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National Instruments Corporation
13
NI 4070/4072 Calibration Procedure
45. Set the input resistance of the NI 4070/4072 to >10 G
Ω
by calling
niDMM_SetAttributeViReal64
with the following parameters:
•
Attribute_ID
=
NIDMM_ATTR_INPUT_RESISTANCE
•
Attribute_Value
=
NIDMM_VAL_GREATER_THAN_10_GIGAOHM
46. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
47. 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
48. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
49. Output –1 V on the calibrator.
50. Set the input resistance of the NI 4070/4072 to >10 G
Ω
by calling
niDMM_SetAttributeViReal64
with the following parameters:
•
Attribute_ID
=
NIDMM_ATTR_INPUT_RESISTANCE
•
Attribute_Value
=
NIDMM_VAL_GREATER_THAN_10_GIGAOHM
51. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
52. 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
53. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.
54. Output 10 V on the calibrator.
55. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_DC_VOLTS
•
Range
=
10
•
Resolution
=
10e–6
56. Set the input resistance of the NI 4070/4072 to >10 G
Ω
by calling
niDMM_SetAttributeViReal64
with the following parameters:
•
Attribute_ID
=
NIDMM_ATTR_INPUT_RESISTANCE
•
Attribute_Value
=
NIDMM_VAL_GREATER_THAN_10_GIGAOHM
57. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 17.