National Instruments NI PXI-5422 用户手册

33. Call 

niFgen_SetAttributeViBoolean

 to disable the analog 

output (niFgen property node: Basic Operation»Output Enabled) 
using the following parameters:

•

vi: The session handle returned from 

niFgen_InitExtCal

•

channelName: 

"0"

•

attributeID: 

NIFGEN_ATTR_OUTPUT_ENABLED

•

value: 

VI_FALSE

34. Call 

niFgen_SetAttributeViInt32

 to set the calibration ADC 

input (niFgen property node: Calibration»Cal ADC Input) using 
the following parameters:

•

vi: The session handle returned from 

niFgen_InitExtCal

•

channelName: 

""

 (empty string)

•

attributeID: 

NIFGEN_ATTR_CAL_ADC_INPUT

•

value: 

NIFGEN_VAL_GROUND

35. 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

When you have completed all the adjustment stages, you must close the 
external adjustment session to store the new calibration constants in the 
onboard EEPROM.

Call 

niFgen_CloseExtCal

 (niFgen Close Ext Cal VI) using the 

following parameters:

•

vi: The session handle returned from 

niFgen_InitExtCal

 

•

action:

–

If the external adjustment procedure completed without any 
errors, use 

NIFGEN_VAL_EXT_CAL_COMMIT

. This function 

stores the new calibration constants, updated calibration dates, 
updated calibration temperatures in the onboard EEPROM. 

–

If any errors occurred during the external adjustment 
procedure, or if you want to abort the operation, use 

NIFGEN_VAL_EXT_CAL_ABORT

. This function discards 

the new calibration constants and does not change any 
of the calibration data stored in the onboard EEPROM.