4 Description of External Controls
4.1 VKC-1370 (Art. No. 92537)
Dip Switch Description setting & key functions
No.
Function
Default
ON
OFF
ALC /ESC
OFF
ESC mode
Electronic shutter mode
ALC mode when an auto iris lens is
installed.
BLC
OFF
BLC ON
Back light compensation is enabled.
BLC OFF
Back lit compensation is disabled.
3
Flickerless
OFF
Flickerless mode is enabled.
Flickerless mode is disabled.
4
Day / Night
ON
Day-Night mode is enabled.
Firmly connected to colour mode
SW 1. ALC / ESC (Default: OFF)
Used to select iris control mode. When set to ESC, camera operates in electronic shutter control (ESC) mode and can
be installed with the manual or fixed iris lens. ESC mode is the most economic solution but may have some following
disadvantages comparative to ALC mode at auto iris lens:
• More smear and less clear image when shooting the very bright object.
• Colour rolling or video level hunting may occur under the florescent light when the 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 either type of the auto
iris lenses (Video-drive type or DC-drive). 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).
SW 3. Flickerless ON/OFF (Default: OFF)
Flickerless mode is useful in areas where AC mains 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%.
SW 4. 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.
Содержание VKC-1370
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