Tyco ADC 660P - Manual (Page 13)

Hi-Res. B/W camera instruction manual
ADC 660N and ADC 660P
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13
11. ALC Level Adjustment Potentiometer for DC Drive Lens
This potentiometer is used only if the camera is fitted with a DC drive Auto Iris lens.
It is used to control the amount of light striking the CCD image sensor.
Turn off AGC. With a brightly lit scene adjust LENS-IRIS control for a clean 1 VPP
video level with no blooming. Turn AGC back on after adjustment is complete.
LEVEL
LENS-IRIS level control
L H