DN/CH Series Adjustments, SW4-1 Auto Gain Control

DN/CH SERIES ADJUSTMENTS

Refer to Figure 9 to adjust the IS310-DN or IS310-CH model.

Figure 9. Adjusting the IS310-DN/CH Series Camclosure

SWITCH SETTINGS

Locate the DIP switch. Then set the switches for your installation.

SW4-1: Auto Gain Control

The automatic gain control (AGC) adjusts the image automatically to compensate for changes in light levels.

Set SW4-1 to ON to enable AGC. Set it to OFF to disable AGC. The default setting is ON.

SW4-2: Backlight Compensation

The backlight compensation (BLC) feature compensates for backlit scenes by enhancing objects in the center of the scene.

Set SW4-2 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 it to OFF to disable backlight compensation. This is the default setting.

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 10 for more information.

Internal line sync disables the line lock and synchronizes cameras internally.

Set SW4-3 to OFF to use AC line lock. Set it to ON to use internal line sync. The default setting is OFF.

SW4-4: Flickerless

In certain lighting conditions, a flicker in the light source may affect camera operation. Flickering can be caused by a number of conditions, including the quality of the source power and the age and type of fluorescent bulbs and ballasts.

C3429M-A (1/08)