Datasheet

FEATURES
RF stereo signal reception
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Automatic channel search tuning control
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on the receiver (auto-tuning)
Signal reception even through walls
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Automatic on/off when put on/
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removed
Balance control left/right
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Low weight for great wearing comfort
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Lithium polymer battery for up to 9 hours
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of continuous operation
ARCHITECT’S
SPECIFICATIONS
The device shall be a portable radio frequen-
cy (RF) stereo receiver. The RF receiver shall
be for use with a companion RF transmit-
ter as part of a wireless RF transmission
system. The RF transmission shall utilize
frequency modulation (FM) technology
within an RF frequency range of 863.0MHz
and 865.0MHz; an automatic channel
search tuning function (auto-tuning) shall
be provided. The receiver shall incorporate
stethoscope-style earphones for head-worn
use; maximum sound pressure level at 1
kHz shall be 125 dB
spl
when worn. Audio
frequency response shall be 50 – 16,000Hz;
total harmonic distortion (THD) shall be
<1.0%. Signal-to-noise ratio shall be at 65
dB(A) (typical). The receiver shall incorpo-
rate an automatic power on feature when
worn by the user; auto power off shall occur
upon removal of the head-worn receiver.
Ear pad fit shall be self-adjusting to the
user’s ears to allow comfortable fit; ear pad
tips shall be replaceable. The receiver shall
include volume (level) and left/right balance
controls.
Continued on page 2
The RR 4200 is a lightweight RF
receiver offering a high quality audio
reception. The sound can be individu-
ally optimized by a balance and a
volume control. The included lithium
polymer battery allows up to
9 hours of continuous use.
TECHNICAL DATA
Modulation: ..............................................................FM, stereo
RF frequency range ................................................863.0 – 865.0 MHz
Frequency response: ..............................................50 – 16,000 Hz
Reception range: .....................................................up to 100 m
Max. sound pressure level (at 1kHz): ................125 dB
Total harmonic distortion (at 1kHz): ................. < 1 %
Signal-to-noise ratio: .............................................typ. 65 dB(A)
Operating time: .......................................................up to 9 h
Charging time: .........................................................approx. 3 h
Weight incl. battery: ...............................................approx. 53 g
DELIVERY INCLUDES
1 RR 4200 receiver
1 BA 300 rechargeable battery
2 alternative pairs of ear pads
1 manual
RR 4200 RF receiver