Setup - Vbc Thresh - BridgeTech VB20 User Manual

6.17.8 Setup - VBC thresh.

The VBC error second thresholds are used by the VideoBridge Controller (VBC) to issue
VBC specific alarms. The VBC will raise an alarm when the number of error seconds
exceeds the error seconds threshold. The VBC thresholds are only relevant when a
VideoBridge Controller is part of the monitoring system.
The reason for using error second thresholds is to avoid alarms that toggle on and off,
which for a large monitoring system might otherwise lead to an unintelligible user
interface. The VBC thresholds will allow masking of minor error incidences thus
resulting in a control system GUI that presents persistent alarms only.
The VBC error second thresholds are specified as the number of seconds affected by
an error situation. These thresholds refer to a monitoring window of one hour, meaning
that if the number of error seconds summed over any one-hour period exceeds the
associated error second threshold an alarm will be raised by the VBC.
If a monitoring window different from one hour is selected by the VBC user, the
threshold values will be automatically recalculated to proportional values.
In the 'VBC threshold presets' table the 'Refs' column shows how many streams are
associated with each VBC threshold template.
By clicking the Add new threshold button the user will enter a VBC thresholds edit
view enabling definition of a new threshold template. It is possible to copy or delete an
existing threshold template by clicking the Duplicate selected or Delete selected
button respectively. To edit a highlighted threshold template the Edit selected button
should be clicked.
PROBE USERS' MANUAL VERSION 5.0
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