National Instruments 446 Series Calibration Procedure page 39

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