Page 12
INDUCTION LOOP
Loop perimeter coverage area
The magnetic field might be screened by the surface where the loop wire is
located. As a consequence, the signal picked up by the hearing aid of the
disabled passenger may result weak or altered. It is highly recommended to
avoid as much as possible any metal surface, whereas plastic or aluminum
materials do not affect the signal quality.
Connecting to power supply
The system must be connected to 12 Vdc (max. absorption 1,5 A).
Connect the 12 Vdc source to the
+12 Vdc
and
–
terminals, bewaring of the
polarity.
Switching on
The induction loop can be switch on by an external control or it switches on
automatically when the audio signal is captured.
Select the desired mode using the
A
switch shown in the picture at page 9.
Switch on by external control
Switch on only under audio signal
Remark: when the induction loop is on, the amplifier unit gets lit up.
In the case of external control:
Connect the external contact to the
On/Off
and
–
terminals.
Open the contact to switch on the system / close the contact to switch off the
system.
