![background image](http://html1.mh-extra.com/html/national-instruments/flexdmm-pxi-4070/flexdmm-pxi-4070_calibration-procedure_3422604009.webp)
©
National Instruments Corporation
9
NI 4070/4072 Calibration Procedure
14. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_DC_VOLTS
•
Range
=
100
•
Resolution
=
100e–6
15. Set the input resistance of the NI 4070/4072 to 10 M
Ω
by calling
niDMM_SetAttributeViReal64
with the following parameters:
•
Attribute_ID
=
NIDMM_ATTR_INPUT_RESISTANCE
•
Attribute_Value
=
NIDMM_VAL_10_MEGAOHM
16. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
17. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_DC_VOLTS
•
Range
=
300
•
Resolution
=
300e–6
18. Set the input resistance of the NI 4070/4072 to 10 M
Ω
by calling
niDMM_SetAttributeViReal64
with the following parameters:
•
Attribute_ID
=
NIDMM_ATTR_INPUT_RESISTANCE
•
Attribute_Value
=
NIDMM_VAL_10_MEGAOHM
19. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
20. Remove the shorting bar from the NI 4070/4072.
21. Reset the calibrator.
22. Fasten the connectors on one end of the Fluke 5440 cable to the
appropriate banana plug connectors of 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.