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Pelco Manual C1902M (11/96) 11
LENS TYPE
MANUAL IRIS
VARIABLE LIGHT CONDITIONS
STATIC LIGHT CONDITIONS
AUTO IRIS
A
B
• Turn Manual Iris
ring so iris is fully
open and set the Fo-
cus ring for ∞ (or dis-
tant object).
• Adjust Backfocus the
same as was done for Vari-
able Light conditions ex-
cept CCD iris is left in the
OFF position; therefore
there is no need to adjust
the LVL control; follow all
other steps, however.
CC4600 Series
CC3300 Series
CCD IRIS (ON)
Sync
AGC
Gain
BLC
White
Aperture
**With CCD Iris
OFF, the Video
Level control is
inactive
CCD Iris** (OFF)
Sync
AGC
Gain
BLC
White
Aperture
CCD IRIS (ON)
CCD IRIS**
AGC
BLC
TURBO AGC
L
H
IRIS LEVEL
L
H
VIDEO LEVEL
AGC
BLC
TURBO AGC
The purpose of backfocusing is to make the adjustments necessary for the picture to remain in focus throughout the camera‘s zoom
range, which is the case for instance, in motorized zoom, auto iris configurations. Manual Iris lens/camera combinations also need to
be backfocused. Follow the general instructions listed below to adjust backfocus appropriate to your camera/lens combination
NOTE: We are essentially referencing indoor lighting condi-
tions in each of the cases below. If you have occasion to use
fixed lenses in an outdoor setting, where lighting is much brighter
(not widely done with fixed lenses), you may need to filter the
light while performing these adjustments.
• Set the Iris/Video Level
control pot to the H posi-
tion.
• Adjust or set other cam-
era switches as needed.
• Move CCD Iris switch
to the ON position.
Generic example of best
setting for C mount lens.
Picture will be out
of focus on either
side of best setting
Best setting
Adjustment
Ring
• Adjust the C/CS
adjustment ring
for the best pic-
ture.
• Set all other
switches on the
back of the Camera
to the left (deacti-
vated or OFF), in-
cluding the CCD
Iris switch.
Information Box
Information Box
Lens/Camera Setup and Backfocusing
Manual
Iris
Manual
Focus
Generic Lens w/
Manual Iris &
Focus