Table of Contents
Advertisement
3
DESIGNING AN ALARM SYSTEM
In order to obtain an alarm system which is perfectly functional and suited to
the task in question, the installation must be designed in advance, before pro-
ceeding with the operations described in this manual. In particular, one must
determine the number, type and location of the sensors in relation to their vari-
ous functions. We advise drawing a plane diagram of the building, specifying
the name and position of each device to be installed. This diagram will be a
great help during system configuration, for instance when one has to memorize
the names of the various devices.
3.1 - Distributing the protected areas in the home
The control panel can be programmed to monitor the entire living area, or only
parts thereof. It is therefore important to start by dividing the entire area into
three action groups (group A - B - C), and assign each room or area to one of
these 3 groups, logically and functionally.
For detached houses, the first approach is to divide the entire area into con-
centric circles (see fig. 1). In this system one assigns, as an example: the out-
doors detectors = group A; the perimeter detectors (doors and windows) =
group B; the indoors detectors = group C. This division enables one to use the
siren vocal messages to dissuade persons from violating group A even before
they have started to do so, or trip the siren alarm at the first attempt to break
in through the doors and windows (group B), or call the police only when the
indoors detectors (group C) are tripped.
Another approach is to divide the area into homogeneous blocks (see fig. 2). In
this system one assigns, as an example, the ground floor areas to group A, first
1
2
floor area to group B and the garages to group C. This division enables one,
for instance, to activate the garage alarm (group C) while using the rest of the
house normally.
3.2 - Positioning the alarm system components
To determine the locations of the system components, we recommend refer-
ring to fig. 3 and checking the following conditions:
• Control panel
- Control panels transmit and receive lower power radio signals (within regula-
tory limits), and must therefore be located in such a way as to enable effective
signal propagation. The following are therefore excluded: niches, metal cabi-
nets, reinforced concrete columns and walls; furthermore, the control panel
should not be installed in the vicinity of large metal surfaces or grilles, includ-
ing any such features as are built into the walls.
- The control panel is best located at the centre of the other devices.
- The quality of the received signal can be seen on the control panel's display
(see 9.5.1.3 "FIELD METER test") and if in doubt, we recommend running this
test before mounting the unit to the wall. With radio devices, even moving
them just a few tens of centimetres can significantly improve their transmis-
sion and reception.
- The control panels are equipped with a keyboard for programming them dur-
ing installation and for daily use of certain functions, such as arming/disarm-
ing the alarm. If you wish to use these functions, you must place the control
group B
group A
group C
group B
group A
group C
3
Advertisement
Table of Contents
