Technical Manual

11
LENS
This turns the auto iris feature on or off. The iris controls the amount of light entering the lens, or exposure. This requires the camera
to be equipped with an automatic lens. At present, this option is only available on box-type cameras. With such a lens attached, you
can select;
AUTO IRIS
TYPE DC
MODE AUTO
SPEED 080
RETURN
SHUTTER/AGC
The Shutter setting controls how much light is used to “expose” each frame while AGC, or Automatic Gain Control “amplifies” the
image to show more detail. As a general rule, the AUTO setting will be sufficient as the camera will automatically adjust to changing
light levels.
In the rare situation where automatic settings aren’t ideal, you can chose to adjust the automatic settings or manually set the values
by selecting AUTO or MANUAL respectively.
TYPE - DC (direct current) or VIDEO (video control) of the
iris.
MODE - AUTO (automatically adjusts), OPEN (always
opened) or CLOSE (always closed).
SPEED - When the mode is set to AUTO, this controls the
sensitivity of the lens with a value ranging from 0 to 255.
AUTO SETUP
HIGH LUMINANCE
MODE SHUT
BRIGHTNESS 024
LOW LUMINANCE
MODE AGC
BRIGHTNESS X0.50
RETURN
MANUAL SETUP
MODE SHUT+AGC
SHUTTER 1/60
AGC 6.00
RETURN
Auto Setup
The image at right shows the default settings. In this menu, you
can adjust how the camera behaves in brightly lit or dark situations
by adjusting the Shutter from 0-255 with zero being the darkest.
The AGC amplification can be turned off or it can be set from x0.25
to x1.00 but the higher the amplification, the higher the “noise” in
the image.
Manual Setup
The shutter speed can be set from 1/60 second to 1/10,000
second going from lighter to darker with the higher speed. AGC’s
value can range from 6.00 to 44.8.
If there is a video monitor within the camera’s field of view, setting
the shutter to 1/100 (NTSC) or 1/120 (PAL) will reduce the flicker
on the screen.