National Instruments NI 54 Series, Calibration Procedure

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Chapter 3 Adjustment
© National Instruments Corporation 3-9 NI 54XX Calibration Procedure
3. For x = (–10, –7.5, –5, –2.5, 0, 2.5, 5, 7.5, 10), generate a DC output
of amplitude x :
a. Call the function
ni54xx_GenerateWaveform
using the
following parameters:
• sessionHandle —The handle of the calibration session for the
device
• waveType —
NI54XX_DC
• amplitudeInVolts — x
• frequencyInHz —
0.0
b. Measure the outputs (
mainDACSweepResults[]
).
4. Feed the measurements to
ni54xx_CalAdjust
. The
measuredData
are the new array of measurements, and the
actualData
are the DAC
values corresponding to outputs (see Table 3-2). Call the function
ni54xx_CalAdjust
using the following parameters:
• sessionHandle —The handle of the calibration session for the
device
• measurementMode —
NI54XX_SET_A3
• actualData —
mainDACSweepValues
• measuredData —
mainDACSweepResults
5. Set the gain calibration DAC to –8192 by calling the function
ni54xx_SetGainDAC
. Set the following parameters:
• sessionHandle —The handle of the calibration session for the
device
• DACValue — –
8192
6. For x = (–10, –7.5, –5, –2.5, 0, 2.5, 5, 7.5, 10)
a. Generate a DC output of amplitude x by calling the function
ni54xx_GenerateWaveform
. Set the following parameters:
• sessionHandle —The handle of the calibration session for the
device
• waveType —
NI54XX_DC
• amplitudeInVolts — x
• frequencyInHz —
0.0
b. Measure the outputs (
mainDACSweepResults[]
).