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20 C3426M-A (5/07)
DN/CH SERIES ADJUSTMENTS
Refer to Figure 10 to adjust the IS110-DN or IS110-CH model.
Figure 10.
Adjusting the IS110-DN/CH Series Camclosure
SWITCH SETTINGS
Locate the DIP switch. Then set the switches for your installation.
SW4-1: AGC (Auto Gain Control)
The AGC (automatic gain control) adjusts the image automatically to compensate for changes in light
levels.
Set to ON to enable AGC. Set to OFF to disable AGC. The default is ON.
SW4-2: BLC (Backlight Compensation)
The BLC (backlight compensation) feature compensates for backlit scenes by enhancing objects in the
center of the scene.
Set to ON to enable BLC. Use this setting if a bright backlight is present and the subject in the center
of the picture appears dark or as a silhouette.
Set to OFF to disable backlight compensation. This is the default.
SW4-3: Line Sync
When multiple cameras are connected to the same switching device, vertical roll may occur on the
monitor. AC line lock eliminates vertical roll by locking the frame rate to the power supply frequency.
Each camera output is synchronized to the power supply frequency. (Refer to
Vertical Phase
Adjustment
on page 22 for more information.)
Internal line sync disables line lock and synchronizes cameras internally.
Set to OFF to use AC line lock. Set to ON to use internal line sync. The default is OFF.