Verifying Dc Voltage - National Instruments PXI-4070 Manual

You will use the Session in all subsequent function calls throughout the verification
Note
procedures.

Verifying DC Voltage

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NI Digital Multimeters Help.
4. Call
niDMM_SelfCal
NI 4070 within the last 24 hours and the temperature has remained
constant to within ±1 °C of the calibration temperature (T
To verify DC voltage of the NI 4070, complete the following steps:
1. Plug in the insulated banana plug shorting bar across the HI and LO
banana plug connectors on the NI 4070.
2. Wait one minute for the thermal EMF to stabilize.
3. Call
niDMM_reset
4. Call
niDMM_ConfigureMeasurement
parameters:
• Function =
NIDMM_VAL_DC_VOLTS
• Range =
1
• Resolution =
5. Set the input resistance of the NI 4070 to >10 GΩ by calling
niDMM_SetAttributeViReal64
• Attribute_ID =
• Attribute_Value =
6. Call
niDMM_Read
limits listed in Table 11.
7. Set the input resistance of the NI 4070 to 10 MΩ by calling
niDMM_SetAttributeViReal64
• Attribute_ID =
• Attribute_Value =
8. Call
niDMM_Read
limits listed in Table 11.
9. Call
niDMM_ConfigureMeasurement
parameters:
• Function =
NIDMM_VAL_DC_VOLTS
• Range =
10
• Resolution =
niDMM_init
. This step is optional if you have adjusted the
.
1e–6
with the following parameters:
NIDMM_ATTR_INPUT_RESISTANCE
NIDMM_VAL_GREATER_THAN_10_GIGAOHM
. Verify that this measurement falls between the
with the following parameters:
NIDMM_ATTR_INPUT_RESISTANCE
NIDMM_VAL_10_MEGAOHM
. Verify that this measurement falls between the
10e–6
11
function, refer to the
).
cal
with the following
with the following
NI PXI-4070 Calibration Procedure