American Dynamics ADCA330CN, Руководство по установке

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9
Installation Manual Fixed Color Cameras
AUTO LENS DETECT - INSTALLING AUTO IRIS LENSES
These cameras automatically sense the type of auto-iris lens that is being used. This should
result in less field installation errors due to incorrect switch settings. These cameras support
either direct drive (DC) or video drive auto-iris lenses. The lenses are connected to the camera
via a 4-pin square socket located on the side of the camera.
Connecting Direct Drive (DC) Lenses
1. Turn the back focus adjustment ring fully counterclockwise (when viewed from the front)—
see Back Focus Adjustment .
2. Fit the lens to the camera and connect it according to the diagram below.
Damp (-)
Damp (+)
Drive (+)
Drive (-)
Direct Drive (DC) Lenses
The maximum load for this type of lens must not exceed 25mA
3. Turn the Automatic Electronic Shutter (AES) and Automatic Gain Control (AGC) features
OFF.
4. If the lens has a focusing ring fitted, set it to infinity ( ¥ ) and then adjust the back focus—see
Back Focus Adjustment .
5. With typical scene illumination, set the DC Lens Level adjustment potentiometer on the rear
of the camera for the correct exposure. This can be achieved either visually, or by using an
oscilloscope to set the output of the camera to 1V peak-peak.
6. Ensure Automatic Gain Control (AGC) is now turned ON. AES must remain OFF.
Connecting Video Drive Lenses
1. Turn the back focus adjustment ring fully counterclockwise (when viewed from the front)—
see Back Focus Adjustment .
2. Fit the lens to the camera and connect it according to the diagram below.
Video Drive Lenses
Lens supply (+) Video Drive signal
Lens Ground
The maximum load for this type of lens must not exceed 50mA
3. Turn the Automatic Electronic Shutter (AES) and Automatic Gain Control (AGC) features
OFF.
4. If the lens has a focusing ring fitted, set it to infinity ( ¥ ) and then adjust the back focus—see
Back Focus Adjustment .
5. Refer to the lens instructions and adjust the lens for the optimum picture (video output level
of 1V peak-to-peak).
6. Ensure Automatic Gain Control (AGC) is now turned ON. AES must remain OFF.