Junghans Atomic watch User manual

Junghans. Zeit bewegt uns.
Atomic watch
Reloj atómico
Instruction Manual
Manual de instrucciones
JUNGHANS UHREN GmbH · Postfach 100 · D-78701 Schramberg
www.junghans.de · E-mail: [email protected]
42.712-0364/0402

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1. Technology description
The most accurate clock in America is the atomic cesium clock located
at: U.S. Department of Commerce
National Institute of Standards and Technology (NIST)
Boulder, Colorado
Your Junghans atomic watch receives ”time telegrams” on long wave
radio (60 kHz) from the NIST operated WWVB time signal transmitter
located in Fort Collins, Colorado and coupled with the atomic caesium
clock in Boulder. Until recently, the transmitter was used predominant-
ly by telephone companies, radio and television stations, navigators of
planes and ships, and for scientific purposes in laboratories. Now this
precise signal can be received by the Junghans atomic watch tech-
nology.
Your Junghans atomic watch receives the WWVB time signal via its
built-in antenna system. The proper function of the receiver contained
in this product has been tested as a prototype with regard to its sensiti-
vity and range of reception in different places throughout the United
States.
Any claim for warranty – express or implied – due to the watch's
failure to properly receive the radio signal because of interference,
whatever may be the source of this interference, are hereby expressly
excluded in all respects.
For more information about the WWVB-Radio signal visit NIST’s
website at: www.boulder.nist.gov
For actual signal coverage in North America visit:
www.boulder.nist.gov/timefreq/stations/wwvbcoverage.htm
The Junghans atomic watch's internal computer processes the received
time signals and automatically synchronizes the hands, date and the
change over between daylight savings time and standard time and the
leap year accordingly. The signal reception and synchronization occurs
automatically every night and manually upon demand.
Even outside of the reception range your Junghans atomic watch will
continue to keep excellent time. The highly accurate 32 kHz quartz
movement will ensure precise time keeping.
For technical questions please contact our customer service center at
Egana of Switzerland (America) Corp., FL, Ph.: 1-800-260-3151.
For replacing the battery, please send your watch to:
PWH Attn: Service Department, 1024 Reservoir Ave., Cranston,
RI 02910, Ph.: (401)-944-5100.

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2. Functional description
Fig. 2
T1 button (mode):
The T1 button has two functions:
1) Switches digital display between date (for example
12.31 ) and time
zone (for example,
P02 AM ). The letter P,M,C or E in front of the
digitally displayed hour shows the respective U.S time zone Pacific,
Mountain, Central, or Eastern.
2) Receives the WWVB time signal and synchronizes the time auto-
matically.
T2 button (adjust):
Depending on the mode the T2 button either
1) Advances the time zone in 1 hour increments when setting the time
zones.
2) Advances the hands when manually synchronizing the watch (only
after battery change).
3. Synchronizing the time (signal reception)
The automatic signal reception and synchronization occurs auto-
matically every night. At any desired time you can perform a "manual"
reception by pressing the T1 button for at least 3 seconds. The hands
will set to the 12 o'clock position during reception and will reset
themselves thereafter. Note that your Junghans atomic watch will not
receive the WWVB time signal if set to a time zone other than Pacific,
Mountain, Central or Eastern standard time.
4. Setting the time zone
The factory preset time zone is Pacific standard time. You can set an
alternative time zone as follows:
1) Press the T1 button. The digital display will change from displaying
the date (for example,
12.31 ) to displaying the current hour (for
example,
P02 AM ). The letter P, M, C or E in front of the digitally
displayed hour stands for Pacific, Mountain, Central and Eastern
standard time respectively.

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2) Press (either short for incremental advance or long for rapid
advance) the T2 button to set the desired hour for your time zone.
Please take note of the AM/PM symbols in the digital display.
The proper date will be calculated by the internal microprocessor.
And at the end of the adjustment the display returns to the default
value.
5. Replacing the battery
A low battery is signaled by the second hand remaining in the
12 o'clock position and a blinking ”
LO ” in the digital display.
The battery should be replaced by trained personnel to avoid damage
and ensure water resistance according to factory specifications.
After battery replacement your Junghans atomic watch will automati-
cally receive the WWVB signal and set itself to Pacific standard time.
You must then either press the T1 button to confirm the time or set the
desired time zone as described in 4. Setting the time zone.
Dependent on your location and/or the time of day it may take bet-
ween 3 and 30 minutes for a successful reception of the time signal.
If you find yourself outside of the reception range or in a
disturbance field, you need to synchronize the time manually as
follows.
Synchronizing the time after battery change:
In case the watch does not receive the WWVB-signal immediately
after the battery change, the time can be set manually as follows.
1) Press the T2 button to advance the hands. The hands can be advan-
ced either incrementally by repeatedly pressing the T2 button or
rapidly by holding the T2 button pressed. The digital display shows
the minutes.
2) Press the T1 button to confirm and set the time. The digital display
will go blank. It is not possible to set the date in the manual syn-
chronized mode.
After manual synchronization, your Junghans atomic watch attempts
to receive an automatic signal every hour on the hour until the
WWVB signal has been successfully received.
After having received a signal, the Junghans atomic watch sets itself
to Pacific standard time. You must then either press the T1 button to
confirm the time or set the desired time zone as described
in 4. Setting the time zone.

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6. Technical data
Reception frequency 60 kHz, amplitude modulated,
WWVB coding
Receiver range See 1. Technology description
Quartz time base 32 kHz
Battery type Li CR 1620 (3V/68 mAh)
Operating range voltage 2.4 V to 3.4 V
Battery life 2 years (approximately)
Operating temperature – 0 °C to 50 °C / 32 °F to 122 °F
Storage temperature – 10 °C to 60 °C / 14 °F to 140 °F
Limited Warranty
This Junghans product is warranted by Junghans to the customer
for a period of one (1) year from the date of original purchase
("warranty period") against defects in material and workmanship.
If such a defect occurs during the warranty period Junghans will –
at its option – repair or replace the product provided that proof of
date an place of purchase is supplied by the customer. This limi-
ted warranty does not cover bracelets, straps, crystals, batteries or
wear to the case nor does it apply in case of misuse or abuse
including defects caused by servicing not performed by an au-
thorized Junghans SERVICE CENTER.
Exclusion of Warranty
The proper functioning of the receiver contained in this product
has been tested as a prototype with regard to its sensitivity and
range of reception in different places throughout the United
States. Any Claims for warranty – express or implied – due to the
clock's failure to properly receive radio signals because of interfe-
rence whatever may be the source of that interference are hereby
expressly excluded in all respects.
Service for your Junghans atomic watch
Should your watch require service, please send it in its original
box to: PWH · Attn: Service Departement
I024 Reservoir Ave. · Cranston, RI 029I0
I-40I-944-5I00

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7. Trouble shooting
Symptom Description Problem Solution
1) Hands move but the The watch has been manually You may be out of If you find yourself within the reception
digital display is blank synchronized and has not yet reception range range (see fig. 1), press the T1 button for
received WWVB time signal. (see 1. Technology description). at least 3 seconds and place your watch in
a free field* position for at least 9 minutes,
preferably at night when reception is best.
You may be in or near a Press the T1 button and place your watch
disturbance field such as a in a free field* position for at least
metal structure, appliances or 30 minutes, preferably at night when
particular climatic conditions. reception is best.
The watch movement may be Your watch must be serviced.
damaged.
2) The second hand remains in the The battery is running low. The battery must be replaced
12 o'clock position and the letters (see 5. Replacing the battery).
” LO ” blink in the digital display.
3) Your watch does not automatically The watch has not received Your watch may be set to a time Reset the watch to a US time zone
change between daylight savings the WWVB time signal. zone other than a US time zone. (see 4. Setting the time zone).
time and standard time. After pressing the T1 button,
the letter P, M, C, or E must
appear in the digital display.
You may be out of reception Press the T1 button for at least 3 seconds
range (see Fig. 1 under after reentering the reception range.
1. Technology description).
You may be in or near a Press the T1 button and place your watch
disturbance field such as a in a free field* position for at least
metal structure, appliances or 9 minutes, preferably at night when
particular climatic conditions. reception is best.
The watch movement may Your watch must be serviced.
be damaged.

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Symptom Description Problem Solution
4) The hands do not move and The battery may be empty. The battery must be replaced
digital display is blank. (see 5. Replacing the battery).
5) The second hand remains stationary This is a normal state during
at the 15 second position for several signal reception and is necessary
minutes. for optimal reception.
*Free field position means a place free of radio disturbances such as
electrical appliances, metal structures and particular climatic conditions.
This product complies with the EMC directives of the European Union and
is subject to technical changes without notice.
For more information on Junghans and atomic watch technology see our
internet site at www.junghanswatches.com