Philips Allegiant LTC 8500 Series, Instructions For Use Manual

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44
ALARM INFORMATION
The ability to automatically switch video in response
to an external signal (usually a contact closure) is a
necessary feature in any video switching system.
The Allegiant system permits users with priority level
1 to select any 1 of 3 predefined alarm response
modes (via keyboard User Function 19). A
description of these three modes appears below.
Pictorial examples of the three alarm responses are
also shown on the following pages.
The system can also be programmed with a wide
variety of alarm response characteristics using the
flexible VersAlarm
TM
system. Refer to the TC8850
Graphical User Interface software, or the optional
TC8x59 Master Control Software manual for details.
Basic Alarm Response Mode
In BASIC alarm response mode, any or all of the
monitors can be selected as alarm display monitors.
Each alarm can then be armed to display its
camera(s) on any set of armed monitors. Multiple
alarms, on the same monitor, will sequence at a 1
second rate (2 seconds on the TC8500). Note that
monitors and alarms can be armed and disarmed
individually as required. Alarmed video will
automatically clear when the alarm input signal is
reset.
Auto-Build Alarm Response Mode
This mode uses a set of monitors as alarm display
monitors. All system monitors may be armed if
desired. Each triggered alarm will display its alarm
video on a different monitor, starting with the lowest
numbered armed monitor. If all the armed monitors
are already displaying alarm video, subsequent
alarms will build on the existing alarmed monitors;
and each monitor will sequence through its alarm
videos at a 1 second rate (2 seconds on a TC8500).
Note that monitors and alarms can be armed and
disarmed individually as required. Alarmed video will
automatically clear when the alarm input signal is
reset.
Sequence & Display
Alarm Response Mode
This mode designates two monitors as alarm
response monitors. Monitor #1 will be the DISPLAY
monitor (also called a "REVIEW" monitor) and
monitor #2 will be the SEQUENCE (or STEP)
monitor. The first alarm will appear on both monitors
and additional alarms will begin to sequence at a 1
second rate (2 seconds on the TC8500) on the
SEQUENCE monitor. The DISPLAY monitor will hold
the first alarmed camera video until manually
acknowledged through the keyboard. When the first
video is cleared from the DISPLAY monitor, the next
alarmed video ('next' being the camera which
became alarmed second) will be displayed until
cleared; operation continues in this manner. Note
that alarms can be armed and disarmed individually
as required. Note also that all alarms must be
manually cleared; the presence of alarm video is not
dependent upon the duration of the alarm input
signal to the system.
Alarm Activated Pre-Position
Alarm activated pre-position capability also exists in
each of the three alarm response modes. This
enables a pan/tilt/zoom equipped camera to
automatically position itself to a preprogrammed
scene as a result of an alarm signal. Note that the
pan/tilt and zoom on the camera must have the
necessary options for pre-position control. The
system default is to activate pre-position #16 of the
system camera receiving an alarm. Using the
optional TC8850 Graphical User Interface software,
or the optional TC8x59 Master Control Software
package, the response to alarms can be configured
as required by the user.