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Operation Guide 5060
2
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 “Configuring Current
Time and Date Settings Manually” 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.
If your Home City Code setting
is this:
The watch can receive the signal from the
transmitter located here:
LON, PAR, ATH Anthorn (England), Mainflingen (Germany)
HKG Shangqiu City (China)
TYO Fukushima (Japan), Fukuoka/Saga (Japan)
HNL, ANC, LAX, DEN, CHI, NYC Fort Collins, Colorado (United States)
Important!
The areas covered by • HNL and ANC are quite far from the calibration signal
transmitters, so certain conditions may cause reception problems.
When • HNL or HKG is selected as the Home City, only the time and date are
adjusted according to the time calibration signal. You need to switch manually
between standard time and daylight saving time (DST) if required. See “To toggle
the Home City time between standard time and daylight saving time” for information
about how to do this.
Approximate Reception Ranges
Even when the watch is within range of a transmitter, signal reception may be •
impossible due to the effects of geographic contours, structures, weather, the time
of year, the time of day, radio interference, etc. The signal becomes weaker at
distances of approximately 500 kilometers, which means that the influence of the
conditions listed above becomes even greater.
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.
Mainflingen (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 January 2008, 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.
To get ready for a receive operation
Confirm that the watch is in the Timekeeping Mode. If it isn’t, hold down 1. C for
about two seconds to enter the Timekeeping Mode.
Place the watch in a location where signal reception is good.2.
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.
Signal reception may be difficult or even impossible under the conditions •
described below.
UK and German Signals
Anthorn
500 kilometers
1,500 kilometers
Mainflingen
The Anthorn signal is receivable
within this area.
North American Signal
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
Japanese Signal
Fukushima
500 kilometers
1,000 kilometers
Fukuoka/Saga
Chinese Signal
1,500 kilometers
Changchun500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
12 o’clock
or
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances,
office
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
What you should do next depends on whether you are using Auto Receive or 3.
Manual Receive.
Auto Receive: Leave the watch over night in the location you selected in step 2. •
See “Auto Receive” for details.
Manual Receive: Perform the operation under “To perform manual receive”. •
Auto Receive
With Auto Receive, the watch performs the receive operation each day •
automatically up to six times (up to five 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 or World Time Mode. The receive operation is
not performed if a calibration time is reached while you are configuring settings.
To perform manual receive
In the Timekeeping Mode, keep 1. A depressed (for about two seconds) as the
x Second Hand goes through the following sequence.
Moves to the last signal reception result ( • Y or N), then to READY (or R for some
models).
The 2.
x Second Hand indicates the operations the watch is currently performing.
When the x Second
Hand is pointed here:
It means this:
READY (R) Watch is setting up for reception.
WORK (W) Reception is in progress.
YES (Y)
Reception was completed
successfully.
NO (N) Reception failed for some reason.
If signal reception is unstable, the • x Second Hand
may move between WORK and READY.
The receive operation is complete when the 3.
x Second
Hand moves to YES (Y) or NO (N) for about five
seconds, and then resumes normal timekeeping.
When the receive operation is successful, the watch •
adjusts the time setting accordingly. It does not adjust
the setting if the operation failed.
Note
To interrupt a receive operation and return to the •
Timekeeping Mode, press any button.
If the •
x Second Hand is pointing to YES (Y) or NO
(N), you can return to the Timekeeping Mode by
pressing A.
To check the result of the latest receive operation
In the Timekeeping Mode, press A.
The •
x Second Hand will move to YES (Y) for five
seconds if the latest receive operation was successful,
or NO (N) if it was not. After that, normal timekeeping
will resume.
Note
The •
x Second Hand will indicate NO (N) if you have
adjusted the time or date setting manually since the
latest receive operation.
If the •
x Second Hand is pointing to YES (Y) or NO (N),
you can return to the Timekeeping Mode by pressing A.
Radio-controlled Atomic Timekeeping Precautions
Strong electrostatic charge can result in the wrong time setting. •
Even if a receive operation is successful, certain conditions can cause the time •
setting to be off by up to one second.
The watch is designed to update the date and day of the week automatically for •
the period January 1, 2000 to December 31, 2099. Updating of the date by signal
reception will no longer be performed starting from January 1, 2100.
If you are in an area where signal reception is not possible, the watch keeps time •
with the precision noted in “Specifications”.
The receive operation is disabled under any of the following conditions. •
While power is at Level 2 or lower −
While the watch is in the power recovery mode −
When the watch is in the function sleep state (power saving) −
While a countdown time operation is in progress −
A receive operation is cancelled if an alarm sounds while it is being performed. •
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