NI 4071 7½-Digit FlexDMM Calibration Procedure
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© National Instruments
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131
12. Generate –10
A on the calibrator with the current output set to
NORM
.
13. Call the niDMM Cal Adjust Gain VI with the following parameters:
14. Connect the Fluke 5720A calibrator to the NI 4071 with a DC current shunt/voltmeter
system in series, as shown in Figure 5. Table 14 lists the cable connections. Use the shunt
recommended for ±100 µA as indicated in Table 13.
15. Wait two minutes for the thermal EMF to stabilize.
16. Generate 100
A on the calibrator with the current output set to
NORM
.
17. Call the niDMM Cal Adjust Gain VI with the following parameters:
18. Generate –100
A on the calibrator with the current output set to
NORM
.
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_CalAdjustGain
with
the following parameters:
Instrument_Handle
:
The instrument
handle from
niDMM_init
Mode
:
NIDMM_VAL_DC_CURRENT
Range
:
10e–6
Input_Resistance
:
NIDMM_VAL_RESISTANCE_NA
Expected_Value
:
–10e–6
LabVIEW Block Diagram
C/C++ Function Call
Call
niDMM_CalAdjustGain
with
the following parameters:
Instrument_Handle
:
The instrument
handle from
niDMM_init
Mode
:
NIDMM_VAL_DC_CURRENT
Range
:
100e–6
Input_Resistance
:
NIDMM_VAL_RESISTANCE_NA
Expected_Value
:
The characterized
100
A value.