smxi radio receiver
Description of the product
The special thing about this type of radio receiver is that the
recognition code is different for each transmitter (it also changes
every time it is used).
Therefore, in order to allow the receiver to recognise a determined
transmitter, the recognition code must be memorised. This operation
must repeated for each transmitter required to communicate with the
control unit.
Up to a maximum of 256 transmitters can be memorised in the receiver.
No one transmitter can be cancelled; all the codes must be deleted.
- For more advanced functions use the appropriate programming unit.
During the transmitter code memorisation phase, one of these
options may be chosen:
Mode I. Each transmitter button activates the corresponding output
in the receiver, that is, button 1 activates output 1, button 2 activates
output 2, and so on. In this case there is a single memorisation phase
for each transmitter; during this phase, it doesn’t matter which button
is pressed and just one memory sector is occupied.
Mode II. Each transmitter button can be associated with a particular
output in the receiver, e.g., button 1 activates output 2, button 2
activates output 1, and so on. In this case, the transmitter must be
memorised, pressing the required button, for each output to activate.
Naturally, each button can activate just one output while the same
output can be activated by more than one button. One memory
section is occupied for each button.
Installing the aerial
The receiver requires an ABF or ABFKIT type aerial to work properly;
without an aerial the range is limited to just a few metres. The aerial
must be installed as high as possible; if there are metal or reinforced
concrete structures nearby you can install the aerial on top. If the
cable supplied with the aerial is too short, use a coaxial cable with 50-
Ohm impedance (e.g. low dispersion RG58), the cable must be no
longer than 10 m.
If the aerial is installed in a place that is not connected to earth
(masonry structures), the braid’s terminal can be earthed to provide a
larger range of action. The earth point must, of course, be local and
of good quality. If an ABF or ABFKIT aerial cannot be installed, you
can get quite good results using the length of wire supplied with the
receiver as the aerial, laying it flat.
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