Comfort audio DC10 User manual

Comfort Digisystem User Manual
Conference
Microphone
DC10
English

2Conference Microphone DC10
User Manual
Table of Contents Page
Introduction to the Comfort Digisystem 3
Functions of the Conference Microphone DC10 4
Functions - Charger unit 5
Getting Started 6
First Time Use 7
Menu 8
More Functions 15
Radio Range and Channels 19
Attached Accessories 20
Other original Accessories 20
Trouble Shooting 21
Service and Warranty 22
Technical Data 22
Important Safety Instructions 23

3
Conference Microphone DC10
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 Conference Microphone DC10 transmitter, the signal is transferred
digitally, resulting in an excellent clear sound.
Comfort Digisystem is tted with SST SecureStream Technology – a type of
digital technology allowing eavesdrop-secure radio transfer in real time.
PSE (Perceptual Speech Enhancement)
The Conference Microphone DC10 is equipped with high-power sound
processing that is used in the two omni modes (omnidirectional). The method
is based on emphasising meaningful parts of speech. Please visit our website
for more information on how this technology works.

4Conference Microphone DC10
Functions of the Conference Microphone DC10
Answering button
for Bluetooth
Pairing button
Menu control/
volume control for Bluetooth
On / Off Function indicator
Mode selector
Charging socket Mic/line in
Multifunction socket

5
Conference Microphone DC10
Functions - Charger unit
USB-socket
(for service)
Multifunction
socket
Charging
socket
Mic in
Line in

6Conference Microphone DC10
Getting Started
Charging
The Conference Microphone DC10 is chargeable. Charge the DC10 at least
ve hours before you use it for the rst time. An empty battery is fully charged
within ve 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, 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
Conference Microphone DC10

7
Conference Microphone DC10
First Time Use
Switch on the transmitter by pressing the On/Off button for around two
seconds.
The Conference Microphone DC10 always starts in Omni Mode Wide as
default. The position is easily changed using the mode selector on the long
side of the unit.
The various microphone positions are located in the following order:
- Zoom
- Omni – Narrow
- Omni – Wide
(default position)
- Music
Other functions are explained later in this manual.
WARNING!
The necklace should not be used if there is a risk of getting stuck,
e.g. in a machine or other objects.

8Conference Microphone DC10
Menu
Menu control
Three different selections can be made:
To access the menu, press the menu control:
Back
Communication
Channel
Pair
Bluetooth
Sound
Treble and Bass
Equalizer
Advanced settings
Inputs
Mic/Line in
Charger unit
Settings
Charge
Language
Key lock
Name
Factory reset
Activate key lock
About
Scroll up
Press/select
Scroll down

9
Conference Microphone DC10
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 manufacturer.
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
Channels .
Change channel:
1. Choose Channel in the menu.
2. Choose transmitter or receiver (this applies only to
units with both transmitter and receiver).
3. 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
usually require a licence – see the section Radio Range and Channels .
FFC (Free Frequency Check) indicates in green the suitable frequencies for
the specic environment. Please note! Switch off your other Digisystem trans-
mitters for correct result.
FFC dB indicates the noise level in dB for each channel. The higher the (-)
value, the lower the risk of interference.
Pair
To use a receiver and transmitter together, they must be paired. All transmit-
ters and receivers are default paired at the factory and will work together.
NB! To prevent eavesdropping, a new code key must be generated and trans-
mitted between the units by pairing.

10 Conference Microphone DC10
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.
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.
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.
Units with both transmitters and receivers built in
Comfort Digisystem units with both transmitters and receivers built-in can be
paired separately.
When opening the pairing menu, choose the concerning unit (transmitter/
receiver). In units with both transmitters and receivers, 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 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.

11
Conference Microphone DC10
BluetoothTM
Here you can activate Bluetooth to be able to pair the Conference Microphone
DC10 with a telephone or mobile. For detailed user information, see chapter
More Functions - Bluetooth .
Sound
Treble and Bass
Treble and Bass control that allows simple adjustment of the unit’s equalizer.
Press the answering button to return to the menu.
Equalizer
You can obtain ne tuning of the sound characteristics by changing the level
at various frequencies, from low to high frequencies. The level can be
increased or reduced at the mid-range frequencies 63 Hz, 125 Hz, 250 Hz,
500 Hz, 1 kHz, 2 kHz, 4 kHz and 8 kHz. Press the answering button to return to
the menu.
Advanced settings
Here you can adjust PSE compensation in the modes Omni – Wide and Omni –
Narrow. Settings are saved separately for each mode.
The effect of increasing this value is that the volume will increase when the
overall sound level in the environment raises. If the surrounding sound is
too high, you can increase PSE compensation and the overall sound level is
raised.
For someone who feels that the volume gets too loud in noisy environments,
PSE compensation can be reduced.
On delivery, Omni – Wide is set to +2 and Omni – Narrow to +6.
Inputs
Mic/Line in
This is where the function for the mic/line in socket is selected:
- Line in (for TV or computer etc.)
- Microphone in (for an external microphone, e.g. a clip-on microphone)
- Headphones out (for testing the unit with headphones)
Here you can also adjust the level for Line in, Microphone in and headphones:
- Line gain
- Mic gain
- Headphones

12 Conference Microphone DC10
When connecting a signal source to Line in (e.g. a TV), Line in mix is selected
to also receive surrounding sound through the Conference Microphone DC10.
Charger unit
Here you can adjust the level for Line in and Microphone in. Line in mix can
also be selected for use with charger unit.
It is not possible to use both sockets at the same time. In this case an error-
message is shown: Disconnect from Mic/Line.
Settings
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
Here you can select the menu language.
Key lock
When this function is activated, all buttons are locked automatically as soon
as the display fades out. It can be quickly activated; see the section Activate
key lock .
Name
Here the text to be displayed is selected. Choose symbols with the menu con-
trol. Select to save and xto close without saving. To move the cursor during
editing, use the symbols > and <.
Factory reset
Resets the unit to the factory settings. Also deletes all pairing information
(SST and Bluetooth). To prevent eavesdropping a new code key must be gen-
erated.
Activate key lock
Here you can activate the key lock directly when the menu control has been
pressed. Or you can press the menu control, followed by arrow up (mode se-
lector) on the long side of the unit.
About
Here you nd software information.

13
Conference Microphone DC10
More Functions
Function indicator (LED)
The function indicator shows the unit's mode settings.
Music position = Flashes green once every three seconds
Omni position – Wide = Flashes green twice every three seconds
Omni position – Narrow = Flashes green three times every three seconds
Zoom position = Flashes green four times every three seconds
During charging the indicator shows red. When the charging is completed, the
indicator shows green. The indicator stays red even when the battery is fully
charged, if the unit is On during charge.
When the battery level gets low, the indicator ashes red. (Check the battery
status on the display)
Once the unit has been set to receive pairing information, the indicator ash-
es green quickly.
When receiving pairing information, the indicator shows green for three sec-
onds.
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 connected, the indicator
ashes blue ve times.
During an ongoing telephone call, the indicator ashes blue every second
second.
When Clear settings is selected, the indicator ashes blue ten times.

14 Conference Microphone DC10
BluetoothTM
The Conference Microphone DC10 can be connected to two Bluetooth tele-
phones at the same time. The person you are talking to can hear you through
the microphones on DC10. His/Her voice is sent 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 tele-
phones have been paired (and connected) the gure 2 appears instead.
Some DECT telephones are only connected during incoming or outgoing calls.
In such cases, the unit can also display a 1, even if a mobile and a DECT tele-
phone have been paired with the unit.
The DC10 supports both headset and handsfree proles for Bluetooth. The
prole is chosen automatically during pairing.
Application
Pairing with telephones:
To pair the unit with telephones, see the section Communication .
Activate Bluetooth:
Enter the menu Communication - Bluetooth - Enable
Bluetooth menu:
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 (Communication - Bluetooth - Pair BT- Pair Mobile) (code 1234)
is used to pair a mobile with the DC10.
Pair Phone (Communication - Bluetooth - Pair BT- Pair Phone) (code 0000) is
used to pair a landline-based, wireless (DECT) or mobile phone with the DC10.
Select Clear settings (Communication - Bluetooth - Pair BT- Clear settings)
to clear all information about paired units.
Please note: After this the Bluetooth units have to be paired again (so that Blue-
tooth can work).
You can use Mix level to select how loud your own voice is during a phone call.

15
Conference Microphone DC10
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 transferred via the relevant
Bluetooth connection (depending on the telephone's settings) to the DC10.
One of the Bluetooth connections (telephone, code 0000) has priority. This
means that the voice dialling and re-dialling functions only work in this tele-
phone 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 button approx. two
seconds.
Microphone position:
During a telephone call, it is possible to select between the modes Omni –
Wide, Omni – Narrow and Zoom, using the mode selectors on the long side of
the unit.
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.
When using land line/cordless and mobile phones at the same time On some
land line/cordless telephones the Bluetooth connection 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”.
Some mobiles require further adjustments to obtain sufciently loud sound. For example
increase the level manually in the media player’s equalizer (SonyEricsson).

16 Conference Microphone DC10
Charger unit
The Conference Microphone DC10 is delivered with a charger unit. Apart
from charging the microphone, the unit can be connected to external sound
sources. There are 2 sockets at the right hand short side of the charger unit,
marked 1 and 2 (look underneath).
At socket 1, an external microphone can be connected. At socket 2, a stronger
signal source, such as TV, MP3, radio etc. can be connected. It is not pos-
sible to use both sockets at the same time. In that case, an error-message is
shown: Disconnect from Mic/Line. The level of these signal sources can then
be adjusted under Inputs – Charger unit.

17
Conference Microphone DC10
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 environment you are in. Like all radio systems, Comfort
Digisystem 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. However, you should always check with the
frequency assignment 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

18 Conference Microphone DC10
Attached Accessories
Necklace
Two different lenghts.
Clip-on microphone
Charger
Charger unit
Split cable for charging
Audio cables
Other original Accessories
Car charger
The car charger is designed for cars with a 12 volt (-) earthed electrical sys-
tem. The charger has short-circuit and automatic overload protection. Dis-
connect the charger from the socket after use.
Boom microphone
Headset microphone.
Earworn microphone
A microphone that is attached around the ear.
For other accessories, please visit our website,
www.comfortaudio.com

19
Conference Microphone DC10
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 Settings in
the menu.

20 Conference Microphone DC10
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: 115 x 62 x 14 mm
Weight: 90 g
Frequency range: 768 - 872 MHz
Antenna: Built-in
Operating time: Up to ten hours
Battery: Chargeable Li-Polymer
Charging time: Approx. ve hours
Microphones: Combination of four built-in microphones, directional
and omnidirectional
Connections: Mic/Line in, socket for testing with headphones
!