Cardin Elettronica S449 Mode D'emploi page 12

Memory module (M1)
The module is furnished with a non volatile EEPROM type memory and contains the transmitter codes and
allows you to memorise up to 300 codes (300 channel buttons). The programmed codes are maintained in
this module even in the absence of power.
Receiver antenna installation
'Range' is intended to mean the working distance, measured in free space, between the receiver and the
transmitter with the antenna installed. The range is therefore closely linked to the technical characteristics of
the system (power and sensibility) and varies according to the characteristics of the site in which the system
is located. It therefore follows that to obtain the best results from the radio control the receiver and antenna
installation sites should be carefully chosen. It is good practise to position the receiver away from computer
systems, alarm systems and other possible sources of disturbance.
A bad choice of positioning could compromise the performance of the receiver.
Antenna
The installation of the antenna is fundamental, connected to the receiver it represents the reception point
for the radio control. When installing the antenna the following points should be observed. A tuned antenna
using a coaxial cable RG58 (impedance 50Ω) with a maximum length of 15 m. must be installed. The antenna
should be positioned out of doors in the highest possible point, visible and away from metal structures.
Transmitters
The transmitter is pre-coded and is fitted with an integrated circuit which is programmed in the factory
with a unique identification number. All the code parameters are contained in this integrated circuit (external
memory modules are not required) thus making code management more reliable and the system more
secure. The transmitter has an automatic shut down mechanism which cuts in after at least 20 seconds of
continuous use (this limits battery consumption).
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