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MO0907-EA
Operation Guide 4739
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to read this manual carefully.
Keep the watch exposed to bright light
Bright Light |
The electricity generated by the solar cell of the watch is |
stored by a built-in battery. Leaving or using the watch |
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where it is not exposed to light causes the battery to run |
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down. Make sure the watch is exposed to light as much as |
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Solar cell |
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possible. |
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• When you are not wearing the watch on your wrist, |
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position the face so it is pointed at a source of bright |
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light. |
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• You should try to keep the watch outside of your sleeve |
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as much as possible. Charging is reduced significantly if |
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the face is only partially covered. |
• The watch continues to operate, even when it is not exposed to light. Leaving the watch in the dark can cause the battery to run down, which will result in some watch functions to be disabled. If the battery goes dead, you will have to re-configure watch settings after recharging. To ensure normal watch operation, be sure to keep it exposed to light as much as possible.
Battery charges in the light. |
Battery discharges in the dark. |
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Solar cell |
Bright Light |
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(Converts light to |
Electrical |
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electrical power.) |
energy |
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LEVEL 1 |
All |
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LEVEL 1 |
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functions |
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LEVEL 2 |
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enabled |
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LEVEL 2 |
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LEVEL 3 |
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Dis- |
LEVEL 3 |
Some or all |
Charge |
LEVEL 4 |
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charge |
LEVEL 4 |
functions |
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disabled |
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Rechargeable battery
General Guide
•The actual level at which some functions are disabled depends on the watch model.
•Frequent display illumination can run down the battery quickly and require charging. The following guidelines give an idea of the charging time required to recover from a single illumination operation.
Approximately 5 minutes exposure to bright sunlight coming in through a window Approximately 50 minutes exposure to indoor fluorescent lighting
•Be sure to read “Power Supply” for important information you need to know when exposing the watch to bright light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function has turned off the display to conserve power.
• See “Power Saving Function” for more information.
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by you or any third party arising through the use of this product or its malfunction.
About This Manual
• Depending on the model of your watch, display text
appears either as dark figures on a light background, or
light figures on a dark background. All sample displays
in this manual are shown using dark figures on a light
background.
• Button operations are indicated using the letters shown
in the illustration.
• Most of the display examples in this manual show only the digital display, without the analog hands.
• Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the “Reference” section.
Countdown Timer Mode |
Stopwatch Mode |
•Press Cto change from mode to mode.
•In any mode (except when a setting screen is on the display), press Bto illuminate the face of the watch.
Battery Level Indicator
Timekeeping Mode
Press C.
▲
▲
World Time Mode |
▲ |
▲ |
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▲ |
Hand Setting Mode |
Alarm Mode |
▲ |
▲ |
Radio-controlled Atomic Timekeeping
Hour hand
Minute hand
Month Day
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), Japan.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration signal. You can also 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 (the city where you normally will use the watch). For more information, see “To specify your Home City”.
•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 “Timekeeping” for more information about manual time settings.
•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.
•The analog time of this watch is synchronized with the digital time. Because of this, the analog time setting is automatically adjusted whenever you change the digital setting. See “Analog Timekeeping” for more information.
To specify your Home City |
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City code |
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1. In the Timekeeping Mode, hold down Athe city code |
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starts to flash. This is the setting screen. |
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2. Press D(east) to select the city code you want to use |
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as your Home City. |
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• Time calibration signal reception is supported when |
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any one of the city codes shown in the table below is |
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selected as your Home City. |
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German/U.K. Signal |
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Japan Signal |
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U.S. Signal |
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City |
City |
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City |
City |
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City |
City |
City |
City |
City |
City |
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Code |
Name |
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Code |
Name |
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Code |
Name |
Code |
Name |
Code |
Name |
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LIS |
Lisbon |
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ATH |
Athens |
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HKG |
Hong Kong |
HNL |
Honolulu |
YWG |
Winnipeg |
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LON |
London |
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MOW |
Moscow |
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BJS |
Beijing |
ANC |
Anchorage |
CHI |
Chicago |
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MAD |
Madrid |
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TPE |
Taipei |
YVR |
Vancouver |
MIA |
Miami |
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PAR |
Paris |
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SEL |
Seoul |
LAX |
Los Angeles |
YTO |
Toronto |
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ROM |
Rome |
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TYO |
Tokyo |
YEA |
Edmonton |
NYC |
New York |
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BER |
Berlin |
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DEN |
Denver |
YHZ |
Halifax |
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STO |
Stockholm |
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MEX |
Mexico City |
YYT |
St. Johns |
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3. Press Ato exit the setting screen.
Important!
•Normally, your watch should show the correct time as soon as you select your Home City code. If it does not, it should adjust automatically after the next auto receive operation (in the middle of the night). You can also perform manual receive or you can set the time manually.
•The watch will receive the time calibration signal automatically from the applicable transmitter (in the middle of the night) and update its settings accordingly. For information about the relationship between city codes and transmitters, see “Home City Codes and Transmitters”.
•Under factory default settings, auto receive is turned off for all of the following city codes: MOW (Moscow), HKG (Hong Kong), BJS (Beijing), HNL (Honolulu), and ANC (Anchorage). For details about turning on auto receive for these city codes, see “To turn auto receive on and off”.
•You can disable time signal reception, if you want. See “To turn auto receive on and off” for more information.
•See the maps under “Approximate Reception Ranges” for information about the reception ranges of the watch.
•If you are in an area that does not use Daylight Saving Time (summertime), turn off the DST setting.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal: auto receive and manual receive.
•Auto Receive
With auto receive, the watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. For more information, see “About Auto Receive”.
•Manual Receive
Manual receive lets you start a time calibration receive operation with the press of a button. For more information, see “To perform manual receive”.
Important!
•The antenna of this watch is located on its 12 o’clock side. Position the watch with 12 o’clock facing towards a window as shown in the nearby illustration. Make sure there are no metal objects nearby.
12 o’clock
or
• Make sure the watch is facing the right way.
1
Operation Guide 4739
•Proper signal reception can be difficult or even impossible under the conditions listed below.
Inside or |
Inside a |
Near |
Near a |
Near high- |
Among or |
among |
vehicle |
household |
construction |
tension |
behind |
buildings |
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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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•Signal reception normally is better at night than during the day.
•Time calibration signal reception 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 operations or move the watch during this time.
•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.
Home City Codes and Transmitters
Home City Code |
Transmitter |
Frequency |
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LIS, LON, |
Anthorn (England) |
60.0 kHz |
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MAD, PAR, ROM, BER, |
77.5 kHz |
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Mainflingen (Germany) |
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STO, ATH, MOW* |
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HKG*, BJS*, TPE, |
Fukushima (Japan) |
40.0 kHz |
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SEL, TYO |
Fukuoka/Saga (Japan) |
60.0 kHz |
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HNL*, ANC*, YVR, |
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LAX,YEA, DEN, MEX, |
Fort Collins, Colorado |
60.0 kHz |
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YWG, CHI, MIA,YTO, |
(the United States) |
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NYC, YHZ,YYT |
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*The areas covered by the MOW, HKG, BJS, HNL, and ANC city codes are quite far from the time calibration signal transmitters, and so certain conditions may cause problems with signal reception.
Approximate Reception Ranges
UK and German Signals |
North American Signal |
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Anthorn |
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2,000 miles |
500 kilometers |
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(3,000 kilometers) |
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600 miles |
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1,500 kilometers |
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(1,000 kilometers) |
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The Anthorn signal |
Mainflingen |
Fort Collins |
is receivable within this area |
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Japanese Signals |
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500 kilometers |
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Fukushima |
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Fukuoka/Saga |
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Signals are receivable in the Taiwan area |
1,000 kilometers |
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when reception conditions are good. |
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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.
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)
•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” if you experience problems with time calibration signal reception.
About Auto Receive
The watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. The reception schedule (calibration times) depends on your currently selected Home City, and whether standard time or Daylight Saving Time is selected for your Home City.
Your Home City |
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Auto Receive Start Times |
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LIS, LON |
Standard Time |
1:00 am |
2:00 am |
3:00 am |
4:00 am |
5:00 am |
Midnight |
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next day |
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Daylight |
2:00 am |
3:00 am |
4:00 am |
5:00 am |
Midnight |
1:00 am |
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Saving Time |
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next day |
next day |
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MAD, PAR, ROM, |
Standard Time |
2:00 am |
3:00 am |
4:00 am |
5:00 am |
Midnight |
1:00 am |
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BER, STO |
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next day |
next day |
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Daylight |
3:00 am |
4:00 am |
5:00 am |
Midnight |
1:00 am |
2:00 am |
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Saving Time |
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next day |
next day |
next day |
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ATH |
Standard Time |
3:00 am |
4:00 am |
5:00 am |
Midnight |
1:00 am |
2:00 am |
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next day |
next day |
next day |
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Daylight |
4:00 am |
5:00 am |
Midnight |
1:00 am |
2:00 am |
3:00 am |
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Saving Time |
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next day |
next day |
next day |
next day |
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MOW |
Standard Time |
4:00 am |
5:00 am |
Midnight |
1:00 am |
2:00 am |
3:00 am |
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next day |
next day |
next day |
next day |
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Daylight |
5:00 am |
Midnight |
1:00 am |
2:00 am |
3:00 am |
4:00 am |
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Saving Time |
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next day |
next day |
next day |
next day |
next day |
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HKG, BJS, TPE, |
Standard Time |
Midnight |
1:00 am |
2:00 am |
3:00 am |
4:00 am |
5:00 am |
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SEL, TYO |
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HNL, ANC, YVR, |
Standard Time |
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LAX,YEA, DEN, |
Daylight |
Midnight |
1:00 am |
2:00 am |
3:00 am |
4:00 am |
5:00 am |
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MEX,YWG, CHI, |
Saving Time |
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MIA,YTO, NYC, |
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YHZ, YYT |
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Note
•When a calibration time is reached, the watch will receive the calibration signal only if it is in either the Timekeeping Mode or World Time Mode. Reception is not performed if a calibration time is reached while you are configuring settings.
•Auto receive of the calibration signal is designed to be performed early in the morning, while you sleep (provided that the Timekeeping Mode time is set correctly). Before going to bed for the night, remove the watch from your wrist, and put it in a location where it can receive the signal easily.
•The watch receives the calibration signal for two to 14 minutes everyday when the time in the Timekeeping Mode reaches each of the calibration times. Avoid performing any button operation within 14 minutes before or after any one of the calibration times. Doing so can interfere with correct calibration.
•Remember that reception of the calibration signal depends on the current time in the Timekeeping Mode. The receive operation will be performed whenever the display shows any one of the calibration times, regardless of whether or not the displayed time actually is the correct time.
•Calibration signal reception is disabled while a countdown timer operation is in progress.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For best reception, be sure to keep the watch in a location where signal strength is strongest.
Receiving indicator
Weak |
Strong |
(Level 0) |
(Level 3) |
•Use the receiving indicator as a guide for checking signal strength and for finding the best location for the watch during signal receive operations.
•Even in an area where signal strength is strong, it takes about 10 seconds for signal reception to stabilize enough for the receiving indicator to indicate signal strength.
To perform manual receive
Receiving 1. Enter the Timekeeping Mode.
2. Place the watch on a stable surface so its 12 o’clock side is facing towards a window.
3.Hold down D for about two seconds until the receiving indicator appears on the display.
• Time calibration signal reception takes from two to 14 minutes. Take care that you do not perform any button operations or move the watch during this time.
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• If the receive operation is successful, the reception date |
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Receive successful |
and time appear on the display, along with the GET |
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indicator. |
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The watch will enter the Timekeeping Mode if you press |
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D or if you do not perform any button operation for |
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about one or two minutes. |
Receive date
Receive time
• If the current reception fails, the display shows the ERR indicator.
The watch will enter the Timekeeping Mode without changing the time setting if you press Dor if you do not perform any button operation for about one or two minutes.
To turn auto receive on and off
1. In the Timekeeping Mode, press Dto display the Last Signal screen.
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2. Hold down Auntil the current auto receive setting (ON |
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or OFF) start to flash. This is the setting screen. |
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• Note that the setting screen will not appear if the |
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currently selected Home City is one that does not |
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support time calibration reception. |
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3. Press Dto toggle auto receive on (ON) and off (OFF). |
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4. Press A to exit the setting screen.
•For information about city codes that support signal receive, see “To specify your Home City”.
To check the latest signal reception results
In the Timekeeping Mode, press Dto display the Last Signal screen.
•When receive is successful, the display shows the time and date that receive was successful. - - : - - indicates that none of the reception operations were successful.
•To return to the Timekeeping Mode, press D.
Receive time
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem |
Probable Cause |
What you should do |
Cannot perform |
• The watch is not in the Timekeeping Mode. |
• Enter the Timekeeping Mode |
manual receive. |
• Your current Home City is not one of the |
and try again. |
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following: |
• Select LIS, LON, MAD, PAR, |
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LIS, LON, MAD, PAR, ROM, BER, STO, |
ROM, BER, STO, ATH, MOW, |
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ATH, MOW, HKG, BJS, TPE, SEL, TYO, |
HKG, BJS, TPE, SEL, TYO, |
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HNL, ANC, YVR, LAX, YEA, DEN, MEX, |
HNL, ANC,YVR, LAX, YEA, |
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YWG, CHI, MIA, YTO, NYC, YHZ, or |
DEN, MEX, YWG, CHI, MIA, |
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YYT |
YTO, NYC, YHZ, or YYT as |
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your Home City. |
Time setting is |
• If the time is one hour off, the DST |
• Change the DST setting to |
incorrect |
setting may be incorrect. |
Auto DST. |
following signal |
• The Home City code setting is not |
• Select the correct Home City |
reception. |
correct for the area where you are using |
code. |
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the watch. |
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• For further information, see “Important!” under “Time Calibration Signal Reception” and “Radio-controlled Atomic Timekeeping Precautions”.
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