Comfort Digisystem DH10 User manual

Comfort Digisystem User manual
Comfort Digisystem
Receiver
DH10
US / English

2Receiver DH10
User manual
Table of contents Page
1) Introduction to the Comfort Digisystem 3
2) Regulatory information 3
3) Functions of the Receiver DH10 4
4) Included accessories 4
5) Getting started 5
6) Menu and settings 6
7) More functions 8
8) Radio range and channels 8
9) Trouble shooting 8
10) Battery maintenance 9
11) Technical data 9
12) Service and warranty 10
13) Important safety instructions 11

3Receiver DH10
1) Introduction to the Comfort Digisystem
Thank you for choosing Comfort Digisystem. The products are easy to use, whether you use a hearing aid or not.
Before using the product, please read this User manual carefully.
With the Receiver DH10 receiver, the signal is received digitally, resulting in an excellent clear sound.
The Comfort Digisystem products feature SecureStream Technology – a unique, patented digital technology
allowing eavesdrop-secure radio transfer in real time.
2) Regulatory information
Comfort Digisystem products are not to be used as a substi-
tute to the hearing aids and should be used in accordance
with the specifications and recommendations provided by
your physician.
NOTE! Max output > 130 dB SPL (Sound Pressure Level).
Could be very dangerous for your hearing.
It is recommended that customers keep the volume control
in the lowest position, when turning on the device. If not, the
sound could potentially cause harm to the customers’ hear-
ing.
Comfort Audio is not liable for damages arising from usage of
the equipment not in accordance with the instructions provided
by Comfort Audio. Comfort Audio shall not be liable for perform-
ance problems and/or damages caused in any way by customer’s
modification of any part of the equipment.
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.
FCC ID: UOJ-DG01R
Industry Canada,
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 interfer-
ence that may cause undesired operation of the device.
IC ID: 6769A-DG01R
ETL
Conforms to UL Standard for Safety for Audio, Video and
Similar electronic apparatus – Safety Requirements UL 60065,
Issue:2003/06/30 Ed:7 Rev:2007/12/11
Certified to CSA Standard for Safety for Audio, Video and
Similar electronic apparatus – Safety Requirements CAN/
CSA-C22.2 No. 60065:03, Issued 2003/04/01 Ed:1 Amendment
1:2006
Intertek ETL Control number: 4002355
WARNING!
Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to
operate the equipment.
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 protec-
tion 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 communi-
cations. 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.
DANGER!
DO NOT USE the COMFORT DIGISYSTEM products if
you have a PACEMAKER or other implanted device.
The Comfort Digisystem products could cause the
pacemaker or other implanted device to malfunction
and cause serious injury or death.

4Receiver DH10
3) Functions of the Receiver DH10
Volume button +
Volume button -
Function indicator
Pairing button
Socket for headphones/earphones
Menu control
On / Off
Charging socket
Display indicating active
neckloop
Display indicating connected
headphones/earphones
Socket for neckloop
4) Included accessories
• Charger A11
• Split cable
• Neckloop

5Receiver DH10
5) Getting started
Charging
The Receiver DH10 is chargeable. Charge the DH10 at
least two hours before using it the first time. An empty
battery is fully charged within two hours.
During charging, the function indicator shows red and
a lightning bolt appears through the battery symbol in
the display. Once the battery symbol is filled with green
columns and the functions indicator shows green, the
unit is fully charged and switches to automatic float
charging.
Connecting a charger
to the Receiver DH10
Press in the contacts to the end. Check that the neck
loop is connected firmly.
When putting on/taking off the receiver connected to the
neck loop, be careful that the contacts do not break off.
Please note:
Only use the charger supplied by Comfort Audio.
Changing the battery without the assistance of an
authorized dealer will void the Limited Warranty.




First time use
Switch on the transmitter by pressing the On/Off button
for around two seconds.
Connect the neckloop or earphones/headphones in
combination with the neckloop. The neckloop is then
disconnected and acts as a necklace (it can be removed
if you want).
Connect neck loop carefully.
The contacts have to be
pressed in straightly.
Listen to the microphone in the transmitter.
(Please note: Start listening at low volume). Too loud a
sound may damage your hearing.
Adjust the volume with the volume buttons.
If you listen with a neckloop and a hearing aid, set the
hearing aid to the T or MT position.
With neckloop With neckloop and earphones

6Receiver DH10
6) Menu and settings
Menu control
Three different selections can be made:
To access the menu, press the menu control:
Back
Communication
Channel
Pair
Sound
Balance
Max volume
Fix volume
Settings
PIN-code
Charge
Language
Name
Button sound
Func. indicator
Factory Reset
Key lock
About
Scroll up
Press/select
Scroll down
Back (relates to both the main menu and submenus)
Here you can choose to return to the menu and to the
main display.
Communication
Channel
To use the receiver and the transmitter together, they
must be set to the same channel. The transmitter and
receiver are set to the default channel by the manufac-
turer.
Change channel:
1. Choose Channel in the menu.
2. Select a new channel using the menu control.
Channel information is also given when the units are
paired.
FFC (Free Frequency Check) indicates in green the suit-
able frequencies for the specific environment.
Pair
To use a receiver and transmitter together, they must be
paired. All transmitters and receivers are default paired
at the factory and will work together.
NB! To prevent eavesdropping, a new code key must be
generated and transmitted between the units by pairing.
Transmitting/receiving of pairing information along
with a new code can be performed from any Comfort
Digisystem unit with a display.
To pair units without a display, see section Pairing (via
pairing button) for more information. Pairing information
or a new code key can be received by several activated
units.
Pairing (via menu)
1. Choose Communication - Pair
2. Select Receive info on one unit. Ready to receive
pairing info is shown in the display.
3. Select New code on the other unit; select Yes.
4. Generate new code and send info? is
shown in the display. Select Yes (Now both
the channel and the coding information have been
sent, and sound transfer is eavesdrop-secure).
5. To pair another unit into your coded system, select
Send info instead on one of your paired units.

7Receiver DH10
Pairing (via pairing button)
(The only way of pairing units without a display, with the
pairing button).
You can activate the Pairing function via the pairing but-
ton.
1. One brief press of the button opens the
Pairing menu.
2. Two brief presses activate the Send info function.
3. One long press activates the Receive info function.
Sound
Balance
If you use the Receiver DH10 with head- or earphones,
you can adjust the balance for the right end left ear with
the menu control (scroll up or down). Press the menu
control to return to the menu.
Max volume
Activate the Max volume function by ticking in the box.
Choose Settings to adjust the maximum volume. Scroll
the menu control up and down to increase or decrease
the level.
Fixed volume
Activate the Fixed volume function by ticking in the box.
Choose Settings to set a permanent volume level. Use
the menu control and change the level by scrolling up or
down.
Settings
PIN-code
Here you can turn the PIN code function on and off
(selected functions lock).
Under the menu item Change PIN you can create your
own PIN code.
Under the menu item Lock Select, you can select differ-
ent types of menu locks:
- Sound: Locks all functions in the “Sound” menu
(can be combined with the “Pairing” menu item)
- Pairing: Locks all pairing functions in the unit, as
well as the pairing button
- All menus: Locks all menus
- Hide PIN entry: When the PIN-code is enabled, it is
only possible to unlock the menu within 3 seconds
after starting the unit, by pressing the menu
control.
A PIN-code is needed to be able to unlock selected
functions when PIN-code has been activated.
If you forget your PIN-code, please contact your point of
purchase to unlock the unit.
Charge
Here you can activate the Auto Power Off function to
shut down the unit automatically during charging. If
Auto restart is activated, the unit will start automatically
when the charger is disconnected or loses power.
Language
For selection of menu language.
Name
Here the text to be displayed is selected. Choose sym-
bols with the menu control. Select  to save and x to
close without saving. To move the cursor during editing,
use the symbols > and <.
Button sound
For activating or deactivating the button sound.
Func. indicator
Here you can enable or disable the function indicator.
This function does not affect charging and pairing
status.
Factory Reset
Resets the unit to it´s original settings and erases all
pairing information. To obtain security against eaves-
dropping, a new code key must be generated or received
from another unit in existing coded system.
Key lock
Here you can activate the key lock and thereby lock all
buttons. Once the key lock has been activated, Unlock
keys? appears in the display. Select Yes to unlock.
About
Software information.

8Receiver DH10
7) More functions
Function indicator (LED)
The function indicator shows the unit’s status.
On normal operation, the indicator flashes once every
three seconds.
During charging the indicator shows red.
When the charging is completed, the indicator shows
green.
When the battery level gets low, the indicator slowly
flashes red (check the battery status on the display).
Once the unit has been set to receive pairing informa-
tion, the indicator flashes green quickly.
When receiving pairing information, the indicator shows
green for three seconds.
When sending pairing information, the indicator flashes
red five times.
If the radio signal is weak, the indicator flashes red.
8) Radio range and channels
The transmitter and receiver have built-in antennas.
The radio range between the units is around 100 feet
(30 metres). This may however vary depending on the
particular environment you are in.
Like all radio systems, Comfort Digisystem communi-
cates on specific channels. If you use two transmitters
on the same channel or a neighbouring one, there may
be interference. Other electronic equipment can also
interfere with radio transmissions.
The channel that you use in your country is perhaps not
permitted abroad. Always get in touch with your hearing
aid provider in your country in order to find out which
channels are permitted in different countries.
Comfort Audio is not liable for unauthorized use of radio
waves, such as, but not limited to: interferences with
police communication, or strategic communication,
military installations etc.
9) Trouble shooting
The transmitter and receiver do not start
Charge the transmitter and receiver. Remember to press
the On/Off button down for 2 seconds to switch the unit
on. Check that the charger is connected to the plug
socket.
Poor speech intelligibility
The distance between the transmitter and the receiver
may be too long. The range is around 30 metres. The
distance between the microphone and the person who
is talking may also be too long; move the microphone
nearer to the person talking.
Try to change channel/environment.
Poor range and interference
In some environments involving, e.g., concrete, iron or
sheet metal structures, the range may be reduced. The-
re may also be equipment nearby causing interference.
Change channel.
No sound
Check that the transmitter and receiver are set to the
same channel.
Loud hissing noise (no sound transfer)
Check that the units are paired.
The unit will not start during charging
Disconnect the charger. Check the selection Auto power
off under Settings in the menu.
NB!
When using with a hearing aid, make sure that it works
both in the T and the MT position.

9Receiver DH10
11) Technical data
Type of receiver: SST – SecureStream
Technology
Range: Approx. 100 feet (30 m)
Dimensions: 2,91 x 1,54 x 0,51 inches
(74 x 39 x 13 mm)
Weight: 1,23 oz (35 g)
Frequency range: 904 - 927 MHz
Antenna: Built-in
Operating time: Up to ten hours
Battery: Chargeable Li-Polymer
Charging time: Approx. two hours
Connections: Neckloop, headphones/ear-
phones
10) Battery maintenance
The rechargeable products in the Digisystem series are
equipped with Li-Pol batteries, ie. the same type of
batteries used for most mobile phones and laptop
computers on the market today. These types of batteries
are able to store large amount of energy in relation to
their weight and volume.
The capacity of Li-Pol batteries diminishes during its life
cycle. The battery type has no "memory effect”, which
would mean that you need fully discharge the battery
before charging to minimize capacity loss. This means
that you can just as well charge the battery often and
little, as opposed to seldom and much. Special charg-
ing circuits in the Digisystem products protect batteries
from overcharging.
The capacity of the Li-Pol batteries deteriorates faster
when they subjected to deep discharge. Therefore, all
products of the Digisystem are fitted with a function that
automatically turns off the product well before deep
discharge occurs. Deep discharge may still happen as
the battery has a certain self-discharge. A product that
is fully or partly charged will with enough time reach
a state when the battery deep discharges, unless the
charger is connected. To avoid this we recommend that
the battery is charged at least every 6 months.
The weights, dimensions, capacities, performance ratings and other data in
Comfort Audio’s brochures, prospectus, circulars, advertisements, price lists and
instructions sheets are mentioned only as general information. They are only ap-
proximate and shall not bind Comfort Audio.
4002355
Conforms to ANSI/UL Std.60065
Certified to CAN/CSA Std.C22.2 No.60065:03

10 Receiver DH10
12) Service and warranty
Warranty extension
Comfort Audio Inc. warrants this product sold to the
first end user (buyer) against defects in materials or
workmanship for the time period and as set forth below.
Pursuant to this Limited Warranty, Comfort Audio will,
at its own option, either (a) repair the product or the
parts determined to be defective, using new or refurbis-
hed parts, or (b) provide you with a new, or at our
option, a refurbished unit. The repaired or exchanged
unit is under warranty for the remainder of the original
product’s warranty period. The warranty does not in-
clude any other direct, indirect or consequential damage
or loss, or any third party damages or losses.
This Limited Warranty is for a period of two years from
the date of purchase as indicated by an original receipt
from a Comfort Audio authorized retailer, dispenser or
medical facility. Headphones and earphones have a
warranty of 30 days from purchase.
How to make a warranty claim
For warranty service, you must contact the Comfort
Audio Customer Service listed below to obtain an
RMA (Return Merchandise Authorization) number.
A description of the defect, your name, address and
telephone number is required.
Ship the product freight prepaid via UPS or its equiva-
lent, including a copy of the original purchase receipt,
any cables, earphones and base/charger unit, in its
original packaging or one that offers equal protection.
Insure your shipment for loss or damage. Comfort Audio
accepts no liability in case of damage or loss en route to
our offices.
This Limited Warranty does not cover
Damage from misuse, neglect or normal wear and tear.
Products that have been modified. Products purchased
or serviced outside the territory. If you purchased your
product outside the territory, see your retailer for war-
ranty information.
Product Registration
Please complete, sign and mail the Product Registra-
tion Card packed with your unit. It will make it easier to
contact you if it ever would be necessary.
Comfort Audio Inc.
350 South Northwest Hwy, Ste 300
Park Ridge, IL 60068 USA
To contact the Comfort Audio Customer Service,
call [phone]
or by e-mail [e-mail]

11 Receiver DH10
Subject to change
13) Important safety instructions -
Read these before using your product
Not following the Important Safety Instructions, or trying to
repair and/or tampering the Equipment without the assistance
of an authorized technician will void the Limited Warranty.
Comfort Audio is not liable for any damages arising out of
such unauthorized uses, repairs, and/or tampering.
Please, heed all warnings. Read, keep and follow all
the safety instructions below.
WARNING!
• Too high a volume can seriously damage your
hearing.
• The necklace should not be used if there is a risk
of getting stuck, e.g. in a machine or other objects.
• Keep small parts out of reach of children and
animals. Choking hazard if swallowed.
• There is a danger of explosion if the battery is
incorrectly replaced.
Follow these instructions:
1) Do not use this product near water or in moist
environments of any kind.
2) The product shall not be exposed to excessive heat
such as sunshine, fire or the like.
3) Do not use the product near any heat sources such
as radiators, heat registers or other apparatus that
produce heat (e.g. amplifiers) and do not leave
products, e.g. in a warm car.
4) Do not disassemble the product.
5) You must not change the battery yourself; please
contact your point of purchase.
6) Do not defeat the safety features of the polarized
or grounded plug. A polarized plug has two blades
with different widths and will only fit into the socket
one way. A grounded plug has a third grounded
prong. The asymmetrical blades and the grounded
prong are there for your safety. If the provided plug
does not fit into your outlet, please consult a
qualified professional/electrician for replacement
of your outlet.
7) Never use a transmitter or receiver set to a non-
permitted frequency. Check with the frequency
authority in the country where the equipment is to
be used.
8) The products include radio transmitters. Do not
use products where it is not allowed to use
electronic equipment, e.g. on airplanes.
9) Never charge product in closed, unaired spaces
such as handbags, cases or other closed storage
bags.
10) Ensure that the power cord is not pinched or
damaged in any other way.
11) Unplug the product during lightning storms or if it
is not used for a long period of time.
12) Always start listening at a low volume and then
adjust it to a comfortable level.
13) Clean only with a dry cloth.
14) Only use the batteries and power supply or other
accessories specified by Comfort Audio.
15) The product contains sensitive electronic
equipment and must be handled carefully.
16) If the product does not operate normally, or if it
has been damaged in any way, service is required.
E.g. if the power-supply cord or plug is damaged, if
the product has been in contact with water or if
the product has been exposed to external impact,
for instance been dropped. Refer all servicing to
authorized service personnel.
17) Should the product break open because of damage,
service should only be done by qualified service
personnel.

Manufactured by:
Comfort Audio AB
Comfort Audio AB, Box154, SE-301 05 Halmstad, Sweden
Tel. [phone] Fax [phone]
Local US office:
Comfort Audio Inc, 350 South Northwest Hwy, Ste 300
Park Ridge, IL 60068 USA
T [phone]
[e-mail] www.comfortaudio.us
MA0364 Ver 1.26 Rev B 110729