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NI PXI-5422 Calibration Procedure 50 ni.com
9. Call niFgen_SetAttributeViInt32 to set the analog path value
(niFgen property node: Output Attributes»Analog Path) using the
following parameters:
• vi: The session handle returned from
niFgen_InitExtCal
• channelName: "0"
• attributeID: NIFGEN_ATTR_ANALOG_PATH
• value: NIFGEN_VAL_DIRECT_ANALOG_PATH
10. Call niFgen_Commit (niFgen Commit VI) to commit the attribute
values to the device using the following parameter:
• vi: The session handle returned from
niFgen_InitExtCal
11. Take the following voltage measurements at the NI PXI-5422 CH 0
front panel connector into a high-impedance load:
a. Call
niFgen_WriteBinary16AnalogStaticValue (niFgen
Write Binary 16 Analog Static Value VI) to set the main DAC
value using the following parameters:
• vi: The session handle returned from
niFgen_InitExtCal
• channelName:
"0"
• value: 32767
b. Call niFgen_SetAttributeViInt32 to set the gain DAC value
(niFgen property node: Calibration»Gain DAC Value) using the
following parameters:
• vi: The session handle returned from
niFgen_InitExtCal
• channelName: "0"
• attributeID: NIFGEN_ATTR_GAIN_DAC_VALUE
• value: 1800
c. Call niFgen_Commit (niFgen Commit VI) to commit the
attribute values to the device using the following parameter:
• vi: The session handle returned from
niFgen_InitExtCal
d. Wait 500 ms for the output to settle.
e. Use the DMM to measure the voltage output by the device. This
measurement is
measurement 0, which is used in step 12.
f. Call niFgen_SetAttributeViInt32 to set the gain DAC value
(niFgen property node: Calibration»Gain DAC Value) using the
following parameters:
• vi: The session handle returned from
niFgen_InitExtCal
• channelName: "0"
• attributeID: NIFGEN_ATTR_GAIN_DAC_VALUE
• value: 2600