User manual | Humantechnik Catalogue

HUMANTECHNIK induction loop systems
In Australia, as in many countries throughout the world,
1 in 5 people, or 20% of the population have varying
degrees of hearing impairment. This ratio is predicted to
reach 25%, or over 5 million Australians in the very near
future due to the effects of population aging and severe
noise pollution.
None of us can wait for the time when we are given
headphones to listen to a live concert, however, the scary
thing is that this could happen with the threat of new
OH&S issues surrounding the music industry.
Group Technologies has the product range and
expertise to assist you in this market.
Contact us for further information and advice on
dealership opportunities
4
induction loop systems
HUMANTECHNIK Induction Loop Systems
THE LEGISLATION
The Disability Discrimination Act (DDA 1992) while complex and
detailed in its principles, is very concise in its stated position. In brief
it clearly states that it is illegal to discriminate against those having any
kind of impairment. This of course includes hearing impairment.
The act is directed toward all classes of building including educational
facilities, hospitals, aged care facilities, conference venues and a host
of applications, including transport. In simple terms failure to meet
requirements of the act can lead to litigation against the property owner, or
developer, or business principals. It is wide in scope while clear in intent.
The Act says that service providers may not discriminate against a
hearing impaired person by refusing to provide a service or offering
a service of a lower standard or on less favourable terms, on the
grounds of their hearing impairment. Service providers must also
make adjustments to the way in which they provide goods or
services to enable hearing impaired people to access them.
Additionally, Building Codes Australia standard 2007 states that
80% of any public space containing Public Address Systems
should cater for the hearing impaired. The Standard covering
Hearing Impaired people is also covered under AS 60118.4
For many years now, there has been a tendency for Building Owners and
Managers to overlook the needs of the hearing impaired, however, this is
about to change with the adoption of the revised standard. This happened
in the same manner as with access for the disabled to buildings of services.
The installation of Hearing Augmentation equipment, should,
in theory, provide the best possible outcome when obtaining
services for people using an Assistive Listening device (ALD)
In a majority of installations, the best possible system is
not provided by those required to do so because:
• It is not considered a priority in budgeting
• It is out of site – out of mind as far as the Building Owners are concerned
• The end user is never considered with any degree of concern.
This, in itself is discriminatory, as the person with the hearing
impairment is as much entitled to hear, or obtain services
simply and without discrimination as any other person.
• Quite often Consulting Engineers and Builders have limited
understanding of the function of an Induction Loop System,
or the Standard covering its installation and application.
• Furthermore the installer often has little or no knowledge
of the principles involved when installing equipment and
ensuring that it fully complies to required standards.
HUMANTECHNIK is a pre-eminent German
manufacturer which began operations in 1984
and is dedicated to manufacturing Assistive
Listening products for the hearing impaired.
HUMANTECHNIK manufactures three types
of systems, these being Induction Loop
amplifiers, RF and Infrared systems.
HUMANTECHNIK choosing the right amplifier for the job
Reception / Counter:
Soundshuttle / LA-215 / LA-60
TV Rooms / Nursing Homes / Living
Rooms:
LA-215 / PROLOOP C 9 / 10
Conference Rooms / Theatres:
PROLOOP C, PROLOOP DCC
Very Large Induction Loop Systems:
PROLOOP DCC or LOS system
Systems with Little Overspill:
LOS systems
Portable Induction Loop System:
Soundshuttle loop system kit
Loop position: In order to create a uniform magnetic field,
the distance between the loop level to the normal listening
level should be between approx. 1.2 and 2 metres.
The position and size of the loop can also be determined by the position
of the listening area (often much smaller than the size of the room) or the
position of the microphones as well as other technical equipment that
affects the magnetic field. If possible, avoid using dynamic microphones in
combination with induction loop systems. If they cannot be avoided, they
must be positioned outside the loops. The distance between the loop and
the dynamic microphone should be at least half the diameter of the loop.
Using a condenser or electret microphone usually produces better results with
respect to interference or acoustic feedback. A microphone with a high-quality,
insulated connection cord also generally reduces magnetic feedback. Reduce
the area of the loop! The connection wire to the loop must be firmly twisted or
closely parallel. Make a test installation. Always test the loop system to make sure
that it is powerful enough, that the overspill does not cause any problems, etc.
Adjust the height of the loop (1.2 to 2.0 m) to provide for the greatest possible
range with the smallest amount of overspill. Conducting materials, such as
reinforced concrete, can increase or decrease the area covered by the loop.
The magnetic field strength is often increased outside the loop, while it is
decreased inside. This fact considerably increases the risk of acoustic feedback.
In a new building, you should try to install an LOS system. The LOS system
makes it more difficult for the current to connect with large metal objects.
Pay particular attention to metal frames. Do not fasten the loop
to structural elements made of metal or similar objects
Recommended loop wire cross-sections:
Loop area Single loop(recommended cross-section)
300 - 600 m²
4.0 mm²
200 - 300 m²
4.0 mm²
150 - 200 m²
2.5 mm²
70 - 150 m²
1.5 mm²
< = 70 m²
1.5 mm²
The cross-sections recommended here can be used for most induction loop
systems. For special solutions, please contact Group Technologies.
Group Technologies Full-Line Product Catalogue No.1
Telephone: (03) 9354 9133 • E-Mail: [email protected] • www.grouptechnologies.com.au
5
induction loop systems
SOUNDSHUTTLE compact, portable induction loop system: choice of three colours
technical data
• Dimensions (HxWxD):
185 x 170 x 65mm
• Weight: 420 g
• Microphone sensitivity:
bis 60 dB ± 3 dB
• Primary power supply: 100-240
V, 50-60 Hz AC power cord
• Secondary: 15 V DC or using
built-in 12 V NiMH battery
• Output power: Max. 7W
The »soundshuttle« is a compact, portable
induction loop system for applications over
short distances, at reception desks, for example,
at information counters or in sales areas.
Positioned between the people speaking to each
another, the »soundshuttle« uses an integrated
microphone to pick up the sound and transmits the
corresponding inductive signals via the integrated loop.
Power can be provided by the power cord included with
the system or by the integrated rechargeable battery.
• A 4205 Black
• A 4206 Yellow
• A 4207 Beige
THE COUNTER LOOP amplifier
The Counter Loop is a mains powers
loop amplifier that provides a cost
effective solution for Counters or small
rooms of up to 25m2. The unit comes
supplied with a microphone and loop.
Additionally, the amplifier has two
microphone inputs as well as line
level input, so it is possible to have
two input sources operating at once.
technical data
• Dimensions: 185mm x
87mm x 45mm
• Weight: 220 g
• Mounting: 2 x fixing holes to
allow for screw mounting
• Audio Inputs: 2 x 3.5mm jack
sockets with phantom power
for Unbalanced Electret Mics
• Microphone Sensitivity: - 62db + 3db
• Power supply: 15v DC
@1 A Maximum.
LA-215 induction loop amplifier
INDUCTION LOOP PAD pad
The LA-215 is able to supply living quarters or small conference rooms
up to approx. 50m² in size with inductive audio signals via the loop
connected. The system includes a 37-m long induction loop wire. In
addition to settings for basic volume and tone, the digitally controlled
Induction loop pad for the Counter Loop/LA-215 (A-4910)
induction loop amplifier uses Automatic Gain Control to
stabilise the volume for fluctuating input levels. The device is
able to accommodate the connection of two audio sources. For
example, it is possible to add a Microphone to allow for the
mixing of background noises as well as audio to be transmitted.
The desired source can be selected at the touch of a button.
The »pad« contains a small loop. It is connected
directly to the LA-215 or Counter Loop induction
loop amplifier and placed under the seat cushion or
behind the back of a chair to provide a convenient
alternative to a 37-m long loop wire when the signal
transmission is limited to a very small area.
Technical data
• Dimensions: (HxWxD): 42 x 180 x 140 mm
• Weight: 905 g
• Colour: Silver-metallic
• Power supply: 240 V AC 50 Hz 20 VA
• 1 microphone cord (4 m long) and 1 cord for direct connection
• 37-m single-wire loop and loop clips, Scart/Phone Leads
Group Technologies Full-Line Product Catalogue No.1
Telephone: (03) 9354 9133 • E-Mail: [email protected] • www.grouptechnologies.com.au
6
induction loop systems
BA-200 induction loop amplifiers for coaches
PROLOOP C induction loop amplifier
The BA-200 induction loop amplifier is designed to provide inductive
audio signals in coaches. The amplifier is equipped
with settings for basic volume and tone and uses
Automatic Gain Control to effectively support
volume stabilization for fluctuating input levels.
Digital control makes it possible to select one of
the two audio sources connected at the same
time, e.g. a microphone and a music system.
Microphone, audio connection cable and induction
loop wire come included with the system.
Technical Data
• Dimensions (HxWxD): 42x180x140 mm
• Weight: 905 g / Colour: Silver-metallic
• Power supply: 12 – 24 V DC / Power cord: 2 m
MOBILE LOOP induction loop amplifier
The induction loop system kit contains a complete, portable
induction loop system designed for rooms up to 140 m² in size.
The set consists of the PROLOOP C amplifier and two cable reels
with 25 metres of loop wire each. The system is easy to use and
ready to go in a flash – ideal for temporary installations.
Technical Data
• Power supply: 220 - 240 V
• Weight: 8.7 kg
• Colour: Silver
• Dimensions (HxWxD): 150 x 450 x 330 mm
• Power cord: 2 m
Features
• Three line/microphone input jacks
• Connection option for a wireless
• microphone (6.3 mm / mono)
• Up to 20 A surge current
• Frequency range 100 - 5300 Hz (-3 db)
PROLOOP FSM measuring device
The PROLOOP FSM is a measuring device for the precise measurement of the
magnetic field strengths in induction loop systems acc. to IEC 60118-4:2006
and BS 6083, Paragraph 4. The device is designed for professional use and
delivers reliable RMS values on the output level, response frequency, AGC
function (Automatic Gain Control), distortion and background noise in the
induction looped tested. In addition, it enables
the user to make an acoustic evaluation of the
sound using signal reproduction via earphones.
Features
• Compliant with AS 1428.5 for testing equipment
used to evaluate induction loop systems.
• True RMS: 125 ms average time
• Crest factor: 3
• A filter weighted
• Measuring range: +6 dB ...-51 dB (0 dB = 400mA/m)
• Power supply: 2 x 1.5V AA
batteries, long battery life
• Battery status control via LED
• Headphone jack with volume control
Features
• Higher output power: 11 A RMS / Short-circuit-proof
• Automatic fuse reset / Two programmable, balanced XLR inputs
• One phono input / Two line outputs
• Extra-sturdy jacks / Dual action AGC for excellent speech recognition
• High availability, operating reliability and quality assurance
• Convenient monitoring of the magnetic field: Can
be done using headphones or speakers
• Treble control to compensate for treble losses due to reinforcement
The PROLOOP amplifier family is designed for professional use in mediumsized rooms (up to 170 m²) in private buildings and public facilities, in which
particularly high dependability and extremely reliable operation are required.
With its 100-percent short-circuit proof amplifier, programmable,
balanced XLR input jacks and highly stable output power, the PROLOOP
C is able to meet these demands. Automatic Gain Control (AGC)
guarantees consistent field strength and reproduces stable sound with
a special emphasis on clear speech, even under acoustically demanding
conditions. The integrated monitor output and corresponding testing
technology can be used to analyse the induction loop audio quality.
Technical Data
• Mains connection: 230-240 V AC 50 Hz, 7-200 W, 10 A fuse
• Coverage: 170 m² acc. to IEC 60118-4, single-loop, free field
Induction loop output
• Max. current: 60 A from peak to peak, 1-5 ms, 1 kHz, 11
A RMS, continuous 1 kHz, short-circuit-proof
• Max. voltage: 31 V from peak to peak
• Output AGC: Sets voltage and power for steady signals like
oscillation and sine curves after 0.6-1 seconds to -10 dB. Short
pulses and normal program signals are not limited.
• Frequency response: 100 - 5000 Hz ( ± 3 dB)
• Distortion: < 1%
• Cable connection: Screw connection on rear panel of amp
• Line Outputs 1. LINE OUT: 0 dBm-phono (with AGC function)
Line Inputs
• Inputs 1 & 2: 0.5 mV-180 mV / 10 kOhm (mic.) alt. 50 mV - 10 V/ 10 kOhm
(line)Separate 2-channel AGC, phantom voltage 9-12 V, XLR connections
• Input 3: 50 mV-10 V / 10 kOhm, phono connections
AGC
• Dynamics: > 70 dB
• Rise time: 2 - 500 ms
• Fall time: 0.5 - 20 dB/s
Controls & Displays
• Treble control: 0 - +9 dB, potentiometer
• Induction loop adjustment: 0 - 170 m², potentiometer
• Displays: One green LED each for mains connection,
input level and induction loop current
Induction Loop Monitoring
• 6.3 mm jack for speaker and headphone monitoring
Enclosure
• Dimensions: 62 x 295 x 188 mm (H x W x D)
• Weight: 2.7 kg
• Colour: Black
Group Technologies Full-Line Product Catalogue No.1
Telephone: (03) 9354 9133 • E-Mail: [email protected] • www.grouptechnologies.com.au
7
induction loop systems
PROLOOP DCC induction loop amplifier
PROLOOP LOS induction Loop amp: low-overspill installations
Features
• Higher output power:25 A RMS
• Short-circuit-proof
• Automatic fuse reset
• Three programmable, balanced XLR inputs
• Sensitivity, phantom voltage, balanced/ unbalanced and
priority can be separated adjusted for each input
• High availability, operating reliability and quality assurance
• Convenient monitoring of the magnetic field: Can
be done using headphones or speakers
• Treble control to compensate for treble losses due to reinforcement LED
display for mains connection, input level and induction loop current
Features
• Uniform coverage throughout the room (no dead spots in the middle of the
room) / No signal fluctuations when hearing-aid user moves his/her head
• Reduced sensitivity to architecture-related magnetic fields
• High efficiency, low power consumption / 19“ design
• Well suited for retrofitted installation in theatres, cinemas,
concert halls, schools, conference rooms
Designed for rooms up to 800 m² in size, the PROLOOP DCC induction
loop amplifier is an ideal solution for event venues and larger assembly
halls. Short-circuit-proof PLS amplifiers with programmable, balanced
XLR inputs and extremely stable as well as large output ratings (up
to 25 A RMS) guarantee the high availability of the induction loop
system. Automatic Gain Control (AGC) creates consistent field strength
to produce stable tone with outstanding speech reproduction – even
under difficult acoustic conditions. The integrated monitor output and
the corresponding measurement technology make it possible to test
the quality of the induction loop system easily and conveniently.
Technical data
• Mains connection: 230-240 V AC, 50 Hz, 25-700 W, 10 A fuse
• Coverage: 800 m² acc. to IEC 60118-4, single-loop
Induction Loop Output
• IIMax. power: 78 A / 0.06 ohms 25 A RMS, 10-300 ms 1 kHz,short-circuit-proof
• Max. voltage: 47 V from peak to peak, output AGC sets voltage and power
for steady signals like oscillation and sine curves, after 0.6 - 1 seconds
to -10 dB. Short pulses and normal program signals are not limited.
• Frequency range: 100 - 5000 Hz (±3 dB)
• Distortion: < 1 %
• Cable connection: Screw connection on rear panel of amp
Outputs
• 1. LINE OUT: 0 dBm-phono (with AGC function)
Inputs
• IN 1, 2 and 3: XLR connections, sensitivity, phantom voltage, balanced/
unbalanced and priority can be adjusted separately for each input.
AGC
• Dynamics: >70 dB
• Rise time: 2 - 500 ms
• Fall time: 0.5 - 20 dB/s
Controls and displays
• Treble control: 0 - +9 dB (potentiometer)
• Induction loop adjustment: 0 - 800 m² (potentiometer)
• Displays: Mains connection: 1 green LED
• Input level: 3 green LEDs
• Induction loop power: 5 red LEDs
Enclosure
• Dimensions: 88 x 438 x 280 mm (H x W x D)
• Weight: 14 kg
• Colour: Black
The PROLOOP LOS is a compact system designed to operate low overspill
systems. It integrates the entire electronic configuration required in a single
enclosure to provide a flexibly sized, reliable low-overspill solution for the
coverage of adjacent event rooms and assembly halls up to a size of 300 m².
The system is equipped with Automatic Gain Control (AGC) to produce stable
sound with outstanding speech reproduction, even under difficult acoustic
conditions. The values/data required to test the quality of the induction loop
system can be conveniently picked up via an integrated monitor output
Technical Data
• Mains connection: 230 – 240 V AC, 50Hz, 25 – 700 W
• Coverage: 300 m² acc. to IEC 60118-4, single-loop
Induction loop output
• Max. power: 60 A from peak to peak, 1-5ms, 1 kHz, 2 x
13 A RMS, continuous 1 kHz, short-circuit-proof
• Max. voltage: 47 V from peak to peak
• Output AGC: Sets voltage and power for steady signals like
oscillation and sine curves after 0.6-1 seconds to -10 dB. Short
pulses and normal program signals are not limited.
• Frequency range: 70 – 10000 Hz (±3 dB)
• Distortion: < 1 %
• Cable connection: 2 screws on the rear panel of the amp
Outputs / Inputs
• Master OUT: 0 dBm, RCA (with AGC function)
• Slave OUT: 0 dBm, RCA (with AGC function)
• IN 1: Combined XLR / 6.35 mm connection plug
• MIC sensitivity 2.5 mV – 10V RMS / 10 kOhms,
• Phantom voltage 9 – 20 V or LINE sensitivity 37 mV – 10V RMS/10 kOhm
• IN 2: Dual RCA connections, 45 mV – 10V RMS / 10kOhm
• SCART (IN/OUT): Dual SCART connection plug,50
mV RMS IN (TV) / OUT (DVD-VCR-SAT)
AGC
• Dynamics: > 70 dB
• Rise time: 2 – 500 ms
• Fall time: 0.5 – 20 dB/s
• Rise and fall times depend on the currently active channel
Controls
• Loop setting: 0 – 300m² (loop-1 and loop-2 potentiometer;
coverage depends on the loop configuration)
• Input level: IN 1 and IN 2 can be adjusted separately
Displays
• Power supply: LED green, lights up with mains connection
• Correct input signal: LED green, lights up when the AGC input is active
• Induction loop power: LED green
Enclosure
• Dimensions: 88 x 438 x 280 mm (H x W x D)
• Colour: Black
Group Technologies Full-Line Product Catalogue No.1
Telephone: (03) 9354 9133 • E-Mail: [email protected] • www.grouptechnologies.com.au
8
other assistive
listening options
HUMANTECHNIK Other Assistive Listening Options
Infrared Systems
How does an infrared audio transmission system work?
An IR audio transmission system consists of at least one transmitter
and one receiver. The transmitter is connected to an audio source – to a
microphone system, for example – and transmits the signals received in the
form of infrared light impulses wirelessly to the receiver, which converts
the light impulse received into electrical audio signals and feeds them into
the reproduction device connected – into headphones, for example, or a
teleloop for the inductive direct transmission to hearing aids (see diagram).
Areas of application
Apart from the home environment, in which the wireless reception
of audio signals via infrared light has long since become a popular
alternative to the corresponding radiofrequency transmission
systems, this technology proves superior to all other transmission
principles for certain large professional applications.
This applies in particular to venues and facilities, in which the confidentiality
of the information exchanged there plays a decisive role, for example in
courtrooms or conference rooms, and areas, in which several transmission
systems are operated parallel to one another in neighbouring rooms,
such as in multiplex cinemas or in living quarters in social facilities.
In addition, infrared audio transmission systems have proven valuable in
schools and universities, in large auditoriums with partial signal coverage or
in city centres, in which there is a very high rate of radio frequency emissions.
Advantages of infrared transmission technology
• Infrared light signals cannot pass through walls, which reduces
reception to the room in which the transmitter is installed.
• Transmission is reliable and absolutely free of the interference
caused by electromagnetic fields or structural elements in the
building, such as metal reinforcements. In addition, these systems
do not produce any electromagnetic emissions themselves.
Coverage
While the range of systems designed for private use is limited to about
10 or 20 metres, high powered infrared transmitters are able to provide
coverage for much larger rooms. The transmitters described in this product
overview, for example, are able to provide coverage for up to 2600 m².
Other characteristics of infrared audio transmission systems:
• Portable/mobile systems are available.
• Multi-channel operation provides for flexible use, making it possible to
simultaneously transmit several different languages, for example.
Other factors affecting infrared transmission technology:
The transmitter does not focus the emission of the infrared
light impulses, i.e. it uses a very large transmission angle.
As a result, there is generally no need for a specific line of sight between the
transmitter and the receiver. The signals do not only travel directly between
the transmitter and the receiver, but are also reflected from the walls, ceilings
and floors. Nevertheless, pillars and furniture – depending on their size and
position – can interfere with or even block reception under certain conditions.
In any case, a technically correct, precise positioning of the
transmitters is required for optimal signal coverage.
• Light-coloured floor, wall and ceiling areas reflect infrared energy
more strongly. This can increase the reception range.
• Dark, low-reflection floors, ceilings and walls absorb the energy and
can limit reception ranges as a result. The carrier frequencies of 2.3
to 3.8 MHz (basic band) minimize the probability of interference
resulting from powerful lighting. However, functional problems
due to direct sun light cannot be ruled out altogether.
• In order to provide coverage for areas that exceed the maximum
range of the individual transmitters, it is necessary to install several
transmitters at different locations and connect them in parallel.
The signals are transmitted to the hearing aid via a special infrared
receiver with audio amplification equipped with a teleloop (induction).
If the receiver is equipped with an audio output jack, it is also possible to
use headphones or earphones. Amplifying infrared audio receivers are
available as pocket devices, ‘under the chin” receivers, headphones with
reception diodes or in the LR version with a teleloop and audio output.
If the reception range is the main criterion for the application in this
context, it is advisable to consider the use of a radio-frequency system
as an alternative – also taking into consideration the cost factor.
Group Technologies Full-Line Product Catalogue No.1
Telephone: (03) 9354 9133 • E-Mail: [email protected] • www.grouptechnologies.com.au
9
other assistive
listening options
WIR TX 9 High-powered infrared transmitter (4 Channel)
WIR TX90 two-channel infrared transmitter
The TX9 infrared transmitter uses a wide emission angle and a typical roughly
circular geometry (see diagram below) to send signals into the room. The
operating bandwidth of 2.3 to 3.8 MHz guarantees interference-free operation,
unaffected by the extraneous light from other portions of the spectrum.
The two-channel TX90 infrared transmitter combines the modulator
and transmitter as one unit in a single enclosure. This design saves
money and does not take up a lot of room during transportation.
With a signal coverage of 2600 m² in one-channel operation, the
TX9 can also be used in large rooms. The connection of additional
TX9 transmitters increases or multiplies the reception range.
The system comes with a mounting kit for the wall and ceiling.
The TX9 is not equipped with a modulator function, which means that
the separately available MOD 232 modulator is required to connect
the system to the audio source and to process the signals.
The TX90 transmitter uses a wide angle for the efficient emission of
the infrared signals into the room to be provided with coverage. With
an operating bandwidth of 2.3 to 3.8 MHz, the transmission of the
TX90 is reliable and immune to the effects of extraneous light.
In 1-channel mode, the transmitter is able to cover up to 2600
m². With the addition of another TX9 transmitter, it is possible
to easily expand the reception range. The system includes
an installation kit for wall and ceiling mounting.
Technical Data:
Stands for freestanding installation are also available.
• Dimensions (H x W x D): 15,9 x 28,6 x 5,4 cm
• Weight: 900 g
• Colour: Black with white text, red acrylic faceplate
• Power supply: 24 VAC, 50 – 60 Hz, 35 VA, 3-pin MOLEX
connector (each WIR TX9 requires its own power supply)
• Mains connection: NEC class 2-wire, max. length: 61 m
• Displays: Voltage: green / basic band: red
• Carrier frequency: 50 kHz to 8 MHz
• IR transmitter power: 3.5 W
Reception range/coverage areas
• 2600 m² in 1-channel mode with RX22-4 or RX12-4 receivers
• 1700 m² in 2-channel mode with RX22-4 or RX12-4 receivers
• 325 m² in 1-channel mode with the RX14-2 receiver
• 285 m² in 1-channel mode with the RX16 receiver
• Basic band input: BNC, 100 mV per carrier, 50 Ω
(for the WIR TX9 or MOD 232 only)
• Basic band output: BNC, 50 Ω (for the TX9 only)
• Basic band cable: RG 58 coax, BNC plug, max. length: 300m
• Ambient conditions: 0 – +50 °C ambient temperature
(non-condensing, non-corroding environment)
• Installation types: Wall or ceiling mounting: BKT 024 installation kit
• SS-11 or SS-6 microphone stand set
• Guarantee: 5 years for transmitters, 90 days for accessories
• Certifications: CE, FCC, ROHS, WEEE,
• Compatible receivers: WIR RX12-4 four-channel receiver,
RX14 stereo receiver, RX16 two-channel receiver
Technical Data
• Dimensions (H x W x D): 15,9 x 28,6 x 5,4 cm
• Weight: 800 g
• Colour: Black with white text, black acrylic faceplate
• Power supply: 24 VAC, 50 – 60 Hz, 35 VA,3-pin MOLEX connector
• Mains connection: NEC class, 2-wire, max. length 61 m
• Modulation: FM wideband, + 50kHz
• Carrier frequency: Channel A: 2.3 / 2.8 MHz (selectable)
• Channel B: 3.3 / 3.8 MHz (selectable)
• IR transmission power: 3.5 W
Reception range / coverage areas
• 2600 m² in 1-channel mode with the RX12-4 receiver
• 1670 m² in 4-channel mode with the RX12-4 receiver
• 325 m² in 1-channel mode with the RX14-2 receiver
• 285 m² in 1-channel mode with the RX16 receiver
• Desired signal /background noise: >75 dB / +3 dB
• Response frequency: 80 to 15000 Hz, electrical
• Compression: Music 1:1
• Speech 1.5:1
• Hearing aid 2:1 (default setting)
• Automatic shutoff: Switches off after 20 signal-free minutes
Group Technologies Full-Line Product Catalogue No.1
Telephone: (03) 9354 9133 • E-Mail: [email protected] • www.grouptechnologies.com.au
10
other assistive
listening options
MOD 232 modulator A-4092-0
A-4903-0 under-the-chin receiver
The MOD 232 Modulator is connected to the audio source. It processes
these signals and sends them to the transmitter. The transmitter
then converts this data into infrared light impulses and sends them
out at a wide angle into the room to be provided with coverage.
Under-the-chin receiver weighing
less than 30 g for connection
to the RX22-4 receiver.
Conferences are often plagued by limited acoustic quality. That’s why the
MOD 232’s audio-processed signals focus on speech frequencies for wellbalanced good reproduction and reduce undesirable background noise. As
a result, people can listen to longer lectures and events without tiring.
Like the TX9 transmitter, the MOD 232 modulator also includes an
installation kit for wall and ceiling. Rack mounting kits also available.
A-4904-0 in-ear headset
You receive the signals from
the RX-22-4 system very
discretely and inconspicuously,
such as at public events.
A-4921-0 teleloop
Technical Data
• Dimensions (H x W x D): 4,4 x 21,5 x 20,8 cm
• Weight: 1.500 g
• Colour: Black with white lettering
• Rack assembly: 1/2 rack unit in width, 1 rack unit in height; with
RPK 005 (simple) or RPK 006 (double) installation kits either
one or two modulators can be installed in one rack.
• Power supply: 24 VAC, 50 – 60 Hz, 15 VA
• Modulation: FM broadband, ± 50 kHz deviation, 50 uS pre-distortion
• Carrier frequency: Channel A: selectable 2.3 / 2.8 / 3.3 / 3.8
MHz. Channel B: selectable 2.3 / 2.8 / 3.3 / 3.8 MHz
• Signal-to-noise ratio: > 60 dB
• Frequency response: 30 to 16000 Hz + 1 dB, -3 dB
• Harmonic distortion: Less than 2 %
• Audio processing: Compression (rising) adjustable from 1:1 to 4:1
Switchable compression amplification: Moderated 16 dB; max. 33 dB
• Microphone level: Symmetrical, Lo-Z, 100 μV min. to 90 mV max.,
1 mV nominal, 3 kΩ input impedance, delivers switchable neutral
current according to DIN 45596 for condenser microphones
• Line level: Symmetrical or asymmetrical, 21 mV min.
to 10 V max., 212 mV nominal, 100 kΩ
• Audio line output: RCA jack, channel A and channel B, 500 mV, asymmetrical,
100 Ω source impedance (load impedance must be larger than 1 kΩ)
• Basic band input: BNC, allows mixing with additional modulator
MOD 232 (4- channel mode), 100 mV, 50 Ω input impedance
• Basic band output: Two BNC jacks lead the basic band signal, 100 mV / channel,
50 Ω source impedance, to be used exclusively with WIR TX9 or MOD 232
• Automatic shutoff: Switches off after 30 signal-free minutes
• Certifications: CE, FCC Section 15, Industry Canada, AS
• Ambient conditions: 0 – +50 °C ambient temperature
(non-condensing, non corroding environment.
Teleloop for connection to the
RX22-4 receiver Direct inductive
audio transmission to hearing
aids equipped with a telecoil
(switch set to »T« or »MT«
A-4978-0 12 receiver charger
12 receiver charger for the
RX22-4 infrared receiver.
A-4979-0 dual-charger
2 receiver charger for the
RX22-4 infrared receiver
Group Technologies Full-Line Product Catalogue No.1
Telephone: (03) 9354 9133 • E-Mail: [email protected] • www.grouptechnologies.com.au
11
other assistive
listening options
RCI 102 two-channel infrared – under-the-chin receiver
RX22-4 infrared receiver
The RCI 102 is an ergonomically designed under-the-chin receiver that weighs
just 52 grams and is equipped with swivelling earpieces, which means that the
earpieces retain their position in the ear even when the user turns his/her head.
The RX22-4 is a portable four channel infrared receiver (pocket receiver),
which can be worn on a strap around the neck. The receiver is compatible
with all transmitters that operate at frequencies from 2.3 to 3.8 MHz.
The flexible material used to make the ear buds also nestles gently into the
auditory canal to effectively subdue any ambient noise.
The receiver is easy and convenient to use. It is limited to just two operating
elements: a knob for the combined on/off/volume function and a four-stage
switch for channel selection. The selective channel setting allows the listener
to select a language, for example, for simultaneously interpreted information.
Stereo or selective mono reception, e.g. for multi-language transmissions.
The RCI 102 is equipped with a switch to select the frequency channels. Both
channels are constantly active for stereo transmissions. If the event organizer
uses both the 2.3 MHz and the 2.8 MHz frequency ranges to transmit in two
different languages at the same time, the listener can select the channel in his/
her preferred language and receive the information in mono mode.
Technical Data
• Weight: 52 g with battery
• Colour and material: ABS plastic, black and red
• Rechargeable battery, battery life: BAT AP97A NIMH battery, approx. 5 h
• Modulation processes: FM, mono or stereo
• Sound freq transmission range: 15 - 20000 Hz
• Operating frequencies: 2.3 MHz and 2.8 MHz
• Possible selections: stereo reception or either frequency for mono reception
• Harmonic distortion: <1%
• Signal-to-noise ratio: Typically. 60 dB
• Controls: Knob for volume; Balance can be adjusted with the help of a
screwdriver
• Maximum volume: Approx. 120 dB
• Main switch: Integrated in the receiver
The RX22-4 is equipped with connection jacks for mono or stereo
headphones. In addition, a teleloop for the inductive transmission of
sound to hearing aids can also be connected. Dual IR reception diodes
guarantee maximum reception sensitivity within the transmission zone.
Technical Data
• Type of receiver/design: Pocket receiver with dual reception
diode, carrying strap (can be worn around the neck)
• Dimensions (H x W x D): 104.1 x 72.4 x 30.4 mm
• Weight: 127 g, incl. batteries
• Colour: Black
• Carrying strap: 91 cm
• Operating temperature: -10 °C to +50 °C
• Battery type: 2 x AA, Alkali (001) or NiMH (026)
• Battery life: Alkali: 60 h / NiMH: 30 h
• Charging contacts: For the CHG 3512 only
• Carrier frequencies: Channel 1: 2.3 MHz. Channel 2: 2.8
MHz. Channel 3: 3.3 MHz. Channel 4: 3.8 MHz
• Linear pre-distortion: 50 μsec.
• FM deviation: ±50 kHz
• Signal-to-noise ratio: 60 dB min.
• Noise limiter: Receiver cuts off at 40 dB S/N
• Response frequency: 25 Hz to 16 kHz, +1 dB , -3 dB, electrical
• Harmonic distortion: < 1%, electrical
• Operating elements: On/off/volume: combined knob
• Channel selection: four-stage switch
• Operating display: LED constant, flashing indicates low battery
• Audio output: 3.5 mm, stereo (mono or stereo operation)
• Audio output power: Max. 15 mW at 32 Ω
• Acoustic output: 125 dB SSPL90 with HED 021; 110 dB SSPL90 w / EAR 013
• Sensitivity: Better than 1 nW/cm² for 40 dB signal-to-noise ratio
• Certifications: CE, FCC, ROHS, WEEE
Group Technologies Full-Line Product Catalogue No.1
Telephone: (03) 9354 9133 • E-Mail: [email protected] • www.grouptechnologies.com.au

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