Brochure

FEATURES
Infrared wideband receiver

Ideal for stereo and mono applications

Excellent signal transmission due to

carrier frequencies 2,3 / 2,8 MHz
Balance control left/right

Ergonomic volume control

Automatic on/off by when is put on/

removed
Moveable ear pads and low weight for

great wearing comfort
Lithium polymer battery for 12 hours of

permanent operation
ARCHITECT’S
SPECIFICATIONS
The wideband infrared stetho receiver
shall be capable of receiving on two carrier
frequencies of 2.3 and 2.8 MHz. The
receiver shall provide an automatic On/Off
feature whereby power to the unit will be
applied upon the user wearing it and
power will be removed when the user
removes it. The receiver shall provide two
audio output operating modes, mono or
stereo, and shall include a balance control
that attenuates the volume level either
on the left or the right side. The volume
control shall be easy to access for fingertip
control. The audio frequency response
shall range from 50 Hz to 16 kHz,
achieving a maximum sound pressure
level of 125 dB and less than 1% THD at
1 kHz with a S/N ratio of 75dBA.
The receiver shall include a rechargeable
lithium polymer battery providing
12 hours of operating time at full charge.
The weight including the battery shall not
exceed 2.4oz (68g). The battery shall be
Sennheiser BA 300, the receiver shall be
Sennheiser HDI 830.
The HDI 830 is a professional two channel
receiver. It works on carrier frequencies of 2,3 and
2,8 MHz for a high quality signal transmission.
It can be used for mono and stereo
applications. Ergonomic operating controls make
the receiver easy to use. The included BA 300
lithium polymer battery offers 12 hours of
battery life.
TECHNICAL DATA
Modulation: ...........................................................FM, stereo
Receiving frequencies: ........................................2.3/2.8 MHz
Frequency response: ...........................................50 - 16,000 Hz
Max. sound pressure level (at 1kHz) : ............. 125 dB
Total harmonic distortion (at 1kHz): ...............< 1 %
Signal-to-noise ratio: ..........................................typ. 75 dBA
Operating time: .................................................... up to 12 h
Charging time: ......................................................approx. 3 h
Weight incl. battery: ...........................................aprox. 68 g
Delivery includes: ................................................. HDI 830 stethoset receiver
BA 300 rechargeable battery
2 alternative pairs of ear pads
manual
quick start guide
HDI 830 infrared receiver