Comfort audio DM80 User manual

1
Microphone BT DM-80
User Manual
Microphone BT
DM-80
English

Microphone BT DM-80
2
User Manual
Table of Contents Page
Introduction to the Comfort Digisystem 3
Presenting the Microphone BT DM-80 3
Functions of the Microphone BT DM-80 4
Getting Started 5
First Time Use 6
Menu 7
More Functions 13
Radio Range and Channels 16
Attached Accessories 17
Other original Accessories 17
Troubleshooting 18
Service and Warranty 19
Technical Data 19
Important Safety Instructions 20

3
Microphone BT DM-80
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 BT DM-80 transmitter, the signal is
transferred digitally, resulting in excellent, clear sound.
Comfort Digisystem is tted with SecureStream
Technology - a type of digital technology allowing eaves-
drop-secure radio transfer in real time.
Presenting the Microphone BT DM-80
A microphone that not only serves as a conference micro-
phone, but can also be connected to telephones. The
DM-80 can be connected via Bluetooth to a mobile phone/
portable phone, and the microphone can be connected via
a cable to a telephone using a 2.5 mm headset socket.
The DM-80's built-in microphones are used to speak into,
while incoming sound from the telephone is transmitted
in a wireless, interception-secure link to any Digisystem
receiver.
The DM-80 has both an omnidirectional microphone and
a directional microphone for use in environments with
more disruptive background noise. The large, practical
answering button can be used to answer calls with a
Bluetooth connection, even if you have your phone in your
pocket, for example.
SecureS t ream
Technology

Microphone BT DM-80
4
Functions of the Microphone BT DM-80
Function indicator
Pairing button
Multifunction socket
Menu control
On / Off
Charging socket Display
Microphone BT DM-80
Answering button
Clip
Microphone
Answering button

5
Microphone BT DM-80
Getting Started
Charging
The Microphone BT DM-80 is chargeable. Charge the DM-
80 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
columns and the function indicator shows green, the unit
is fully charged and switches to automatic oat charging.
A fully charged battery has an operating time for up to
seven hours in normal microphone mode, four hours'
call time via Bluetooth or 48 hours in standby mode with
Bluetooth transmission only. 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.
Display
Microphone BT DM-80
Connecting a charger to the
Microphone BT DM-80

Microphone BT DM-80
6
First Time Use
Switch on the transmitter by pressing the On/Off button
for around two seconds. Function indicator ON.
Connect the clip-on-microphone (or other original micro-
phone) or headset cable if desired.
The Microphone BT DM-80is 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.
The DM-80 can be secured using the clip or hung around
the neck using the neck pendant provided (two lengths).
The menu control can be used to select omni (omnidirec-
tional) or zoom (directional). To do this, move the menu
control ups (zoom) or down (omni). The selection is acti-
vated when you press the menu control.
Zoom microphone mode is useful in environments with
disruptive background noise.
- Zoom
- Omni
Please note: Omni mode is automatically activated during
charging. However, when you make a call when zoom
mode is preselected, this mode will be activated.
Other functions are explained later in this manual.

7
Microphone BT DM-80
Menu
Menu control
Three different selections can be made:
To access the menu, press the menu control:
Back
Communication
Channel
Pairing
Bluetooth
Telephone
Connections
External mic
Line in
Telephone
Mic gain
Line gain
Settings
PIN code
Charging
Language
Name
Key lock
About
Scroll up
Press/select
Scroll down

Microphone BT DM-80
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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. (This does not apply to units with both transmitter
and receiver). To change channel, select Channel under
Communication in the menu. 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.
If the message Channel combination not possible ap-
pears during pairing, this indicates that the selected
frequency is outside the frequency range within which the
unit can transmit/receive. Check possible channels in the

9
Microphone BT DM-80
Communication - Channel menu.
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 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 code
key is always the same for the transmitter and the re-
ceiver when these are built-in in the same unit. The easi-
est way to get the same code key in the whole Digisystem,
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.

Microphone BT DM-80
10
One long press activates the Receive info function.
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.
Bluetooth
Here you can activate Bluetooth to be able to pair the
Microphone BT DM-80 with a telephone or mobile.
When BT only is selected, the transmitter is active only
when the telephone call is connected via Bluetooth or a
headset cable is connected and activated.
Pair Mobile (code 1234) is used to pair a mobile with the
DM-80.
Pair Phone (code 0000) is used to pair a landline-based,
wireless (DECT) or mobile phone with the DM-80.
Select Reset BT (under the Pair Bluetooth menu) to clear
all information about paired units.
Please note: After this the Bluetooth units have to be paired
again (so that Bluetooth can work).
You can use Mix level to select how loud your own voice is
during a phone call.
Under Mic mode in the Communication -Bluetooth menu
you can preset the desired microphone mode for Blue-
tooth communication.

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Microphone BT DM-80
When using land line/cordless and mobile phones at the same
time: On some land line/cordless telephones the Bluetooth connec-
tion is not active if no call is being made. This can cause a time delay
before Bluetooth is connected for an incoming call. In certain cases the
time delay can be avoided by pairing a cordless telephone in the “Pair
Mobile” prole, but this can cause problems with initiating outgoing
calls from the land line/cordless telephone. For more information, see
“More Functions”.
Telephone
Under the Telephone menu you can congure the DM-80
to function as a telephone headset. Connect the DM-80 to
the telephone's multifunction socket via the headset ca-
ble supplied. Please note: When the headset cable is con-
nected to the DM-80, the built-in microphone is switched
off and only works when a phone call is made.
- Out level adjusts the level of outgoing sound level for
telephony (not BT).
- In level adjusts the level of incoming sound level for
telephony (not BT).
This level can also be adjusted using the menu control
when the headset cable is connected. The change of vol-
ume is shown on the display.
- Mic mode : here you can preset the desired microphone
mode for telephony (not BT) (default setting is zoom).
Connections
Here you can select what the multifunction socket is to be
used for.
- External Mic (for external microphone, e.g. lapel micro-
phone)
- Line in (for, e.g., a TV or computer cable)
- Telephone activates the socket on the DM-80 for use as
a headset. Same function as Activate in the Communica-
tion - Telephone menu.
The level of the External mic or Line in can also be ad-
justed in this menu.

Microphone BT DM-80
12
Settings
PIN code
Here, you can activate and change your PIN code and lock
other selections you have made in the menu.
Charging
Here you can activate the Auto Power Off function to shut
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 <.
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 BT DM-80
More Functions
Function indicator (LED)
The function indicator shows the unit's status depending
on its setting.
Omni mode = Flashes green once every three seconds
Zoom mode = Flashes green twice every three seconds
When the battery level gets low, the indicator ashes red
for the selected sound registration mode (check the bat-
tery status on the display).
When charging the indicator shows red.
When the unit is fully charged, the green indicator is lit.
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 the pairing mode for Bluetooth has been activated,
the indicator shows blue.
When a Bluetooth telephone has been successfully con-
nected, the indicator ashes blue ve times.
During an ongoing telephone call, the indicator ashes
blue every second second.
When Reset BT is selected, the indicator ashes blue ten
times.

Microphone BT DM-80
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BluetoothTM
The Microphone BT DM-80 can be connected to two Blue-
tooth telephones at the same time. . During a telephone
call the DM-80 is used as a hands-free that receives the
sound and transfers it on to the call partner. The sound
from the call partner's telephone is sent from the DM-80
to a paired Digisystem receiver.
When Bluetooth is activated in the menu, the Bluetooth
symbol is shown in the display. If only one telephone has
been paired (and connected) with the unit, the gure 1
appears at the Bluetooth symbol in the display. If two
telephones have been paired (and connected) the gure 2
appears instead.
Some DECT telephones are only connected during in-
coming or outgoing calls. In such cases, the unit can also
display a 1, even if a mobile and a DECT telephone have
been paired with the unit.
The DM-80 supports both headset and hands-free pro-
les for Bluetooth. The prole is chosen automatically
during pairing.
Application - BluetoothTM
Answer an incoming call:
Press the answering button briey (around 1/2 second),
or answer with the telephone.
End a call:
Press the answering button briey (around 1/2 second),
or end the call with the telephone.
Make a call:
When you make a call, the sound is automatically trans-
ferred via the relevant Bluetooth connection (depending
on the telephone’s settings) to the DM-80.

15
Microphone BT DM-80
One of the Bluetooth connections (telephone, code
0000) has priority. This means that the voice dialling and
re-dialling functions only work in this telephone if two
telephones are connected.
- Voice dialling is activated by briey pressing (approx.
1/2 second) the answering button.
- Re-dialling is activated by pressing the answering but-
ton approx. two seconds.
Microphone position:
When making a call Bluetooth, microphone mode can be
selected in the Communication - Bluetooth - Mic mode
menu.
Pairing with telephones:
To pair the unit with telephones, see the section
Communication .
Volume control:
During a telephone call, the volume can be adjusted by
using the menu control on the long side of the unit (this
adjusts the telephone’s volume control). The display
shows the current volume.
Some mobiles require further adjustments to obtain sufciently loud
sound. For example, increase the level manually in the media player's
equalizer (SonyEricsson).
Please note: It is not possible to initiate a Bluetooth call
(activate voice dialling or re-dialling) using the answering
button at the same time as Telephone is activated and the
headset cable is connected to the DM-80. The reason for
this is that it must not be possible for Bluetooth calls to
be activated by mistake during an ongoing phone call. It is
still possible, however, to respond to incoming Bluetooth
calls in the usual way.

Microphone BT DM-80
16
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 as to which channels
are free and which require a licence.
In addition to channels 1-3, under Extended there are
bands A-F, which require a licence in most European
countries:
B 854 - 863 MHz
E 833 - 854 MHz
F 865 - 872 MHz

17
Microphone BT DM-80
Attached Accessories
Neck pendant
Two different lengths.
Headset cable
For connection to telephones with 2.5 mm headset sock-
ets.
Clip-on microphone
Charger
Branch cable for charging
Audio cables
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.
Other original Accessories
Boom microphone
Headset microphone.
Earworn microphone
A microphone that is attached around the ear.
Charging stand
For other accessories, please visit our website,
www.comfortaudio.com

Microphone BT DM-80
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Troubleshooting
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/envi-
ronment.
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.
For more detailed troubleshooting,
visit our website at www.comfortaudio.com

19
Microphone BT DM-80
!
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: 832 - 872 MHz
Antenna: Built-in
Operating time: Up to seven hours in normal
microphone mode, four hours'
call time via Bluetooth or 48 hours
in standby mode with Bluetooth
transmission only.
Battery: Chargeable Li-Polymer
Charging time: Approx. two hours
Microphones: Built-in, zoom and omnidirectional
Input/output: Line in / TV microphone /
headset cable

Microphone BT DM-80
20
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