National Instruments NI PXI-5422 用户手册

g.

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: –

29232

h.

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

i.

Wait 500 ms for the output to settle.

j.

Use the DMM to measure the voltage output by the device. This 
measurement is 

measurement 1

, which is used in step 8.

8.

Call 

niFgen_CalAdjustMainPathPreAmpGain

 (niFgen Cal 

Adjust Main Path Pre Amp Gain 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 8

•

mainDACValues: An array containing two elements—the two 
values (

25233

, –

29232

) that you set for the main DAC in the 

order that you measured them

•

gainDACValues: An array containing two elements—the two 
values (

1500

, 

2000

) that you set for the gain DAC in the order 

that you measured them

•

offsetDACValues: An array containing one element—the value 
(

32000

) that you set for the offset DAC

•

measuredOutputs: An array containing two elements—the 
two output voltages (

measurement 0

, 

measurement 1

) that 

you measured in the order that you measured them