Руководство Пользователя для Vitek vtc-c680
8
EXTERNAL CONTROLS
SW 1. ALC / ESC (Default: ALC)
Used to select iris control mode. When set to ESC, camera operates in electronic
shutter control (ESC) mode and can be installed with a manual or fixed iris lens. ESC
mode is the most economic solution but may have some following disadvantages
comparative to ALC mode with auto iris lens:
shutter control (ESC) mode and can be installed with a manual or fixed iris lens. ESC
mode is the most economic solution but may have some following disadvantages
comparative to ALC mode with auto iris lens:
•
More smear and less clear image when shooting the very bright object.
•
Color rolling or video level hunting may occur under the florescent light when the
camera operates in ESC and INT modes (NTSC version only).
camera operates in ESC and INT modes (NTSC version only).
When set to ALC, camera operates in auto iris lens control mode and should be
installed with an auto iris lens. Auto iris lens is used for best quality video.
installed with an auto iris lens. Auto iris lens is used for best quality video.
SW 2. BLC (Backlight compensation) ON/OFF (Default: OFF)
If the subject you wish to view is too dim because of a bright background, set the BLC
switch to ON to compensate for the bright background. With BLC on, the background
brightness may saturate in some cases. This function may not operate properly if the
object is too small compared to the area of the background. This function can be used
with the linear shutter (EE or ESC) and be OFF with auto iris lens (Al lens or ALC
mode).
switch to ON to compensate for the bright background. With BLC on, the background
brightness may saturate in some cases. This function may not operate properly if the
object is too small compared to the area of the background. This function can be used
with the linear shutter (EE or ESC) and be OFF with auto iris lens (Al lens or ALC
mode).
SW 3. Flickerless ON/OFF (Default: ON)
Flickerless mode is useful in areas where AC main is 50Hz and TV system is NTSC
such like Japan or AC is 60Hz and TV system is PAL to reduce the flicker under the
florescent light. Where FL is set to ON, the low light sensitivity is down about 30%.
such like Japan or AC is 60Hz and TV system is PAL to reduce the flicker under the
florescent light. Where FL is set to ON, the low light sensitivity is down about 30%.
SW 4. AGC Turbo ON/ OFF (Default: OFF)
AGC is Automatic Gain Control
SW 5. Sharpness ON/OFF (Default: ON)
SW 6. Day-Night (ICR) ON/OFF (Default: ON)
DAY-NIGHT ON/OFF SW enables or disables the day-night mode. If set to ON, day-
night mode is enabled and camera determines to enter / exit NIGHT mode from / to
DAY mode automatically according to the scene illumination. When the scene
illumination is getting darker than a half video level, camera changes its mode to NIGHT
and removes its optical filter to get a higher video level and switches to B/W mode.
night mode is enabled and camera determines to enter / exit NIGHT mode from / to
DAY mode automatically according to the scene illumination. When the scene
illumination is getting darker than a half video level, camera changes its mode to NIGHT
and removes its optical filter to get a higher video level and switches to B/W mode.
In NIGHT mode, camera provides the real time B/W video and can accept the IR light.
When the illumination is getting brighter, camera returns to DAY mode and returns its
optical filter and switches to Color mode.
When the illumination is getting brighter, camera returns to DAY mode and returns its
optical filter and switches to Color mode.
If set to OFF, camera operates just like a normal camera and does not perform NIGHT
mode.
mode.