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3. Raccordement et montage
Supprimer le codage
Appuyer sur la touche C1 de REC 1 / REC 2
(REC 11) pendant environ 10 secondes. La LED
C1 s’allume et s’éteint après 3 secondes.
3.5. Informations générales relatives
à la transmission radio
Les signaux radio consistant en des ondes
électromagnétiques, le signal est atténué
lorsqu’il passe de l’émetteur au récepteur
(limitation de portée). A cela viennent s’ajouter
d’autres facteurs perturbateurs tels que les
objets métalliques présents dans les murs, les
feuilles métalliques destinées à l’insonorisation,
etc. Apparaît alors une zone morte (voir tableau
ci-contre).
Autres sources de perturbations
Les appareils fonctionnant également avec des
signaux haute fréquence, les ordinateurs ou
les transformateurs électroniques, constituent
également des sources de perturbations. L’écart
minimal à observer avec ces appareils est de
0,5 m.
Transmission
Attention!
La présence d’humidité dans les matériaux ralentit
la transmission!
Matériau sec Epaisseur du
matériau
Transmission
Bois, plâtre,
plaques de
carton plâtre
< 30 cm 90-100 %
Briques de
terre cuite,
plaque de
contre plaqué
< 30 cm 65-95 %
Béton armé < 30 cm 10-70 %
Métal, treillis
métallique,
aluminium
< 1 mm 0-10 %
Métal,
alluminium
feuilleté
< 1 mm 0 %
POUR PROFESSIONNELS
7


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