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National Instruments Corporation
31
NI PXI-4070 Calibration Procedure
Average the results by summing the returned reading array of the
function and dividing by the returned actual number of points. Store
the result as the 10 k
Ω
range offset.
18. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_2_WIRE_RES
•
Range
=
1e3
•
Resolution
=
1e–3
19. Call
niDMM_ConfigureMultiPoint
with the following parameters:
•
Trigger Count
=
1
•
Sample Count
=
4
•
Sample Trigger
=
NIDMM_VAL_IMMEDIATE
•
Sample Interval
=
–1
20. Call
niDMM_ReadMultiPoint
with the following parameters:
•
Maximum Time
=
NIDMM_VAL_TIME_LIMIT_AUTO
•
Array Size
=
4
Average the results by summing the returned reading array of the
function and dividing by the returned actual number of points. Store
the result as the 1 k
Ω
range offset.
21. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_2_WIRE_RES
•
Range
=
100
•
Resolution
=
100e–6
22. Call
niDMM_ConfigureMultiPoint
with the following parameters:
•
Trigger Count
=
1
•
Sample Count
=
10
•
Sample Trigger
=
NIDMM_VAL_IMMEDIATE
•
Sample Interval
=
–1
23. Call
niDMM_ReadMultiPoint
with the following parameters:
•
Maximum Time
=
NIDMM_VAL_TIME_LIMIT_AUTO
•
Array Size
=
10
Average the results by summing the returned reading array of the
function and dividing by the returned actual number of points. Store
the result as the 100
Ω
range offset.
24. Output 100 M
Ω
on the calibrator with no external sense or 2-wire
compensation.