Pelco IS90 manual DN/CH/C Series Adjustments, Switch Settings

DN/CH/C SERIES ADJUSTMENTS

Refer to Figure 13 to adjust the IS90-DN, IS90-CH, or IS90-C model.

Figure 13. Adjusting the IS90-DN/CH/C 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 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.

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 21 for more information.)

Internal line sync disables 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 is OFF.

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