3M Peltor DECT-Com II User manual

3MTM PeltorTM DECT-Com IITM
Full Duplex Wireless Intercom
Instruction Manual

Antenna
Function indication ring
Headset connector
[M] Mode
LED (Light Emitting Diode)
Clip
[+] Up
[–] Down
PTT1 Push-To-Talk 1
PTT2 Push-To-Talk 2
PTT3 Push-To-Talk 3
(Fig. A)
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Button Function
[M] Switch DECT-Com II unit on/off
Select function in the menu
[+] Increase the level of selected function
[–] Decrease the level of selected function
[M] & [+] Switch DECT-Com II unit on as base
[M] & [–] Switch DECT-Com II unit on as portable
[PTT1] Manually transmit in DECT-Com conference 1
Press twice to talk in conference 1
Press once to listen in conference 1
For latest revised full user’s instructions, please see www.3m.com/peltorcomms on the Internet.
Look in section “Rest of the world” and find “PDF LIBRARY”, where you can read or download
multilingual information about the 3M Peltor DECT-Com II system.
Button Function
[PTT2] Manually transmit in DECT-Com conference 2
or with a connected auxiliary equipment.
Press twice to talk in conference 2
Press once to listen in conference 2
[PTT3] Manually transmit in DECT-Com conference 3
or with a connected auxiliary equipment.
Press twice to talk in conference 3
Press once to listen in conference 3
[+] & [–] All call (simplex transmission)
QUICK GUIDE

INDEX
1 INTRODUCTION
2 MAIN UNITS
2.1 Preparing the Main Unit
2.2 Peltor DECT-Com II System
2.3 Switching a Main Unit On and Off
2.4 Base/Portable Unit
2.5 Portable Unit
3 LOG IN TO OR OUT OF A CONFERENCE
3.1 Log In as a Listen-Only Conference Member
3.2 Log In as an Active Conference Member
3.3 Log In as an Active Conference Member in another Conference Group
3.4 Autotalk
4 CONTROLS
4.1 Mode
4.2 PTT (Push-To-Talk)
4.3 All-Call (Emergency Call etc.)
4.4 Locked buttons
5 OUT OF RANGE
6 POWER SUPPLY
6.1 Internal Batteries
6.2 External Batteries
6.3 Fixed Mounted Power Supply
6.4 Mains Adapter
7 ANTENNAS
7.1 General Antenna
7.2 Omnidirectional Vehicle Antenna
8 EXTERNAL EQUIPMENT
8.1 External Equipment
9 PELTOR DECT-Com II UNITS
9.1 MAIN UNITS, SPECIAL 1.9 GHz VERSION
9.2 ACCESSORIES AND SPARE PARTS
10 TECHNICAL DATA OF MAIN UNIT
11 APPROVALS
12 WARRANTY
13 PROGRAMMING DECT-Com II UNITS
14 DECLARATION OF CONFORMITY
15 VOICE MESSAGES
The Sound Solution
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PELTOR DECT-Com II
1 INTRODUCTION
Peltor DECT-Com II is a wireless intercom system for simple and efficient duplex communication with up to 9 active users talking in full duplex, plus up to 40
listeners with possibility to “break in” to the conference. Another user, who wants to talk in the conference, will take the place of one of the first users, who will
be relegated to a “listen only”.
There are basically two versions of the DECT-Com II main unit; portable units and base/portable units.
The base/portable units (DC2912 and DC2915) can be started as base or portable units, which is not possible with the portable unit (DC2911).
Peltor DECT-Com II operates on the 1.9 GHz band, which is licence free in USA and Canada. Please check with your local authorities!
Due to low output power and high frequency it is a short range communication system. The nominal line of site working range is approximately 275 yards
outdoors. Indoors, the working range may be less due to obstacles.
Read this information carefully before use and save for future reference!
Never modify or alter any product!
3M does not accept liability of any kind, be it direct or consequential (including, but not limited to, loss of profits, business and/or goodwill) arising
from reliance upon any information herein provided by 3M. The user is responsible for determining the suitability of the products for their intended
use. Nothing in this statement will be deemed to exclude or restrict 3M’s liability for death or personal injury arising from its negligence.
2 MAIN UNITS
2.1 PREPAIRING THE MAIN UNIT
Open the main unit box.
Mount one of the three antenna rings on the antenna connector.
The indication rings should be used to seal the antenna; green color for portable units, red for base units or black for “discrete” use.
NOTICE! The ring should be turned correctly to fit on the screw nut!
Screw the antenna tightly on top of the ring.
Mount the battery in the battery compartment and close the lid with the screw.
Mount the attachment clip on the back of the unit. Turn it to the tagged end down!
To charge the battery, place the unit in a charger/holder.
2.2 PELTOR DECT-Com II SYSTEM
2.2.1 MAIN UNITS, GENERAL 1.9 GHz
DC2911 1.9 GHz portable unit
DC2912 1.9 GHz base/portable unit
DC2915 1.9 GHz Ext. base/portable unit
2.3 SWITCHING A MAIN UNIT ON AND OFF
• Switch a DECT-Com II main unit on by pressing the [M] button.
In a headset, connected to the headset connector on the unit, a voice confirmation “POWER ON” or “BASE, POWER ON”
is given and the LED (light emitting diode) is flashing, indicating that the unit is in set up mode.
When a base unit is ready for use, a voice message “BASE, GROUP 1” is given. The LED on the unit is flashing slower.
When a portable unit is ready for use, a voice message “GROUP 1” is given. The LED on the unit is lit.
Notice: All units are always started in listen only mode in group 1.
2.3.1 SWITCHING A MAIN UNIT OFF
• Switch a unit off by pressing and holding the [M] button for approximately 2 seconds.
A voice confirmation “POWER OFF” is given, the LED is unlit, and the unit is turned off.
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2.4 BASE/PORTABLE UNIT
2.4.1 SWITCHING A BASE/PORTABLE UNIT ON
• Switch a base unit on by pressing the [M] button.
In a headset, connected in the headset connector on the unit, a voice confirmation “BASE, POWER ON”
is given and the LED (light emitting diode) is flashing, showing that the base unit is setting up the system.
Notice: Initially, a base/portable unit is starting up as a base. (See also
ALTERNATIVE OPERATION MODES OF BASE/PORTABLE UNITS below.)
After approximately 20 seconds, the system is ready and a voice message “GROUP 1” is given. The LED on the unit is flashing
slower, showing that the base unit is ready for use and portable units can be logged on. (The LED can be switched off with use
of special DECT-Com II software.)
2.4.2 SWITCHING A BASE/PORTABLE UNIT OFF
• Switch a base unit off by pressing and holding the [M] button for approximately 2 seconds.
A voice confirmation “POWER OFF” is given, the LED is unlit, and the unit is turned off.
2.4.3 ALTERNATIVE OPERATION MODES OF BASE/PORTABLE UNITS
By different start-up sequences the base/portable main units can be set up to work either as a base or as a portable unit.
2.4.3.1 STARTING A BASE/PORTABLE UNIT AS A PORTABLE UNIT
• Switch the unit on by pressing and holding the [M] and [–] buttons simultaneously for approximately 2 seconds.
In a headset, connected in the headset connector on the unit, a voice confirmation “POWER ON” is given,
confirming that the unit is started as a portable unit.
After approximately 15 seconds, the unit is ready and a voice message “BASE #, GROUP 1” is given. The LED
on the unit is lit, showing that the unit is ready for use as a portable unit, and is logged on to base No. #.
(The LED can be switched off with use of special DECT-Com II software.)
Notice: All units are always started in listen only mode in group 1.
Last used alternative (base or portable) is remembered between sessions.
2.4.3.2 STARTING THE UNIT AS A BASE UNIT
• Switch the unit on by pressing and holding the [M] and [+] buttons simultaneously for approximately 2 seconds.
In a headset, connected in the headset connector on the unit, a voice confirmation “BASE, POWER ON” is given,
confirming that the unit is started as a base unit.
After approximately 20 seconds, the system is ready and a voice message “GROUP 1” is given. The LED on the
unit is flashing slower, showing that the base unit is ready for use and portable units can be logged on.
(The LED can be switched off with use of special DECT-Com II software.)
A user with a headset connected in the headset connector on a base unit can also be participating in a
DECT-Com II conference, similar to a portable unit. (See also parts 3, 4 and 6.)
Notice: All units are always started in listen only mode in group 1.
Last used alternative (base or portable) is remembered between sessions.
2.4.4 MAKING A BASE UNIT READY FOR PORTABLES TO BE REGISTERED
Each portable unit should be registered to a base unit to be part of a DECT-Com II conference.
• With the base unit in LISTEN-ONLY and VOLUME mode, double press on the [M] button to enter REGISTRATION mode.
A base unit in REGISTRATION mode is indicated by slow flashing LED.
• When all portable units are registered to the base unit, exit REGISTRATION mode by briefly pressing [MODE] button.

Notice: All main units are delivered open for registration from factory and a DECT-Com II system can be started directly “out of the box”
by first starting a base/portable unit as a base as described above and after that, all portable units, sequentially and continually,
as described above.
After the first turn off of the base unit, the configuration of the system is fixed and all future change of any units has to be handled by
your Authorized Peltor DECT-Com II Dealer*).
If your system is delivered pre-registered in a certain configuration by your Authorized Peltor DECT-Com II Dealer*, all future
registration also has to be handled by your Authorized Peltor DECT-Com II Dealer*).
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2.5 PORTABLE UNIT
2.5.1 SWITCHING A PORTABLE UNIT ON
• Switch the portable unit on by pressing the [M] button.
In a headset, connected in the headset connector on the unit, a voice confirmation “POWER ON” is given and the LED on the
unit is flashing green, showing that the unit is logging on to the base.
When the unit is ready for use, a voice message “BASE #1, GROUP #1” is given and the LED is steady green.
Notice: All portable units normally start in listen only mode in group 1.
At first start up a voice message “SEARCHING” is given. When a base is found a voice message BASE (number), GROUP 1”
is given. When restarting a portable unit, which is programmed to be able to work with more than one base, it will try to log
on to the last us ed base.
2.5.2 SWITCHING A PORTABLE UNIT OFF
• Switch the portable unit off by pressing and holding the [M] button for approximately 2 seconds.
A voice confirmation “POWER OFF” is given and the LED is turned off.
If the unit is still searching for a base when switching off, a voice confirmation “WARNING, POWER OFF” is given.
2.5.3 REGISTERING A PORTABLE UNIT ON A BASE
Each portable unit is registered to at least one base unit to be part of a DECT-Com II conference.
The unit is searching for bases. A voice message “SEARCHING” is given.
• With the portable unit in LISTEN-ONLY and VOLUME mode, double press [M] button to enter BASE SELECT mode.
A portable unit in BASE SELECT mode is indicated by flashing LED.
• When a base is selected, exit BASE SELECT mode by briefly pressing [MODE] button.
A voice confirmation BASE (number), GROUP 1” is given.
Notice: All main units are delivered open for registration from factory and a DECT-Com II system can be started directly “out of the box” by first
starting a base/portable unit as a base as described above and after that, all portable units, sequentially and continually, as described above.
After the first turn off of the base unit, the configuration of the system is fixed and all future change of any units has to be handled
by your Authorized Peltor DECT-Com II Dealer*).
If your system is delivered pre-registered in a certain configuration by your Authorized Peltor DECT-Com II Dealer*),
all future registration also has to be handled by your Authorized Peltor DECT-Com II Dealer*).
2.5.4 LOGGING ON A PORTABLE UNIT TO A BASE
There are two versions of log on:
1. At first power on, the base unit will allow any portable unit to log on. (See 2.1.4)
2. At next start up you will automatically be logged on to the base.
When the log on sequence is finished, the LED on the unit is fixed green and a voice message “BASE (number), GROUP 1”
is given, confirming that the portable unit is logged on as a listen-only to the base and group with the given numbers.
n If no confirming message is given; check that the base unit is switched on and in range!
n If the message “WARNING, SUBSCRIPTION EMPTY” is given; there is no base unit registered to log on to.
n If the messages “SIGNAL LOW, OUT OF RANGE” followed by another “OUT OF RANGE” is given; the portable unit has no
connection with the base unit.

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After approximately 20 seconds a message “SEARCHING” is given, indicating that the unit is searching for a base unit.
You may be too far away from the base, or the base unit is switched off!
When in contact with a base unit again; a message “BASE (number), GROUP 1” is given, confirming that the unit is
logged on to a base with the actual number.
2.5.5 LOGGING ON A NEW PORTABLE UNIT TO A BASE
If another portable unit shall be logged on to the base, the actual base unit must be set in REGISTRATION mode (see 2.1.4).
The portable unit must be in SEARCH mode (see 2.2.7).
Notice: All main units are delivered open for registration from factory and a DECT-Com II system can be started directly “out of the
box” by first starting a base/portable unit as a base as described above and after that, all portable units, sequentially and continually,
as described above.
After the first turn off of the base unit, the configuration of the system is fixed and all future change of any units has to be handled
by your Authorized Peltor DECT-Com II Dealer*.)
If your system is delivered pre-registered in a certain configuration by your Authorized Peltor DECT-Com II Dealer*,
all future registration also has to be handled by your Authorized Peltor DECT-Com II Dealer*).
2.5.6 SEARCHING A BASE FROM A PORTABLE UNIT
• In BASE SELECTION mode on a portable unit; double press on the [M] button to enter BASE SEARCH mode.
A voice confirmation “SEARCHING” is given repeatedly, confirming that the unit is searching for active bases in range.
When a base is found a voice confirmation “BASE (number), GROUP 1” is given.
To find more bases, repeat this procedure again.
2.5.7 SELECTING ANOTHER BASE FROM A PORTABLE UNIT
• In VOLUME mode on a portable unit in LISTEN mode; double press on the [M] button to enter BASE SELECTION MODE.
A voice confirmation “BASE” is given, urging to select a base.
• Press [+] or [–] to cycle through the numbers of available bases and an auto setting
A voice confirmation is given for each available choice: “AUTO”, “ONE”, “TWO” ….
Stop at your preferred base number (or auto, see below).
• Log on to the base by pressing the [M] button and return to listen only menu items by pressing briefly on the mode button.
A voice confirmation “LOGIN” followed by “BASE (number), GROUP 1” is given, confirming that the portable unit is logged
on to the base with the given number as a listener in the given group.
If the system is “open” and “AUTO” is chosen, the unit will log on to the base with the highest signal strength.
Notice: If there is more than one DECT-Com II system within range of each other, the portable units could be pre-designated
to certain bases respectively. Then, if the choice “AUTO”, the unit will log on to the first found of the pre-designated bases.
(For programming DECT-Com II units, special PC software is needed. Contact your Authorized DECT-Com II Dealer*)!)
3 LOGGING IN TO OR OUT OF A CONFERENCE
Up to 9 active speakers and additionally more than 40 listeners can be members in a DECT-Com II conference, on the
same base at the same time. They can be subdivided in up to 3 conferences with fewer members in each group.
3.1 LOGGING IN AS A LISTEN-ONLY CONFERENCE MEMBER
A portable unit is initially logged in to a conference as a LISTEN-ONLY member, taking part in the DECT-Com II conference as a listener
only. A voice confirmation “BASE (number), GROUP (number)” with the actual conference number and group is given.
At any time it is possible for a LISTEN-ONLY member to enter as an ACTIVE member in a conference group by pressing a [PTT#] button.
If the conference already consists of the maximum number of members, the first logged in ACTIVE member is pushed out to be a
LISTEN-ONLY member.
3.2 LOGGING IN AS AN ACTIVE CONFERENCE MEMBER
• Press twice on [PTT #] to break in to one of the max. three conferences.
A double tone is confirming that you are an active member in the selected conference.
• Press once on the same [PTT #] again to change to listen-only mode.
A single tone is confirming that you are a listen-only member in the conference.

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3.3 LOGGING IN AS AN ACTIVE CONFERENCE MEMBER IN ANOTHER CONFERENCE GROUP
• Press on another [PTT #] button to become a member in another conference.
A tone is confirming that you are a member in the selected conference.
3.4 AUTOTALK
A system for maximum 9 users can be programmed in a configuration where all the portables always should be in TALK MODE.
Automatic talk mode makes it possible to ensure that all the members in the small group are speakers in the conference as soon
as they are in range of the base unit.
(For further information; contact your Authorized Peltor DECT-Com II Dealer*).)
4 CONTROLS
4.1 MODE
The mode button [M] controls functions of the unit.
• Step forward through the MENU mode steps by pressing briefly on the [M] button.
Voice messages “VOX”, “MICROPHONE”, “VOLUME” are given respectively to confirm the actual mode.
• Step backwards through MENU mode steps by double press on the mode button.
Voice messages “MICROPHONE”, “VOX”, “VOLUME” are given respectively to confirm the actual mode.
• Use the [+] and [–] buttons to adjust the settings respectively.
Current settings are stored when the unit is switched off.
Notice: A double-press in VOLUME mode and LISTEN ONLY mode on a base unit will put the unit in REGISTRATION mode (see 2.1.4).
Double press in VOLUME mode and LISTEN ONLY mode on a portable unit will put the unit in BASE SELECTION mode (see 2.2.6).
4.1.1 VOLUME (sound pressure)
In VOLUME mode the level of the incoming audio can be set in 5 steps.
• Use the [+] or [–] button to set the sound level from the DECT-Com unit.
A voice message confirms the new setting each time you press a button.
4.1.1.1 VOLUME BOOST (higher sound pressure)
The volume levels on all active volume steps can be increased by +6 dB. For instance, this function can be
used to compensate for additional attenuation from simultaneous use of ear-plugs and headset.
• Press the [+] button for 10 seconds to activate VOLUME BOOST function.
A voice confirmation “EXTRA HIGH VOLUME” is given when you have activated the function.
n WARNING: High sound pressure may occur in the headset!
• Press the [–] button for 10 seconds to deactivate VOLUME BOOST.
A voice confirmation “NORMAL VOLUME” is given when you have deactivated the function.
4.1.2 VOX (Voice operated transmission)
In simplex radio communication, VOX normally means that reception of the incoming sound from the receiver is completely
stopped when sound of a certain level reaches the microphone and switches the radio to transmission mode.
With the full duplex DECT-Com II units, VOX means “a voice operated noise gate”, which can prevent from transmitting
background noise up to a certain sound level from units where the user do not speak, but can constantly, all the time,
listen to the incoming sound from the conference.
• In VOX mode, use the [+] and [–] buttons to set the VOX sensitivity.
There are 7 VOX settings; “OPEN – 1 – 2 – 3 – 4 – 5 – OFF”, where OPEN means constantly transmitting
(continuous full duplex) and OFF means that you have to use a [PTT#] button to transmit (see 4.2).
A voice message indicates your selected choice.
Last used setting is remembered between sessions.

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IMPORTANT: If you are using a Peltor headset which has a microphone with ambient-noise compensation,
always position the microphone very close to your lips (max. 3 millimetres) for optimal VOX function!
4.1.3 MICROPHONE
One of four microphone types (carbon, electret, dynamic or low impedance) can be chosen by the user,
to adapt the amplification in the DECT-Com unit to the electrical signal level of the actually used microphone.
• In MICROPHONE mode, use the [+] and [–] buttons to set the used microphone type.
A voice message indicates your selected choice.
Last used setting is remembered between sessions.
4.2 PTT (Push-To-Talk)
There are three Push-To-Talk buttons [PTT #] on a DECT-Com II main unit.
PTT1 is always connected to conference group 1 while PTT2 and PTT3 are intended for groups 2 and 3 and/or
for possibly attached external equipment (See EXTERNAL EQUIPMENT below).
• Press on a [PTT #] button to enter as a member in a DECT-Com conference (see part 3).
The PTT function is also always available in VOX mode.
Notice: If PTT2 and/or PTT3 are assigned for control of external communication equipment, separate user’s instructions may
apply for any special application. Contact your Authorized Peltor DECT-Com Dealer*) for more information. (See part 9.2)
4.3 ALL-CALL (Emergency call etc.)
It is possible to communicate, in simplex mode, with DECT-Com II units in all groups on the base unit. It is also possible to
reach other DECT-Com II conferences if their base units are synchronised and in range of each other.
The synchronisation should be done by starting the systems in range of each others. If this function should always be accessible,
the bases have to constantly be in range (for instance as fixed mounted bases). If the bases have been out of range of each
others, it may take up to 20 minutes to get them synchronised again!
• Press and hold UP [+] and DOWN [–] buttons simultaneously to transmit a short message.
A double tone is confirming that the ALL-CALL is activated. The transmission period is limited, normally to max. 30 seconds.
4.4 LOCKED BUTTONS
To avoid unwanted changes in the settings of functions, it is possible to lock all buttons, so that only the ON/OFF function is active.
This can preferably be combined with the automatic talk mode function. (See also AUTOTALK above.)
Notice: Many of the functions and settings in DECT-Com II can be adjusted according to the user’s demands.
For further information; contact your Authorized Peltor DECT-Com II Dealer*).
5 OUT OF RANGE
Peltor DECT-Com II is a short range communication system. (See TECHNICAL DATA OF MAIN UNIT below.)
If the portable unit is close to the actual maximum working range from the base unit, a voice message “SIGNAL LOW“is given
in the connected headset.
When the portable unit is out of range from the base unit, a voice message “SIGNAL LOW, OUT OF RANGE is given in the connected headset.
After another 20 seconds, the may try to find another base and a voice message “SEARCHING” is given.
When the portable unit is in range again, or another base is found, a voice message “BASE (number)” is given in the connected headset.
If automatic talk mode function is activated, a portable unit, after being out of range, always return to TALK MODE as soon as it is in
range again. (See AUTO TALK above.)

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6 POWER SUPPLY
A main unit can generally be powered from a rechargeable battery pack DC2033.
The external battery carrier DC2032, for 6 or 3 type AA batteries, can also be used to increase the usage time of the unit.
Also, a main unit can be continuously power supplied in a power supply holder DC2068.
6.1 INTERNAL BATTERIES
6.1.1 BATTERY PACK
The main units require a special Peltor battery pack DC2033.
6.1.2 CHANGING THE INTERNAL BATTERY PACK
• Switch the unit off by pressing and holding the [M] button for approximately 2 seconds.
A voice confirmation “POWER OFF” is given and the LED is turned off.
Turn the clip aside and loosen the screw with a suitable tool (see figure 1). (n Warning: Do not use your nail! It may break.)
Open the battery lid and replace the battery (see fig. 2).
Push the battery pack down firmly to get the connecting plates in contact with the pins (see fig. 3).
Hook the battery lid on to the bottom of the unit, close it, press down and tighten the screw again with the tool (see fig. 4).
(n Warning: Do not use your nail! It may break.)
n The message “BATTERY LOW” indicates that the energy in the battery is low and you should change
or charge battery as soon as possible.
n The message “BATTERY EMPTY” indicates that the energy in the battery is very close to empty and
the unit will automatically switch off!
6.1.3 CHARGING AN INTERNAL BATTERY PACK
A rechargeable NiMH-battery DC2033 has to be charged in a main unit with an appropriate Peltor charger/holder.
CHARGING A BATTERY PACK IN A MAIN UNIT
When placed inside a main unit, a rechargeable NiMH-battery pack DC2033 can be charged with the main unit in a Peltor
charger/holder DC2064. For fixed use of main units in high or low temperatures (below 5°C or above 45°C), where NiMH
batteries can not be charged, the Power Supply/holder DC2068 may be used. (See part 6.4)
The combined DC2064 charger and holder unit for the DECT-Com main unit, which is sealed according to IP42,
may be used in dry areas.
6.2 EXTERNAL BATTERIES
The external battery carrier DC2032 can be mounted on the back of the main unit. It offers extra energy for longer usage time.
Any standard batteries (6 x 1.5 Volts, type AA) or rechargeable batteries (6 x 1.2 Volts, type AA) can be used.
6.2.1 MOUNTING OF EXTERNAL BATTERY CARRIER
Place 3 or 6 batteries inside the battery carrier DC2032 according to the figures below.
Remove the attachment clip DC2071, if it is mounted on the main unit (see fig. 5).
Mount the battery carrier on the main unit (see fig. 6).
Tighten the screw with a suitable tool (see fig. 7). (n WARNING: Do not use your nail! It may break.)
A voice message “EXTERNAL BATTERY“ indicates that the external battery is in use.
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