Dalsa PC-30-02K80-R, Manual

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Piranha Color Camera User’s Manual 50
DALSA 03-032-10211-03 9/27/2007
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 where:
ssg value =
max output value
max output value ‐ ssb value
See the following section for details on the
ssg
command.
Related Commands:
ssg
Example
ssb 0 800
In 8-bit Camera Link mode: If your scene has a minimum value
of 50 DN and a maximum of 200 DN, then to expand it to 0
DN and 255 DN, set the
ssb
command to
800
(50 x 16), and
the
ssg
command to
6990
(4096 / ((200 – 50) x 16)) x 4096).
Setting Digital System Gain
Purpose: Improves signal output swing after a background subtract.
When subtracting a digital value from the digital video signal,
using the
ssb
command, the output can no longer reach its
maximum. Use this command to correct for this where:
ssg value =
max output value
max output value ‐ ssb value
Syntax:
ssg t i
Syntax Elements:
t
Tap selection. Allowable range is
1
to
4
, or
0
for all taps.
i
Gain setting. The gain ranges are
0
to
65535
. The digital
video values are multiplied by this value where:
Therefore, the multiplication factor range is 0 to 16.
Use this command in conjunction with the
ssb
command.
Related Commands:
ssb
Example:
ssg 1 15
Setting Add Background
Purpose: Use the set add background command to ensure a minimum
output value by adding this value to the digital video after
system gain is applied.
Syntax:
sab t i
Syntax Elements:
t
Tap selection.
0
for all taps. Color selection limits the taps
that may be selected. See the
scl
command for details.
i
Background add values. The range is from
0
to
4095
.
Related Commands:
ssg, scl
Example:
sab 1 25
i
Digital Gain=
4096