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iris control if the picture is reproduced too
dark or too bright:
If a DC lens is used, adjust the optimum
video level by turning the trimming control
LEVEL (4) with a small screw driver.
For AI lenses the level control for the
video signal is located at the lens.
8.1 Backlight compensation (BLC)
The object to be monitored will be underex-
posed in case of backlight, i. e. light that falls
directly or diagonally upon the front of the
lens. This also applies if the object is in front of
a very bright background. The backlight com-
pensation (BLC) prevents this effect. To switch
on this function, set the switch BLC (9) to po-
sition ON.

9 Specifications

9.1 Black / white cameras TVCCD-450
and TVCCD-460
Image sensor: . . . . . 8.5 mm CCD chip (
Synchronization: . . . hor. 15 625 Hz, vert. 50 Hz
Number of pixels
TVCCD-450: . . . . hor. 500 x vert. 582
TVCCD-460: . . . . hor. 752 x vert. 582
Resolution
TVCCD-450: . . . . 380 lines
TVCCD-460: . . . . 570 lines
Electronic shutter: . . automatically
Minimum illumination: 0.1 lux at lens 1:1.2
S/N ratio: . . . . . . . . . > 45 dB
Video output: . . . . . . 1 Vpp/75 Ω
Ambient temperature: 0 – 40 °C
GB
1
/
")
3
1
1
/
/
s
50
100 000
17

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