Revo REXN540-1 - Manual (Page 11)

5
The camera supports video-type auto iris lenses which adjust to changing light
levels. Perform the following steps to install and adjust a video-type auto iris
lens.
1. If necessary, solder the lens control wires to the connector supplied with
The camera.
VIDEO AUTO IRIS INSTALLATION & ADJUSTMENT
Pin 3
Pin 1
Pin 4
Connector
Cover
Iris Control
Cable
Connector
Automatic
Iris Lens
Heat
Shrinkable
Tubes
Pin 2
Rib
2. Attach the video-type auto iris lens to the lens mount on the front of the camera.
3. IMPORTANT: The minimum Plug the connector from the lens into the auto iris jack on the
side of the camera. The connector is polarized and can only be inserted into the jack one
way.
4. Apply power to the camera.
5. Set the E/I dip switch (rear side on the camera) to OFF position.
6. Set the A/I dip switch (rear side on the camera) to VIDEO position.
7. Adjust the focus ring on the lens for an optimum picture. If a picture is not Visible, set the
lens for proper exposure by adjusting the ALC (Automatic Level Control) and the level on
the lens. The ALC setting can range between AVG (average) or PK (peak). A midrange
setting is appropriate for most applications.
PIN NAME
1 Voltage +
2 Open
3 Video
4 Ground
WIRE COLOR
Red
_
White
Black
For ALC adjustments:
AVG To slow the reaction of the lens to changing light, set the range to the AVG
setting to average the video level from the camera. Use when there are bright
spots in the picture such as lights or glare from the sun.