National Instruments VirtualBench - Verifying the FGEN Gain

50 | ni.com | NI VirtualBench Calibration Procedure
2. Call FGEN Initialize.
3. Call
FGEN Configure Standard Waveform with the following parameters:
• Waveform Function =
DC
• DC Offset = 0
4. Call FGEN Enable Filter with the following parameter:
• Enable Filter =
TRUE
5. Call FGEN Run to enable the output.
6. Wait at least 100 milliseconds for settling.
7. Perform a measurement with the DMM in the 100 mV range. Compare to the limits listed
in Table 17.
8. Call FGEN Enable Filter with the following parameter:
• Enable Filter =
FALSE
9. Wait at least 100 milliseconds for settling.
10. Perform a measurement with the DMM in the 100 mV range. Compare to the limits listed
in Table 17.
11. Call
FGEN Close.
Verifying the FGEN Gain
Complete the following steps to verify the VirtualBench FGEN gain.
1. Connect the voltage input HI and LO terminals of the DMM to the FGEN BNC using a
banana plug-to-BNC cable—observing the polarity of the banana plugs—as shown in
Figure 27.
2. Call
FGEN Initialize.
3. Call
FGEN Configure Standard Waveform with the following parameters:
• Waveform Function =
DC
• DC Offset = 12
4. Call FGEN Enable Filter with the following parameter:
• Enable Filter =
TRUE
Table 17.
FGEN Offset Calibration Limits
Verification
Point (V)
FGEN
Enable Filter
Setting
1 Year Limits (V) 24 Hour Limits (V)
Lower Upper Lower Upper
0 TRUE (On) -0.008 0.008 -0.003 0.003
0 FALSE (Off) -0.008 0.008 -0.003 0.003