User`s manual

Falcon 4M Camera Manual
03-032-20044-01 DALSA
46
3.7.3 Selecting the Calibration Sample Size
Setting the Number of Frames to Sample
Purpose: Sets the number of frames to sample when performing pixel
coefficient calculations. Higher values cause calibration to take
longer but provide the most accurate results.
Syntax:
css i
Syntax Elements:
i
Number of lines to sample. Allowable values are 32, 64, 128
(factory setting), 256, 512, or 1024.
Notes:
 To return the current setting, use the gcp command.
Example:
css 1024
3.7.4 Performing FPN Calibration
Calibrating All Camera Pixels
Purpose: Performs FPN calibration and eliminates FPN noise by subtracting
away individual pixel dark current.
Syntax:
ccf
Notes:
 Before performing this command, stop all light from entering the
camera. (Tip: cover lens with a lens cap.)
 The goal is to subtract all non-uniformities and offsets in order
to obtain a 0DN output in the dark. Analog offset should
therefore be set to 0 since it gets subtracted out during CCF.
 Set the digital gain (ssg) to X1 since during calibration it gets
forced to X1
 Perform FPN correction before PRNU correction.
 The ccf command is not available when the camera is using the
factory calibrated coefficients (csn 0-7). You must select the
user coefficient set (csn 8-15) before you can perform FPN
calibration. An error message is returned if you attempt to
perform FPN calibration when using csn 0-7.
Example:
ccf