5.
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.
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.
PK To increase the speed of the lens reaction to the changing light, set the lens
adjustment to PK so the lens will adjust to the brightest or peak object in the video.
Use this setting if you want to see the brightest object and not the background
objects.
For Level adjustments:
Adjust the level control for the best picture during the day.
A night adjustment may not provide the proper setting for controlling the light during
the day.
6.
Set the back focus of the camera before the final adjustment of the video level.
7.
If the auto iris has a gain adjustment and the picture 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 re-adjusting the gain control.
• DC auto IRIS lens installation & adjustment
1.
Solder the lens control wires to the connector supplied with the camera.
Pin
Name
Wire Color
1
Damp Coil -
Blue
2
Damp Coil +
Red
3
Drive Coil +
White
4
Drive Coil -
Green
10
2.
Attach the DC-type auto iris lens to the lens mount on the front of the camera.