Eldes ESIM384 - Page 195

195
195
EN
ESIM384 Installation and Conguration Manual v1.1
use wireless signal repeater (EWR2).
• The longer the antenna cable and the more the number of connections, the more the signal loss. Please be aware that if you use anten-
na’s extension cord or/and any other additional elements of wiring (cables,wires, etc.),then more antenna gain will be lost.
• We recommend that the best place for Alarm System installation is at the approximately estimated centre of all mounted Wireless de-
vices across your premises (house/at), and it’s not necessarily the centre of a room itself,i.e. positioning basically depends on the total of
the secured area. For a better visual perception, see the following picture:
Wall Wall
Wall Wall
Wall Wall
Wall
Wall
Wall Wall
Wall
Wall
Alarm
System
Alarm
System
Wireless
device
Wireless
device
• The angle at which the transmitted signal hits the wall is very important. The eective wall thickness – and with it the signal attenuation
– varies according to this angle. Signals should be transmitted as directly as possible through the wall.
Wall
Wall
Alarm
System
Wireless
device
• When using devices with an internal receiving antenna, the device should not be installed on the same side of the wall as the transmit-
ter. Near a wall, the radio waves are likely to be subject to interfering dispersions or reections. Consequently, the position of the antenna
has to be on the opposite or connecting wall.
Wall
Wall
Alarm
System
Wireless
device
• When using Alarm System with an external antenna, the ideal antenna installation place is a central location in the room. Where possible
the antenna should be at least 10 – 15 cm away from the wall corner or concrete ceiling.
Ceiling
Wall
Antenna
holding
Antenna
Min. 0,5 m
Min.
0,1 m
Intermediate ceiling