Programming Overview; Alarm Receipt; Arming And Response; Display Indicators - American Dynamics AD2052 System Programming Manual

ALARMS - PROGRAMMING OVERVIEW
An ALARM is a signal generated by an external device that is
connected to an AD Matrix Switching System, either directly
or through an Alarm Interface Unit. External alarm signals can
be generated in different manners, such as opening a locked
door or window, or detecting a moving object. All types of
alarm signals are referred to as alarm contacts by the 2052.
Each external alarm contact is assigned an alarm contact
number (ACN) at the source. A maximum of 1024 alarm
contacts can be programmed for response by the 2052.

Alarm Receipt

External alarm contact signals are received by 2052CPM
control ports via RS-232 communication from Alarm Interface
Units and/or external computers emulating the alarm codes.
To process alarm contact inputs, each port that is connected to
an RS-232 alarm input device must be set for Port Use of
ALARM. Refer to the Ports menu, page 4-20, to set Port Use.

Alarm Arming and Response

All alarm response actions operate by associating (arming)
cameras and monitors with alarm contacts. When a monitor is
armed for an alarm contact, the camera video associated with
that alarm contact is displayed when the alarm is received.
Individual camera inputs or camera salvos, each with preset
scene and auxiliary action, may be automatically called to
monitors or monitor blocks in response to alarm receipt.
In order to provide automatic video callup to monitors, the
system cameras and monitors must be armed for alarm
response. This includes associating alarm contacts to both
cameras and monitors, and specifying an Arming Code for
each monitor.
Three steps are required to arm the system for alarm response
(these steps may be performed on any order).
1. Associate Alarm Contacts with Cameras:
Each alarm contact (ACN) must be associated with a
camera or a camera salvo for automatic callup when that
alarm is received. Refer to the Set Alarm Contacts menu,
page 4-12, to associate cameras and camera salvos to each
ACN. Each camera or camera salvo can be associated with
more than one ACN by this menu, allowing multiple views
of a scene to be called on receipt of an alarm.
When camera salvos are associated with ACNs for callup,
monitor blocks must be associated with the same ACNs to
display the full set of cameras defined in the salvo (see
notes on Salvos and Blocks, page A-5 of this Appendix).
2. Associate Alarm Contacts with Monitors:
Each alarm contact (ACN) must be associated with a
monitor or a monitor block for callup when that alarm is
received. Refer to the Monitor/Contact Access menu, page
4-26, to associate ACNs to monitors. Each monitor or
monitor block can be associated with more than one ACN
by this menu, allowing multiple alarms to be queued and
sequenced on a single monitor or block of monitors.
When ACNs are associated with monitor blocks, the ACNs
must be associated to the first monitor of a block only (see
Monitor Blocks, page A-5 of this Appendix.)
3. Arm the Monitors:
Monitors are armed using a Monitor Arming Code which
identifies the alarm Display method (Single, Block, or Dual
monitors), alarm Queuing method (Sequence or Hold), and
the alarm Clearance method (Instant, Auto, or Manual
clear) for each monitor. These Monitor Arming Codes are
defined on pages A-6 and A-7. Multiple alarm arming
methods may be used to provide flexible responses to
alarms. Refer to Arming Monitors, page 3-5, or the
Monitor menu, page 4-16, to arm monitors.

Alarm Display Indicators

During the period that an alarm is active and being displayed
on an armed monitor, the monitor Status Line shows the
uppercase word "ALARM". If a camera salvo is called in
response to an alarm, the monitor displaying the first camera of
the salvo shows the word "ALARM" in its Status Line, and the
monitors displaying the remaining cameras of the salvo show
the word "SALVO" in their Status Lines.

Alarm Audio Indicators

The 1678CM and 2078 keyboards can be programmed to
provide an audio tone when an alarm is received. When the
audio tone is enabled at a keyboard and a armed monitor is
called to that keyboard, the audio tone is sounded when the
associated alarm is first received. Refer to Audio Alarm
Programming, page 3-6, to enable or disable the audio tone.

Alarm Print Messages

When a 2052CPM RS-232 port is set for PRINTER Port Use, a
print format message is generated via this port for all alarm
events, including the receipt of the alarm contact and the
clearance of the alarm. The alarm message formats are shown
on page 4-21. Refer to the Ports menu, page 4-20, to set Port
Use.
A-3
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