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Operation Guide 5179
Timekeeping Mode
Hour
Minute
hand
Press C.
hand
24-hour
hand
World Time Mode
Press C.
Day of
Second
the week
Day
hand
Current time in
the selected
World Time City
E-10
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.
City code
3. After the Home City setting is the way you want, press
A to return to the Timekeeping Mode.
Second hand
E-12
Home City Code
Transmitter
LON: London
German/U.K. Signals
PAR: Paris
Anthorn (England)
ATH: Athens
Mainflingen (Germany)
China Signal
HKG: Hong Kong
Shangqiu City (China)
Japan Signals
TYO: Tokyo
Fukushima (Japan)
Fukuoka/Saga (Japan)
(HNL): Honolulu
U.S. Signal
(ANC): Anchorage
Fort Collins, Colorado
LAX: Los Angeles
(the United States)
DEN: Denver
CHI: Chicago
NYC: New York
E-14
Approximate Reception Ranges
U.K. and German Signals
1,500 kilometers
Mainflingen
Anthorn
500 kilometers
The Anthorn signal is
receivable within this
area.
E-16
• 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-18
Stopwatch Mode
(page E-31)
(page E-34)
Press C.
Frequency
60.0 kHz
77.5 kHz
68.5 kHz
40.0 kHz
60.0 kHz
60.0 kHz
U.S. Signal
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
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.
• 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.
• 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.
Japan Signals
500 kilometers
Fukuoka/Saga
1,000 kilometers
1,500 kilometers
500 kilometers
Chengdu
Shangqiu
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.
If your Home Time city code is one that supports time calibration signal reception
(except for China), the watch will automatically switch between standard time and
summer time in accordance with the signal data. For other city codes, you will need to
switch manually.
• For information about the DST setting, see "To set your Home City time" (page
E-38).
• 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.
E-11
E-13
E-15
500 kilometers
Fukushima
1,000 kilometers
China Signal
Changchun
Beijing
Shanghai
Hong Kong
E-17
E-19
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