©
National Instruments Corporation
21
NI 4070/4072 Calibration Procedure
27. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_AC_VOLTS_DCCOUPLED
•
Range
=
300
•
Resolution
=
300e–6
28. Call
niDMM_Read
. The DMM must be in the 300 V range before you
apply the voltage.
29. Output 219 V at 30 Hz on the calibrator.
30. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 18.
31. Refer to Table 7 for the appropriate calibrator outputs and parameter
values as you complete the following steps:
a.
On the calibrator, output the value listed in the
Calibrator Output
column in Table 7 for the current iteration.
b.
Call
niDMM_ConfigureMeasurement
with
Mode
set to
NIDMM_VAL_AC_VOLTS
and the remaining parameters as shown
in Table 7 for the current iteration.
c.
Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 18.
d.
Call
niDMM_ConfigureMeasurement
again, changing
Mode
to
NIDMM_VAL_AC_VOLTS_DCCOUPLED
.
e.
Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 18.
Table 7.
niDMM_ConfigureMeasurement Parameters
Iteration
Calibrator Output
niDMM_ConfigureMeasurement Parameters
Amplitude
Frequency
Function
Range
Resolution
1
219 V
50 Hz
NIDMM_VAL_AC_VOLTS
300
300e–6
219 V
50 Hz
NIDMM_VAL_AC_VOLTS_DCCOUPLED
300
300e–6
2
219 V
1 kHz
NIDMM_VAL_AC_VOLTS
300
300e–6
219 V
1 kHz
NIDMM_VAL_AC_VOLTS_DCCOUPLED
300
300e–6
3
219 V
20 kHz
NIDMM_VAL_AC_VOLTS
300
300e–6
219 V
20 kHz
NIDMM_VAL_AC_VOLTS_DCCOUPLED
300
300e–6
4
219 V
50 kHz
NIDMM_VAL_AC_VOLTS
300
300e–6
219 V
50 kHz
NIDMM_VAL_AC_VOLTS_DCCOUPLED
300
300e–6