22 | ni.com | NI VirtualBench Calibration Procedure
7. Call DMM Adjust DC Voltage Calibration with the following parameters:
• Range—Supplied from the output of DMM Get DC Voltage Calibration Adjustment
Points
• Adjustment Point—Supplied from the output of DMM Get DC Voltage Calibration
Adjustment Points
8. Repeat steps 6 through 7 for all adjustment points.
9. Call
DMM Close Calibration with the following parameter:
• Action Input =
Commit
10. Reset the calibrator for safety reasons.
11. Disconnect all cables from the calibrator and VirtualBench.
You have completed adjusting the DC voltage function of the VirtualBench.
Adjusting AC Voltage
To adjust the AC voltage function of the VirtualBench, complete the following steps:
1. Reset the calibrator.
2. Connect the red connectors on one end of the low EMF copper cable to the banana plug
connectors of the VirtualBench, and connect the connectors on the other end of the cable to
the appropriate calibrator binding posts. Figure 9 shows the correct connections.
Figure 9. Cable Connections for AC Voltage
3. Wait 2 minutes for the thermal EMF to stabilize.
Note Thermal EMF stabilization time is not needed if the cables have not been
connected/reconnected.
4.
Call DMM Initialize Calibration with the following parameter:
• Password = NI (default)
1 VirtualBench DMM 2 Multifunction Calibrator 3 Low EMF Copper Cable
HI
LO
HI
LO
HVI
SENSE
VΩ
OUTPUT
VΩA
AUX
CURRENT
GUARD GROUND
3
1 2
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