©
National Instruments Corporation
19
NI PXI-4070 Calibration Procedure
You have completed verifying the DC voltage of the NI 4070. Select one of
the following options:
• If you want to continue verifying other modes, go to the
• If you do not want to verify other modes and you are performing a
post-adjustment verification, go to the
section.
•
If you do not want to verify any additional modes and you are
performing a pre-adjustment verification, call
niDMM_close
to close
the session.
Verifying AC Voltage
To verify AC voltage of the NI 4070, complete the following steps:
1.
Reset the calibrator.
Caution
Step 2 must be performed correctly to avoid shorting or electrical shock from
high voltage on unconnected spade lugs.
2.
Connect the calibration cable assembly with the connector block
plugged into the NI 4070 and with the spade lugs connected to the
appropriate binding posts on the calibrator, as described in Figure 3
and Table 1.
3.
Output 5 mV 1 kHz on the calibrator.
4.
Call
niDMM_reset
to reset the NI 4070 to a known state.
5.
Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_AC_VOLTS
•
Range
=
0.05
•
Resolution
=
50e–9
6.
Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 12.
7.
Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_AC_VOLTS_DCCOUPLED
•
Range
=
0.05
•
Resolution
=
50e–9
8.
Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 12.
9.
Output 50 mV at 30 Hz on the calibrator.
