Dalsa PC-30-02K80 - Setting Thresholds

Piranha Color Camera User’s Manual 59
DALSA 03-032-10211-01 5/9/2007
Syntax Elements:
i
0 Disable end-of-line sequence
1 Enable end-of-line sequence, LVAL is not high for
end-of-line statistics.
2 LVAL high for video and end-of-line statistics
Notes:
Example:
els 1
Table 7: End-of-Line Sequence Description
Location Value Description
1 AA
16
2 55
16
3 AA
16
By ensuring these values consistently
toggle between AA
16
and 55
16
, you can
verify cabling (i.e. no stuck bits)
4 4 bit counter LSB justified Counter increments by 1. Use this value
to verify that every line is output
5 Line sum (7…0)
6 Line sum (15…8)
7 Line sum (23…16)
8 Line sum (31…24)
Use these values to help calculate line
average and gain
9 Pixels above threshold (7…0)
10 Pixels above threshold
(15…8)
11 Pixels below threshold (7…0)
12 Pixels below threshold
(15…8)
Monitor these values (either above or
below threshold) and adjust camera
digital gain and background subtract to
maximize scene contrast. This provides a
basis for automatic gain control (AGC)
13 Differential line sum (7..0)
14 Differential line sum (15…8)
15 Differential line sum (23…16)
16 Differential line sum (31…24)
Use these values to focus the camera.
Generally, the greater the sum the greater
the image contrast and better the focus.
Setting Thresholds
Setting an Upper Threshold
Purpose: Sets the upper threshold limit to report in the end-of-line
sequence.
Syntax:
sut i
Syntax Elements:
i
Upper threshold limit in range from 0 to 4095.
Notes: You must first select the color or colors you want to ad
j
ust using
the scl command.
RGB: all outputs
R: red output
G: green output
B: blue output
To change just the white (luminance) value, first change all