5
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.
G. For Level adjustments:
1. 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.
2. Set the back focus of the camera before the final
adjustment of the video level.
H. If the auto iris has a gain adjustment:
1. If the lens oscillates between open and closed under
bright lights, slowly turn the gain adjustment counter
clockwise until the oscillating stops.
2. Increase the light getting to the camera by adjusting the
level control and re-adjusting the gain control as
necessary.
3. Reset the level control as noted in step E.
1.6
BACK FOCUS ADJUSTMENT
For best results, perform back focus adjustments at night or
while using a #6 or #8 welder’s glass in front of the lens. The
focus of the camera will change slightly if the camera iris was
adjusted on a light scene, then changes to a dark scene.
However, the camera will remain in focus if the iris was focused
on a dark scene and the scene lightens.
A. The lens should be mounted on the camera, then apply
power.
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