VTC-C750WDR
7
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4.2 Rear side view
5. Installation and commissioning Instructions
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Make sure the power is removed before the installation.
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Follow the order for applying power.
First connect the low voltage (DC12V or AC24V), then plug the AC adapter to AC outlets to avoid an
improper reset from power jitter and a damage from the surge voltage when no load.
5.1. Attaching the lens
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Remove the Dust Protection cap from the lens mount
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Screw the lens onto the camera without using force
5.2. Setting the back focus lock
The back focus is the distance between the lens support on the camera and the image sensor. Optimum focus
is only possible when the correct distance is set. It may be necessary to set the back focus in individual cases
due to production tolerances of the lens. The iris of the lens must be open as wide as possible. (smallest F
value) to set the back focus. For lenses with automatic iris control, you will require a ND filter (gray filter) to
prevent the iris from closing in bright light.
Setting for lenses with a fixed focal distance
If the focus cannot be set exactly by turning the focus ring (lens), please proceed as follows;
1. Point the camera at an object with sufficient contrast. The distance to the object should be longer than
1,000 x the focal distance.
2. Open the iris on the lens
3. Set the focus of lens so that the distance at the lens is close to infinity but not to exact infinity position.
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OSD menu switches (Up/ Down/ Left/ Right / Enter)
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Video Output Connector (BNC)
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Power indicator LED
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Power Input Terminal
