Manual Comtel CT 1900 (page 7 of 26) (English, German, Dutch, French, Italian, Polish, Spanish)

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The ﬂ ashing on the charging station does not

effect the reception range.

6. Functional test

It is very important to check the function of

the babyphone prior to initial use. Position the

transmitter in the required room and e. g. turn

a radio on at low volume. Then set the transmit-

ter sensitivity regulator (4) to the required re-

sponsivity. The further you turn the regulator up-

wards, the more sensitive the transmitter. Now

walk through your rooms with the receiver and

set the desired volume.

7. Battery monitoring

Insufﬁ cient transmitter and receiver voltage will

be indicated during rechargeable battery or bat-

tery operation. The transmitter and receiver op-

erational status indicators (2) ﬂ ash red, if the

operating voltage is too low. The receiver ad-

ditionally sounds an acoustic signal, if the re-

chargeable batteries are discharged.

8. Charging the rechargeable batteries

The rechargeable batteries provided for the

transmitter and receiver must be fully charged

before initial use.

Caution! Only exchange defective rechargea-

ble batteries for original rechargeable batteries.

Normal Micro rechargeable batteries AAA can-

not be charged in these babyphones.

Further original rechargeable batter-

ies can be ordered with the enclosed

order card.

We recommend operating both devices with the

provided power packs, especially for night mon-

itoring, to ensure perfect monitoring. It could

otherwise happen that the battery signal is trig-

gered according to the charging state during

normal rechargeable battery operation during

the night and you are woken up.

8.1. Charging the receiver battery

• Charge the receiver batteries by connecting a

power pack to the charging station (1).

• Charging starts automatically as soon as you

have connected the power pack to the charg-

ing station and the receiver is in the charging

station. The charging procedure is indicated

by the green ﬂ ashing LED (2).

• The charging time is approximately 10 hours

with completely discharged rechargeable bat-

teries and switched off device. The charging

time doubles, if the receiver is activated.

• Overloading the rechargeable batteries is

technically impossible.

• The LED (2) extinguishes after charging (when

the device is switched off).

8.2. Charging the transmitter battery

• Charge the transmitter batteries by connect a

power pack to the transmitter socket (3).

• Charging starts automatically as soon as you

have connected the power pack to the trans-

mitter. The charging procedure is indicated by

the green ﬂ ashing LED (2).

• The charging time is approximately 10 hours

with completely discharged rechargeable bat-

teries and switched off device. The charging

time doubles, if the transmitter is activated.

• Overloading the rechargeable batteries is

technically impossible.

• The LED (2) switches to red after charging

(when the device is switched off).

9. Consumer note

Please note that all NiCd and NiMH rechargea-

ble batteries only achieve their full capacity after

4-6 charging cycles.

10. 864 MHz technology

The unit operates in the 864 MHz frequen-

cy range and thereby eliminates the possibil-

ity of disturbances by CB and amateur radio

operators.

11. Digital coding

The radio security and the freedom from inter-

ference of this babyphone are additionally im-

proved by a non-audible and proven digital cod-

ed signal. The coding causes the receiver to

only switch itself on, if noises are transmitted

from your own transmitter e. g. the supervised

baby. CT-1900 has 16 different digital codes

available, which you can individually adjust to

your environment with the DIP switches (see

ﬁ g. 3). Receiver activation by other transmitters

or other baby monitoring systems is therefore

almost impossible.

(+/-), into the provided recesses (see housing

embossment).

Now close the battery compartment lid and

push the clips into the initial position.

5. Initial operation

5.1. Transmitter

1. Position the transmitter vertically in the room

to be supervised to ensure optimal transmis-

sion. The front of the device should if possible

be directed towards the person to be super-

vised (e. g. your baby). Furthermore ensure

that the noises and/or the sounds are not dis-

turbed by obstacles.

2. Proceed as described in “

8. Charging the

rechargeable batteries

” for accumulator op-

eration.

3. Connect one of the two enclosed power

packs to the transmitter socket (3), to operate

the device by mains supply.

4. Connect the power pack to the mains (check

beforehand, whether the performance data

on the rating plate of the power pack corre-

spond to your mains supply data).

5. The device is switched on and one of the

two transmission channels selected with the

transmitter slide switch (5). The device trans-

mits on channel 1 in the position “K1“ and on

channel 2 in the position “K2“. The transmitter

sensitivity can be set according to your needs

with help of the sensitivity regulator (4).

6. A signal transmitted by the transmitter is dis-

played on the illuminated green transmission

indicator (2).

7. The transmitter automatically switches into

the energy saving mode, if no more noises

are recorded. This is indicated by the illumi-

nated red transmission indicator (2).

Note! In order to avoid malfunctions during the

use of the power pack leave the rechargeable

batteries in the device.

The operational status indicator lights up red as

soon as the transmitter is connected to the pro-

vided power pack, if the device is switched off,

provided that there are no rechargeable batter-

ies in the device.

We recommend observing a distance of at least

1 m between transmitter and baby for safe-

ty reasons and to ensure optimal noise trans-

mission.

5.2. Receiver

1. Position the receiver vertically in your vicinity.

2. You can operate the receiver either with the

enclosed charging station from your mains

supply or with the enclosed rechargeable bat-

teries.

3. Proceed as described in “

8. Charging the

rechargeable batteries

” for accumulator op-

eration.

4. Connect one of the two enclosed power

packs to the mains socket of the charging

station, if you want to operate the device by

charging station.

5. The device is switched on and one of the two

transmission channels selected with the slide

switch (5). The device receives on channel 1

in the position “K1“ and on channel 2 in the

position “K2“. The receiver volume can be set

according to your needs with help of the vol-

ume control (4).

6. The LED (2) lights up red in the ready status

as soon as the receiver is connected to the

charging station. The LED (2) lights up green,

if the device receives a signal. The receiver

is furthermore provided with a LED chain (7).

The LED chain not only acoustically, but

also visually signals a transmitted noise. The

number of lit up diodes corresponds to the

amplitude of the received noise.

7. The receiver automatically goes into the en-

ergy saving mode some seconds after the de-

vice has ceased to receive any signals. This is

indicated by the illuminated red reception in-

dicator (2).

Note! The rechargeable batteries must stay in

the receiver when using the charging station;

the device does not work without rechargea-

ble batteries!

Further original power packs can be

ordered with the enclosed order card.

The operational status indicator (2) ﬂ ashes

alternatively red and green during reception

when the receiver, which receives a signal from

the transmitter, is operated via the charging

station with discharged rechargeable batteries.

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Comtel CT 1900 Manual

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