11
7.
Set the backfocus of the camera before the final adjustment of the video
level.
See section 3.6 for further instructions.
8.
If the auto-iris has a gain adjustment:
•
If the lens oscillates between open and closed under bright lights,
slowly turn the gain adjustment counter-clockwise until the
oscillating stops.
•
Increase the light getting to the camera by adjusting the level control
and readjusting the gain control as necessary.
DC-TYPE AUTO-IRIS LENS INSTALLATION
AND ADJUSTMENT
The cameras support DC-type auto-iris lenses.
Perform the following steps to install and adjust a DC-type auto-iris lens.
1.
Thread the DC-type auto-iris lens onto the lens mount on the front of the
camera.
2.
If using an Ultrak lens, skip to step 3.
If using a non-Ultrak lens, use the manufacturer’s instructions to solder
the connector that comes supplied with the camera to the lens control
wires. The pin-out and wire color-coding for DC-type
auto-iris lenses can vary from one manufacturer to another.
3.
Plug the connector into the dc iris jack on top of the camera. The
connector is keyed and can only be inserted into the jack one way.
4.
Make sure that the E/I switch located on the back of the camera is set to
OFF and the A/I switch is in the DC position.
5.
Apply power to the camera.
6.
Adjust the DC-type auto-iris lens for an optimum picture using the IRIS
LEVEL control on the back of the camera.
