La Crosse Technology RADIO CONTROLLED ALARM CLOCK WITH SOLAR PANEL Operating Manual

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RADIO CONTROLLED ALARM CLOCK WITH SOLAR PANEL

OPERATING MANUAL

INTRODUCTION:

Congratulations on purchasing this Alarm Clock with solar panel with DCF-77 radio­controlled time. The operation of this product is simple and straightforward and by
reading this operating manual, users will receive the optimum benefits of all its
features.

The alarm clock

FEATURES:

• DCF-77 Radio controlled clock with manual setting option

• 24 hours time display

• Calendar: date and month

• Alarm snooze programmable durat i on (1-59 min)

• Time zone setting (±9 hours)

• Two independent alarm time settings

• LCD back-light

• Rechargeable alkaline 1,5V battery

SETTING UP:

SNOOZE/24HR AL/

key

Battery cover

Battery compartment

Battery cover

1. Firstly, flip open the battery cover at the back of the alarm clock and remove the

insulation plastic piece from the battery compartment.

2. Checking the correct polarization, insert the provided 1.5V rechargeable alkaline

battery into the battery compartment and replace the cover.

Note:

The included battery is a rechargeable alkaline battery. It needs to be inserted into
the battery compartment as power source for normal operation. The solar panel itsel f
does not provide enough power to operate the clock.

AL/MIN key

AL/HR key

Solar panel

3. When the battery is inserted, all the segments of the LCD will light up briefly and
alarm beeps once.

4. The time (hour, minutes and seconds) will be represented by “--:-- -- “. The DCF
reception tower at the top of the seconds will start flashing and the alarm times
will be shown at the preset time of 6:00.

5. The clock will now start receiving the DCF time signal. After approximate 3 to 5
minutes, the DCF time will be displayed.

6. If reception is not successful within approximately 7-10 minutes, it will attempt to
receive the signal in the next following hour (DCF time reception is every full

hour). The reception is temporarily terminated. Your alarm clock is now

operational.

IMPORTANT!

• It is recommended to place the alarm clock under any source of light

daily for 12 hour to allow sufficient charging time for the rechargeable
alkaline battery. Under this recommended condition, the rechargeable
alkaline battery life can be used up to 5 years. Otherwise the life
expectancy of the battery is approximately 2 years, depending on alarm
activation times and backlight usage.

• Do not use any normal Ni-Cd or NiMH or Lithium battery charger to

recharge the rechargeable alkaline battery. Only use a charger unit
designed for this specific type of battery and purpose.

• Do not insert any other kind of battery other than the 1,5V rechargeable

alkaline battery in the battery compartment as they may cause damage
to the clock and may result to cause an explosion!

Note:

If the low battery indicator is displayed on the LCD, position the alarm clock under
any source of light or place the rechargeable battery into an appropriate Alkaline
charger to charge up its rechargeable alkaline battery.
Unless the alarm clock is manually reset, the low battery indicator will remain
displayed.

BATTERY CHANGE:

Please help in the preservation of the environment. Return used
batteries to an authorised depot.

LCD SCREEN

DCF-77 Tower Icon

Time

Calendar display
(date and month),

alternatively ALARM 2

Alarm time

Alarm 1 Icon

RADIO CONTROLLED TIME:

The time base for the radio-controlled time is a Cesium Atomic Clock operated by
the Physikalisch Technische Bundesanstalt Braunschweig which has a time
deviation of less than one second in every one million years.
The time is coded and transmitted from Mainflingen near Frankfurt via frequency
signal DCF-77 (77.5 khz) and has a transmitting range of approximately 1,500 km.
The alarm clock receives this signal and converts it to show the precise time and so
when within this range the received time is completely accurate.

CHECKING FOR DCF-77 RECEPTION:

The alarm clock will automatically start scanning for the DCF-77 frequency signal

after the battery is inserted. In normal surroundings (for example away from

interfering sources such as TV sets), it takes between 3-5 minutes to receive the
signal. If after 10 minutes of inserting the battery into the alarm clock and the DCF-

77 signal is not received, then check the following list before manually setting the
time (see Manual time setting):

1. The distance of the alarm clock should be at least 1.5-2.0 meters away from
interfering sources such as computer monitors or TV sets.

2. Avoid placing the alarm clock onto or in the immediate proximity of metal, doors,
windows frames or structures.

3. Within thick concrete rooms such as basements and tower blocks, the DCF-77
signal is naturally weaker. In extreme cases, place the alarm clock closer to a
window and/or point its front or rear towards the general direction of the

Frankfurt/Main transmitter (avoid positioning within close proximity of metal
frames or structures).

Note:

Users may be located in areas where atmospheric disturbances are the direct cause
for not receiving the DCF-77 frequency signal. During nighttime, atmospheric
disturbances are usually less severe and reception is possible in most cases. With a
single daily reception, it is adequate for the alarm clock to keep time deviation to
below 0.5 seconds in a period of 24 hours.

When reception is successful, the DCF-77 tower icon will start flashing on the LCD.

Once the signal is “locked”, the DCF-77 tower icon will stay fixed on LCD and the
received time will automatically correct the manually set time. As well as the time,
the date will also be received by the alarm clock and will be displayed accordingly in
the calendar section of the LCD.

FUNCTION KEYS:

The radio-controlled alarm clock uses the following keys:

SNOOZE/ : Alarm snooze function

24HR AL/ : Enter time setting mode, time zone and snooze duration, stop

alarm and snooze

: Back-light-On

AL/HR : Alarm 1 time setting, alarm 1 icon (((1))), alarm STOP for alarm 1

: Set the hours and time zone