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Operation Guide 5178
E-10
Timekeeping Mode
30
30
Press C.
Stopwatch Mode
(page E-31)
World Time Mode
(page E-34)
30
Current time in
the selected
World Time City
Minute hand
Day
Hour hand
24-hour
hand
Second hand
Day of the
week
▲
▲
▲
Press C.
Press C.
E-11
Radio-controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
•
Supported time calibration signals: Germany (Mainflingen), England (Anthorn), United
States (Fort Collins), China (Shangqiu), and Japan (Fukushima or Fukuoka/Saga)
• See the information under “Signal Reception Troubleshooting” (page E-29) if you
experience problems with time calibration signal reception.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration
signal. You also can perform a manual procedure to set the time and date, when
necessary.
• The first thing you should do after purchasing this watch is to specify your
Home City, which is the city where you normally will use the watch. For more
information, see “To specify your Home City” on page E-12.
• When using the watch outside the areas covered by the time signal transmitters, you
will have to adjust the current time setting manually as required. See
“Configuring
Time and Date Settings Manually” (page E-41) for more information about manual
time settings.
E-12
To specify your Home City
1. In the Timekeeping Mode, keep A depressed (for
about five seconds) as the second hand moves to the
last signal reception result (“Y” or “N”), then to “READY”
(or “R” for some models), and then to the city code of
the currently selected Home City.
• This indicates the city code setting mode.
2.Use D to move the second hand clockwise to the city
code you want to use as your Home City.
• For information about the Home City, see “Home City
Codes and Transmitters” (page E-13). The watch will
receive the time calibration signal of the transmitter of
the selected city code.
3.After the Home City setting is the way you want, press
A to return to the Timekeeping Mode.
30
Second hand
City code
E-13
• Normally, your watch should show the correct time as soon as you specify your
Home City code. If it does not, it should adjust automatically after the next auto
receive operation. You also can perform manual receive (page E-26) or you can set
the time manually (page E-41).
• Even if the time calibration signal is received correctly, there are some times when
the analog hands may not indicate the correct time. If this happens, use the
procedures under “Auto Hand Home Position Correction” (page E-45) to check the
home positions of the hands, and make adjustments as required.
Home City Codes and Transmitters
• The time calibration signal the watch will attempt to pick up depends on its current
Home City code setting as shown below. If you use the watch in Japan or Europe
(each of which has two different transmitter locations), it will try to receive the time
calibration signal from one of the transmitters in your current location. If it cannot
receive the signal, it will then try to receive the time calibration signal from the other
transmitter.
E-14
Home City Code
LON: London
PAR: Paris
ATH: Athens
HKG: Hong Kong
TYO: Tokyo
(HNL): Honolulu
(ANC): Anchorage
LAX: Los Angeles
DEN: Denver
CHI: Chicago
NYC: New York
Frequency
60.0 kHz
77.5 kHz
68.5 kHz
40.0 kHz
60.0 kHz
60.0 kHz
Transmitter
German/U.K. Signals
Anthorn (England)
Mainflingen (Germany)
China Signal
Shangqiu City (China)
Japan Signals
Fukushima (Japan)
Fukuoka/Saga (Japan)
U.S. Signal
Fort Collins, Colorado
(the United States)
E-15
• City codes in parentheses indicate areas where reception may be possible only
when conditions are good.
• For full information on city codes, see the “City Code Table” at the back of this
manual.
• In addition to the above, you also can select city codes that are outside the ranges of
the time calibration signal transmitters supported by this watch.
• Note that this watch does not have a city code that corresponds to Newfoundland.
• The U.S. time calibration signal can be picked up by the watch while in North
America. The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
• As of December 2010, 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 that is different from the
countries it supports may result in incorrect time indication due to local application of
summer time, etc.
E-16
2,000 miles
(3,000 kilometers)
U.K. and German Signals
Anthorn
Mainflingen
1,500 kilometers
500 kilometers
The Anthorn signal is
receivable within this
area.
U.S. Signal
Fort Collins
600 miles
(1,000 kilometers)
Approximate Reception Ranges
E-17
Shangqiu
1,000 kilometers
1,000 kilometers
Fukuoka/Saga
500 kilometers
Fukushima
500 kilometers
500 kilometers
Changchun
Beijing
1,500 kilometers
Shanghai
Chengdu
Japan Signals
China Signal
Hong Kong
E-18
• Signal reception may not be possible up to 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)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• See the information under “Signal Reception Troubleshooting” (page E-29) if you
experience problems with time calibration signal reception.
E-19
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
• The watch will adjust the DST setting automatically when it receives a time
calibration signal while any one of the following city codes is selected as the Home
City.
LON, PAR, ATH, TYO, ANC, LAX, DEN, CHI, NYC
• The watch will not adjust the DST setting automatically while either of following city
codes is selected as the Home City. In this case, you will need to change between
standard time and daylight saving time manually.
HKG, HNL
• For information about the DST setting, see “To set your Home City time” (page
E-38).
• As of June 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.