Operation Guide 2608 2638 2688
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to carefully read this manual and keep it on hand for later reference when necessary.
•This watch does not have a time zone that corresponds to the Greenwich Mean Time differential of
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright light.
•Be sure to read “Battery” of this manual for important information you need to know when exposing the watch to bright light.
If the display of the watch is blank...
If the sleep indicator (S /SLEEP ) is on the display, it
Sleep indicator | means that the display is blank because the watch’s |
| Power Saving function has shut it to conserve power. |
| Power Saving automatically turns off the display and |
| enters a sleep state whenever your watch is left in an |
| area where it is dark for a certain period. |
•The initial factory default setting is Power Saving on.
• The watch recovers from the sleep state if you move it to a
*It can take up to two seconds for the display to turn on.
•See “Power Saving Function” for more information.
General Guide
•Press Cto change from mode to mode.
•In any mode, press Lto illuminate the display.
World Time Mode
Timekeeping Mode
Press C.
▲
▲
Radio-controlled Atomic Timekeeping
PM |
| This watch receives a time calibration signal and updates |
Day of week | its time setting accordingly. The time calibration signal | |
indicator | includes both Standard Time and Daylight Saving Time | |
|
| (summer time) data. |
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| • This watch is designed to pick up the time calibration |
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| signal transmitted from Fort Collins, Colorado (USA). |
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| Reception is possible within North America*. |
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| * The term “North America” in this User’s Guide refers to the |
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| area that consists of Canada, the continental United States, |
|
| and Mexico. |
Month – Day
Hour : Minutes Seconds
Current Time Setting
This watch automatically adjusts its time setting 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 set your Home City, which is the city where you will normally use the watch. For more information, see “To set your Home City” below.
•When using the watch outside of the range of the transmitter in Fort Collins, you need to manually adjust the time as required. See “Timekeeping” for information about manual settings.
About This Manual
•The operational procedures for Modules 2608, 2638 and 2688 are identical. All of the illustrations in this manual show Module 2608.
•Button operations are indicated using the letters shown in the illustration.
•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.
(Light) | (Light) | (Light) |
Module 2608 | Module 2638 | Module 2688 |
Time Recorder Mode
▲
Stopwatch Mode | ▲ | |
Alarm Mode | ||
| ||
| ▲ |
•Auto Receive
With auto receive, the watch automatically picks up the time calibration signal four times a day at 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m. 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!
•When getting ready to receive the time calibration signal, position the watch as shown in the nearby illustration, with its 12 o’clock side facing towards a window. Make sure there are no metal objects nearby.
Resin Band Metal Band
• | The watch should not be on its side or facing the wrong way. |
• | Proper signal reception can be difficult or even impossible under the conditions |
To set your Home City
City code
E/C/M/P indicator
1.In the Timekeeping Mode, hold down A until the city code starts to flash, which indicates the setting screen.
2.Use D(east) and B(west) to select the city code you want to use as your Home City.
•The following are the city codes for major cities in North America.
LAX(P (Pacific) indicator):
Los Angeles, San Francisco, Las Vegas, Seattle, Vancouver, Tijuana
DEN(M (Mountain) indicator):
Denver, El Paso, Edmonton, Culiacan CHI(C (Central) indicator):
Chicago, Houston, Dallas/Fort Worth, New Orleans, Winnipeg, Mexico City
NYC(E (Eastern) indicator):
New York, Detroit, Miami, Boston, Montreal
•Note that this watch does not have a city code that corresponds to Newfoundland.
3.Press Atwice to exit the setting screen.
•The first press of Adisplays the
listed below. |
Inside or | Inside a | Near | Near a | Near high- | Among or |
among | vehicle | household | construction | tension | behind |
buildings |
| appliances or | site, airport, or | power lines | mountains |
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| office | other sources |
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| equipment, | of electrical |
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| or a mobile | noise |
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| phone |
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•Signal reception is normally better at night than during the day.
•Time calibration signal reception takes from two to six minutes, but in some cases it can take as long as 12 minutes. Take care that you do not perform any button operations or move the watch during this time.
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.
•If you are in an area that does not use Daylight Saving Time (summer time), 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.
600 miles | 2,000 miles |
|
Fort Collins
•Under good reception conditions, signal reception is possible within a radius of about 2,000 miles (3,000 kilometers) from the Fort Collins transmitter.
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