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National Instruments Corporation
39
NI 446X Calibration Procedure
16. Perform the AO calibration for this gain setting using the following
function.
17. Repeat steps 4 through 16 for all remaining gain values used in steps 4
and 16. Also modify the device requested high and low voltages used
in steps 4 and 16. You can find the values in Table 7.
18. Repeat steps 1 and 4 through 17 for analog output channel 1 of the
device. Replace
ao0
with
ao1
in the function call parameters
physicalChannel
and
channel
.
NI-DAQmx Function Call
LabVIEW Block Diagram
Call
DAQmxAdjustDSAAOCal
with the
following parameters:
calHandle
:
myCalHandle
channel
:
0
requestLowVoltage
:
-0.09
actualLowVoltage
:
actualLowVoltage
requestedHighVoltage
:
0.09
actualHighVoltage
:
actualHighVoltage
gainSetting
:
-40.0
Table 7.
Device Output Voltages for AO Calibration
Device Gain (dB)
Device Output Voltage (V)
– 40
0.09 (Requested High Voltage)
– 0.09 (Requested Low Voltage)
–20
0.90 (Requested High Voltage)
– 0.90 (Requested Low Voltage)
0
9.00 (Requested High Voltage)
–9.00 (Requested Low Voltage)