CALIBRATION PROCEDURE
NI 4070/4072 6½-Digit FlexDMM
This document contains step-by-step instructions for writing an external
calibration procedure for the National Instruments PXI/PCI-4070 and
NI PXI-4072 digital multimeters (DMMs). Each of these
National Instruments DMMs is a 6½-digit FlexDMM and 1.8 MS/s
isolated digitizer. For more information on calibration, visit
ni.com/
calibration
.
Contents
Conventions ............................................................................................ 2
Software Requirements ........................................................................... 2
Documentation Requirements................................................................. 3
Calibration Function Reference ....................................................... 3
Password ................................................................................................. 3
Calibration Interval ................................................................................. 3
Test Equipment ....................................................................................... 4
Test Conditions ....................................................................................... 5
Calibration Procedures ............................................................................ 6
Initial Setup...................................................................................... 6
Verification Procedures ................................................................... 7
Adjustment Procedures .................................................................... 39
DC Voltage ...................................................................................... 58
AC Voltage ...................................................................................... 59
4-Wire Resistance ............................................................................ 60
2-Wire Resistance ............................................................................ 61
DC Current....................................................................................... 61
AC Current....................................................................................... 62
Frequency......................................................................................... 62
Capacitance and Inductance............................................................. 63
Appendix A: Calibration Options ........................................................... 64
Where to Go for Support......................................................................... 68
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