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NI PXI-4070 Calibration Procedure
18
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63. Set the input resistance of the NI 4070 to 10 M
Ω
by calling
niDMM_SetAttributeViReal64
with the following parameters:
•
Attribute_ID
=
NIDMM_ATTR_INPUT_RESISTANCE
•
Attribute_Value
=
NIDMM_VAL_10_MEGAOHM
64. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 11.
65. Output 100 V on the calibrator.
66. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_DC_VOLTS
•
Range
=
100
•
Resolution
=
100e–6
67. Set the input resistance of the NI 4070 to 10 M
Ω
by calling
niDMM_SetAttributeViReal64
with the following parameters:
•
Attribute_ID
=
NIDMM_ATTR_INPUT_RESISTANCE
•
Attribute_Value
=
NIDMM_VAL_10_MEGAOHM
68. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 11.
69. Output –100 V on the calibrator.
70. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 11.
71. Call
niDMM_ConfigureMeasurement
with the following
parameters:
•
Function
=
NIDMM_VAL_DC_VOLTS
•
Range
=
300
•
Resolution
=
300e–6
72. Call
niDMM_Read
. The NI 4070 must be in the 300 V range before
applying the voltage.
73. Output 300 V on the calibrator.
74. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 11.
75. Output –300 V on the calibrator.
76. Call
niDMM_Read
. Verify that this measurement falls between the
limits listed in Table 11.
77. Reset the calibrator for safety reasons.