12
Installation Instructions
INSTALLING DIRECT (OR D.C.) DRIVE LENSES
1. Turn the back focus adjustment ring fully clockwise (when viewed from the front)see
Back Focus Adjustment
.
2. Fit the lens to the camera and connect it according to the diagram below.
The maximum load for this type of lens must not exceed 25mA
3. Set the Auto Iris lens selector (switch 5, figure 1) to DD.
4. Turn the Electronic Iris (EI) and Automatic Gain Control (AGC) features OFF.
5. If the lens has a focussing ring fitted, set it to infinity (
¥
) and then adjust the back focus
see
Back Focus Adjustment
.
6. With typical scene illumination, set the DD Lens Level adjustment potentiometer (3, figure 1)
lens iris 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.
7. If the scene lighting conditions are extremely uneven, it may be necessary to adjust the DD
Peak Average potentiometer (4, figure 1)see
DD Peak Average Adjustment
Potentiometer
.
8. Ensure the Automatic Gain Control (AGC) features is turned ON.
INSTALLING VIDEO DRIVE LENSES
1. Turn the back focus adjustment ring fully clockwise (when viewed from the front)see
Back Focus Adjustment
.
2. Fit the lens to the camera and connect it according to the diagram below.
The maximum load for this type of lens must not exceed 50mA
3. Set the Auto Iris lens selector (switch 5, figure 1) to AI.
4. Turn the Electronic Iris (EI) and Automatic Gain Control (AGC) features OFF.
5. If the lens has a focussing ring fitted, set it to infinity (
¥
) and then adjust the back focus
see
Back Focus Adjustment
.
Damp (-)
Damp (+)
Drive (+)
Drive (-)
DD Lenses
AI Lenses
Lens supply (+)
Video Drive signal
Lens Ground
