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RADIO CONTROLLED ANALOG CLOCK

INSTRUCTION MANUAL

Quick Setup Instructions

Welcome to the world of atomic timekeeping technology. We hope you will enjoy

the convenience of never having to set your clock again and the confidence of

knowing exactly what time it is.

• Insert 1 new AA, LR6 1.5 volt ALKALINE battery into the digital clock battery

compartment (the lower battery compartment) according to the polarity

marked on the case, then 1 new battery AA, LR6 1.5 V into the analog clock

battery compartment according to the polarity marked on the case.

• Once the battery is installed, the clock will begin searching for a signal. For

the initial setting, it is recommended to stand the clock in an upright position

near a window. Within five minutes the clock will either receive the WWVB

signal and set itself to the exact time (for the default Pacic Time Zone), or it

will determine that the signal is not receivable at its current location and time

of day. The clock will fast-forward the hands to the 4, 8, or 12 o’clock

position immediately and search for WWVB at specific time each day until a

signal is received.

Note: If the time is manually set, the clock will continue to periodically

search for a signal and automatically reset the hands when the signal is

received.

• Once the clock has received the WWVB signal, press the time zone button

to select your time zone. If you are in the Pacific Time Zone, no change is

needed and you are ready to hang your clock.

If you are not in the Pacific Time Zone, select your time zone by pressing

one of the four time zone buttons PT-Pacific Time, MT-Mountain Time, CT-

Central Time, ET-Eastern Time and holding this button down for 5 seconds.

If multiple buttons are pressed, the clock will set to the time zone selected

last. If no time zone is selected the clock will default to Pacific Time. If you

live in an area that does not recognize DST (Arizona) you must press the

DST button (unmarked – just above and between the Central and Eastern

time zone buttons) for one second to deactivate your clock’s DST program.

For time zones outside of PT, MT, CT or ET you must manually set the time

using the Manual Time set button on the back of the movement. (See

instructions below).

Please Note: WWVB time will over ride a manual setting.

BATTER

COMPARTMENT

FOR THE

DIGITAL CLOC

BATTERY

COMPARTMENT

FOR THE

NALOG CLOCK

MANUAL TIME SET

BUTTON

PACIFIC TIME

CENTRAL TIME

For a better understanding of how and why your clock works please continue

reading.

NOTHING IS MORE PRECISELY MEASURED THAN TIME!

And nothing keeps track of time more precisely and trouble free than La Crosse

Technology®® atomic clocks.

Since the beginning of time, man has been fascinated with the measurement of

time and has devised more accurate machines to measure time. Today, time is

precisely measured in the United States by the most accurate clock in North

America, the Atomic Clock of the US National Institute of Standards and

Technology, Time and Frequency Division in Boulder, Colorado. A team of atomic

physicists continually measures every second of every day to an accuracy of ten

billionths of a second per day. These physicists have created an international

standard, measuring a second as 9,192,631,770 vibrations of a Cesium 133 atom

in a vacuum. This atomic clock regulates the WWVB radio transmitter located in

Fort Collins, Colorado. From here the exact time signal is continuously

broadcasted throughout the United States at 60 kHz to take advantage of stable

long wave radio paths found in that frequency range. Radio waves at these low

frequencies use the earth and the ionosphere as a wave-guide and follow the

curvature of the earth for long distances.

The built in antenna system in your clock will receive the WWVB signal anywhere

in North America within 2000 miles of Fort Collins where long-wave radio

reception is undisturbed. A microprocessor activates the receiver and processes

the time signal from Fort Collins overnight.

Through the radio signals, La Crosse Technology® atomic clocks always keep

precise time. The changeover from standard time to daylight saving time, and vice

versa, takes place automatically with the same precision.

ADDITIONAL DETAILS

• The La Crosse Technology® atomic clock is designed for indoor use.

• For indoor locations, select a location to place your radio controlled clock

where it will be at least six feet away from a TV, computer, air conditioner or

other household electrical appliances.

• The optimal location is near a window. Windows facing Colorado provide the

best signal.

• Do not submerge clock in water.

• Extreme temperatures, vibration, and shock should be avoided to prevent

damage to the clock.

• The WWVB time signal will easily penetrate masonry and wood framed

buildings.

• The WWVB signal will penetrate almost every residential building and most

steel buildings if they have adequate windows. It is not possible, however, for

the WWVB signal to penetrate most indoor shopping malls and rooms in the

center of large office buildings that do not have windows.

• In buildings that WWVB cannot penetrate you may set the time using the

manual time set button. When the clock receives the WWVB signal it will

automatically set the hands to the exact time.

BATTERY

COMPARTMENT

EASTERN TIME

MOUNTAIN TIME DST ON/OFF BUTTON

La Crosse Technology® atomic clocks do not receive or process radio

controlled time signals from Germany’s DCF 77, Japan’s J Ga AS, or

England’s MSFs atomically regulated transmitters. La Crosse Technology®

atomic clocks can be manually set and used anywhere.

Please Note: WWVB time will over ride a manual setting.

For more information on the NIST and radio controlled time, see

www.boulder.nist.gov/timefreq/.

TO SET THE TIME USING THE MANUAL TIME SET BUTTON

In some cases, the La Crosse Technology® atomic clock may not receive the

WWVB signal due to atmospheric disturbances or hard to reach locations such as

inside shopping malls. In this case, please use the Manual Time Set button,

located at the back of the clock to manually set the time. To do this:

1. Remove the battery and press the Manual set button 10 times.

2. Insert 1 new AA Alkaline battery.

3. Press and hold the Manual Set button until the second hand of the clock

moves to the 12 position.

4. Release the Manual Set button and again press and hold the Manual Set

button. The minute and hour hands will fast-forward while the button is held.

5. Keep holding the Manual Set button until the time is set as required.

6. Release the button. About 3 seconds later, the second hands will start to

move and the clock is now running with manual time.

Note:

When the clock displays manual time, it will continue to try to receive the WWVB

signal at each of the even numbered hours: 0:00, 2:00, 4:00, 6:00 … 20:00 &

22:00.

DIGITAL CLOCK

1. Remove the battery cover at the back of the clock and insert 1 AA Alkaline

battery in the battery compartment.

2. All segments of the LCD will light up briefly, then the display “-:--“ and the

current indoor temperature will be displayed

Note: If the Display time is pressed while the analog clock is still searching

for the WWVB signal, the digital clock will display “--/--“ for the date and “-:--

“ for the world time.

3. Wait for the digital clock to receive the WWVB time and date from the

analog clock. Then the digital clock will start normal runs.

MANUAL TIME

SET

BUTTON

BATTERY COMPARTMENT

COVER

BATTERY COMPARTMENT

TIME SET KEY (FOR

WORLD TIME)

DISPLA

Produktspecifikationer

Varumärke:	La Crosse Technology
Kategori:	klocka
Modell:	WT-3128U-WH
Vikt:	1370 g
Anslutningsteknik:	Draadloos
Anslutningar:	4xISDN-2, \n8x analog
Förvaringstemperatur:	-20 - 70 °C
Spännande:	40 V
Dataöverföringshastigheter som stöds:	10/100 MBit/s
Protokoll som stöds:	DSS1
Mått (B x D x H):	260 x 240 x 50 mm
AC-ingångsspänning:	230 V
AC-ingångsfrekvens:	50 Hz
Drifttemperatur (TT):	0 - 40 °C