Vitek VTC-C770DN, Руководство пользователя

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VTC-C770DN
12
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 increase
„N→D THRES‟ and repeat the fore-
mentioned steps.
If the scene is too dim or the lens iris was adjusted too low (near close), it may not return to DAY.
DAY/NIGHT Default Descriptions
BURST OFF
BURST mode contains color burst signal when the camera switches to B/W.
ON mode maintains the same color signal in B/W so that the video signal
provides better compatibility with certain color equipment.
OFF mode removes the color burst signal B/W video and increase the total TV
lines.
DELAY
CNT
005
DELAY CNT is the time in seconds before
Day↔Night switches. DELAY can
avoid the unwanted/frivolous switching of short term lights such as light from
a passing car.
DAY→NIGHT
005
DAY→NIGHT
mode sets a threshold level to determine when switch from
DAY to NIGHT. Lower (Higher) value makes the camera switched from Day to
Night at lower (higher) illumination.
If the camera stays in Color at night time, increase
DAY→NIGHT
threshold
value until it just switches to Night.
CAUTION If the value
between DAY→NIGHT and NIGHT→DAY is
minimal, then camera may switch between DAY and NIGHT mode
repeatedly.
NIGHT→
DAY.
3
NIGHT→DAY
mode sets a threshold level to determine when to switch from
NIGHT to DAY. Lower (Higher) value makes the camera switched from Night
to Day at lower (higher) illumination.
If the camera stays in B/W mode during day time, decrease
NIGHT→DAY
threshold value until it switches to Day.
CAUTION If the value
between DAY→NIGHT and NIGHT→DAY is
minimal, then camera may switch between DAY and NIGHT mode
repeatedly.