NI 5412 Calibration Procedure
|
© National Instruments
|
29
Along with the standard NI-FGEN attributes, the external calibration session uses a set of
calibration constants that are determined during the calibration procedure and stored in the
device onboard memory when the session is closed. NI-FGEN uses these calibration constants
during a standard NI-FGEN session to ensure that the device operates within its specifications.
You must close an external calibration session by using
niFgen_CloseExtCal
(niFgen Close
Ext Cal VI).
Figure 4 shows the programming flow for an external calibration procedure.
Figure 4.
NI 5412 External Calibration Procedure
Initializing the External Calibration Session
Call
niFgen_InitExtCal
(niFgen Init Ext Cal VI) to open an NI-FGEN external calibration
session using the following parameters:
•
resourceName
: The name of the device you want to calibrate. This name can be found
under Devices and Interfaces in MAX.
•
password
: The password required to open an external calibration session. If this password
has not been changed since manufacturing, the password is
"NI"
.
Initialize Ext Cal Session
Initialize Analog Output Calibration
Adjust Main Path Pre-Amp Offset
Adjust Main Path Pre-Amp Gain
Adjust Main Path Post-Amp
Gain and Offset
Adjust Oscillator Frequency
Adjust Calibration ADC
Close Ext Cal Session
Initialize Calibration
ADC Calibration
Initialize Oscillator
Frequency Calibration
