Vista VBC28V12DN960H, Руководство по установке, Страница: 19 / 23

18
DEAD PIXEL CORRECTION
It is perfectly normal for a camera CCD to have what is known as ‘dead’, ‘hot’
or ‘white’ pixels, develop over time and on occasion and these can be
noticeable on the viewed image. These can be masked easily without affecting
the quality of the image, with the DPC function. To access this, push and hold
the joystick LEFT for 5 seconds, then cover the lens and push ENTER (central
push on the OSD tact switch), then follow the instructions on the screen.
Please note:
If there are over 65 dead pixels the camera will not run the DPC
function
If the temperature is over 70
0
C this function will not run.
LENS ADJUSTMENT
2.8
– 12mm
5
– 50mm
Image Size 1/3
’’ CCD
Focal Length
2.8-12mm 5% 5-50mm 5%
Aperture Ratio
1 : 1.4 5% 1 : 1.4 5%
Horizontal
Field of View
2.8mm: 81.2
12mm: 22.6
5mm: 51.28
50mm: 5.5