User`s manual

54 Spyder3 S3-14 and S3-24 User's Manual
03-032-20117-00 Teledyne DALSA
2. Adjust the line rate so that the average output is about 80% of the full output, or below the PRNU target
value by:
Adjusting the lighting, if you are using an internal exposure mode. Or,
Adjusting the line rate, if you are using the Smart Exsync mode.
3. Calibrate the PRNU using the command cpa 2 i, where 2 is the PRNU calculated using the entered target
value as shown in the formula on page 56 and i is the target value and the value of i is 1024 to 4055 DN.
For example: cpa 2 3300
4. Save the PRNU coefficients using the command wpc.
For example: wpc
Note: Both the FPN and PRNU coefficients are always turned on.
Digital Signal Processing
To optimize camera performance, digital signal processing should be completed after any analog
adjustments.
FPN Correction
Performs FPN correction and eliminates FPN noise by removing individual pixel dark current.
Camera Link Command
Parameter
Description
Notes
ccf
 Perform all analog and digital adjustments
before performing FPN correction.
 Perform FPN correction before PRNU
correction.
 Refer to Calibrating the Camera to Remove
Non-Uniformity (Flat Field Correction) on
page 51 for a procedural overview on
performing flat field correction.
 To save FPN coefficients after calibration,
use the wfc command. Refer to section
Saving and Restoring PRNU and FPN
Coefficients for details.
Example
ccf