Operation Guide 3140
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.
•This watch does not have a time zone that corresponds to the UTC offset of
Caution!
Your watch is shipped with its Auto Display feature (which continually changes the contents of the digital display) turned on. Calibration signal reception is disabled while Auto Display is turned on.
Press any button to turn off Auto Display and return to the Timekeeping Mode.
About This Manual
•Button operations are indicated using the letters shown in the illustration.
• Each section of this manual provides you with the information you need in order to perform operations in each mode. Further details and technical information can be found in the “Reference” section.
General Guide
•Press C to change from mode to mode.
•In any mode (except when a setting screen is on the display), press B to illuminate the display.
Timekeeping Mode | World Time Mode | Countdown | Stopwatch Mode | Alarm Mode |
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| Timer Mode |
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Radio-controlled Atomic Timekeeping
Month – Day |
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| This watch receives a time calibration signal and updates | ||||
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| its time setting accordingly. | |||||
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| Day of week | ||||||||
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| • Supported time calibration signals: United States (Fort | ||||||||
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| Year | Collins), England (Anthorn). | |||||
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| • See the information under “Signal Reception | |
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| Troubleshooting” if you experience problems with time | |
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| calibration signal reception. | |
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| Current Time Setting | |
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| This watch adjusts its time setting automatically in | |
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| accordance with a time calibration signal. You can also | |
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| perform a manual procedure to set the time and date, | |
PM indicator |
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| DST | when necessary. | ||||||
Home Time |
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| indicator | • The first thing you should do after purchasing this | ||||||
(Hour : Minutes Seconds) | watch is to specify your Home City (the city where you | |||||||||
normally will use the watch). For more information, | ||||||||||
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| 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.
To specify your Home City
| City code |
| 1. In the Timekeeping Mode, hold down A until the city | |||||
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| code starts to flash, which indicates the setting screen. | ||||||
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| 2. Press D(east) and B(west) to select the city code you | ||||
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| want to use 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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| U.S. Signal |
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| U.K. Signal |
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City | City | City | City | City | City | City | City | |
Code | Name | Code | Name | Code | Name | Code | Name | |
HNL | Honolulu | YWG | Winnipeg | LIS | Lisbon | ATH | Athens | |
ANC | Anchorage | CHI | Chicago | LON | London | MOW | Moscow | |
YVR | Vancouver | MIA | Miami | MAD | Madrid |
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LAX | Los Angeles | YTO | Toronto | PAR | Paris |
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YEA | Edmonton | NYC | New York | ROM | Rome |
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DEN | Denver | YHZ | Halifax | BER | Berlin |
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MEX | Mexico City | YYT | St. Johns | STO | Stockholm |
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3. Press A twice to 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: HNL (Honolulu), ANC (Anchorage), ATH (Athens), and MOW (Moscow). 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”.
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