34 Spyder2 User’s Manual
03-032-10091-06 Teledyne DALSA
Use the sut and slt commands to set threshold values between 0 and 255 for 8-bit data
modes, or 0 to 1023 for 10-bit data modes.
To further aid in debugging and cable/ data path integrity, the first six bits of the output
of the end-of-line sequence are "aa", "55", "aa". Refer to the table below .
Location Value Description
1 A’s By ensur i ng these val ues consi stently toggl e
betw een "aa" and "55", you can verify cabling
(i.e. no stuck bits)
2 5’s
3 A’s
4 4 bit counter LSB justified Counter increments by 1. Use this value to
verify that ev er y l i ne is output
5 Line sum LSB Use these v alues to help cal cul ate l i ne
average
6 Li ne sum M ID
7 L i n e su m M SB
8 0
9 Pi xels abov e threshold LSB Monitor these val ues (either above or below
threshold) and adjust camera gain to keep
these values relatively constant. This
provides a basis for automatic gain control
(AGC)
10 Pi xel s above threshold
11
Pixels below threshold LSB
12 Pixels below threshold
M SB
13 Derivative line sum LSB Use these val ues to focus the camer a.
Generally, the greater the sum the greater the
image contr ast
14 Derivative line sum Mid
15 Derivative line sum MSB
16 0
Test Pattern
The camera can generate a test pattern to aid in system debugging. Use the command
svm 2 to activate the test pattern. The test pattern is a ramp from 0 to 255DN, which then
starts at 0 again. Use the test pattern to verify the proper timing and connections between
the camera and the frame gr abber.
3.18 Monitoring the Camera
The camera is equipped with a red/ green LED used to display the operational status of
the camera. The following table summarizes the operating states of the camera and the
corresponding LED states:
LED state Priority Camera Status Condition
Fatal hardw ar e fai lure
St ead y RED 2 Warning Monitoring task failure
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