Справочник Пользователя для Pelco MC3810-2
6
Pelco Manual C1905M (10/99)
BACKFOCUS ADJUSTMENT
1.
Set the CCD-IRIS switch on the rear of the camera OFF.
2.
Set the iris wide open and the focus on infinity or a distant object. If you have an auto
iris lens, use a neutral density filter or other means to decrease the amount of light so
that the iris will open as wide as possible.
iris lens, use a neutral density filter or other means to decrease the amount of light so
that the iris will open as wide as possible.
3.
Turn the focal length adjustment ring for the best picture.
4.
If you have a zoom lens, zoom to a close object and adjust the lens controller or focus
for the best picture. Repeat steps 2-4 until the lens remains in focus throughout the
zoom range.
for the best picture. Repeat steps 2-4 until the lens remains in focus throughout the
zoom range.
5.
If you have a lens with a manual iris, set the CCD-IRIS switch ON.
VERTICAL PHASE ADJUSTMENT
The vertical phase adjustment is used only when using more than one camera. If cameras
are not synchronized to the AC line, switching between cameras may produce what ap-
pears to be roll on the monitor.
are not synchronized to the AC line, switching between cameras may produce what ap-
pears to be roll on the monitor.
To adjust the vertical phase, turn the V-PHASE screw on the rear of the camera (while
switching as rapidly as possible between two camera views) until the switching is clean and
there is no vertical roll or flip.
switching as rapidly as possible between two camera views) until the switching is clean and
there is no vertical roll or flip.
INCIDENT LIGHT LEVEL ADJUSTMENT
If the picture is too dark or if the picture’s highlights are extremely overexposed, adjust the
LEVEL adjustment on the rear of the camera. The adjustment can only be used for a
manual iris lens (CCD-IRIS switch is ON) or DC-controlled auto iris lens.
LEVEL adjustment on the rear of the camera. The adjustment can only be used for a
manual iris lens (CCD-IRIS switch is ON) or DC-controlled auto iris lens.
1.
Turn toward L (low) to make the picture darker.
2.
Turn toward H (high) to make the picture brighter.
BACKLIGHT CONTROL ADJUSTMENT
You can compensate for backlight conditions by turning the BLC (Backlight Control) adjust-
ment screw on the rear of the camera. When using this unit under backlight conditions, turn
the BLC adjustment screw toward AV. The adjustment can only be used for a manual iris
lens (CCD-IRIS switch is ON) or DC-controlled auto iris lens.
ment screw on the rear of the camera. When using this unit under backlight conditions, turn
the BLC adjustment screw toward AV. The adjustment can only be used for a manual iris
lens (CCD-IRIS switch is ON) or DC-controlled auto iris lens.
TROUBLESHOOTING
The following conditions may be observed and are not necessarily a fault of the camera.
Vertical smear
This may occur when viewing a bright object or an intense reflection.
Patterned noise
A fixed pattern may appear over the entire monitor screen when the camera is operated at
a high temperature.
a high temperature.
Jagged picture
This becomes noticeable when viewing stripes, straight lines, or similar patterns.