Vitek VTC-3516, Руководство пользователя

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6.5 DAY/NIGHT menu
To enter DAY/NIGHT menu, press
●
button at MAIN menu-1>DAY/NIGHT.
IMPORTANT ACTIVITY!!!
DAY->NIGHT and NIGHT->DAY operations must be examined and verified at the final
installation.
Block the lens for a few seconds for NIGHT mode then release and let it return to DAY mode.
If camera stays at NIGHT mode for more than 10sec, slightly decrease NIGHT
→
DAY THRES and
repeat the fore-mentioned steps.
If the scene is too dim or lens iris was adjusted too low (near close), it may not return to DAY.
DAY/NIGHT Default Descriptions
BURST OFF
BURST determines whether a color burst signal keeps output or is eliminated
when the camera switches to B/W.
If set to ON, B/W video signal contains color burst signal and is compatible
with the color equipment but shows the same resolution as color video.
If set to OFF, the color burst signal is removed from B/W video and shows better
resolution but it is possible that a compatibility problem may occur with the color
equipment.
DELAY
CNT
005
DELAY CNT is the time in seconds that the camera maintains its status before
Day
↔
Night switches. DELAY can avoid the unwanted/frivolous switching due to
short term lights such as light from a passing car.
DAY →
NIGHT
005
DAY → NIGHT is a threshold level which determines the switch from DAY to
NIGHT. A lower (higher) value makes the camera switch from Day to Night
at lower (higher) illumination.
If it stays in Day (Color) mode at night time, increase DAY
→
NIGHT threshold
value until it switches to Night.
Examine and verify Day/Night operation according to IMPORTANT ACTIVITY.
CAUTION If the gap between DAY
→
NIGHT and NIGHT
→
DAY is not
big
enough, camera may repeatedly switch from Day
↔
Night.