CeoTronics CT-DECT Base User manual

CT-DECT Multi
Transmitter/Receiver Unit for Wireless Duplex Communication
Operating Instructions

2
1a 6-pole jack for a CT communication set.
b On/off switch and volume control (rotary knob).
The unit is switched off if the rotary knob is set
fully counter-clockwise (position » z«).
The volume control is used to adjust the
volume for the CT communication set.
c Bank of 5 push-buttons
The both push-buttons at the begin and end of
the push-button bank are for subscription only
(press both push-buttons simultaneously). One
of the three push-buttons in the middle has to
be pressed for connection setup and release.
d Removable cover for the battery compartment.
e Fastening clip on the rear.
f 26-pole multi-purpose jack for connection of
CeoTronics accessories, e.g. for a second CT
communication set, for battery charging, for
programming the unit by the factory.
If a communication set is connected to the 6-
pole jack (a), the second CT communication
set connected to the multi-purpose jack (f) is
automatically switched off.
23

3
45
67

4
Important Note
Please note that any changes or modifications not expressly approved by the party
responsible for compliance will void the user’s authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that cause undesired operation.
SAFETY INFORMATION
Your wireless headset transceiver contains a low power transmitter. When transmitting it
sends out radio frequency (RF) signals. In August 1996, the Federal Communications
Commission (FCC) adopted RF exposure guidelines with safety levels for wireless devices.
WARNING
This headset is considered to be a portable device.
Because of the construction of this device the internal transmitter and it's antenna is located
in such a way, that a separation distance from the user's body is maintained in compliance
with the FCC's RF Exposure Guidelines.
This device and it's antenna must not be co-located or operating in conjunction with any other
antenna or transmitter.
Use only the internal antenna. Unauthorized antennas, modifications, or attachments could
damage the transmitter and may violate FCC regulations.
1. Important safety instructions
When using CeoTronics products do not fail to comply with the following safety
information:
zBefore using CeoTronics products read completely the appropriate operating instructions. If in doubt,
ask our technical staff.
zIf repair work of any kind needs to be done to CeoTronics products, arrange for it to be performed
only by the company CeoTronics or by a specialized workshop that is authorized by CeoTronics. In
all other cases our warranty and liability for the product shall lapse.
zIf products are operated on a mains voltage, always pull the mains plug out of the mains plug socket
before opening such products (e.g. for servicing purposes) !
zDo not store CeoTronics products outside or in damp ambient conditions. At all times keep them
clean, dry and at normal air humidity. CeoTronics products must not be stored in areas with a
temperature of over +80° C (+176° F), e.g. in the summertime on the parcel shelf of a car. If not
stated otherwise, the following temperature ranges are allowed for CeoTronics products: -10 to
+55° C (+14 to +131° F) for operation, -40 to +80° C (-40 to +176° F) for storage.
zDo not immerse a CeoTronics product into water, if it is not expressly specified for this purpose.
zWhen using CeoTronics products that are equipped with connection leads ensure that the latter do
not get caught up in operational machinery or wheels !
zCeoTronics products that are not intrinsically safe (explosion-proof) and therefore have no special
explosion-proof designation must never be operated in potentially explosive environments (e.g.
when refuelling cars, aircraft etc.). Devices that are not explosion-proof can unintentionally trigger off
explosions in such areas !
zConnect CeoTronics accessories to a device or disconnect them from a device only when the device
is switched off.

5
zIf you are a cardiac pacemaker carrier, before operating a transmitter/receiver ask the manufacturer
of your cardiac pacemaker for information about any impairment that might be caused due to high
frequencies.
zFor safety reasons reception volumes in excess of 85 dB(A) are possible with a whole series of
CeoTronics products. However, these can be regulated by the user. Do not set the volume any
higher than is necessary. A very high volume setting can lead to damaged hearing, particularly if it is
continuous. For high volumes or noise levels wear additional ear plugs. If in doubt, ask your safety
officer or company doctor.
zWhen on board an airplane always keep a transmitter/receiver switched off. Operation of the
transmitter/receiver could affect the safety of the airplane and it is therefore prohibited. Never
operate electronic devices on board an airplane without the express approval of an authorized
member of the cabin crew.
zDo not leave CeoTronics products lying around loose in cars, e.g. on the parcel shelf. Stow these
products in a suitable, safe place in the car so that they do not present a danger to you or to other
occupants of the car, if emergency braking is effected.
zWhen driving a car, do not use the radio because it may distract you from the other traffic. Never use
a CeoTronics product (headset, insert earphone, induction receiver etc.) that will impair your hearing.
zCharge rechargeable batteries only with the appropriate suitable CeoTronics charger. Observe the
voltage and currency specifications, including those on the mains face (e.g. 230 V AC or 115 V AC).
Never use the charger to recharge non-rechargeable batteries.
zWhen handling rechargeable batteries comply with environmental protection regulations !
Rechargeable batteries contain toxic chemicals (e.g. cadmium). Never attempt to open a
rechargeable battery and never throw a rechargeable battery into fire. Expended (defective)
rechargeable batteries are subject to compulsory regulated waste disposal. Do not put them in the
household waste !
zEnsure that a short-circuit (risk of fire or injury) is not created across rechargeable battery terminals
or charging sockets by a short-out (bent-open paper clip, bunch of keys etc.). In such an event the
warranty shall lapse. Transport any spare rechargeable batteries in an electrically non-conducting
package in order to avoid short-circuiting the rechargeable batteries.
zKeep CeoTronics products and rechargeable batteries out of the reach of children and any other
persons who are not familiar with the handling and operation thereof.
zPackaging materials, e.g. filling materials and plastic bags are not toys and have to be kept out of
the reach of children. There is a risk of children ingesting them and choking !
zSafe operation requires clean devices. Ensure that the devices (microphones, connectors etc.) are
clean and in good condition at all times.
zCeoTronics products may only be used for the specific application envisaged.
zIf the device is to be put out of operation definitively, bring it to a local recycling plant for disposal or
send it to CeoTronics.
2. Description
2.1 General
The CT-DECT Multi is together with a CeoTronics communication headset or hand microphone or other
communication devices a transmitter/receiver unit for wireless duplex communication between a max.
of three communication parties over short distances. The range depends on the local circumstances.
Up to two standard units are allocated to a base unit. Channel selection is effected automatically.
Protection against eavesdropping and interference is ensured.
The unit is fitted with a connector for various CeoTronics communication sets which are available as an
accessory. Frequently used communication sets are described in sections 2.4...2.9. The CT-DECT
Multi can be used as a hand-held unit or is worn on belt by means of the fastening clip on the rear.

6
The minimum version of the system comprises one base unit and one standard unit. A second standard
unit can also be operated in conjunction with the base unit. The base and standard units are marked by
an imprint, as follows:
– CT-DECT Base
– CT-DECT Standard
ÎNOTE
The base unit and the standard unit(s) can also be used in conjunction with other CeoTronics
DECT units and DECT systems. Notice the special CeoTronics operating instructions for these
units and systems.
2.2 Power supply and operating time
Power is supplied by a 3.6 V/2300 mAh Li-Ion rechargeable battery in the battery compartment of the
unit. With a fully charged battery the operating time for continuous operation is approx. 20 hours.
2.3 Audio signals used
Two different audible tones are used for signalling the operating status via the communication set
connected to the unit. The tone for the indication of positive responses (P-tone) has a higher frequency
than the tone for the indication of negative responses (N-tone). Signalling of the various events is
effected by a varying number of consecutive P-tones or N-tones.
Positive acknowledgement tone
All positive responses are indicated by a high P-tone.
Negative acknowledgement tone and error tone
All negative responses and error status are indicated by a low N-tone.
Battery warning
If the battery has an undervoltage a low 3-beep N-tone sequence »N-N-N« sounds approximately every
10 seconds.
Range warning
If the range limit is reached, a high 3-beep P-tone sequence »P-P-P« sounds approx. every 5 seconds.
2.4 Unit with hand microphone SM 3
The hand microphone SM 3 (for example see Fig. 2) consists of a PTT button (Fig. 2/a), loudspeaker
(b), microphone (c), and connection cable with plug (e) for connection to the transmitter/receiver unit.
An earphone can be connected to the 3.5 mm (d) jack. The hand microphone can be fastened to a
suitable place on the clothing by means of the fastening clip on the rear. The best distance for speaking
into the microphone is approx. 10 cm (approx. 4 in.).
2.5. Unit with HeavyDuty Headset with level limited ambient sound reception
The HeavyDuty Headset with level limited ambient sound reception (for example see Fig. 3) protects
against harmful ambient noise. It might be equipped as follows: adjustable headband (Fig. 3/a), one
speaker for radio reception in the right-hand and in the left-hand ear muff (b) respectively, noise
cancelling microphone with windshield (e) and flexible goose neck (d), without or with PTT button (f),
connecting cable and plug (g) for connection to the unit.
HeavyDuty Headsets with level limited ambient sound reception are used mainly where ambient
sounds, warning signals etc. have to be heard alongside duplex communication. The external sounds
are received by the microphone (c) on the front side of the left-hand headset muff and are audible
inside this headset muff via the ambient sound speaker. If the external sounds exceed 85 dB(A), the
sound level emitted to the ear by the ambient sound speaker is limited electronically to a maximum of
85 dB(A).

7
2.6 Unit with Lightweight Headset
The Lightweight Headset (for example see Fig. 4) is a particularly lightweight, foldable headset with one
or optionally two speakers. It might be equipped as follows: adjustable headband (Fig. 4/a), noise
cancelling microphone with windshield (f) and flexible goose neck (e), speaker on one side (b),
connecting cable without or with PTT button (g) and plug (h) for connection to the unit.
The microphone mounting (d) and the speaker mounting (c) are rotatable on the headband. The goose
neck (e) is slidable and turnable in the microphone mounting.
2.7 Unit with ContactCom Communication Set
ContactCom is a communication set, e.g. for use with helmets, headbands, respirator masks. Fig. 5
shows a ContactCom communication set with an universal-type helmet adapter that is preferably
installed into helmets, the helmet insert of which is fitted with an all round headband. Installation can be
effected on the right or left inside the helmet.
It consists of the following: universal aluminium fastening with spring steel strip (Fig. 5/a) and metal
clip (e), contact microphone (b), speaker (f), connecting cable with plug (g) for connection to the unit.
The contact microphone and speaker are normally attached by the factory to the universal fastening
and connected to each other via a cable (d). The universal fastening is fastened to the headband
inside the helmet by means of the metal clip (e). Other ContactCom communication sets with special
fastening components are available
2.8 Unit with BoomMike Speaker Unit
The BoomMike Speaker Unit with universal metal clip (for example see Fig. 6) is preferably built into
helmets in which the helmet insert is equipped with an all-round headband. The BoomMike Speaker
Unit can be equipped as follows: metal clip (Fig. 6/d) for fastening the microphone/speaker unit to the
headband inside the helmet, noise cancelling microphone with windshield (a) and flexible goose neck
(b), speaker (c) in a plastic housing, connecting cable with plug (e) for connection to the unit.
2.9 Unit with Throatmike Comfort
The Throatmike Comfort (for example see Fig. 7) is preferably used for communication in conjunction
with protective suits, helmets and masks. It can be equipped as follows: throat microphone (Fig. 7/c)
with an elastic stretch necklet (b) and connecting cable to the matching unit (g), earphone (f) and
flexible earhanger (e), connecting cable to the matching unit (g), matching unit and connecting cable
with plug (h) for connection to the unit.
2.10 Communication sets with PTT button
In the case of communication sets with PTT button (see examples Fig. 2, 3, 4) for speaking the PTT
button (PTT = push-to-talk) has to be pressed down. By pressing the PTT button the microphone of the
communication set is switched on. You can speak into the microphone as long as you keep the PTT
button pressed and at the same time you can receive a message. Upon release of the PTT button the
microphone is switched off and you can receive only.

8
3. On-air subscription
3.1 General
ÎNOTE
The on-air subscription is a procedure which has to be performed once only by the factory. It
must be performed only in the case of an error or if another CT-DECT Multi will be used in the
system. If this is not the case skip the sections 3....3.2.2 and start with section 4.
Each unit is equipped with a DECT module and has its own identification number. First of all an
allocation must always take place between the base unit and the maximum of two standard units. This
subscription procedure, which has to be perfomed once only, is performed on the base unit and the
maximum of two standard units manually by means of a procedure carried out by the operator.
If a third standard unit is subscribed to the base unit, the standard unit that was subscribed in first is
deleted from the data base of the base unit.
Once the subscription procedure has been successfully concluded, the identity of the communication
partner is stored in the data base of the unit. The standard unit stores one base unit. The base unit
stores the last two successfully subscribed standard units.
Time Out
If a base unit or a standard unit is set to subscription mode and this is terminated or not completed after
2 minutes without the subscription procedure having been successfully concluded a »Time Out«
occurs. The »Time Out« effects that the data bases of a max. of two stored standard units available in
the base unit and in the case of the standard unit the available data base for the stored base unit are
deleted. After a »Time Out« the subscription procedure must be restarted.
3.2 On-air subscription
ÎNOTES
zTwo standard units can never be simultaneously subscribed to the base unit, they must
always be subscribed one after the other. If two standard units are used in conjunction with
the base unit always both standard units must to be subscribed one after the other to the
base unit, never one standard unit only.
zAfter subscription the units have to be switched off again.
3.2.1 On-air subscription of the first standard unit
a. Connect he communication set to the jack (Fig. 1/a) on the upper side of the unit.
b. On the base unit simultaneously press the both subscription buttons located at the begin and end of
the the push-button bank (Fig. 1/c). Keep the two subscription buttons pressed and switch on the
base unit by means of the on/off switch and volume control (rotary knob Fig. 1/b). The on-air
subscription procedure will be signalled by a 5-beep tone sequence via the communication set. Then
immediately carry out step »c«, otherwise a »Time Out« may occur (see section 3.1).
c. On the standard unit simultaneously press the both subscription buttons located at the begin and
end of the the push-button bank (Fig. 1/c). Keep the two subscription buttons pressed and switch on
the standard unit by means of the on/off switch and volume control (rotary knob Fig. 1/b).
After approx. 30 seconds a high double-beep tone can be heard in the communication set of the
base unit and in the communication set of the standard unit. This indicates that the on-air
subscription has been successfully completed. A second high double-beep tone finally reports that
the standard unit has synchronized itself with the base unit. Afterwards switch off both units.
3.2.2 On-air subscription of the second standard unit
Ensure that the standard unit that was subscribed in first (section 3.2.1) is switched off. Repeat the
subscription procedure for the base unit and for the second standard unit as described in section 3.2.1.
Afterwards switch off all units.

9
4. Commissioning and operation
4.1 Connecting the headset or hand microphone
a. Connect he communication set to the jack (Fig. 1/a) on the upper side of the unit.
b. If a communication headset is used – Put on the headset and adjust it so that it fits comfortably and
correctly.
If the hand microphone SM 3 is used – Fasten the hand microphone, if desired, with the clip on the
rear to a suitable place on your clothing.
c. Place the unit on a suitable place of your clothing.
ÎNOTE
Protect the unit against dampness.
4.2 Switching on, synchronization, adjusting the speaker volume
a. Switch on the units by means of the on/off switch and volume control (rotary knob Fig. 1/b).
Synchronization: A high beep tone is audible in the communication set connected to the base unit
and to the standard unit approx. 10 seconds after switching on. The synchronization procedure then
begins, i.e. the base unit seeks its standard unit. This synchronization procedure can last approx. 30
seconds.
Upon completion of synchronization – i.e. the base unit has found its standard unit – a high double-
beep tone sounds in the communication set of the standard unit and of the base unit. Subsequently
the connection setup between the units is effected automatically and the units are ready for duplex
communication. In the case of two standard units two high double-beep tones are audible in the
communication set of the base unit upon successful completion of synchronization.
b. On voice reception adjust the speaker volume for your communication set by means of the on/off
switch and volume control knob (rotary knob).
ÎNOTE
Always leave the units switched on as long as you work with the communcation system so that
immediate availability of the system is provided.
c. Connection setup and release see sections 4.3...4.3.3.
4.3 Connection setup and release and duplex communication
4.3.1 Automatic connection setup after switching on
After the base unit and the standard unit(s) are switched on the first connection setup between the units
is effected automatically (see section 4.2). Subsequently duplex communication (speech and
simultaneous listening) is possible via the communication sets connected to the units.
In the case of communication sets with PTT button, press the PTT button and keep it pressed while
speaking (see section 2.10).
4.3.2 Connection setup and release by the base unit
(1) Prerequisites
yUnits subscribed (see sections 3...3.2.2)
yUnits switched on and synchronized (see section 4.2)
(2) Two-party conference
Connection setup
Press one of the three the push-buttons in the middle of the push-button bank on the base unit. When
the connection is set up a high beep tone sounds in the communication set of the calling base unit and
of the called standard unit. Subsequently duplex communication (speech and simultaneous listening) is
possible for both parties. In the case of communication sets with PTT button, press the PTT button and
keep it pressed while speaking (see section 2.10).

10
Connection release
Press one of the three push-buttons in the middle of the push-button bank on the base unit. The base
unit is disconnected from the standard unit. A high beep tone then sounds in the communication set of
the base unit and of the standard unit.
(3) Three-party conference
Below the designations standard unit 1 and standard unit 2 are used only for the purpose of better
differentiation in the operating instructions. Both standard units operate with equal entitlement.
Connection setup
Press one of the three push-buttons in the middle of the push-button bank on the base unit. The base
unit sets up automatically a connection with the active standard units 1 and 2. Upon setup of the
connection a high beep tone sounds in the communication set of the calling base unit and of the called
standard units 1 and 2, and the base unit switches over automatically to three-party conference mode.
Subsequently duplex communication (speech and simultaneous listening) is possible for the three
parties. In the case of communication sets with PTT button, press the PTT button and keep it pressed
while speaking (see section 2.10).
Connection release
Press one of the three push-buttons in the middle of the push-button bank on the base unit. The base
unit disconnects itself from the standard units 1 and 2. A high beep tone then sounds in the
communication sets of the three units.
4.3.3 Connection setup and release by the standard unit
(1) Prerequisites
yUnits subscribed (see sections 3...3.2.2)
yUnits switched on and synchronized (section 4.2)
(2) Two-party conference
Connection setup
Press one of the three push-buttons in the middle of the push-button bank on the standard unit. When
the connection is set up a high beep tone sounds in the communication set of the calling standard unit
and of the called base unit. Subsequently duplex communication (speech and simultaneous listening) is
possible for both parties. In the case of communication sets with PTT button, press the PTT button and
keep it pressed while speaking (see section 2.10).
Connection release
Press one of the three push-buttons in the middle of the push-button bank on the standard unit. The
standard unit is disconnected from the base unit. A high beep tone then sounds in the communication
set of the standard unit and of the base unit.
(3) Three-party conference
Below the designations standard unit 1 and standard unit 2 are used only for the purpose of better
differentiation in the operating instructions. Both the standard units operate with equal entitlement.
Connection setup
Press one of the three push-buttons in the middle of the push-button bank on the standard unit 1.
Standard unit 1 sets up a connection with the active base unit. Upon setup of the connection a high
beep tone sounds in the communication set of the standard unit 1 and of the called base unit.
The base unit does not automatically set up a connection with standard unit 2. Not until one of the three
push-buttons in the middle of the push-button bank on the standard unit 2 has been pressed, does
standard unit 2 set up a connection with the base unit. If a connection exists between standard unit 1
and the base unit, the base unit then switches over automatically to three-party conference mode.

11
If a connection already exists between standard unit 2 and the base unit when standard unit 1 sets up a
connection with the base unit, the connection between standard unit 2 and the base unit is retained and
the base unit switches over automatically to three-party conference mode.
Subsequently duplex communication (speech and simultaneous listening) is possible for the three
parties. In the case of communication sets with PTT button, press the PTT button and keep it pressed
while speaking (see section 2.10).
Connection release
Press one of the three push-buttons in the middle of the push-button bank on the standard unit 1. The
standard unit 1 disconnects itself from the base unit. A high beep tone then sounds in the
communication set of the standard unit 1 and of the base unit. If a connection still exists at this time
between the base unit and standard unit 2, the connection between the base unit and standard unit 2 is
retained. Not until one of the three push-buttons in the middle of the push-button bank on the standard
unit 2 has been pressed does standard unit 2 disconnect itself from the base unit.
4.4 Range warning
If the range limit is reached a high 3-beep P-tone sequence »P-P-P« is audible in the communication
set approx. every 5 seconds. In the case the range limit is crossed the connection will be released. Not
until the base unit and the standard unit(s) have synchronized within the range limit (see section 4.2,
item »a«) the connection can be set up again.
4.5 Battery warning
If the battery has an undervoltage a low 3-beep N-tone sequence »N-N-N« is audible in the
communication set approximately every 10 seconds.
4.6 End of operation
Switch off the unit with the on/off switch and volume control knob (position » z«). This guarantees a
longer usage from the rechargeable battery. If necessary recharge the battery.
5. Safekeeping – storage
After use, keep the cleaned unit in a clean and dry place at normal room temperature and at normal
relative air humidity.
6. Recharging batteries
The rechargeable Li-Ion battery 3.6 V/2300 mAh in the unit should only be charged with the charger
supplied with the system. Otherwise the battery may be damaged. The charger is neither water-tight
nor dust-tight. Protect it against water, rain and dirt. The charger may only be used in rooms with
normal relative air humidity and temperature. Do not cover up the charger.
CAUTION
zNever use battery chargers to charge non-rechargeable batteries. Never open rechargeable
batteries or throw them into fire. Used (defective) rechargeable batteries are subject to
special waste disposal. Do not put them in the household refuse !
zNever charge rechargeable NiCd or NiMH batteries with the charger.
zNever charge a rechargeable battery in areas with an explosion risk – an explosion may
result. Charge rechargeable batteries only within a building or similar environment that does
not contain dangerous concentrations of volatile vapors.
Always switch off the unit before you start charging. For charging connect the charger to the multi-
purpose jack located on the bottom of the unit. Notice the special CeoTronics Operating Instructions for
the charger.

12
7. Maintenance
7.1 Visual inspection
Examine the units and in particular the cables and connectors regularly for signs of fractures, cracks
and wear. Send defective devices to CeoTronics for repair.
7.2 Cleaning
WARNING
When cleaning ensure that no moisture penetrates inside the unit. Do not use any solvents
(e.g. benzine, alcohol, etc.) for cleaning purposes !
Remove any loose dust with a soft brush. Clean, if necessary, the outside with a suitable clean cloth
that has been slightly moistened with clear water, and rub the parts dry afterwards. If heavily soiled,
some dishwashing liquid can be used in addition. Clean the contacts of connectors with a commonly
available contact cleaning agent.
8. Accessories
Designation and description Art. No.
Single-unit charger for Li-Ion rechargeable batteries, charging time approx. 5 hours
For a mains voltage of 90...240 V 50/60 Hz
40 06 529

13
Notes

Germany and
International Sales
CeoTronics AG
Adam-Opel-Str. 6
63322 Rödermark (Germany)
Tel. [phone]
Fax [phone]
E-Mail [email protected]
USA/Canada/Mexico
CeoTronics, Inc.
533 Byron Street, Suite E
Chesapeake, VA 23320-6603
Tel. [phone]
Fax [phone]
E-Mail [email protected]
Great Britain and Ireland
CeoTronics Ltd.
1 Highview yHigh Street
BORDON, Hampshire
GU35 0AX
Tel. [phone]
Fax [phone]
E-Mail [e-mail]
France
CeoTronics Sarl
Z.A. des Arpents
16, Rue du Pré aux Aulnes
77340 PONTAULT-COMBAULT
Téléphone 01 60 18 33 00
Télécopie 01 60 28 60 60
E-Mail [email protected]
Spain
CeoTronics S.L.
C/Antonio Vicent 23-1°
28019 Madrid
Tel. [phone]
Fax [phone]
E-Mail
[email protected]
Switzerland
CeoTronics AG
Grundstr. 16
6343 Rotkreuz
Tel. [phone]
Fax [phone]
E-Mail [email protected]
EIGENE/CT-DECT/MULTI-US-ZUL.DOC/01/3002 yDOK 0410 Subject to change
Copyright © 3/2002 CeoTronics AG, 63322 Rödermark, Germany, Internet www.ceotronics.com