SST DM-20 Manuel utilisateur
1
Microphone Mix DM-20
User Manual
Microphone Mix
DM-20
English
2Microphone Mix DM-20
User Manual
Table of Contents Page
Introduction to the Comfort Digisystem 3
Presenting the Microphone Mix DM-20 3
Functions of the Microphone Mix DM-20 4
Getting Started 5
First Time Use 6
Menu 7
More Functions 12
Radio Range and Channels 15
Attached Accessories 16
Other original Accessories 16
Trouble Shooting 17
Service and Warranty 18
Technical Data 18
Important Safety Instructions 19
3
Microphone Mix DM-20
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 Mix DM-20 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.
Presenting the Microphone Mix DM-20
The Microphone Mix DM-20 is an advanced lecture micro-
phone with built-in receiver which easily attaches to the
clothing of the person talking. The sound is mixed with
that from another microphone and transmitted to one or
more receivers.
The microphone has an input for a clip-on microphone
or head microphone. The DM-20 is equipped with a voice
AGC (Automatic Gain Control) to maintain a comfortable
sound level at all times.
SecureS t ream
Technology
4Microphone Mix DM-20
Functions of the Microphone Mix DM-20
Function indicator
Pairing button
Input for external
sound source
Menu control
On / Off
Charging socket
Display
Microphone Mix
DM-20
Function button
Clips
Microphone
5
Microphone Mix DM-20
Getting Started
Charging
The Microphone Mix DM-20 is chargeable. Charge the
DM-20 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
seven 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 Mix DM-20
6Microphone Mix DM-20
First Time Use
Switch on the transmitter by pressing the On/Off button
for around two seconds. Function indicator ON
Connect clip-on-microphone or any other microphone if
desired.
The microphone DM-20 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-20 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.
DM-20
7
Microphone Mix DM-20
Menu
Menu control
Three different selections can be made:
To access the menu, press the menu control:
Back
Communication
Channel
Pairing
Receiver on
Function
Silence button
Settings
PIN-code
Charging
Language
Name
Input
Key lock
About
Scroll up
Press/select
Scroll down
8Microphone Mix DM-20
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. 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 specic environment. Please
note! Switch off your other Digisystem transmitters for
correct result
When selecting a channel for units with a built-in trans-
mitter and receiver, refer to the
Built-in receiver
section.
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-
9
Microphone Mix DM-20
mitted between the units by pairing.
If the message Channel combination not possible shows,
see the
Built-in receiver
section.
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.
DM-20
10 Microphone Mix DM-20
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.
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.
Receiver ON
Activates the built-in receiver
Function
Here you can adjust the function button. If no choice
has been made, the microphone sends continuously the
sound it takes up.
Silence button
In this setting you can shut off the microphone so that no
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