Troubleshooting - Eneo VKC-1341A/12-24 Installation And Operating Instructions Manual

AES (automatic shutter
control)
Iris adjustment

8. Troubleshooting

If problems occur, verify the installation of the camera with the instructions in this manual and
with other operating equipment. Isolate the problem to the specific piece of equipment in the
system and refer to the equipment manual for further information.
Problem
No video
Video but no control
Dark video
If a camera is operated with controlled lenses, regardless of whe-
ther DC or AI, the AES must be switched off. Problems arise if this
is not done because both control systems try to steer the volume
of light for the camera. As the AES generally reacts faster, the iris
remains fully opened and the shutter resumes the control work,
which produces major drawbacks. As the iris is open, the depth of
focus is very low. When shutter times are short, this can cause a
smear effect (bright, vertical stripes in light parts of the picture).
The working point of the iris should always be above the AGC start
and below that of the white clip. This range is very small with
some cameras, making it difficult to adjust the lens. It is therefore
advisable to switch off the AGC (if possible) when adjusting the iris.
Once the lens has been focussed, the AGC must be switched back
on (only for cameras which allow the AGC to be switched off).
In the case of DC lenses, the working point of the iris is adjusted at
the camera's level potentiometer (the AI amplifier is built into the
camera).
Solutions
. Verify power is applied to all pieces of the equipment in the
system. The camera LED should be ON.
. Verity that the video cables are connected correctly.
3. Verity that the lens cap has been removed from the lens and the
iris of the lens is open.
Power down the system for one minute then re-apply power.
. Adjust iris.
. Check A/I connections.
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