User`s manual

32 Piranha HS 4x User’s Manual
03-32-10040-03 PRELIMINARY DALSA Corp.
Digital Signal Processing
To optimize camera performance, digital signal processing should be completed after any
analog adjustments.
Setting Digital Gain for Tap to Tap Matching
The set system gain command allows you to adjust all taps at once, or each tap
individually for precise control over tap-to-tap matching. For a better signal to noise ratio,
perform digital gain adjustments after analog gain adjustments.
To set the digital gain, use the command:
Syntax:
ssg t i
Syntax Elements:
t
Tap value. Use 0 for all taps or 1-4 for individual tap
selection.
i
0-511. 0 corresponds to low gain (1x). 511 corresponds to high
gain (2x).
Example:
ssg 0 20
Subtracting Digital Offset
To subtract the A/D offset from the video signal, 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
• Digital offset is recalculated after sending the ccf command.
See the Dark Calibration description on page 28 for more
information on the ccf command.
Example:
sdo 0 100