Piranha HN RoHS User Manual
Teledyne DALSA
03-032-20135-00
49
Saving and Restoring PRNU and FPN Coefficients
Pixel coefficient sets are saved separately for Forward and Reverse direction, depending on which
direction the camera is operating in when the
wpc
or
wfc
command is issued. It is important that you save
pixel coefficients before switching CCD shift direction or current coefficient values will be lost.
Figure 21: How Pixel Coefficients are saved in the HN-xx Cameras after issuing the wpc or wfc Command
Saving the Current PRNU Coefficients
Purpose:
Saves the current PRNU coefficients for the current direction.
Syntax:
wpc
Notes:
•
Available in TDI mode only.
•
Available only when operating the camera in internal direction control (
scd 0
or
1
)
Example:
wpc
Saving the Current FPN Coefficients
Purpose:
Saves the current FPN coefficients for the current direction.
Syntax:
wfc
Notes:
•
Available in TDI mode only.
•
Available only when operating the camera in internal direction control (
scd 0
or
1
)
Example:
wfc
Loading the Current Pixel Coefficients
Purpose:
Loads the current FPN and PRNU coefficients for the current direction.
Syntax:
lpc
Coefficients saved
for forward direction
only
Camera is operating
in reverse direction
Camera is operating
in forward direction
User issues
or command.
Note: Camera must be operating in TDI Mode
wpc wfc
START
Coefficients saved
for reverse direction
only.
Note: Available in
TDI Mode only.
