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NI PXI-4070 Calibration Procedure
42
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10. Call
niDMM_CalAdjustGain
with the following parameters:
•
Mode
=
NIDMM_VAL_DC_VOLTS
•
Range
=
10
•
Input Resistance
=
NIDMM_VAL_GREATER_THAN_10_GIGAOHM
•
Expected Measurement
=
10
11. Output –10 V on the calibrator.
12. Call
niDMM_CalAdjustGain
with the following parameters:
•
Mode
=
NIDMM_VAL_DC_VOLTS
•
Range
=
10
•
Input Resistance
=
NIDMM_VAL_GREATER_THAN_10_GIGAOHM
•
Expected Measurement
=
–10
13. Remove the connector block from the NI 4070, leaving the spade lugs
connected to the calibrator. Plug in the insulated banana plug shorting
bar across the HI and LO banana plug connectors of the NI 4070.
14. Wait two minutes for the thermal EMF to stabilize.
15. Call
niDMM_CalAdjustOffset
with the following parameters:
•
Mode
=
NIDMM_VAL_DC_VOLTS
•
Range
=
10
•
Input Resistance
=
NIDMM_VAL_GREATER_THAN_10_GIGAOHM
16. Call
niDMM_CalAdjustMisc
with
Type
set to
NIDMM_EXTCAL_MISCCAL_VREF
.
17. Call
niDMM_CalAdjustOffset
with the following parameters:
•
Mode
=
NIDMM_VAL_DC_VOLTS
•
Range
=
0.1
•
Input Resistance
=
NIDMM_VAL_10_MEGAOHM
18. Remove the shorting bar and plug the connector block of the
calibration cable assembly back into the NI 4070.
19. Wait one minute for the thermal EMF to stabilize.
20. Output 10 M
Ω
from the calibrator without external sense.
21. Call
niDMM_CalAdjustGain
with the following parameters:
•
Mode
=
NIDMM_VAL_2_WIRE_RES
•
Range
=
10e6
•
Input Resistance
=
NIDMM_VAL_RESISTANCE_NA
•
Expected Value
=
the display on the calibrator for 10 M
Ω
22. Output 0
Ω
from the calibrator without external sense or 2-wire comp.