Junghans voyager mega mf User manual

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ENGLISH
JUNGHANS – THE GERMAN WATCH
Many congratulations on your purchase of a timepiece from
Junghans.
What began in 1861 with the founding of the firm in Schramberg
quickly developed into one of the most fascinating success stories
of the German watchmaking industry. While since that time the
demands made of watches may have changed, the Junghans
philosophy has always remained the same. Innovative flair and the
constant pursuit of precision right down to the smallest detail
define how the company works and thinks. You can see and sense
this in every watch that carries the Junghans name. For as diverse
as the Junghans range may be, it pursues one single goal: to
combine traditional craftsmanship with cutting-edge watch
technology and exciting design. That makes every watch with the
Junghans star unique.
We hope you will get great pleasure from this very special time-
keeping instrument.
Yours,
hrenfabrik Junghans GmbH & Co. KG

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1. Radio technology – The most up-to-date way to keep time
5,000 years have passed since timekeeping began with sundials. In the inte-
rim there have been water clocks, the mechanical clocks of the 13th century
and quartz watches. Now we have the radio-controlled watch. A watch that
in good reception conditions never goes wrong and never has to be set. The
Junghans radio-controlled watch is absolutely precise, as it is linked by radio
frequency to the time control systems of the most accurate clocks in the
world. For Europe this is the Caesium Time Base at the Physikalisch-
Technischen Bun des anstalt in Braunschweig (Germany’s Institute of
Natural and Engineering Sciences). For North America it is the U.S.
Commerce Department’s Caesium Time Base at the National Institute of
Standards and Technology (NIST) in Boulder, Colorado. For Japan the
Ministry of Post and Telecommunication’s Caesium Time Base at the
Commercial Research Laboratory (CRL). All of these clocks are so accurate,
that they are expected to deviate by no more than 1 second in a million years.
Contents Page
1. Radio technology – The most up-to-date way to keep time 29
1.1 Usable time signal transmitters 30
2. Readiness for use 32
3. Automatic time synchronisation 33
4. Functions 35
5. Selectable LCD displays 37
6. Description of watch functions and how to use them 37
6.1 Addition timer function 37
6.2 2nd Time 38
6.3 Reception display 38
6.4 Manual time synchronisation (transmitter calls) 39
6.5 Time-zone settings 41
6.6 Set language (day of the week display) 42
7. Re-starting after changing battery 42
7.1 Manual start 43
8. General information 45
9. Technical information 47

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1.1. Usable time signal transmitters
Your Junghans multi-frequency radio-controlled watch is capable of auto-
matic reception of time signals from the following transmitters:
– DCF77 in Mainflingen (Frankfurt am Main) for Europe
– WWVB in Fort Collins, Colorado (USA) for North America
– JJY40 on Mount Otakadoya (near Tokyo in the North East of the coun-
try) for Japan
– JJY60 on Mount Hagane (in the South West of Japan) for Japan, the
East Coast of China (Shanghai), South Korea and parts of Taiwan
With good reception, the Junghans multi-frequency radio-controlled watch
thus always shows the perfectly correct time within any of these four trans-
mission areas. The watch automatically synchronises itself overnight with
the DCF77, WWVB, JJY40 and JJY60 time signal transmitters. If reception fails
due to interference (e.g. stormy weather, electrical appliances or dimmer
switches), the Junghans multi-frequency radio-controlled watch will launch
renewed attempts to pick up the signal fully automatically the following
night. It is also possible to use a ‘transmitter call’ to synchronise the time
manually, for example at a location where reception conditions are better.
The latest time information received is stored in a time memory. This origi-
nal time continues to be kept using a high-precision 32kHz quartz move-
ment until the time is synchronised again. The radio-controlled time syn-
chronisation of your Junghans multi-frequency watch not only ensures an
always precise display of the time, but – given good reception – also takes
care of switching from winter to summer time, and vice versa, fully automa-
tically (at night). Please note that this does not apply to the USA’s WWVB
time signal trans mitter (see section 3 – Automatic time synchronisation). If
you travel to a country in a different time zone, the time adjustment facility
on your Junghans multi-frequency radio-controlled watch makes it easy to
switch to the appropriate local time.

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2. Readiness for use
So that your watch is always ready for use, you should make sure that it does
not run low on power. The watch regularly checks to see if it has sufficient
battery power. If it no longer has enough (e.g. the battery has run out or the
ambient temperature is too low, which impairs battery performance), the
second hand stops at the 12 o’clock position. Whatever display is set at that
time on the LCD also then flashes, alternating with the letters [Lo]. In this
event, the seconds may also be shown on the LCD display. If the battery does
not recover (e.g. through an increase in the ambient temperature), you
should take the watch as soon as possible to your authorised specialist to
have the battery changed, or send it to the Junghans Service Centre to have
this done.
Battery type: CR 1620
Typical life: Approx. 2 years
Please note that manual time synchronisation is not possible when battery
power is low. Too much power would be needed.
Please ensure that the battery is disposed of properly in accordance with
statutory regulations.
3. Automatic time synchronisation
The daily, fully automatic time synchronisation takes place at night. While
the watch is receiving the signal, the second hand temporarily stops in the 3
o’clock position. During reception, the flashing bar in the LCD display shows
that the reception attempt is being made.
For the USA’s WWVB time signal transmitter the following specific feature
applies:
After a successful transmitter call or battery change (restart), your Junghans
multi-frequency radio-controlled watch always reads in Pacific Standard
Time. Due to the non-uniform changeover from summer to winter time and
the differing time zones in the individual US states, you are given the oppor-
tunity to adjust winter time, summer time and time zone settings (see 6.5)
manually. If, due to where you are, the time zone or summer / winter time
that you have set differs from PST, it is nevertheless retained during any sub-
sequent transmitter call or automatic synchronisation.
T1
T2

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Following successful automatic synchronisation, the transmitter from
which the signal was picked up is permanently displayed. Thus if no signal
was picked up, no transmitter is displayed.
The date is always advanced automatically by the time signal. This process
also takes the 29th of February into account in leap years.
If all of the attempts at picking up a signal lead to no clear synchronisation,
the reception display is switched off (see also description of the ‘Reception
Display’ in section 6.3). On any such days without synchronisation, your
watch continues to run with the accuracy of a quartz timepiece, using the
internal time memory. As soon as the signal is picked up again successfully,
your watch is synchronised and the reception display is switched back on.
Recommendation: To ensure the best possible conditions for overnight
reception of the synchronisation signal, the watch should not be worn and,
if possible, not left near to any electrical appliances, mobile or cordless pho-
nes.
Important note:
When travelling into a different reception area (e.g. going from Germany to
Japan) no automatic time or thus transmitter synchronisation occurs until
the watch’s next attempt to pick up a signal. If the watch fails to pick up any
transmitter signal, please perform a manual transmitter call (see section 6.4
on manual synchronisation).
4. Functions
Please note: Depending on the model, your Junghans radio-controlled watch
is equipped with buttons or recessed correctors. Please use a suitable poin-
ted object to operate the recessed correctors.
Pusher lock (depending on model)
Depending on the model of your Junghans
radio-controlled watch you can block the T2
button. To do this, move the safety lever bet-
ween T1 and T2 downwards (in direction of
T2) until it engages and the red marking
becomes visible.
To restore all T2 functions, move the safety
lever upwards (in direction of T1).
T2
T1