4M30 Camera User’s Manual
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DALSA
03-32-10030-04
Value
= 1744
= 06D0h
Write MSB
Write LSB
Command
Value
Command
Value
Binary
0001 0011
0000 0110
0001 0010
1101 0000
Hex
13h
06h
12h
D0h
The read user offset commands allow the user to read back this information from the camera.
Reading Channel 4 Offset from the Camera
To read Channel 4 offset setting from the camera, use these commands:
Read MSB
Read LSB
Binary
0111 0011
0111 0010
Hex
73h
72h
3.11 Automatic Offset Control (AOC)
The AOC defines the digitized value of black for the camera. An ideal camera (no dark current, no
shot noise, etc.) in total darkness produces an image with all pixels equal to the AOC set point
value. This command allows you to control the AOC set point of the ADC video board. The four
ADC video boards in the 4M30 can each be controlled independently. Normally all channels are
controlled with the same set point value. The default value is 50 DNs, or counts.
Example: Set the Channel 2 AOC Set Point to 32 DNs
Value
= 32
= 20h
Command
Value
Binary
0001 1000
0010 0000
Hex
18h
20
3.12 No Clean Mode
There is no way to prevent the CCD imager from integrating (accumulating charge due to light
falling on the imager). Under some conditions this will cause the image to show smearing in the
vertical direction, and increase Dark Current. In order to reduce this effect, the 4M30 camera runs
horizontal and vertical clocks during idle time to flush the charge. Under some conditions, this
feature may be undesirable. For example, when wanting to synchronize camera integration to an
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