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NI PXI-5422 Calibration Procedure 48 ni.com
9. Call niFgen_CalAdjustMainPathPostAmpGainAndOffset
(niFgen Cal Adjust Main Path Post Amp Gain And Offset VI)
using the following parameters:
• vi: The session handle returned from
niFgen_InitExtCal
• channelName: "0"
• configuration: The Current Configuration value for the current
iteration from Table 9
• mainDACValues: An array containing two elements—the values
(
0, 0) that you set on the main DAC
• gainDACValues: An array containing one element—the value
(
2000) that you set on the gain DAC
• offsetDACValues: An array containing two elements—the two
values (
50000, 15000) that you set on the offset DAC in order
• measuredOutputs: An array containing two elements—the
two output voltages (
measurement 0, measurement 1) that
you measured in order
Adjusting the Direct Path Gain
1. 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: 0
2. 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: 2000
3. Call niFgen_SetAttributeViInt32 to set the offset DAC value
(niFgen property node: Calibration»Offset DAC Value) using the
following parameters:
• vi: The session handle returned from
niFgen_InitExtCal
• channelName: "0"
• attributeID: NIFGEN_ATTR_OFFSET_DAC_VALUE
• value: 32767