 M. LabVIEW Block Diagram C/C++ Function Call Call niDMM SetAttributeViReal64 with the following...
  • Page 13 C/C++ Function Call Call niDMM with SetAttributeViReal64 the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_INPUT _RESISTANCE Attribute_Value: The Input Resistance value listed in Table 3 for the current iteration © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 14 Instrument_Handle: The instrument handle from niDMM_init Reading: Verify that this measurement falls between the limits listed in Table 20 Maximum_Time: – Verify that this measurement falls between the limits listed in Table 20. NI 4065 Calibration Procedure ni.com...
  • Page 15 VI, right-click the VI and choose Select Type followed by Resolution in Digits. LabVIEW Block Diagram C/C++ Function Call Call niDMM_ConfigureMeasurement with the following parameters: Digits Instrument_Handle: The instrument handle from niDMM_init Resolution_Digits: Measurement_Function: NIDMM_VAL_DC_VOLTS Range: © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 16 Attribute_ID: NIDMM_ATTR_INPUT_ RESISTANCE Attribute_Value: NIDMM_VAL_GREATER _THAN_10_GIGAOHM 18. Set a writable niDMM property node to set the aperture time and number of averages of the NI 4065. LabVIEW Block Diagram C/C++ Function Call Call niDMM SetAttributeViReal64 with the following parameters:...
  • Page 17 20. Output 100 mV on the calibrator with the range locked to 2.2 V. This range prevents a 50  calibrator output resistance from creating a voltage divider with the internal resistance of the NI 4065. Allow the calibrator output to settle before proceeding.
  • Page 18 22. Set a writable niDMM property node to set the input resistance of the NI 4065 to 10 M. LabVIEW Block Diagram C/C++ Function Call Call niDMM SetAttributeViReal64 with the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_INPUT...
  • Page 19 26. Output –100 mV on the calibrator with the range locked to 2.2 V. This range prevents a 50  calibrator output resistance from creating a voltage divider with the internal resistance of the NI 4065. Allow the calibrator output to settle before proceeding.
  • Page 20 28. Set a writable niDMM property node to set the input resistance of the NI 4065 to 10 M. LabVIEW Block Diagram C/C++ Function Call Call niDMM SetAttributeViReal64 with the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_INPUT...
  • Page 21 C/C++ Function Call Call niDMM with SetAttributeViReal64 the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_INPUT _RESISTANCE Attribute_Value: The Input Resistance value listed in Table 4 for the current iteration © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 22 Instrument_Handle: The instrument handle from niDMM_init Control Action: Commit On the calibrator, output the value listed in the Calibrator Output column in Table 4 for the current iteration. Allow the calibrator output to settle before proceeding. NI 4065 Calibration Procedure ni.com...
  • Page 23 Iteration Range (V Input Resistance Output (V NIDMM_VAL_GREATER_THAN_10_GIGAOHM NIDMM_VAL_10_MEGAOHM –1 NIDMM_VAL_GREATER_THAN_10_GIGAOHM –1 NIDMM_VAL_10_MEGAOHM NIDMM_VAL_GREATER_THAN_10_GIGAOHM NIDMM_VAL_10_MEGAOHM –10 NIDMM_VAL_GREATER_THAN_10_GIGAOHM –10 NIDMM_VAL_10_MEGAOHM NIDMM_VAL_10_MEGAOHM –100 NIDMM_VAL_10_MEGAOHM NIDMM_VAL_10_MEGAOHM –300 NIDMM_VAL_10_MEGAOHM 32. Reset the calibrator for safety reasons. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 24 You have completed verifying DC voltage for the NI 4065. Select one of the following options: • If you want to continue verifying other modes, go to the Verifying AC Voltage section. • If you do not want to verify any additional modes and you are performing a pre-adjustment verification, call the niDMM Close VI or function to close the session.
  • Page 25 Control Action: Commit On the calibrator, output the value listed in the Calibrator Output column in Table 5 for the current iteration. Allow the calibrator output to settle before proceeding. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 26 Table 21. Repeat step 3 for each of the remaining iterations shown in Table 5. Table 5. AC Voltage Linearity Settings Calibrator Output Iteration Range (V Amplitude (V Frequency (kHz) 0.004 0.02 0.04 Reset the calibrator. NI 4065 Calibration Procedure ni.com...
  • Page 27 C/C++ Function Call Call niDMM SetAttributeViReal64 with the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_APERTURE_ TIME Attribute_Value: 166.67 ms 200 ms 50 Hz PowerLine Frequency) Attribute_ID: NIDMM_ATTR_NUMBER_OF _AVERAGES Attribute_Value: © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 28 Repeat step 6 for each iteration shown in Table 6. Table 6. AC Voltage Flatness Settings Calibrator Output Iteration Range (V Amplitude (V Frequency 10 Hz 40 Hz 20 kHz 50 kHz 100 kHz 10 kHz 40 Hz NI 4065 Calibration Procedure ni.com...
  • Page 29 10 Hz 40 Hz 20 kHz 50 kHz 100 kHz You have completed verifying AC voltage for the NI 4065. Select one of the following options: • If you want to continue verifying other modes, go to the Verifying 4-Wire Resistance section.
  • Page 30 Verifying 4-Wire Resistance To verify the 4-wire resistance of the NI 4065, complete the following steps: Reset the calibrator. Connect the NI 4065 and the Fluke 5700A/5720A calibrator using the Fluke 5440 cables, as shown in Figure 3 for the NI PXI/PCI/PCIe-4065 and Figure 4 for the NI USB-4065.
  • Page 31 GUARD GROUND CURRENT 1 NI USB-4065 2 Fluke 5700A/5720A Calibrator 3 Fluke 5440 Cables Figure 4. NI USB-4065 Cable Connections for 4-Wire Resistance Table 7. Fluke 5440 Cable Connections Fluke 5440 Banana Plug Connector Banana Plug Color Binding Post Cable Identification...
  • Page 32 Resolution in Digits. LabVIEW Block Diagram C/C++ Function Call Call niDMM_ConfigureMeasurement with the following parameters: Digits Instrument_Handle: The instrument handle from niDMM_init Resolution_Digits: Measurement_Function: NIDMM_VAL_4_WIRE_RES Range: The Range listed in Table 8 for the current iteration NI 4065 Calibration Procedure ni.com...
  • Page 33 Wait for the specified time listed in the Delay column in Table 8 for the current iteration. This delay time is necessary to guarantee the calibrator signal has settled to within specifications. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 34 0  10  100  0  100  1 k 0  1 k 10 k 10 k 0  10 k 100 k 100 k 0.25 0  100 k 0.25 1 M NI 4065 Calibration Procedure ni.com...
  • Page 35 You have completed verifying 4-wire resistance for the NI 4065. Select one of the following options: • If you want to continue verifying other modes, go to the Verifying 2-Wire Resistance section. • If you do not want to verify any additional modes and you are performing a pre-adjustment verification, call the niDMM Close VI or function to close the session.
  • Page 36 Verifying 2-Wire Resistance To verify 2-wire resistance for the NI 4065, complete the following steps: Reset the calibrator. Connect the NI 4065 and the Fluke 5700A/5720A calibrator using two sets of Fluke 5440 cables, a double banana plug, and two insulated, low EMF spade lugs, as shown in Figure 5 for the NI PXI/PCI/PCIe-4065 and Figure 6 for the NI USB-4065.
  • Page 37 NI USB-4065 NI USB-4065 CAT II CAT II CAT II 6½-Digit DMM 6½-Digit DMM 6½-Digit DMM 1 NI USB-4065 2 Fluke 5440 Cables Figure 6. NI USB-4065 Cable Connections for 2-Wire Resistance © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 38 Resolution in Digits. LabVIEW Block Diagram C/C++ Function Call Call niDMM_ConfigureMeasurement with the following parameters: Digits Instrument_Handle: The instrument handle from niDMM_init Resolution_Digits: Measurement_Function: NIDMM_VAL_2_WIRE_RES Range: The Range as shown in Table 10 for the current iteration NI 4065 Calibration Procedure ni.com...
  • Page 39 Wait for the specified time listed in the Delay column in Table 10 for the current iteration. This delay time is necessary to guarantee the calibrator signal has settled to within specifications. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 40 Repeat step 4 for each of the remaining iterations shown in Table 10. Table 10. 2-Wire Resistance Settings Calibrator Output Resistance Delay 2-Wire External Iteration Range () ( (seconds) Compensation Sense 10 k 10 k NI 4065 Calibration Procedure ni.com...
  • Page 41 EMF spade lugs from the HI and LO banana plug connectors on the NI 4065. Plug in the insulated banana plug shorting bar across the HI and LO banana plug connectors on the NI 4065. Wait two minutes for the thermal EMF to stabilize. © National Instruments Corporation...
  • Page 42 LabVIEW Block Diagram C/C++ Function Call Call niDMM SetAttributeViReal64 with the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_APERTURE_ TIME Attribute_Value: 166.67 ms 200 ms 50 Hz PowerLine Frequency) Attribute_ID: NIDMM_ATTR_NUMBER_OF _AVERAGES Attribute_Value: NI 4065 Calibration Procedure ni.com...
  • Page 43 10. Repeat step 9 for each of the remaining iterations shown in Table 11. Table 11. 2-Wire Resistance Settings Iteration Range 100 M 10 M 1 M 100 k 10 k 1 k 100  © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 44 Reset the calibrator. Connect the NI 4065 and the Fluke 5700A/5720A calibrator using the Fluke 5440 cable, as shown in Figure 7 for the NI PXI/PCI/PCIe-4065 and Figure 8 for the NI USB-4065. Table 12 lists the cable connections. CAT II INPUT...
  • Page 45 OUTPUT HI (No connection) Blue V GUARD Wait two minutes for the thermal EMF to stabilize. Call the niDMM Reset VI to reset the NI 4065 to a known state. LabVIEW Block Diagram C/C++ Function Call Call with the following...
  • Page 46 Instrument_Handle: The instrument handle from niDMM_init Resolution_Digits: Measurement_Function: NIDMM_VAL_DC_CURRENT Range: 0.01 Call the niDMM Read VI to configure the NI 4065 for a current mode before applying current. LabVIEW Block Diagram C/C++ Function Call Call with the following niDMM_read parameter:...
  • Page 47 C/C++ Function Call Call niDMM SetAttributeViReal64 with the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_APERTURE_ TIME Attribute_Value: 166.67 ms 200 ms 50 Hz PowerLine Frequency) Attribute_ID: NIDMM_ATTR_NUMBER_OF _AVERAGES Attribute_Value: © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 48 Repeat step 8 for each of the remaining iterations shown in Table 13. Table 13. DC Current Settings Iteration Range (A) Calibrator Output (A) –10 m 0.01 0.01 10 m 0.01 –100 m 100 m –1.0 NI 4065 Calibration Procedure ni.com...
  • Page 49 Table 13. DC Current Settings (Continued) Iteration Range (A) Calibrator Output (A) –2.2 You have completed verifying DC current for the NI 4065. Select one of the following options: • If you want to continue verifying other modes, go to the Verifying AC Current section.
  • Page 50 Instrument_Handle: The instrument handle from niDMM_init Resolution_Digits: Measurement_Function: NIDMM_VAL_AC_CURRENT Range: 0.01 Call the niDMM Read VI to configure the NI 4065 for a current mode before applying current. LabVIEW Block Diagram C/C++ Function Call Call with the following niDMM_read parameters:...
  • Page 51 C/C++ Function Call Call niDMM SetAttributeViReal64 with the following parameters: Instrument_Handle: The instrument handle from niDMM_init Attribute_ID: NIDMM_ATTR_APERTURE_ TIME Attribute_Value: 166.67 ms 200 ms 50 Hz PowerLine Frequency) Attribute_ID: NIDMM_ATTR_NUMBER_OF _AVERAGES Attribute_Value: © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 52 Calibrator Output Iteration Range (A Amplitude (A) Frequency 200  1 kHz 0.01 1 kHz 0.01 10 m 1 kHz 0.01 1 kHz 10 m 1 kHz 100 m 1 kHz 10 m 1 kHz NI 4065 Calibration Procedure ni.com...

  • Page 53: Adjustment Procedures

    1 kHz 300 m 1 kHz 1 kHz You have completed verifying AC current for the NI 4065. Select one of the following options: • If you do not want to verify other modes and you are performing a post-adjustment verification, go to the...
  • Page 54 If you have not already done so, allow the NI PXI/PCI/PCIe-4065 to warm up for 30 minutes within a powered-on chassis or PC and the NI USB-4065 to warm up for 50 minutes after it is plugged into a USB port on a powered-on PC.

  • Page 55: Adjusting Linearization

    Call the niDMM Initialize External Cal VI with the Instrument Descriptor of the NI 4065 and your valid user password to output a calibration session ( ) you can use to perform NI-DMM Cal Session calibration or regular measurement functions.
  • Page 56 C/C++ Function Call Call niDMM_CalAdjustLinearization with the following parameters: Mode: NIDMM_VAL_DC_VOLTS Range: Set as shown in Table 15 for the current iteration Input_Resistance: NIDMM_VAL_GREATER_THAN_10 _GIGAOHM Expected_Value: Set as shown in Table 15 for the current iteration NI 4065 Calibration Procedure ni.com...

  • Page 57: Adjusting Dc Voltage

    – –0.4 – –0.2 – Reset the calibrator. Adjusting DC Voltage To adjust DC voltage for the NI 4065, complete the following steps: Call the niDMM Reset VI. LabVIEW Block Diagram C/C++ Function Call Call with the following niDMM_reset parameter:...
  • Page 58 Mode: NIDMM_VAL_DC_VOLTS Range: Set as shown in Table 16 for the current iteration Input_Resistance: Set as shown in Table 16 for the current iteration Expected_Value: Set as shown in Table 16 for the current iteration NI 4065 Calibration Procedure ni.com...
  • Page 59 Wait 2 seconds to allow maximum settling on the calibrator. Call the niDMM Cal Adjust Offset VI. LabVIEW Block Diagram C/C++ Function Call Call with niDMM_CalAdjustOffset the following parameters: Instrument_Handle: Mode: Cal Session NIDMM_VAL_DC_VOLTS Range: Input_Resistance: NIDMM_VAL_GREATER_THAN_10 _GIGAOHM © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 60 Cal Session Mode: NIDMM_VAL_DC_VOLTS Range: Input_Resistance: NIDMM_VAL_GREATER_THAN_10 _GIGAOHM 11. Call the niDMM Cal Adjust Offset VI. LabVIEW Block Diagram C/C++ Function Call Call with niDMM_CalAdjustOffset the following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_DC_VOLTS Range: Input_Resistance: NIDMM_VAL_10_MEGAOHM NI 4065 Calibration Procedure ni.com...

  • Page 61: Adjusting 4-Wire Resistance

    13. Reset the calibrator. Adjusting 4-Wire Resistance To adjust 4-wire resistance for the NI 4065, complete the following steps: Fasten the connectors on one end of the Fluke 5440 cable to the NI 4065 HI SENSE and LO SENSE banana plug connectors. Fasten the connectors on the other end of the cable to the HI SENSE and LO SENSE calibrator binding posts, respectively.
  • Page 62 Call with the niDMM_CalAdjustGain following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_4_WIRE_RES Range: Set as shown in Table 17 for the current iteration Input_Resistance: NIDMM_VAL_RESISTANCE_NA Expected_Value: Set as shown in Table 17 for the current iteration NI 4065 Calibration Procedure ni.com...
  • Page 63 0  100 k the display on the calibrator for 0  10 k the display on the calibrator for 0  the display on the calibrator for 0  Reset the calibrator. © National Instruments Corporation NI 4065 Calibration Procedure...

  • Page 64: Adjusting 2-Wire Resistance

    Adjusting 2-Wire Resistance To adjust 2-wire resistance for the NI 4065, complete the following steps: Connect the NI 4065 and the Fluke 5700A/5720A calibrator using two sets of Fluke 5440 cables, a double banana plug, and two insulated, low EMF spade lugs, as shown in Figure 5. Table 9 lists the cable connections.
  • Page 65 Expected_Value: The display on the calibrator for 19 M Output 10 M from the calibrator with 2-wire compensation turned off, but with external sense turned on. Allow the calibrator output to settle before proceeding. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 66 Expected_Value: The display on the calibrator for 1.9 M 13. Output 1 M from the calibrator with 2-wire compensation turned off, but with external sense turned on. Allow the calibrator output to settle before proceeding. NI 4065 Calibration Procedure ni.com...
  • Page 67 Cal Session Mode: NIDMM_VAL_2_WIRE_RES Range: 100 k Input_Resistance: NIDMM_VAL_RESISTANCE_NA Expected_Value: The display on the calibrator for 100 k 17. Output 10 k from the calibrator with 2-wire compensation and external sense turned on. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 68 10 k Input_Resistance: NIDMM_VAL_RESISTANCE_NA Expected_Value: The display on the calibrator for 10 k 22. Output 1 k from the calibrator with 2-wire compensation and external sense turned on. Allow the calibrator output to settle before proceeding. NI 4065 Calibration Procedure ni.com...
  • Page 69 Expected_Value: The display on the calibrator for 100  26. Output 0  from the calibrator with 2-wire compensation turned off, but with external sense turned on. Allow the calibrator output to settle before proceeding. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 70 29. Call the niDMM Cal Adjust Gain VI. LabVIEW Block Diagram C/C++ Function Call Call with the niDMM_CalAdjustGain following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_2_WIRE_RES Range: Input_Resistance: NIDMM_VAL_RESISTANCE_NA Expected_Value: The display on the calibrator for 0  NI 4065 Calibration Procedure ni.com...
  • Page 71 33. Call the niDMM Cal Adjust Gain VI. LabVIEW Block Diagram C/C++ Function Call Call with the niDMM_CalAdjustGain following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_2_WIRE_RES Range: Input_Resistance: NIDMM_VAL_RESISTANCE_NA Expected_Value: The display on the calibrator for 0  © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 72 35. Reset the calibrator. 36. Plug in the insulated banana plug shorting bar across the HI and LO banana plug connectors on the NI 4065. 37. Wait two minutes for the thermal EMF to stabilize. 38. Call the niDMM Cal Adjust Offset VI.
  • Page 73 Input_Resistance: NIDMM_VAL_RESISTANCE_NA 42. Call the niDMM Cal Adjust Offset VI. LabVIEW Block Diagram C/C++ Function Call Call with niDMM_CalAdjustOffset the following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_2_WIRE_RES Range: 10 k Input_Resistance: NIDMM_VAL_RESISTANCE_NA © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 74 Instrument_Handle: Cal Session Mode: NIDMM_VAL_2_WIRE_RES Range: Input_Resistance: NIDMM_VAL_RESISTANCE_NA 45. Call the niDMM Cal Adjust Miscellaneous VI. LabVIEW Block Diagram C/C++ Function Call Call with the niDMM_CalAdjustMisc following parameters: Instrument_Handle: Cal_Session Type: NIDMM_EXTCAL_MISCCAL_SECTION NI 4065 Calibration Procedure ni.com...

  • Page 75: Adjusting Ac Voltage

    Adjusting AC Voltage To adjust AC voltage for the NI 4065, complete the following steps: Call the niDMM Config Measurement VI. The niDMM Config Measurement VI is polymorphic. To change the selected instance of this polymorphic VI, right-click the VI and choose Select Type followed by Resolution in Digits.
  • Page 76 Repeat step 3 for each of the remaining iterations listed in Table 18. Table 18. AC Voltage Settings Calibrator Output niDMM Cal Adjust Gain Parameters Iteration Amplitude (V) f (kHz) Range (V) Expected Value 0.04 0.04 Reset the calibrator. NI 4065 Calibration Procedure ni.com...

  • Page 77: Adjusting Dc Current

    HI and LO calibrator binding posts, respectively. Figure 7 shows the correct connections. Table 12 lists the cable connections. If you are using an NI USB-4065, fasten the connectors on one end of the Fluke 5440 cable to the I and LO banana plug connectors, and fasten the connectors on the other end of the cable to the HI and LO calibrator binding posts, respectively.
  • Page 78 C/C++ Function Call Call with the niDMM_CalAdjustGain following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_DC_CURRENT Range: 0.01 Input_Resistance: NIDMM_VAL_RESISTANCE_NA Expected_Value: – 0.01 10. Output 0 A on the calibrator. Allow the calibrator output to settle before proceeding. NI 4065 Calibration Procedure ni.com...
  • Page 79 C/C++ Function Call Call with the niDMM_CalAdjustGain following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_DC_CURRENT Range: Input_Resistance: NIDMM_VAL_RESISTANCE_NA Expected_Value: –0.1 16. Output 0 A on the calibrator. Allow the calibrator output to settle before proceeding. © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 80 LabVIEW Block Diagram C/C++ Function Call Call with the niDMM_CalAdjustGain following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_DC_CURRENT Range: Input_Resistance: NIDMM_VAL_RESISTANCE_NA Expected_Value: –2.2 22. Output 1 A on the calibrator. Allow the calibrator output to settle before proceeding. NI 4065 Calibration Procedure ni.com...
  • Page 81 27. Wait 5 seconds before making a measurement to allow thermal EMF to settle. 28. Call the niDMM Cal Adjust Offset VI. LabVIEW Block Diagram C/C++ Function Call Call with niDMM_CalAdjustOffset the following parameters: Instrument_Handle: Cal Session Mode: NIDMM_VAL_DC_CURRENT Range: Input_Resistance: NIDMM_VAL_RESISTANCE_NA © National Instruments Corporation NI 4065 Calibration Procedure...

  • Page 82: Adjusting Ac Current

    NIDMM_VAL_RESISTANCE_NA 30. Reset the Calibrator. Adjusting AC Current To adjust AC current for the NI 4065, complete the following steps: Refer to Table 19 for the appropriate calibrator output and parameter values as you complete the following steps: Call the niDMM Config Measurement VI. The niDMM Config Measurement VI is polymorphic.
  • Page 83 Cal Adjust Gain Parameters Iteration Amplitude (A) f (kHz) Range (A) Expected Value (A) 0.06 0.06 0.25 0.25 0.01 0.01 0.05 0.05 0.01 0.01 0.01 0.01 200  0.01 200 m Reset the calibrator. © National Instruments Corporation NI 4065 Calibration Procedure...

  • Page 84: Completing The Adjustment Procedures

    Use the values in the 24-Hour Limits column for a post-adjustment verification only. Otherwise, use the values in the 1-Year Limits column. Limits in the following tables are based upon the August 2010 edition of the NI 4065 Specifications. Refer to the most recent NI 4065 Specifications online at ni.com/...

  • Page 85: Dc Voltage

    1 kHz 1.995 V 2.005 V 1.9952 V 2.0048 V 400 mV 1 kHz 389.2 mV 410.8 mV 391.2 mV 408.8 mV 1 kHz 1.986 V 2.014 V 1.988 V 2.012 V © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 86 200 V 20 kHz 199.45 V 200.55 V 199.48 V 200.52 V 200 V 50 kHz 199.25 V 200.75 V 199.28 V 200.72 V 200 V 100 kHz 196.76 V 203.24 V 196.76 V 203.24 V NI 4065 Calibration Procedure ni.com...

  • Page 87: 4-Wire Resistance

    Range () ppm of Reading ppm of Range ppm of Reading ppm of Range 10  2040 2030 100  100  1 k 1 k 10 k 10 k 10 k © National Instruments Corporation NI 4065 Calibration Procedure...

  • Page 88: Dc Current

    10 m 10 mA 10 m 9.993 mA 10.007 mA 9.9985 mA 10.0015 mA –100 mA 100 m –100.055 mA –99.945 mA –100.014 mA –99.986 mA –5 A 5 A –4 A 4 A 100 m NI 4065 Calibration Procedure ni.com...

  • Page 89: Ac Current

    58.02 mA 61.98 mA 58.32 mA 61.68 mA 300 mA 1 kHz 297.3 mA 302.7 mA 297.6 mA 302.4 mA 2.2 A 1 kHz 2.1916 A 2.2084 A 2.1919 A 2.2081 A © National Instruments Corporation NI 4065 Calibration Procedure...

  • Page 90: Appendix A: Calibration Options

    EEPROM. Figure 10 shows the procedural flow for adjustment. The calibration sequence is as follows: Verify the operation of the NI 4065 using the 1-year accuracy limits (or the 90-day accuracy limits if it has been calibrated within that time).
  • Page 91 Verify Go to Verifying 2-Wire Resistance 2-Wire Resistance Mode? Verify Go to Verifying DC Current DC Current Mode? Verify Go to Verifying AC Current AC Current Mode? Figure 9. Verification Procedures Flowchart © National Instruments Corporation NI 4065 Calibration Procedure...
  • Page 92 AC Voltage Modes? Go to Adjusting AC Voltage Modes Adjust Current Modes? Go to Adjusting Current Modes Perform Go to Post-Adjustment Verification Verification? Procedures Flowchart Go to Completing the Adjustment Procedures Figure 10. Adjustment Procedures Flowchart NI 4065 Calibration Procedure ni.com...

  • Page 93: Where To Go For Support

    CVI, LabVIEW, National Instruments, NI, ni.com, the National Instruments corporate logo, and the Eagle logo are trademarks of National Instruments Corporation. Refer to the Trademark Information at ni.com/trademarks for other National Instruments trademarks. The mark LabWindows is used under a license from Microsoft Corporation.

This manual is also suitable for:

Ni 4065Pxi 4065Pci 4065Pcie 4065

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