Backlight Compensation
BLC OFF
- The camera Automatic Light Control (ALC) responds to the
average content of the entire video picture.
BLC ON
- The camera ALC responds pre-
dominantly to the center of the picture, shown
by the diagram. If an object of interest falls
inside the BLC area, its visibility will remain
relatively constant even if the background illu-
mination varies.
Fitting and adjusting the lens - LTC 0240 only
To fit the lens, hold the camera head with its front facing downwards and
then:
a.
Remove the dust cap from the lens mount.
b.
Ensure that the back-focus lever (A) is loose and screw the lens into the
CS-mount.
c.
Set the lens distance to infinity.
d.
Screw the lens “in” or “out” until the picture is sharp (object distance
should be more than 15m).
e.
Tighten the lens by locking the back focus lever (A).
CAUTION
Check that the lens protrusion behind the rear face of the back flange does
not exceed 6 mm and that the diameter of the back flange exceeds the
inner diameter of the CS-mount, i.e. 27 mm.
11
BLC area
A
Summary of Contents for LTC 0240
Page 1: ...Digital Color Cameras LTC 0240 LTC 0242 LTC 0243 Philips Communication Security Systems Eng ...
Page 5: ...5 Fig 1 ...
Page 6: ...6 Fig 2 ...
Page 7: ...7 Fig 3 mm inches ...
Page 13: ...3922 988 85113 98 35 1998 Philips Electronics N V Data subject to change without notice ...
Page 14: ...14 ...
Page 15: ...15 ...
Page 16: ...16 ...
