Channel Selection; Pilot Tone - switel BCC 47 Mode D'emploi

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A few seconds after the device has no longer received acoustic
signals, the receiver automatically switches back to energy save
mode. The Baby Sleeping icon appears in the display and the
back−lighting switches off automatically.

3. Channel selection

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Each of the units is equipped with a channel selector switch
(OFF, CH1 or CH2) for the transmission of the radio signals. If
reception is poor or interference occurs in the radio signals,
select the other channel for optimum transmission.
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The channels selected are indicated at the top right of the
display.
4. Optimising the sensitivity of voice−activation
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Set the sensitivity control to the required position on the
transmitter unit.

5. Pilot tone

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Interference−free transmission is considerably improved by the
provision of an inaudible pilot tone. The pilot tone is transmitted
together with the acoustic signal from the transmitter unit to the
receiver unit. The receiver unit only switches to
receive when an acoustic signal is transmitted
from precisely this transmitter unit.
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The are 16 different pilot tones available
for selection by the user which can be set
by means of the DIP switches (in the
battery compartment).
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Ensure that both units are set to the same channel.
Ensure that both units are set to the same pilot tone. If your
receiver receives external signals despite this function,
change the channel or pilot tone.