Sennheiser HDI 302 User Manual download pdf (Page 2)

HDI 302

IR Audio Transmission Technology | Receivers

The two-channel and stereo versions of Sennheiser’s new stethoset generation

operate on the extremely reliable carrier frequencies 2.3 and 2.8 MHz. They are an

ideal choice for applications where reproduction quality is paramount, e.g. for ste-

reo music transmissions.

The most versatile of these receivers is the HDI 302, which can be switched between

stereo operation and reception on channel 1 or 2. This option is very convenient

when you are, for example, planning to set up a high-quality mini interpretation

system. You could transmit two translations on channels 1 and 2 and reinforce the

floor language via a PA system. The RI 300 product variant is a pure stereo receiver,

which cannot be switched between channels.

The HDI 302 and RI 300 are fitted with a squelch which mutes the audio output

when the IR signal becomes too weak, thus avoiding loud hiss. The receivers are

unit while remaining in the receivers. Optionally, the L 151-10 also charges spare

accupacks instead of an entire receiver. The charging unit is powered by an NT 92

plug-in mains unit. The L 151-2 charger charges two accupacks and is supplied com-

plete with mains unit. For larger, professional applications, the charging units can

be cascaded. Up to five L 151-10 are then powered via an NT 2013 (or NG 2013-UK)

plug-in mains unit.

HDI 302 two-channel stethoset receiver

Apertures

for altering

the frequency

response

On/off/volume

control

Two IR receiving

diodes (behind

special plastic

cover)

Channel selector

switch

Inserted BA 151

accupack

Channel selector switch of the HDI 302

Inserting the BA 151 accupack into the HDI 302

Alternative to charging a complete receiver: charging

of a spare accupack in the L 151-10 charging unit

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Sennheiser HDI 302 User Manual Page 2