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Operation Guide 5351
E-20
Power Saving
Power Saving enters a sleep state (second hand sleep or function sleep) whenever
the watch is left for a certain period in an area where it is dark.
Elapsed Time in Dark Operation
60 to 70 minutes
(second hand sleep)
x
Second Hand only stopped at 12 o’clock, all other functions
enabled
6 or 7 days
(function sleep)
• All functions, including analog timekeeping, disabled
• Internal timekeeping maintained
• The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is
already in a sleep state when 6:00 AM arrives, however, it will remain there.
• The watch will not enter a sleep state while it is in the Stopwatch Mode or
Countdown Timer Mode.
To recover from the sleep state
Move the watch to a well-lit area or press any button.
E-21
Radio Controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
However, when using the watch outside of areas covered by time calibration signals,
you will have to adjust the settings manually as required. See “Confi guring Current
Time and Day Settings Manually” (page E-42) for more information.
This section explains how the watch updates its time settings when the city code
selected as the Home City is in Japan, North America, Europe, or China, and is one
that supports time calibration signal reception.
E-22
If your Home City Code setting is this:
The watch can receive the signal from
the transmitters located here:
LON (LONDON), PAR (PARIS), ATH (ATHENS)
Anthorn (England),
Mainfl ingen (Germany)
HKG (HONG KONG) Shangqiu City (China)
TYO (TOKYO)
Fukushima (Japan),
Fukuoka/Saga (Japan)
HNL (HONOLULU), ANC (ANCHORAGE),
LAX (LOS ANGELES), DEN (DENVER),
CHI (CHICAGO), NYC (NEW YORK)
Fort Collins, Colorado (United States)
Important!
• The areas covered by HNL (HONOLULU) and ANC (ANCHORAGE) are quite far
from the calibration signal transmitters, so certain conditions may cause reception
problems.
E-23
Approximate Reception Ranges
UK and German Signals North American Signal
Anthorn
500 kilometers
1,500 kilometers
Mainfl ingen
The Anthorn signal is receivable
within this area.
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
E-24
Japanese Signals Chinese Signal
Fukushima
500 kilometers
1,000 kilometers
Fukuoka/Saga
1,500 kilometers
Changchun500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
E-25
• Signal reception may not be possible at the distances noted below during certain times
of the year or day. Radio interference may also cause problems with reception.
− Mainfl ingen (Germany) or Anthorn (England) transmitters: 500 kilometers
(310 miles)
− Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
− Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
− Shangqiu (China) transmitter: 500 kilometers (310 miles)
• As of December 2012, China does not use Daylight Saving Time (DST). If China
does go to the Daylight Saving Time system in the future, some functions of this
watch may no longer operate correctly.
• Using this watch in a country covered by a time calibration signal that is different
from the countries it supports may result in incorrect time indication due to local
application of daylight saving time (summer time), etc.
E-26
To get ready for a receive operation
1. Confi rm that the watch is in the Timekeeping Mode. If it isn’t, hold down C for at
least two seconds to enter the Timekeeping Mode.
2. Place the watch in a location where signal reception is good.
12 o’clock
or
• Position the watch as shown in the
nearby illustration, with 12 o’clock
pointed towards a window. Make
sure there are no metal objects
nearby.
• Signal reception normally is better
at night.
• The receive operation takes from
two to seven minutes, but in some
cases it can take as long as
14 minutes. Take care that you do
not perform any button operation or
move the watch during this time.
E-27
• Signal reception may be diffi cult or even impossible under the conditions
described below.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances,
offi ce
equipment,
or a mobile
phone
Near a
construction
site, airport,
or other
sources of
electrical
noise
Near
high-tension
power lines
Among
or behind
mountains
E-28
3. What you should do next depends on whether you are using Auto Receive or
Manual Receive.
• Auto Receive: Leave the watch over night in the location you selected in step 2.
See “Auto Receive” on page E-28 for details.
• Manual Receive: Perform the operation under “To perform manual receive” on
page E-29.
Auto Receive
• With Auto Receive, the watch performs the receive operation each day
automatically up to six times (up to fi ve times for the Chinese calibration signal)
between the hours of midnight and 5 a.m. (according to the Timekeeping Mode
time). When any receive operation is successful, none of the other receive
operations for that day are performed.
• When a calibration time is reached, the watch will perform the receive operation
only if it is in the Timekeeping Mode. The receive operation is not performed if a
calibration time is reached while you are confi guring settings.
E-29
To perform manual receive
1. In the Timekeeping Mode (page E-36), keep B depressed (for about two seconds) as
the x
Second Hand goes through the following sequence.
• Moves to HIGH, MID, or LOW to indicate the power level and then moves to
R (READY).
2. The x
Second Hand indicates the operations the watch is currently performing.
When the x Second Hand
is pointed here:
It means this:
R (READY)
Watch is setting up for reception.
W (WORK) Reception is in progress.
• If signal reception is unstable, the x Second Hand
may move between W (WORK) and R (READY).
• When the receive operation is successful, the watch
adjusts the time setting accordingly, and then
resumes regular timekeeping. It does not adjust the
setting if the operation failed.
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