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Piranha2 User’s Manual
Subtracting Offset in Calibrated Mode
To subtract the A/D offset from the video signal in calibrated mode only (
svm 1
), prior to
the PRNU correction, use the command:
Syntax:
sdo t i
Syntax Elements:
t
Tap selection. Allowable range is 1 to 4, or 0 for all taps.
i
Subtracted offset value in a range from 0 to 511.
Notes:
•
When subtracting a digital value from the digital video
signal, the output can no longer reach its maximum. Use the
ssg
command to correct for this. See section 3.13 Setting
Gains for details on the
ssg
command.
•
Available in calibrated mode only (
svm 1
).
Example:
sdo 0 100
Calibrating Offset
To calibrate the analog offset, use the command:
Syntax:
cao t i
Syntax Elements:
t
Tap selection. Allowable range is 1 to 4, or 0 for all taps.
i
The line average in a range dependent on the current
camera data mode setting.
8 bit: 1 to 100DN
10 bit: 4 to 400DN
See section 3.11 Returning Video Information for more
information on line averages
Notes:
This command sets offset in
uncalibrated
mode (
svm 0
).
Example:
cao 0 100
03-32-00493-11
DALSA
