10
|
ni.com
|
NI VirtualBench Calibration Procedure
14. Repeat steps 10 through 13 for each verification point in the remaining ranges listed in
Table 4.
15. Reset the calibrator for safety reasons.
16. Disconnect all cables from the calibrator and VirtualBench.
You have completed verifying the DC voltage function of the VirtualBench.
Verifying AC Voltage
To verify the AC voltage function of the VirtualBench DMM, 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 2 shows the correct connections.
Figure 2.
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.
Generate 0.006 V
rms
verification point on the calibrator.
5.
Call
DMM Configure Measurement
with the following parameters:
•
Function
=
AC Volts
•
Auto Range
=
FALSE
•
Manual Range
=
0.1
1
VirtualBench DMM
2
Multifunction Calibrator
3
Low EMF Copper Cable
HI
LO
HI
LO
HVI
S
EN
S
E
V
Ω
OUTPUT
V
Ω
A
AUX
CURRENT
GUARD
GROUND
3
1
2
