Dalsa Spyder3 User Manual page 51

Spyder3 Color Manual
Table 13: End-of-Line Sequence Description
Location
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Setting Thresholds
Setting an Upper Threshold
Purpose:
Syntax:
Syntax Elements:
Notes:
Related Commands:
Example:
DALSA
Value
A's
5's
A's
4 bit counter LSB justified
Line sum (7...0)
Line sum (15...8)
Line sum (23...16)
Line sum (31...24)
Pixels above threshold (7...0)
Pixels above threshold
(15...8)
Pixels below threshold (7...0)
Pixels below threshold (15...8)
Differential line sum (7..0)
Differential line sum (15...8)
Differential line sum (23...16)
Differential line sum (31...24)
Sets the upper threshold limit to report in the end-of-line
sequence.
sut i
i
Upper threshold limit in range from 0 to 4095.

LVAL is not high during the end-of-line statistics.

,
els slt
sut 1024
Description
By ensuring these values consistently
toggle between "aa" and "55", you can
verify cabling (i.e. no stuck bits)
Counter increments by 1. Use this value to
verify that every line is output
Use these values to help calculate line
average and gain
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)
Use these values to focus the camera.
Generally, the greater the sum the greater
the image contrast and better the focus.
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