Spyder3 GigE Vision User’s Manual
DALSA 03-032-20027-02
55
Location Value Description
3 A’s
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
Sets the upper threshold limit to report in the end-of-line sequence.
UpperThresholdLimitRaw
Upper threshold limit in range from 0 to 4095.
• LVAL is not high during the end-of-line statistics.
Setting a Lower Threshold
Sets the lower threshold limit to report in the end-of-line sequence.
LowerThresholdLimitRaw
Lower threshold limit in range from 0 to 4095.
• LVAL is not high during the end-of-line statistics.
Related Commands:
• UpperThresholdLimitRaw
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