Operation Guide 5351
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 | x Second Hand only stopped at 12 o’clock, all other functions |
(second hand sleep) | enabled |
6 or 7 days | • All functions, including analog timekeeping, disabled |
(function sleep) | • 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
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 Day Settings Manually” (page
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 transmitters located here: | ||
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LON (LONDON), PAR (PARIS), ATH (ATHENS) | Anthorn (England), | |
Mainflingen (Germany) | ||
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HKG (HONG KONG) | Shangqiu City (China) | |
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TYO (TOKYO) | Fukushima (Japan), | |
Fukuoka/Saga (Japan) | ||
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HNL (HONOLULU), ANC (ANCHORAGE), |
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LAX (LOS ANGELES), DEN (DENVER), | Fort Collins, Colorado (United States) | |
CHI (CHICAGO), NYC (NEW YORK) |
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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.
Approximate Reception Ranges
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 Signals | Chinese Signal | |
Fukushima | 500 kilometers | Changchun |
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500 kilometers |
| Beijing |
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Fukuoka/Saga |
| Shangqiu |
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| Shanghai |
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| Chengdu |
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| Hong Kong |
1,000 kilometers |
| 1,500 kilometers |
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•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.
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To get ready for a receive operation
1.Confirm that the watch is in the Timekeeping Mode. If it isn’t, hold down Cfor at least two seconds to enter the Timekeeping Mode.
2.Place the watch in a location where signal reception is good.
•Position the watch as shown in the nearby illustration, with 12 o’clock
12 o’clock | pointed towards a window. Make | |
sure there are no metal objects | ||
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or | nearby. | |
• Signal reception normally is better | ||
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| 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.
Inside or | Inside a | Near | Near a | Near | Among |
among | vehicle | household | construction | or behind | |
buildings |
| appliances, | site, airport, | power lines | mountains |
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| office | or other |
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| equipment, | sources of |
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| or a mobile | electrical |
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| phone | noise |
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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
•Manual Receive: Perform the operation under “To perform manual receive” on page
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. The receive operation is not performed if a calibration time is reached while you are configuring settings.
To perform manual receive
1.In the Timekeeping Mode (page
•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 | It means this: |
| is pointed here: |
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| R (READY) | Watch is setting up for reception. |
W (WORK) | Reception is in progress. | |
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| • 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.