4
1.4
MANUAL IRIS LENS ADJUSTMENT
When using the manual Iris lens, turn the iris to the OPEN
position and adjust the manual iris for the appropriate range.
Adjust during the brightest conditions, opening the lens without
saturating the picture. Set the EI switch to ON. Adjust the lens
opening for the minimum F-number yielding a good picture under
the brightest scene conditions.
The manual iris is used in indoor applications where lighting from
windows can considerably affect the light level of the room.
1.5
VIDEO-TYPE AUTO IRIS LENS INSTALLATION AND
ADJUSTMENT
The KC-2A camera supports video-type auto iris lenses to adjust
for changing light levels. Perform the following steps to install and
adjust a Video-type auto iris lens.
A. Thread the video-type auto iris lens on to the lens mount.
B. Connect the lens control wiring to the three-position terminal
block on the back of the camera. The following diagram
illustrates the Pin connections. Red, white, and black are the
most common colors used for wiring on video-type auto iris
lens.
A. Pin
A. Name
A. Wire
Color
B. +B
B. Voltage
+
B. Red
C. VI
C. Video
C. White
D. G
D. Ground
D. Black
C. Set the EI switch on the back of the camera to OFF.
D. Apply power to the camera.
E. 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 Level on the
lens. The ALC setting can range between AVG (average) or
PK (peak). A mid-range setting is appropriate for most
applications.
F. For ALC adjustments:
Содержание KC-2A
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