User's Manual

SIDEP
Page 9 of 19
2. GENERAL INSTALLATION
2.1 IMPLEMENTING ANTENNAS.
The Transceiver antenna (MONO) selection of location shall be a function of
the stores layout. The rear field is wider on transceiver system therefore
removes all furniture and hangers likely to contain anti-theft tags close to the
set-up, a minimum distance is recommended between antennas and shelf in
retail (1.5 to 1.8m).
Figure 2.1.
Detection zone
IMPORTANT NOTE
Prior to commencing the work (threading of cables, marking of locations, floor
drilling for antenna attachments…), perform a walkabout test on site in order to
assess the environmental impact. Depending on test outputs, the permanent
location of the antennas will be decided upon jointly with the client. Reduce the
antenna spacing whenever the operational environment does not provide
satisfactory results. Once the cabling is embedded and antennas are anchored
to the ground, it becomes a very difficult/costly and even an impossible job to
change antenna locations. Hence, this walkabout on site test is of a major
importance before commencing any installation work. The walkabout test will
make it possible for the fitter/installer to figure out any interference arising from
the environment. (subsection Interference Sources refers).
2.2 INTERFERENCE SOURCES.
Mains power generates interferences because of numerous parallel connected
appliances and devices (motors, spot lights, fluorescent lighting, etc…) and