Humatechnik Infralight DIR User manual

GB Operating Instructions

Quick Setup
1. Check contents of package.
2. Place transmitter near TV or sound source.
3. Connect audio leads between TV and transmitter.
4. Connect power supply to transmitter and plug into mains socket.
5. Place receiver in transmitter charging cradle.
6. Leave receiver in cradle for 14 hours for an initial charge.
7. Switch on TV.
8. Take receiver from charging cradle and wear the receiver. The headset
receiver switches on automatically when you wear it. The Neckloop
receiver has an on/off switch on the rear.
9. Make sure there are no obstructions between you and the transmitter.
10. Adjust the receiver volume to your needs and enjoy your favourite
programmes.
Introduction
Thank you for purchasing the InfraLight Wireless listening system. The system
allows you to listen more clearly to your TV, Radio or HiFi without any need for
trailing wires. It uses Infrared technology, similar to remote controls, to transmit
sound from your TV or other audio equipment to a headset or neckloop receiver.
Before using the system, please read these instructions to benefit from all the
capabilities of the system and give you many hours of reliable listening performance.
The system consists of two parts; a transmitter to pick up sound from your TV or
HiFi and a receiver powered by a rechargeable battery. A headset receiver is for
people without a hearing aid and a neckloop receiver is for people who want to
use the ‘T’ facility of their hearing aid.
The system is delivered with a connection kit to allow you to connect to most
modern audio equipment. An optional microphone can be used where direct
connection is not possible.
More than one listener can use the same transmitter. Receivers of either type can
be used at the same time. The system can charge up to three batteries at the
same time.
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3
Safety Precautions
This product is designed for hard of hearing people and can produce loud
sound levels. Listening to uncomfortable sound levels for long periods could
affect your hearing.
The manufacturer cannot be held responsible for damage which is caused by
not using the System in compliance with these safety precautions.
 • Donotopenthesystempartsatanytime;NOuserserviceableparts 
can be found inside.
 • Disconnectthepowersupplybeforemakingconnectionstothesystem.
 • Donotexposethesystempartsandaccessoriestorainoranyother
source of moisture.
 • Ensurethatthereisenoughroomaroundthetransmitterforventilation.
 • Donotcovertheventilationholesofthetransmitter.
 • Donotplacethesystemcomponentsclosetosourcesofheat,suchas
radiators.
Cleaning
ShouldcleaningbenecessaryONLYuseasoftdampcloth.Removable
ear pieces may be cleaned separately but MUST be completely dry before
replacing. Replace damaged ear pieces with new ones.

4
Transmitter
Front view
1 - Charging socket 2 - Charging Cradle
Rear view
3 - Power Supply 5 - Right/Left Line Input sockets
4a-Mono 4b-Stereo 6 - Microphone Socket
Operating Range
The diagram indicates the operating range. Reception will be cut off if the
receiverisoutsidethisarea,12mmax.fromthetransmitter.

5
Setting up
Place the transmitter in a suitable position near to your TV or HiFi. Make sure that
the front is placed so that it can be seen by anyone who wants to receive infrared
signals.

To obtain the best quality sound through your system use the red/white RCA
phono connectors on the transmitter with the lead supplied to directly connect to
your TV.
If your TV or HiFi uses similar red/white RCA phono connectors to output sound
then connect to these.
YoumayneedtorefertoinstructionsforTVtocongurethesocketstoprovide
sound output if you get no sound from them.
If your TV does not use RCA phono connectors to output sound then you could
use the SCART or jack adaptors accordingly to suit your equipment.
If you use the jack adaptor you may find that using a headphone socket may turn
off internal speakers for other users.
An optional microphone can be used to pick up the sound from your TV, allow
people to speak to you through the system or to monitor other sounds e.g.
telephone or door bell.
Mono/Stereo switch. Normally set to “stereo”. If you connect to a mono audio
source then switch to “mono” otherwise sound will only be heard in one ear
piece.
Plug the power supply into the transmitter and a mains socket.
Place receiver in charging cradle and allow the batteries to charge for 14 hours
before first use.
Rechargeable Batteries
The system only uses purpose-made batteries for the receivers. The system is
supplied with one battery. Additional batteries may be purchased separately.
This may be found in a packet or installed in the receiver. Blanking pieces are
inserted in the charging sockets of the transmitter to prevent damage to the
transmitter; these may be removed to charge one or two spare batteries. The
blanking piece may look like a battery but it has no metal contacts.
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7
Operation
Switch on your TV or HiFi and adjust the volume for other members of the
household.Yourlisteninglevelcanbesetbythevolumecontrolonyourreceiver.
Make sure that the receiver can see the transmitter; the “line of sight” should not
be obstructed. The system will cover a room up to 12 metres long.
Before wearing the receiver adjust its’ volume control to minimum.
Receivers should be worn so that the InfraLight logo faces towards the
transmitter.
The transmitter power should not be switched off otherwise the batteries may not
be fully charged when required.
Headset receiver
7 - Volume control
8 - Rechargeable battery
      Openthearmsbyholdingthemattheear
tips and place them in your ears. There is no
on/off switch, the headset switches on
automatically when worn; you may hear a
click as the arms are opened.
Adjust the volume to suit your hearing.
When finished listening; the receiver will
automatically switch off when taken off.
Place the receiver in the charging cradle.

8
Neck Loop receiver
9 - Rechargeable Battery
10 - Loop Safety break
11 - Volume Control
      12-AuxiliaryJackSocket
Switch on the receiver with the switch on the
back of the receiver. Place the neck loop
around your neck with the switch side
towards you.
The neck loop has a safety break in it; this
should be connected together when in use.
      Youcanusethisfeaturetomakewearingor
taking off the receiver easier.
Switch your hearing aid to the ‘T’ position. Adjust the volume control on the
receiver to suit your hearing; you may also need to alter the volume of your
hearing aid.
When finished listening; switch off the receiver on the back of the receiver and
place the receiver in the charging cradle.
The neck loop receiver can also be used as a universal receiver by using the
3.5mm stereo jack socket on the base of the receiver. Any suitable listening
devicewitha3.5mmstereoplugmaybeused.E.g.
- Headphones
- Under chin headset
 - Earphones
- Neck Loop
 - EarHooks–monoorstereo
- Hearing aid direct input leads
Plugging in a listening device will cut off the integral neck loop. Removing the
externallisteningdevicewillreturnsignaltotheintegralneckloop.

Rechargeable batteries and charging
Youcanexpectupto10hourslisteningfromafullychargedbattery.However
this may be reduced according to the volume setting of the receiver and the type
of programme being watched.
If, whilst listening, the sound stops or the sound quality becomes noisy or
distorted the receiver battery has become discharged and will need charging
before further use.
Youmaywishtopurchaseasecondbatterytoincreaseyourlisteningtime.A
second or third battery may be placed in either of the charging sockets on the
sidesofthetransmitter.Theseextrabatteriescanbechargedwhilstlistening.If
your battery becomes discharged whilst listening you can simply swap batteries
to continue listening. A flat battery will be recharged in about 14 hours.
Red indicator lights will show in the front of the transmitter if a battery is being
charged.Eachlightcorrespondstoachargingposition;oneforthereceiver
cradle and one for each of the charging sockets.
NOTE:Ifusingthereceivercradletochargeabatterypleaseensurethatthe
receiver is placed centrally such that the charging light is lit otherwise charging
willNOThappen.Whenusingthesidechargingsocketspleaseensurethe
batteries are pushed in until the corresponding light is lit.
The mains power to the transmitter must be left on for the batteries to recharge.
The charging control lights show red at all times when charging and do not
change colour. They only indicate the presence of a battery in the charging
position and do not indicate that a battery is being charged. Batteries normally
take about 14 hours to reach full charge.
Otherdimlightsmayshowfortheinfraredsystem;thisisnormaloperation.
Charging control lights
9

Maximising Battery life
Eachbatterypackcontains2NiMHrechargeablecells.Allrechargeable
batteries have a limited life and do not last for ever. Full battery capacity may
not be reached until 4-5 charge/discharge cycles have occurred. These battery
packs are designed to be recharged at least 500 times.
If you can fully discharge the battery through use before recharging then
youwillgetthemaximumlifefromthebattery.Ifpartiallychargedbatteries
are recharged this will shorten the overall life of the battery. All rechargeable
batteries degrade over time which means that their capacity will naturally
decrease with regular use.
If you are unsure whether a receiver battery is fully discharged before placing in
the charging cradle then use the receiver until the sound disappears or becomes
distorted then either recharge the battery pack or, if available, simply swap the
battery pack for a fully charged spare battery from the transmitter charging
socket.
Remember to switch the power off to the transmitter and remove the batteries
from transmitter and receivers when not using the system for a long period of
time.
Changing Batteries
10
Warning: The rechargeable battery packs only
go into a receiver or transmitter in one direction
andslideinandoutquiteeasily.TheydoNOT
require force to be inserted into the transmitter
or receiver. If force is used it will damage the
socket.

11
A clear plastic cover is supplied to
accidentally prevent changing the
volume control. To use this remove
the two rubber plugs and clip the
plastic cover in place. This can
protect the receiver from dust and
liquids from coming into contact with
the volume control.
Volume Control Cover
Balance Control
If you want to change the balance between the left and right ear on the headset
receiver use the small screw control on the rear of the receiver to adjust this.
A suitable screwdriver is supplied with the system. +/- 40dB control of the
balance is available.

12
Problems and Cures
Symptom
Recharging control lights
do not show when batteries
or receiver are placed into
the transmitter.
Middle recharging control
light does not show when
a receiver is placed in the
charging cradle.
Side recharging lights do
not show when a battery is
placed in the side charging
compartments
No sound is heard from the
receiver
Poor or distorted sound
Battery pack does not give
expectedoperatingtime
per charge
Cause & Solution
Check that the transmitter power supply is
correctly connected to the transmitter and mains
power socket.
No contact is made between the charging
contacts and the receiver.
Check that the receiver is correctly placed into
the cradle.
Check that a battery is correctly inserted into the
receiver.
No contact is made between the charging
contacts and the battery. Check that a battery is
correctly inserted into the transmitter.
Transmitter is not correctly connected to TV/HiFi
etc.
TV/HiFi is not turned on/output not switched on,
refer to your other equipment instructions.
Check battery is placed correctly in receiver.
Replace battery with a fully charged one.
Check “line of sight” to the transmitter is not
obstructed
Check the transmitter and receiver are within 12
metres
Plasma TVs can cause Infrared disturbance you
may need to change to another listening system.
Replace battery with a fully charged one.
Battery pack is not fully charged
Battery pack has reached its’ recharging limit
and needs replacement

13
Technical Specifications
Modulation FM, Stereo & Mono
Carrier frequency 2.3 / 2.8 MHz
Frequency response 15–20kHz
Distortion  < 1%
Signal to Noise Typ. 60dB
Battery charging time ~ 14hours
Battery capacity 180mAh
Headset receiver
Operatingtimepercharge ~ 10hours
MaximumvolumeSPL ~ 120dBA
Weight 55g
Neckloop receiver
Operatingtimepercharge ~ 10hours
Weight 56g
Transmitter
Power consumption ~ 3.6VA
Operatingvoltage 12VDC
Supply voltage 230V 50Hz
Weight 172g

RM4017-3 · 0512
GB
Great Britain
Sarabec Ltd
15 High Force Road
GB-Middlesbrough TS2 1RH
Tel.:  +44(0)1642/247789
Fax: +44(0)1642/230827
E-mail: [email protected]
Humantechnik Service-Partner
D
NL
F/B
CH
For other service-partners
in Europe please contact:
Humantechnik Germany
Tel.: +49(0)7621/95689-0
Fax:+49(0)7621/95689-70
Internet:www.humantechnik.com
e-mail:[email protected]
Netherlands
France
Belgium
Switzerland
Germany
Humantechnik GmbH
Im Wörth 25
D-79576WeilamRhein
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Fax: +49(0)7621/95689-70
E-mail: [email protected]
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Rastatterstrasse 9
CH-4057 Basel
Tel.:  +41(0)61/6932260
Fax: +41(0)61/6932261
E-mail: [email protected]
SMS
Audio Electronique Sàrl
173 rue du Général de Gaulle
F-68440 Habsheim
Tel.:  +33(0)389/441400
Fax: +33(0)389/446213
E-mail: [e-mail]
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