Comfort audio Comfort Digisystem DM10 User manual

1
Microphone DM-10
User Manual
Microphone
DM-10
English

2Microphone DM-10
User Manual
Table of Contents Page
Introduction to the Comfort Digisystem 3
Functions of the Microphone DM-10 4
Getting Started 5
First Time Use 6
Menu 7
More Functions 13
Radio Range and Channels 15
Original Accessories 16
Trouble Shooting 17
Service and Warranty 18
Technical Data 18
Important Safety Instructions 19

3
Microphone DM-10
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.
Using the Microphone DM-10 transmitter, the signal is
transferred digitally, resulting in an excellent clear sound.
Comfort Digisystem is tted with SecureStream
Technology – a type of digital technology allowing eaves-
drop-secure radio transfer in real time.
SecureS t ream
Technology

4Microphone DM-10
Function button
Functions of the Microphone DM-10
Function indicator
Pairing button
Input for external
sound source
Menu control
On / Off
Charging socket
Display Microphone DM-10
Clips
Microphone

5
Microphone DM-10
Getting Started
Charging
The Microphone DM-10 is chargeable. Charge the DM-10
at least two hours before you use it for the rst 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 lled with green col-
umns and the functions indicator shows green the unit is
fully charged and switches to automatic oat charging.
A fully charged battery has an operating time of up to ten
hours. Battery lifetime is up to ve years. You must not
change the battery yourself; please contact your point of
purchase.
Please note:
Only use the charger
supplied by Comfort Audio AB.
Connecting a charger to the
Microphone DM-10

6Microphone DM-10
First Time Use
Switch on the transmitter by pressing the On/Off button
for around two seconds.
Connect clip-on-microphone or any other microphone if
desired.
The microphone DM-10 is a microphone for closer range.
It works best within approx. 30 cm.
The clip-on-microphone can be attached to your clothes
with its clip.
DM-10 can be attached with its clip or carried around the
neck with the delivered neck loop (2 lengths available).
Other functions are explained later in this manual.

7
Microphone DM-10
Menu
Menu control
Three different selections can be made:
To access the menu, press the menu control:
Back
Communication
Channel
Pairing
Function
Silence button
Push to talk
Push/Cont.
FCR
FCR indicator
Settings
PIN-code
Charging
Language
Name
Input
Key lock
About
Scroll up
Press/select
Scroll down

8Microphone DM-10
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 manu-
facturer.(This does not apply to units with both sender
and receiver. In this case the transmitter/receiver are
adjusted as described in chapter Radio range and Chan-
nels ). To change channel, select Channel in the menu.
Choose transmitter or receiver (this applies only to units
with both transmitter and receiver). Select a new channel
using the menu control.
Channel information is also given when the units are
paired. Channels 1, 2 and 3 are free channels in most
European countries that do not require a licence. Under
Extended more channels can be selected, but these usu-
ally require a licence – see the section Radio range and
Channels .
FFC (Free Frequency Check) indicates in green the suit-
able frequencies for the specic environment. Please
note! Switch off your other Digisystem transmitters for
correct result.
Pairing
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. To prevent eaves-
dropping, a new code key must be generated and trans-
mitted between the units by pairing.
Transmitting/receiving of pairing information along with a

9
Microphone DM-10
new code can be performed from any Comfort Digisystem
unit with a display. To pair units without a display, see sec-
tions Pairing (via pairing button) and Pairing (Connector
DT-10) for more information. Pairing information or a new
code key can be received by several activated units.
Comfort Digisystem units with both transmitters and
receivers built-in can be paired separately. When opening
the pairing menu, choose the concerning unit (transmit-
ter/receiver). In units with both transmitters and receiv-
ers, the pairing button controls the transmitter. The
transmitter and receiver are paired separately in these
units. The code key is always the same for the transmitter
and the receiver when these are built-in in the same unit.
The easiest way to get the same code key in the whole
Digisystem, when using units with both transmitter and
receiver built-in, is to generate a new code key from the
combined unit; in that way the built-in receiver gets the
same code as the rest of the system.
Pairing (via menu)
Select Receive info on one unit. Ready to receive pair-
ing info is shown in the display. Select New code on the
other unit; select Yes. 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). To pair another unit into
your coded system, select Send info instead on one of
your paired units.
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
button. One brief press of the button opens the Pairing
menu. Two brief presses activate the Send info function.
One long press activates the Receive info function.

10 Microphone DM-10
Pairing (Connector DT-10)
The connector cannot send information, only receive
it. To activate the position Receive info, the connector
must be in operation (position I or II) and connected to an
operating hearing aid. The selector is then quickly moved
to position 0 and back to the operating position (I or II).
The connector can now receive pairing info. If no info is
received by the connector, after a short time this returns
automatically to the previous setting.
Function
Here you can adjust the function button. If no choice
has been made, the microphone sends continuously the
sound it takes up.
More settings are possible, see below. The chosen set-
ting shows in the display. For more information about the
function indicator see More functions .
Silence button
In this setting you can shut off the microphone so that no
sound is sent when you press the function button.
Push to talk
DM-10 only sends when you press the function button.
Push/Cont
In this setting DM-10 works like described above under
Push to talk , but by pressing the menu control down
(scrolling down) the microphone is switched to send con-
tinuously the sound it takes up.
This function may be useful when it is impossible to press
the function button, e.g. during lectures or presentations
etc.
FCR (Free Channel Request)
This function prevents DM-10 from sending on frequen-

11
Microphone DM-10
cies which are already taken by other transmitters, e.g.
when several DM-10 are set on Push to talk.
If transmission is not possible, this is shown in the dis-
play together with the function indicator. Is the function
button pressed in and transmission is not possible, press
the function button again and try to send again (it is not
enough to keep the button pressed).
FCR Indicator
Is the FCR indicator activated, the function indicator
shows red if the channel is occupied – even if the function
button is not pressed.
Settings
PIN code
Here you can turn the PIN code function on and off (se-
lected 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:
- Function button: Locks all functions in the “Function
button” 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
The 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.
Charging
Here you can activate the Auto Power Off function to shut

12 Microphone DM-10
down the unit automatically during charging.
Language
Here you can select the menu language.
Name
Here the text to be displayed is selected. Choose symbols
with the menu control. Select to save and xto close
without saving. To move the cursor during editing, use the
symbols > and <.
Input
Here you can choose which additional input should be
used.
- Extern Mic (for external microphones, e.g. clip-on-
microphones)
- Line-in (e.g. for TV- or PC-cable)
You can even adjust the level for Extern Mic and Line-in in
this menu.
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
Here you nd software information.

13
Microphone DM-10
More Functions
Function indicator (LED)
The function indicator shows the unit’s status, depending
on its setting.
On normal operation, the indicator ashes 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
ashes red (check the battery status on the display).
Once the unit has been set to receive pairing information,
the indicator ashes green quickly.
When receiving pairing information, the indicator shows
green for three seconds.
When sending pairing information, the indicator ashes
red ve times.
When using the Push to talk-function, the indicator
shows green when transmission is possible and the
microphone has been activated. If transmission is not
possible because the channel is occupied (how to use
FCR, see section Function ), the function indicator shows
red.
Is FCR indicator activated, the function indicator shows
red when the channel is occupied.
When using the function silence button, the indicator
shows red.

14 Microphone DM-10
Coloured clips
A number of different coloured clips are available to
replace the black cover. This might be useful if you use
several microphones at the same time.

15
Microphone DM-10
Radio Range and Channels
The transmitter and receiver have built-in antennas. The
radio range between the units is around 30 metres. This
may however vary depending on the particular environ-
ment you are in. Like all radio systems, Comfort Digisys-
tem communicates on specic 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.
In most European countries, channels 1-3 (863.250 –
864.750 MHz) may be used for hearing products. How-
ever, you should always check with the frequency assign-
ment authority in your own country which channels are
free and which require a licence.
In addition to channels 1-3, under Extended there are
several channels in bands A-F, which require a licence in
most European countries:
A 768 - 790 MHz
B 854 - 863 MHz
C 790 - 800 MHz
D 800 - 820 MHz
E 820 - 854 MHz
F 865 - 872 MHz

16 Microphone DM-10
Original Accessories
Car charger
The car charger is designed for cars with a 12 volt (-)
earthed electrical system. The charger has short-circuit
and automatic overload protection. Disconnect the char-
ger from the socket after use.
Head-microphone
Microphone which can be attached around the head
Ear-microphone
Microphone which can be attached around an ear
Charging stand
The charging stand is connected to the provided charger.
Several charging stands can be connected and used with
one charger. If you use more than two charging stands, a
bigger charger is necessary.
Desk stand
Desk stand for the Microphone DM-10.
For other accessories, please visit our website,
www.comfortaudio.com

17
Microphone DM-10
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. There
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 Charging in the menu.

18 Microphone DM-10
!
Service and Warranty
Comfort Audio AB provides a comprehensive warranty
for two years as from the date of delivery. This covers all
defects of manufacture and materials. Defects caused by
careless handling or intervention inside the product or its
accessories are not covered by the warranty.
Under normal use, battery lifetime is up to ve years.
Contact your point of purchase once it is time to change
the battery.
You are always welcome to contact us at Comfort Audio if
you have any questions.
Technical Data
Type of transmitter: SST – SecureStream Technology
Range: Approx. 30 m
Dimensions: 84 x 39 x 14 mm
Weight: 45 g
Frequency range: 768 - 872 MHz
Antenna: Built-in
Operating time: Up to ten hours
Battery: Chargeable Li-Polymer
Charging time: Approx. two hours
Microphone: Built-in
External input: Mic/Line in

19
Microphone DM-10
Important Safety Instructions -
Read these before using your product
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) FolIow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not use near any heat sources such as radiators
heat registers stoves, or other apparatus (including
ampliers) that produce heat.
8) Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades
with one wider than the other. A grounding type plug
has two blades and a third grounding prong. The wide
blade or the third prong are provided for your safety.
If the provided plug does not t into your outlet
consult an electrician for replacement of the obsolete
outlet. (Only when using polarized plug)
9) Protect the power cord from being walked on or
pinched particularly at plugs convenience
receptacles. and the point where they exit from the
apparatus.
10) Only use attachments/accessories specied by
Comfort Audio AB.
11) Unplug this apparatus during Iightning storms or
when unused for long periods of time.
12) Refer all servicing to qualied service personnel.
Servicing is required when the apparatus has been
damaged in any way such as power-supply cord or
plug is damaged Iiquid has been spilled or objects
have fallen into the apparatus, the apparatus has
been exposed to rain or moisture does not operate
normally or has been dropped.
13) Start listening at a low volume.
14) Too high a volume can seriously damage your

20 Microphone DM-10
hearing.
15) Don’t dissasemble the product.
16) Should the product break open because of damage,
service should only be done by qualied service
personnel.
17) 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.
18) The product contains sensitive electronic equipment
and must be handled carefully.
19) Never charge product in closed, unaired spaces such
as handbags, cases or other closed storage bags.
20) Only use batteries and power supply specied by
Comfort Audio AB.
21) You must not change the battery yourself; please
contact your point of purchase.
22) CAUTION! Danger of explosion if battery is incorrectly
replaced.
23) The product shall not be exposed to excessive heat
such as sunshine, re or the like.
Subject to change