Xtralis ADPRO Presidium Mini, Инструкция по установке и эксплуатации

Страница: 70 / 102

Installation and User Manual ADPRO Presidium Mini by Xtralis
60
Doc. 14294_02
2. Once all settings are complete, select Next .
The following screen is displayed.
Figure 46: Video Monitoring
Video Monitoring
Video Monitoring enables the generation of an alarm when the video signal is tampered with or a
camera develops a fault.
Contrast Monitoring
The Contrast Monitoring feature is provided as a check that the contrast of the camera image is
acceptable. The settings allow detection of unusually low contrast levels.
A contrast level indicator may be displayed on the video output, refer to Display All Tracks on
Video Output on page 49 for instructions.
A contrast alarm is triggered if low contrast is detected in a larger percentage of the image than
specified in the Contrast Threshold %.
Note: The contrast must be below the threshold for the entire duration defined in the
Minimum Time to Cause Activation setting for a contrast alarm to be generated.
A low contrast alarm will be generated for both the following situations:
• the camera is ‘bagged’ by placing an opaque material over the lens, causing the image to
go dark
• the camera has a very bright light shone into the lens, causing the image to flare and
‘whiteout’
Note: A contrast alarm will not be generated if the channel is isolated.