National Instruments VirtualBench - Page 24

24 | ni.com | NI VirtualBench Calibration Procedure
3. Wait 2 minutes for the thermal EMF to stabilize.
4. Call
DMM Initialize Calibration with the following parameter:
• Password =
NI (default)
5. Call DMM Get Resistance Calibration Adjustment Points. This will return
two arrays:
• Range—A numerical array specifying the range being calibrated
• Adjustment Point—A numerical array specifying the resistance values required to
perform the adjustment
6. Output the adjustment point on the calibrator with 2-wire compensation turned on.
7. Call
DMM Setup Resistance Calibration with the following parameter:
• Range—Supplied from DMM Get Resistance Calibration Adjustment Points
8. Wait 5 seconds for settling.
9. Call
DMM Adjust Resistance Calibration with the following parameter:
• Adjustment Point—Resistance value returned by the calibrator
10. Repeat steps 6 through 9 for the first four adjustment points.
11. To adjust resistance >19 kΩ, output the adjustment point on the calibrator with 2-wire
compensation turned off.
12. Call
DMM Setup Resistance Calibration with the following parameter:
• Range—Supplied from DMM Get Resistance Calibration Adjustment Points
13. Wait 5 seconds for settling.
14. Call
DMM Adjust Resistance Calibration with the following parameter:
• Adjustment Point—Resistance value returned by the calibrator
15. Repeat steps 11 through 14 for the last eight adjustment points.
16. Call
DMM Close Calibration with the following parameter:
• Action Input =
Commit
17. Reset the calibrator for safety reasons.
18. Disconnect all cables from the calibrator and VirtualBench.
You have completed adjusting the resistance function of the VirtualBench.