Widex CLEAR C4-9 User manual

USER INSTRUCTIONS
THE CLEAR™440 SERIES
C4-m/C4-m-CB model
Behind-the-ear
YOUR WIDEX CLEAR™440
HEARING AID
(To be filled out by the hearing care professional)
Date:
_____________________________
Battery size: _____________________________
2
CONTENTS
SYMBOLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
THE HEARING AID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Right/left identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
The battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Inserting the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Removing the battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Battery drawer without a nail grip . . . . . . . . . . . . . . . . . 12
Low battery indication . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Turning the hearing aid on and off . . . . . . . . . . . . . . . . . . . 14
Positioning the hearing aid. . . . . . . . . . . . . . . . . . . . . . . . . . 15
Removing the hearing aid . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Volume adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Lost partner alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Listening programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Switching between the listening programs. . . . . . . . . . 25
Zen+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Using a telephone. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
The hearing aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
The microphone openings . . . . . . . . . . . . . . . . . . . . . . . . 28
ACCESSORIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
IN CASE OF MALFUNCTION . . . . . . . . . . . . . . . . . . . . . . . 30
CARING FOR YOUR HEARING AID. . . . . . . . . . . . . . . . . . 32
WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
ADVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
REGULATORY INFORMATION . . . . . . . . . . . . . . . . . . . . . . 38
3
SYMBOLS
The following symbols will be used throughout the
manual:
WARNING
Messages with this heading indicate serious adverse reactions,
potential safety hazards and inadequate performance of device.
CAUTION
Messages with this heading indicate/include information regarding any special care to be exercised.
Non-ionizing radiation
Not for general waste.
4
THE HEARING AID
The illustration below shows the hearing aid without an
ear-set. The choice of ear-set solution depends on your
specific needs. Please refer to the separate ear-set user
manual.
1. Microphone openings
2. On/off function
3. Nail grip
4. LED/RL ID
5
NOTE
In addition to these user instructions, a separate user manual is
provided describing the various ear-set solutions available for
your hearing aid: “Ear-sets for Widex BTE hearing aids”
WARNING
This booklet and the manual “Ear-sets for Widex BTE hearing
aids” contain important information and instructions. Read
these booklets carefully before you start using the hearing aid.
NOTE
Your hearing aid, ear-set and accessories may not look exactly
as illustrated in this booklet. We also reserve the right to make
any changes considered necessary.
Intended use
The CLEAR hearing aids are intended as air conduction
amplification devices to be used in everyday listening
environments. The CLEAR hearing aids may be provided with the Zen program intended to provide a relaxing
sound background (i.e. music/noise source) for adults
who desire to listen to such a background in quiet.
Indications for use
The devices are indicated for individuals with a range of
hearing loss severity from slight (16 dB HL to 25 dB HL)
to moderately severe (85 dB HL) ) and all hearing loss
configurations.
6
They are to be programmed by licensed hearing healthcare professionals (audiologists, hearing aid specialists,
otolaryngologists) who are trained in hearing (re)habilitation as well as tinnitus management.
Description of device
Your CLEARTM hearing aid is used with an ear-set which
consists of an earwire and an earpiece, in which the
receiver is placed. The hearing aid uses a proprietary
wireless technology, the WidexLink, to enable communication between the left and the right hearing aids, as
well as between the hearing aids and the RC-DEX accessories.
Your hearing aid may be provided with an optional listening program called Zen. It makes musical tones (and
sometimes a rushing noise) in the background. These
sounds are shaped according to your hearing loss.
7
Right/left identification
The arrow shows the position of the
identification mark (red mark = right
and blue mark = left).
Acoustic indicators
The hearing aid may be set to produce a signal to indicate the use of certain functions. The signal may be a
spoken message or tones adjusted by the hearing care
professional in consultation with you. The signal can
also be deactivated.
Adjusting volume
via remote control
Tone*
Off
Confirming RC program key use
Clicking
sound
Off
Changing program
via remote control
Message Tones
Off
Starting up the hearing aid
Message Tone
Off
Warning about low battery
Message 4 tones
Off
Warning about lost partner
Message
Off
Service reminder
Message
Off
* Bold indicates standard setting
8
The battery
We recommend zinc-air batteries. Use a size 10 battery
for the hearing aid.
To obtain replacement batteries, please consult your
hearing care professional. It is important to take note
of the expiration date and the recommendations on the
battery pack regarding disposal of used batteries. Otherwise there is a risk that the battery life may be reduced.
Inserting the battery
Before inserting a new battery into the
hearing aid, remember to remove the adhesive tab. Once the tab has been removed,
the battery will start functioning after a few
seconds.
CAUTION
Do not use batteries if there is a sticky residue from the tab or
other unwanted substance, as this can cause the hearing aid to
malfunction.
9
Use the nail grip to gently swing the battery drawer
open. Do not press the drawer beyond the open position.
Place the battery in the drawer as illustrated, so that the
plus (+) sign on the battery is facing towards you when
you hold the hearing aid as shown. You can use the battery magnet provided to steer the battery into place.
+
If the battery drawer does not close easily, the battery
is incorrectly inserted.
When changing battery, it is a good idea to hold the
hearing aid over a table.
10
Removing the battery
1. Open the battery drawer as previously described.
Place the hearing aid on the provided cloth on a
clean, plane surface and turn it as illustrated.
2. Supporting the drawer with your finger, use the
battery magnet provided to push the battery out of
the battery drawer from the minus side.
1
2
11
Battery drawer without a nail grip
The hearing aid may be provided
with a battery drawer without a nail
grip, which means that you need
a tool to open the battery drawer.
This type of drawer can be a good
choice if the hearing aid is worn by
a child. A special tool for opening
the drawer will be included with this
drawer.
The battery drawer is opened as illustrated.
12
Low battery indication
An acoustic indicator will sound when the battery is
nearly exhausted, unless this function has been disabled (see page 8). We recommend that you always
have a spare battery with you.
WARNING
Never leave an exhausted battery in the hearing aid. Exhausted
batteries may leak, damaging the hearing aid.
WARNING
Your hearing aid may stop functioning, for instance if the
battery is exhausted. You should be aware of this possibility, in
particular when you are in traffic or are otherwise dependent
on warning signals.
13
Turning the hearing aid on and off
The battery drawer of the hearing aid also functions as
the on/off switch.
Close the battery drawer to turn on the
hearing aid. An acoustic indicator will
indicate that the hearing aid has been
switched on unless this function has
been disabled.
Open the battery drawer to turn off
the hearing aid.
Please remember to turn off the hearing aid when it is not in use. Remove
the battery if the hearing aid will not
be used for several days.
14
Positioning the hearing aid
Insert the earpiece in the ear canal while holding the
lower part of the tube. It may help to pull the outer ear
backwards and upwards with the opposite hand.
Place the hearing aid behind the ear, so that the hearing aid and tube rest comfortably on the ear, close to
your head.
The illustrations show an open ear-tip. For further information on ear-tip/earmold types, anchors and procedures, see the separate ear-set user manual provided.
15
Removing the hearing aid
Remove the hearing aid from its position behind the
ear.
Carefully pull the earpiece out of the ear canal, while
holding the lower part of the earwire. If the earpiece is
provided with an extraction cord, take hold of this and
carefully pull the ear-tip out of the ear canal.
16
Volume adjustment
The hearing aid volume is adjusted automatically in accordance with your sound environment.
If you have a remote control, you can also adjust the
volume manually or mute your hearing aid. Any adjustment of the volume setting will be cancelled when your
hearing aid is turned off, or when you change program.
In the default setting, any volume adjustment via the
remote control will affect both hearing aids.
To alter the increments in which the volume is increased
or decreased, consult your hearing care professional.
If you have a remote control, please also refer to the
user instructions for this.
CAUTION
If the volume in the hearing aid is generally too loud or too
weak, or the reproduced sounds are distorted, or if you would
like any further information, consult your hearing care professional.
To mute the hearing aid with a remote control:
Keep pressing the volume down key on the remote control after the long beep-tone has sounded and until it
stops. Pressing one of the volume keys briefly will bring
back the sound.
17
Lost partner alarm
(Note: Only applicable if this feature has been activated by your hearing care professional).
If one of your hearing aids falls off your ear, and/or the
battery is exhausted, a tone signal and a spoken message will sound two times in the other hearing aid, and
a diode will flash on both hearing aids.
When the lost hearing aid is repositioned, and/or the
battery is exchanged, the diodes stop flashing.
18
Listening programs
By default, your hearing aid has one listening program.
If you have a remote control, your hearing aid may be
provided with five of the following programs, plus the
special Zen program called Zen+.
Please also refer to the user instructions for your remote control.
 Master
Standard
 Music
For listening to music
 TV
For listening to the TV
 Comfort
Attenuates background noise
 Reverse focus
Focus on sounds from behind
 Audibility Extender
Makes high-frequency sounds audible
 Phone
For listening to the telephone
 Zen
Generates different kinds of
tones. Contains one style
Compound programs
The Master program in one ear
and Zen, Audibility Extender, Reverse focus or Phone in the other




 Zen+
Special Zen program with up to
three different Zen styles
19
If your needs change over time, the combination of listening programs can be altered.
Zen program
Your hearing aid may be provided with a unique optional listening program called Zen. It makes musical tones
(and sometimes a rushing noise) in the background using the latest in Fractal technology. These sounds are
shaped according to your hearing loss so you can listen
to them at any time and at any place with a simple push
of the program button. The Zen program may be used
alone (without amplification) in quiet when you are not
required to hear surrounding sounds. Or, it may be used
with another program so both the surrounding sounds
and the generated sounds (fractal tones and noise) are
heard together.
CAUTION
Use of the different Zen programs may interfere with hearing
surrounding sounds including speech. The programs should not
be used when hearing such sounds is important. Switch the
hearing aid to a non-Zen program in those situations.
20
CAUTION
If you perceive decrease in loudness, tolerance of sounds,
speech not as clear, or worsening tinnitus, contact your hearing
care professional.
The duration of the Zen play time can be set by your
hearing care professional according to your needs.
Benefits
The Zen program may provide a relaxing listening
background for some people. When the Zen program
is used in a tinnitus management program, its wearer
may experience some relief from tinnitus.
Indications for use
The Zen program is intended to provide a relaxing
sound background (i.e., music/noise source) for adults
who desire to listen to such a background in quiet. It
may be used as a sound therapy tool in a tinnitus treatment program that is prescribed by a hearing healthcare professional (audiologists, hearing aid specialists,
otolaryngologists) who is trained in tinnitus management.
21
Directions for use
The Zen program can be activated with a simple push
of the program button on the hearing aid (or on the remote control). Depending on how your Hearing Healthcare Professional has set up the program, you can access the Zen program by a “short-press” of the program button or a “long-press” of the program button.
• “Short-Press” option – the program button is pressed
for less than a second. At most two listening programs can be programmed for Zen.
• “Long-Press” option – the program button is pressed
and held for more than 1 second. Up to three Zen
styles are available. A “short-press” of the program
button in the long-press mode will allow you to cycle through the available Zen styles. You can exit the
“long-press” mode by pressing and holding the program button for more than a second.
Because of the unique ways in which Zen is programmed in your hearing aid, please follow the recommendations of your hearing healthcare professionals as
to how to use the program, when to use the program
and/or how long to use the program.
22
Precautions
To ensure the safety and effectiveness of the Zen program when used as a sound therapy tool for tinnitus,
the tinnitus management program must be designed
and conducted by Hearing Healthcare Professionals who are trained in tinnitus management. A tinnitus
management program should include a complete audiological evaluation, tinnitus diagnosis, counseling, use
of proper amplification and/or sound therapy tools.
Prior to any tinnitus management program, it is advisable that you seek medical attention to exhaust any
medical or surgical treatment options.
Use your hearing aid and the Zen program according
to the directions and schedule recommended by your
hearing healthcare professionals.
Warnings
Use of the Zen program may interfere with hearing everyday sounds including speech. It should not be used
when hearing such sounds is important. Switch the
hearing aid to a non-Zen program in those situations.
23
Risks
There are no known risks or side effects associated with
the use of the Zen program. However, consistent with
our recommendations on the use of conventional hearing aids, stop using the hearing aids (and the Zen program) and seek attention from your hearing healthcare
professional if any of the following symptoms are noted:
• Skin irritation
• Perceived decrease in loudness, tolerance of sounds,
speech not as clear, or worsening tinnitus
24
Switching between the listening programs
Each time you change program via the remote control,
an acoustic indicator will sound unless this function has
been disabled.
Program 1:
Program 2:
Program 3:
Program 4:
Program 5:
Zen+:
Message or one short beep
Message or two short beeps
Message or three short beeps
Message or one long and one short beep
Message or one long and two short beeps
Message or tone
In the default setting, both your hearing aids will be
affected when you change programs.
Zen+
This program is accessed via a long press (two secs.)
on the program button. A short press then allows you
to cycle through the available Zen styles.
You can exit Zen+ by pressing and holding the program
button for two seconds.
25
Using a telephone
When using a telephone, we
recommend that you hold the
telephone against your head at
an angle above your ear, rather than directly against the ear.
If the sound is not optimal, try
moving the telephone earpiece
to a slightly different position.
26
CLEANING
The following cleaning accessories are available for the
hearing aid and ear-set *. For cleaning the ear-set, see
the user manual “Ear-sets for Widex BTE hearing aids”.
1. Cloth
2. Wax removing tool
3. Cleaning thread
Contact your hearing care professional if you need additional supplies of cleaning accessories.
* Selection depends on ear-set type
27
The hearing aid
Clean the hearing aid with the soft
cloth after use.
WARNING
Never use water or cleaning solutions to clean the hearing aid,
as this may cause it to malfunction.
The microphone openings
Clean the microphone openings
by passing the wax removing tool
straight through the openings.
If you feel resistance, withdraw
the tool and try again. Use only
the wax removing tool provided.
When the hearing aid is not in use,
the battery drawer should be left
open, to ventilate the hearing aid
and allow it to dry.
28
ACCESSORIES
RC-DEX
A compact hearing aid remote control
making it easy to adjust volume and
change programs.
For help in determining whether you
could benefit from a remote control,
please consult your hearing care professional.
29
IN CASE OF MALFUNCTION
The following pages contain some quick advice on what
to do if your hearing aid stops working or performs unsatisfactorily. If the problems persist, contact your
hearing care professional for assistance.
The advice relates only to the hearing aid. Also see the
user manual “Ear-sets for Widex BTE hearing aids”.
Problem
Possible cause
Solution
The hearing
aid is completely silent
The hearing aid is
not turned on
Make sure the battery
drawer is closed
The hearing
aid volume is
not powerful
enough
The battery is nearly Insert a new battery in
exhausted
the battery drawer
The battery does not Insert a new battery in
work
the battery drawer
Your ear is blocked
by earwax
Contact your ENT
doctor/physician
Your hearing may
have changed
Contact your hearing
care professional
The hearing
aid whistles
continuously
Your ear is blocked
by earwax
Contact your ENT
doctor/physician
Your two
hearing aids
are not
working in
synchrony
The connection between the hearing
aids is lost
Turn the hearing aids
off and on again
30
Problem
Possible cause
Solution
The hearing
a. The RC-DEX is
a. Move the RC-DEX
aids do not
used beyond the
closer to the CLEAR
respond with
transmission
hearing aids
a correspondrange (> 1 m)
ing change in b. Strong electrob. Move away from
volume or
magnetic interferknown source of EM
program to
ence in the vicininterference
the RC-DEX
ity
c. The RC-DEX and
c. Check with dispenser
the CLEAR hearto make sure RC-DEX
ing aids are not
is matched with
matched
CLEAR hearing aids
You hear
“interrupted”
speech (on
and off) from
the hearing
aids or no
speech (muted) from the
transmitting
ear.
a. The battery in one a. Replace battery in
of the hearing aids
one or both hearing
has expired
aids
b. Strong electrob. Move away from
magnetic interferknown sources of inence in the vicinterference
ity
31
CARING FOR YOUR HEARING AID
The hearing aid is a valuable object and should be
treated with care. Here are some things you can do to
prolong the life of your hearing aid:
CAUTION
• Turn off your hearing aid when it is not in use. Remove the
battery if the hearing aid will not be used for several days.
• When the hearing aid is not in use, keep it in its case in a cool,
dry location out of reach of children and pets.
• Do not expose the hearing aid to extreme temperatures or
high humidity. Make sure to dry the hearing aid thoroughly
after heavy perspiration such as that which may occur during
intense physical activity, e.g. playing sports.
• Avoid dropping your hearing aid – perform cleaning and battery changes while holding the hearing aid above a soft surface.
• Do not wear your hearing aid while in the shower or swimming, or when using a hair dryer, perfume, hair and body
sprays or gels such as suntanning lotions or creams.
• In environments with high humidity, a drying kit may be used
daily to reduce the amount of moisture inside the hearing aid.
See the instructions enclosed with the drying kit .
32
WARNINGS
WARNING
Hearing aids and batteries can be dangerous if swallowed or
used improperly. Swallowing or improper use can result in
severe injury or even fatalities. In case of ingestion, contact a
physician immediately and the 24 Hour National Button Battery Ingestion Hotline at (202) 625-3333.
• Keep hearing aids and their parts, accessories and batteries out of reach of children and anyone else who might swallow such items or otherwise cause injury to themselves. Do
not change batteries in front of them and do not let them see
where you keep your battery supply. Discard used batteries
carefully.
• Batteries are very small and can easily be mistaken for pills or
the like. Never put a battery or hearing aid in your mouth for
any reason as you may risk swallowing it.
33
WARNING
• Risk of explosion if battery is replaced by an incorrect type
or recharged. Dispose of used batteries according to the instructions.
• Never allow others to wear your hearing aid, as this could
cause permanent damage to their hearing.
• When selecting a listening program, please remember that
there are situations in which it is particularly important to be
able to hear the surrounding sounds (e.g. traffic, warning signals).
• The hearing aid is made of modern non-allergenic materials.
Nonetheless, in rare cases skin irritation may occur. If you notice skin irritation in or around your ear or ear canal, contact
your hearing care professional.
34
WARNING
• Be aware that the use of any type of hearing aid may involve
a slightly increased risk of infection in the ear canal. An infection can arise as a result of inadequate ventilation of the ear.
We therefore recommend that you remove the hearing aid
and ear-set from your ear at night to allow the ear canal to be
ventilated. Make sure that you clean and inspect your hearing
aid and ear-set as required. If an infection occurs, you should
seek medical attention and contact your hearing care professional for advice on how to disinfect the various hearing aid
parts. Do not under any circumstances use alcohol, chlorine
or similar substances.
• Widex hearing aids are not certified for use in mines or other
areas with explosive gases.
• Do not wear your hearing aid during radiation, X-rays, MRIs,
CT or other medical treatments and scans. The emissions
from these procedures as well as from other types of radiation, such as that in a microwave oven, can damage your
hearing aid. Radiation from, for example, room surveillance
equipment, burglar alarms and mobile phones is weaker and
will not damage the hearing aid, but may create audible interference.
35
CAUTION
• Your hearing aid has been tested for interference according
to international standards. Nevertheless, it is possible that
unforeseen interference may occur in the hearing aid due to
electromagnetic radiation from other products such as alarm
systems, room surveillance equipment and mobile phones.
• Although your hearing aid has been designed to comply with
the most stringent international electromagnetic compatibility standards, the possibility cannot be excluded that it may
cause interference with other equipment, such as medical devices.
• Never try to open or repair the hearing aid yourself.
36
ADVICE
NOTE
• The hearing aid will not restore normal hearing and will not
prevent or improve a hearing loss resulting from organic
conditions. However, the hearing aid can help you to make
the best possible use of your remaining hearing ability. You
should also bear in mind that it can take time to get used to a
new hearing aid and new sounds.
• In most cases, using the hearing aid infrequently will not permit you to gain full benefit from it.
• The use of a hearing aid is only part of hearing habilitation
and may need to be supplemented by auditory training and
instruction in lipreading.
• The use of hearing aids increases the risk of accumulation of
earwax. Contact your physician/ENT doctor if you suspect
that a plug of earwax has accumulated in your ear. Earwax
may not only reduce your own hearing but also the effect of
the hearing aid considerably. It is a good idea to ask your physician to clean your ears a couple of times a year.
37
REGULATORY INFORMATION
The following Table summarizes the technical details of the
WidexLink technology as it is implemented in the CLEAR™ hearing
aids.
Hearing
aids
RC-DEX
TM-DEX
Bluetooth*
- NOAHlink
Antenna
type
Inductive
antenna
Inductive
antenna
Inductive
antenna
Embedded
ceramic antenna
Antenna
dimensions
Ø1.8 mm,
Ø8 mm,
Ø6 mm,
L - 4.85 mm L – 20 mm L - 8 mm
NA
Modulation
FSK
FSK
FSK
FHSS/
GFSK, /4
DPSK, 8
DPSK
Magnetic
Field
Strength
(at 10 m
distance)
-54
dBμA/m
-13
dBμA/m
-26
dBμA/m
NA
Output
power
(EIRP**)
29 pW
21 nW
1.2 nW
+4dB re.
1mW
Range
< 1 m remote unit to
hearing aid
< 30 cm between hearing aids or
Hearing aid
to TM-DEX
< 1 m remote unit
to hearing
aid
< 30 cm between hearing aid and
TM-DEX
< 10 m between PC
and
NOAHlink
10.6 MHz
10.6 MHz
2.4 GHz
Center
10.6 MHz
frequency
38
Hearing
aids
RC-DEX
TM-DEX
Bluetooth*
- NOAHlink
Channel
Single
channel
radio
Single
channel
radio
Single
channel
radio
5 logical
channels
Bandwidth
660 kHz
(-15 dB)
660kHz
(-15 dB)
660kHz
(-15 dB)
1 MHz
Data-rate
212 kbit/
second (raw
channel
capacity)
212 kbit/
second
(raw
channel
capacity)
212 kbit/
2.1 Mbps
second (raw
channel
capacity)
Data flow
Simplex or Simplex
semi-duplex capability
capability
Simplex or Time divisemi-duplex sion duplex
capability
(TDD)
Random
Access – no
collision
avoidance
Random
Access – no
collision
avoidance
Packetbased protocol, time
divided; secure Serial
Port Profile
(SPP)
* Bluetooth specification v2.0 + EDR published by the Bluetooth
Special Interest Group (SIG).
** EIRP = Equivalent isotropically radiated power.
Protocol
Random
Access –
no collision
avoidance
Bluetooth Identifier: B01837
Reference number of QPN: NOAHlinkV1.2_412832_QPN_E1
39
(Benefits) The use of wireless transmission allows convenient
and synchronized control of hearing aid functions. The CLEAR
wireless hearing aids share input information between the two
partner hearing aids. In so doing, the wearers would experience
the following additional user benefits (only when wearing binaural
CLEAR hearing aids).
Synchronization of volume control settings between hearing
aids – The volume in both hearing aids will change when the VC is
adjusted on one ear.
Synchronization of listening programs between hearing aids – The
same listening program is used in both hearing aids when one is
changed by the user.
Surveillance of partner hearing aid – The hearing aid(s) will signal
an alert (“partner check”) when a hearing aid battery has expired,
or that one of the hearing aids has fallen off. In rare instances, a
much stronger wireless source nearby may activate this alert. This
serves as an early warning to the wearer of such service interruption.
Coordination of compression – The CLEAR hearing aids maintain
the intensity level difference between ears (inter-aural level difference, ILD). In some situations where speech is presented to
one side and noise the other side, this coordinated action could
enhance the relative loudness of the speech sounds to the noise
background and improve speech understanding for some wearers.
More accurate identification of feedback – The CLEAR hearing aids
distinguish between “true” hearing aid whistling (or feedback) and
music sounds to prevent unnecessary feedback cancellation and
preserve natural sound quality.
40
(Contraindications):
• Congenital or traumatic deformity of the ear
• Active drainage from the ear within 90 days
• History of rapid progressive hearing loss within previous 90
days
• Acute or chronic dizziness
• Sudden unilateral hearing loss in previous 90 days
CAUTION
(Risks) The use of the CLEAR/DEX should not interfere with
other devices such as a pacemaker. However, to be extra cautious, Widex follows the guidelines recommended by the manufacturers of implantable defibrillators and pacemakers for their
patients when using mobile phones. Specifically, hearing aid
wearers who also use a pacemaker should
• Keep the hearing aids at a distance of at least 15 cm away from
the pacemaker and
• Do not carry the hearing aids (and/or any of the DEX accessories) in a shirt pocket or close to the chest.
• If any interference is observed, do not use the hearing aids
(and/or DEX) and contact your pacemaker manufacturer and
hearing healthcare professional immediately.
41
RADIO TRANSMITTER / CABLES / TRANSDUCERS
The CLEAR™ series hearing aid contains a radio transmitter /
receiver with the following
Radio transmitter parameters:
• Frequency (range): 10.6 MHz (10.2 – 11.0 MHz)
• Bandwidth (-15dB): 660 kHz
• Channel: Single channel radio
• Modulation: FSK
• Radiated output power: 29 pW / -75 dBm
• Magnetic field strength: -54 dBμA/m @ 10 m
• Duty Cycle: < 5 % (averaged over 1 hour of operation)
• Simplex or semi duplex capability
The radio receiver in the CLEAR™ series hearing aid is using the
same frequency and bandwidth as the transmitter.
Cables and transducers:
No cables and transducers are used neither during normal use of
the CLEAR™ series hearing aid nor during programming of the
hearing aid.
42
QUALITY OF SERVICE FOR WIRELESS TECHNOLOGY IN
THE WIDEXLINK SYSTEM
WidexLink wireless technology enables communication between
two partners of a binaural pair of CLEAR hearing aids and with
their matched external devices. The requirements for the quality
of service (QoS) vary among the various components and their
intended user scenarios.
For programming, these requirements include a BER (Bit Error
Rate) better than 10-3, at a bitrate of 212 kbits/s, a semi-duplex
transmission with a required acknowledge, a transmission latency
in each direction (2x) and a receive-to-transmit mode (RX to TX)
time. The data are saved in the hearing aid even when transmission
is interrupted.
During daily use, the requirements on audio streaming between
hearing aids include a BER better than 10-3. The communication is
simplex with a bitrate of 212 kbits/s. The additional audio decoding in this mode results in a longer latency which is less than 10 ms.
For remote control commands the QoS requirements include a
BER better than 10-2. The lower BER requirement results from redundant transmissions. Each key press results in transmissions of
7 data packages of which only one is needed for a successful communication.
For inter-ear communication between hearing aids, a BER better
than 10-3 is required. The communication is updated every 50 ms
(or 20 Hz). The hearing aids continue to amplify based on the last
saved settings even when the transmission range is exceeded or
when communication is interfered.
43
Wireless Security Measures
Security of the wireless signals is assured through device system
design that includes:
• Individual MAC address for each unit which is checked during
each transmission.
• A built-in pairing table which specifies valid and legitimate
pairing among units
• A proprietary Widex communication protocol which checks the
package numbers during each transmission.
• A Cyclic Redundancy Check (CRC) to check data validity and
correct errors.
44
GUIDANCE AND MANUFACTURER’S DECLARATION
Electromagnetic emissions
The CLEAR™ series hearing aids are intended for use in the electromagnetic environment specified below. The customer or the
user of a CLEAR™ series hearing aid should assure that it is used in
such an environment.
Emissions test
Compliance
Electromagnetic environment
- guidance
RF emissions
CISPR 11
Group 2
The CLEAR™ hearing aid must
emit electromagnetic energy in
order to perform its intended
function. Nearby electronic
equipment may be affected.
RF emissions
CISPR 11
Class B
Harmonic
emissions
IEC 61000-3-2
Voltage fluctuations/ flicker
emissions IEC
61000-3-3
The CLEAR™ hearing aid is suitable for use in all establishments, including domestic esNot
tablishments and those directly
applicable *)
connected to the public
low-voltage power supply netNot
work that supplies buildings
applicable *) used for domestic purposes.
*) Battery powered equipment
45
Electromagnetic immunity
The CLEAR™ series hearing aids are intended for use in the electromagnetic environment specified below. The customer or the
user of a CLEAR™ series hearing aid should assure that it is used in
such an environment.
Immunity
Test
IEC 60601
Test level
Compliance
level
Electromagnetic
environment –
guidance
Electrostatic ± 6 kV condischarge
tact
(ESD)
± 8 kV air
IEC
61000-4-2
± 6 kV contact Floors should be
± 8 kV air
wood, concrete
or ceramic tile. If
floors are covered with synthetic material,
the relative humidity should be
at least 30 %.
Electrical
fast transients/burst
IEC
61000-4-4
± 2 kV for
power line
supplies
± 1 kV for input/output
lines
Not
applicable *)
Surge
IEC
61000-4-5
± 1 kV line(s)
to line(s)
Not
applicable *)
Not
applicable *)
Not
applicable *)
± 2 kV line(s) Not
to earth
applicable *)
46
Not
applicable *)
Immunity
Test
IEC 60601
Test level
Compliance
level
Electromagnetic
environment –
guidance
Voltage
dips, short
interruptions
and voltage
variations on
power supply input
lines
IEC
61000-4-11
<5 % UT
(>95 % dip
in UT) for
0.5 cycle
40 % UT
(60 % dip
in UT) for 5
cycles
70 % UT
(30 % dip
in UT) for 25
cycles
<5 % UT
(>95 % dip
in UT) for 5 s
Not
applicable *)
Not
applicable *)
Power frequency
(50/60 Hz)
magnetic
field
IEC
61000-4-8
3 A/m
3 A/m
Power frequency
magnetic fields
should be at levels characteristic
of a typical location in a typical
commercial or
hospital environment
NOTE UT is the a.c. mains voltage prior to the application of the
test level.
*) Battery powered equipment
47
Electromagnetic immunity – cont.
The CLEAR™ series hearing aids are intended for use in the electromagnetic environment specified below. The customer or the
user of a CLEAR™ series hearing aid should assure that it is used in
such an environment.
Immunity
Test
IEC 60601 CompliElectromagnetic environTest level ance level ment – guidance
Portable and mobile RF
communications equipment should be used no
closer to any part of the
CLEARTM series hearing
aid, including cables, than
the recommended separation distance calculated
from the equation applicable to the frequency of the
transmitter.
Conducted 3 Vrms
RF
3 Vrms
Recommended separation
distance
d = 1.2 √P
IEC
150 kHz to
61000-4-6 80 MHz
Radiated
RF
3 V/m
IEC
61000-4-3
80 MHz to
2.5 GHz
3 V/m
d = 1.2 √P
80 MHz to 800 MHz
d = 2.3 √P
800 MHz to 2.5 GHz
48
Immunity
Test
IEC 60601 CompliElectromagnetic environTest level ance level ment – guidance
Where P is the maximum
output power rating of the
transmitter in watts (W)
according to the transmitter manufacturer and d is
the recommended separation distance in metres
(m).
Field strengths from fixed
RF transmitters, as determined by an electromagnetic site survey a, should
be less than the compliance
level in each frequency
range b.
Interference may occur in
the vicinity of equipment
marked with the following
symbol:
49
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range
applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection
from structures, objects and people.
a. Field strengths from fixed transmitters, such as base stations
for radio (cellular/cordless) telephones and land mobile radios,
amateur radio, AM and FM radio broadcast and TV broadcast
cannot be predicted theoretically with accuracy. To assess the
electromagnetic environment due to fixed RF transmitters,
an electromagnetic site survey should be considered. If the
measured field strength in the location in which the CLEAR™
series hearing aid is used exceeds the applicable RF compliance
level above, the CLEAR™ series hearing aid should be observed
to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as re-orienting or
re-locating the CLEAR™ series hearing aid.
b. Over the frequency range 150 kHz to 80 MHz, field strengths
should be less than 3 V/m.
Recommended separation distances
Recommended separation distances between portable and
mobile RF communication equipment and the CLEAR™ series
hearing aids.
The CLEAR™ series hearing aids are intended for use in the electromagnetic environment in which RF disturbances are controlled.
The customer or the user of the CLEAR™ series hearing aid can
help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the CLEAR™ hearing aids as recommended below, according to the maximum output power of the
communications equipment.
50
Rated maximum
output power of
transmitter
(W)
Separation distance according to frequency
of transmitter (m)
150 kHz to
80 MHz
d = 1.2 √P
80 MHz to
800 MHz
d = 1.2 √P
800 MHz to
2.5 GHz
d = 2.3 √P
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed
above, the recommended separation distance d in metres (m) can
be estimated using the equation applicable to the frequency of
the transmitter, where P is the maximum output power rating of
the transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection
from structures, objects and people.
This CLEAR™ hearing aid may be interfered with by other equipment even if that other equipment complies with CISPR emission
requirements.
51
(EMI/EMC Compliance).
The CLEAR™ hearing aid complies with the following EMC/EMI
standards:
Standard
Test type
Note
47 CFR Part
15, subpart C
RF emissions
USA Federal Communications
Commission (FCC) requirements for intentional radiators.
EN 303 330-2 RF emissions
V1.3.1
incl. Spurious
emission
EMC and radio spectrum matters for Short Range Devices in
the frequency range 9 kHz – 25
MHz
IEC 60601-12:2007
*adapted
protocol
EMC emission
Immunity, RF
and ESD
Medical electrical equipment.
General requirements for basic
safety and essential performance.
Electromagnetic compatibility.
EN 301 489-3 Immunity, RF
V1.4.1
and ESD
Standard for Low Power Transmitters in the frequency range
9 kHz – 40 GHz
IEC 6011813:2004
Immunity
RF Near Field
immunity test
International Product std. for
hearing aids to ensure adequate
immunity to radio interference
from mobile telephones.
ANSI C63.192001
Immunity
RF Near Field
immunity test
American National Standard
Methods of measurement of
Compatibility between wireless
Communication Devices and
Hearing Aids
* The device was tested in only one orientation that represents the
longest length (or worst case scenario). This is acceptable because
of the relative small size of the device compared to the wavelength
of the RF used in the test.
52
IMPORTANT NOTICE FOR PROSPECTIVE HEARING AID
USERS
Good health practice requires that a person with a hearing loss
have a medical evaluation by a licensed physician (preferably a
physician who specializes in diseases of the ear) before purchasing
a hearing aid. Licensed physicians who specialize in diseases of
the ear are often referred to as otolaryngologists, otologists, or
otorhinolaryngologists. The purpose of medical evaluation is to
assure that all medically treatable conditions that may affect hearing are identified and treated before the hearing aid is purchased.
Following the medical evaluation, the physician will give you
a written statement that states that your hearing loss has been
medically evaluated and that you may be considered a candidate
for a hearing aid. The physician will refer you to an audiologist or a
hearing aid dispenser, as appropriate, for a hearing aid evaluation.
The audiologist or hearing aid dispenser will conduct a hearing aid
evaluation to assess your ability to hear with and without a hearing aid. The hearing aid evaluation will enable the audiologist or
dispenser to select and fit a hearing aid to your individual needs.
If you have reservations about your ability to adapt to amplification, you should inquire about the availability of a trial-rental or
purchase-option program. Many hearing aid dispensers now offer
programs that permit you to wear a hearing aid for a period of
time for a nominal fee after which you may decide if you want to
purchase the hearing aid.
Federal law restricts the sale of hearing aids to those individuals
who have obtained a medical evaluation from a licensed physician.
Federal law permits a fully informed adult to sign a waiver statement declining the medical evaluation for religious or personal
beliefs that preclude consultation with a physician. The exercise
of such a waiver is not in your best health interest and its use is
strongly discouraged.
53
Children with hearing loss
In addition to seeing a physician for a medical evaluation, a child
with a hearing loss should be directed to an audiologist for evaluation and rehabilitation since hearing loss may cause problems in
language development and the educational and social growth of
a child. An audiologist is qualified by training and experience to
assist in the evaluation and rehabilitation of a child with a hearing
loss.
54
FCC ID: TTY-C4M
FCC ID: TTY-C4MCB
IC: 5676B-C4M
IC: 5676B-C4MCB
Federal Communications Commission Statement
This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including
interference that may cause undesired operation.
NOTE:
This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can
be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of
the following measures:
— Reorient or relocate the receiving antenna.
— Increase the separation between the equipment and receiver.
— Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
— Consult the dealer or an experienced radio/TV technician for
help.
55
NOTE:
This equipment complies with FCC radiation exposure limits set
forth for an uncontrolled environment. This transmitter must not
be co-located or operating in conjunction with any other antenna or transmitter.
Changes or modifications to the equipment not expressly approved by Widex could void the user’s authority to operate the
equipment.
Industry Canada Statement /
Déclaration d’industrie Canada
Under Industry Canada regulations, this radio transmitter may
only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada.
To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
This device complies with Industry Canada licence-exempt RSS
standard(s). Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device.
56
Conformément à la réglementation d’Industrie Canada, le
présent émetteur radio peut fonctionner avec une antenne d’un
type et d’un gain maximal (ou inférieur) approuvé pour
l’émetteur par Industrie Canada.
Dans le but de réduire les risques de brouillage radioélectrique à
l’intention des autres utilisateurs, il faut choisir le type d’antenne
et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l’intensité nécessaire à
l’établissement d’une communication satisfaisante.
Le présent appareil est conforme aux CNR d’Industrie Canada
applicables aux appareils radio exempts de licence.
L’exploitation est autorisée aux deux conditions suivantes :
(1) l’appareil ne doit pas produire de brouillage, et
(2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.
57
Hereby, Widex A/S declares that this C4-m and
C4-m-CB are in compliance with the essential requirements and other relevant provisions of Directive
1999/5/EC.
A copy of the Declaration of Conformity can be found
at: http://www.widex.com
58
Hearing aids, accessories and batteries should not be disposed of with normal
household waste. Please consult your national Widex distributor for advice on how
to dispose of these items.
59
Manufacturer
CIB203/0511
¡9 514 0133 041*¤ ¡#01v¤
Printed by HTO / 2011-05
9 514 0133 041 #02