MA0804-EA
Operation Guide 5028
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 and keep it on hand for later reference when necessary.
Warning!
•The longitude, lunitidal interval, Moon phase indicator and tide graph data that appear on the display of this watch are not intended for navigation purposes. Always use proper instruments and resources to obtain data for navigation purposes.
•This watch is not an instrument for calculating low tide and high tide times. The tide graph of this watch is intended to provide a reasonable approximation of tidal movements only.
•CASIO COMPUTER CO., LTD. assumes no responsibility for any loss, or any claims by third parties that may arise through the use of this watch.
About This Manual
•Button operations are indicated using the letters shown in the illustration.
•For the sake of simplicity, the sample displays in this
manual do not show the analog hands of the watch.
• 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.
General Guide
•Press Cto change from mode to mode.
•In any mode (except when a setting screen is on the display), press B to illuminate the face of the watch.
Timekeeping | Moon/Tide Data | Stopwatch |
Mode | Mode | Mode |
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Countdown Timer | Alarm |
| Dual Time |
| Hand Setting | |
Mode | Mode |
| Mode |
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Timekeeping
Digital Time Daylight Saving Time (DST) Setting
| Tide graph | |||
Day of |
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week |
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Hour : Minutes
Seconds
Month – Day
PM indicator
This watch features separate digital and analog timekeeping. The procedures for setting the digital time and analog time are different.
•The Moon phase indicator shows the current Moon phase in accordance with the current date as kept in the Timekeeping Mode.
•The tide graph shows tidal movements for the current date in accordance with the current time as kept in the Timekeeping Mode.
Important!
•Be sure to configure the current time and date, and your Home Site data (data for the site where you use the watch) correctly before using the functions of this watch. See “Home Site Data” for more information.
Daylight Saving Time (summer time) advances the digital time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.
To toggle the Timekeeping Mode digital time between DST and Standard Time
DST indicator | 1. In the Timekeeping Mode, hold down Auntil the seconds | ||
start to flash, which indicates the setting screen. | |||
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| 2. Press C once to display the DST setting screen. |
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| 3. Press D to toggle between Daylight Saving Time (ON |
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| displayed) and Standard Time (OF displayed). |
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| 4. Press Atwice to exit the setting screen. |
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| • The DST indicator appears on the Timekeeping, Moon/ |
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| Tide Data, Alarm, and Hand Setting Mode screens to |
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| indicate that Daylight Saving Time is turned on. In the |
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| case of the Moon/Tide Data Mode, the DST indicator |
On/Off status | appears on the tide data screen only. | ||
Home Site Data
Digital Time and Date
Use the Timekeeping Mode to set and view a digital display of the current time and date. When setting the digital time, you can also configure settings for summer time (Daylight Saving Time or DST).
To set the digital time and date
1. In the Timekeeping Mode, hold down Auntil the seconds start to flash, which indicates the setting screen.
2. Press Cto move the flashing in the sequence shown below to select the other settings.
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| Day |
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3.When the setting you want to change is flashing, use Band Dto change it as described below.
Screen | To do this: | Do this: |
36 | Reset the seconds to 00 | Press D. |
| Toggle between Daylight Saving Time (ON) and | Press D. |
| Standard Time (OF) |
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P10:08 | Change the hour or minutes | Use D(+) and |
2008 | Change the year |
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Change the month or day |
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4. Press A twice to exit the setting screen.
•The first press of Adisplays the UTC differential setting screen. Pressing A again exits the setting screen.
•Resetting the seconds only (without changing the DST, hour, or minute setting) causes the analog minute hand setting to be adjusted automatically.
•See “Digital Time Daylight Saving Time (DST) Setting” below for details about the DST setting.
•The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.
Moon phase, tide graph data, and Moon/Tide Data Mode data will not be displayed properly unless Home Site data (UTC differential, longitude, and lunitidal interval) is configured correctly.
•The UTC differential is a value that indicates the time difference between a reference point in Greenwich, England and the time zone where a city is located.
•The letters “UTC” is the abbreviation for “Coordinated Universal Time”, which is the
•The lunitidal interval is the time elapsing between the Moon’s transit over a meridian and the next high tide at that meridian. See “Lunitidal Interval” for more information.
•This watch displays lunitidal intervals in terms of hours and minutes.
•The “Site/Lunitidal Interval Data List” at the back of this manual provides UTC differential and longitude information around the world.
•The following is the initial factory default Home Site data (Tokyo, Japan) when you first purchase the watch, and whenever you have the batteries replaced. Change these settings to match the area where you normally use the watch.
UTC differential (+9.0); Longitude (East 140 degrees); Lunitidal interval (5 hours, 20 minutes)
To configure Home Site data
1.In the Timekeeping Mode, hold down A until the seconds start to flash, which indicates the setting
screen.
2. Press Aagain to display the UTC differential setting screen.
3. Press C to move the flashing in the sequence shown below to select other settings.
UTC differential | UTC | Longitude | East Longitude/ | |
Differential | Value |
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| Lunitidal Interval | Lunitidal Interval | ||
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1