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58 | en
16 Alarm Information
16.1 General
16.2 Basic Alarm Response Mode
16.3 Auto Build Alarm Response Mode
16.4 Sequence and Display Alarm Response Mode
Bosch Security Systems, Inc.
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 (3)
modes appears below. Pictorial examples of the three (3) alarm responses are also
shown on the following pages.
The system can also be programmed with a wide variety of alarm response charac-
teristics using the optional LTC 8059/00 MCS package or the optional
LTC 8850/00 GUI Software package.
In the 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. Note that monitors and alarms can be armed and disarmed individu-
ally as required. Alarmed video automatically clears when the alarm input signal is
reset.
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 dif-
ferent 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. Note that monitors and alarms can be armed and disarmed indi-
vidually as required. Alarmed video will automatically clear when the alarm input
signal is reset.
This mode designates two monitors as alarm response monitors. Monitor #1 is the
DISPLAY monitor (also called a REVIEW monitor) and monitor #2 is the SEQUENCE
(or STEP) monitor. The first alarm appears on both monitors and additional alarms
begin to sequence at a 1 second rate on the SEQUENCE monitor. The DISPLAY
monitor holds 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" meaning the camera that enters an alarmed state second) is
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 man-
ually cleared; the presence of alarm video is not dependent upon the duration of the
alarm input signal to the system.
Instruction Manual
LTC 8600 | LTC 8800 Series
F.01U.127.393 | 2.0 | 2009.03
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