©
National Instruments Corporation
15
NI 4070/4072 Calibration Procedure
71. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_DC_VOLTS
•
Range
=
300
•
Resolution
=
300e–6
72. Call
niDMM_Read
. Before you apply the voltage, the DMM must be in
the 300 V range.
73. Output 300 V on the calibrator.
74. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
75. Output –300 V on the calibrator.
76. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
77. Reset the calibrator for safety reasons.
You have completed verifying the DC voltage of the NI 4070/4072. Select
one of the following options:
•
If you want to continue verifying other modes, go to the
section.
•
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 4070/4072, complete the following steps:
1.
Reset the calibrator.
2.
Fasten the connectors on one end of the Fluke 5440 cable to the
appropriate banana plug connectors on the NI 4070/4072, and fasten
the connectors on the other end of the cable to the appropriate
calibrator binding posts. Figure 1 shows the correct connections.
Table 2 lists the cable connections.
3.
Output 5 mV at 1 kHz on the calibrator.
4.
Call
niDMM_reset
to reset the NI 4070/4072 to a known state.
