Casio 3088 User Manual

Operation guide 3088

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Operation Guide 3088

1

MO0711-EB

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.

Warning!

• The measurement functions built into this watch are not intended for use in taking

measurements that require professional or industrial precision. Values produced
by this watch should be considered as reasonably accurate representations only.

• 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.

• 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 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.

Stopwatch Mode

World Time Mode

Tide/Moon Data Mode

Countdown Timer

Mode

Alarm Mode

Press C.

Timekeeping Mode

Timekeeping

Use the Timekeeping Mode to set and view the current
time and date.

• The tide graph shows tidal movements for the current

date in accordance with the current time as kept in the
Timekeeping Mode.

• The Moon phase indicator shows the current Moon

phase in accordance with the current date 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.

Day of week

Month – Day

Tide graph

Moon phase
indicator

Hour : Minutes Seconds

PM indicator

Setting the Time and Date

This watch is preset with UTC differential values that represent each time zone
around the globe. Before setting the time, be sure to set the UTC differential for your
Home Site first, which is the location where you normally will be using the watch.

• Note that World Time Mode times are all displayed based on the time and date

settings you configure in the Timekeeping Mode.

To set the time and date

1. In the Timekeeping Mode, hold down A until the

seconds start to flash, which indicates the setting
screen.

• Be sure to configure the correct UTC differential for

your Home Site before configuring any other
Timekeeping Mode settings.

• See the “UTC Differential/City Code List” for

information about the UTC differential settings that are
supported.

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Seconds

2. Press C to move the flashing in the sequence shown below to select other

settings.

Hour

UTC

Differential

Minutes

Year

DST

Day

Month

Seconds

Flash Alert

3. When the setting you want to change is flashing, use D and B to change it as

described below.

Reset the seconds to

00

Toggle between Daylight Saving
Time (

ON

) and Standard Time

(

OFF

)

Press D.

Press D.

Screen:

To do this:

Do this:

• See “Daylight Saving Time (DST) Setting” below for details about the DST setting.

• The UTC differential setting range is –12.0 to +14.0, in 0.5-hour units.

• When DST is turned on, the UTC differential setting range is –11.0 to +15.0, in

0.5-hour units.

• For information about Flash Alert, see “Flash Alert”.

4. Press A twice to exit the setting screen.

• The day of the week is displayed automatically in accordance with the date (year,

month, and day) settings.

Specify the UTC differential

Change the hour or minutes

Change the year, month or day

Use D (+) and B (–).

Use D (+) and B (–).

Use D (+) and B (–).

To toggle between 12-hour and 24-hour timekeeping

In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and 24-
hour timekeeping.

• With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for

times in the range of noon to 11:59 p.m. and no indicator appears to the left of the
hour digits for times in the range of midnight to 11:59 a.m.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without

any indicator.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is

applied in all other modes.

Daylight Saving Time (DST) Setting

Daylight Saving Time (summer time) advances the 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 time between DST and Standard Time

1.In the Timekeeping Mode, hold down A until the

seconds start to flash, which indicates the setting
screen.

2. Press C once and the DST setting screen appears.
3. Press D to toggle between Daylight Saving Time (

ON

displayed) and Standard Time (

OFF

displayed).

4. Press A twice to exit the setting screen.

• The DST indicator appears on the Timekeeping, Tide/

Moon Data, and Alarm Mode screens to indicate that
Daylight Saving Time is turned on. In the case of the
Tide/Moon Data Mode, the DST indicator appears on
the Tide Data screen only.

Home Site Data

Moon phase, tide graph data, and Tide/Moon Data Mode data will not be displayed
properly unless Home Site data (UTC differential, longitude and lunitidal interval) is
configured correctly.

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DST indicator

On/Off status

• The UTC differential indicates the time differential with Greenwich, England.

• The letters UTC is the abbreviation for Coordinated Universal Time, which is the

world-wide scientific standard of timekeeping. It is based upon carefully maintained
atomic (cesium) clocks that keep time accurately to within microseconds. Leap
seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s
rotation.

• 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” 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 battery 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 C twice to display the UTC differential setting

screen, and confirm that the setting is correct.

• If the UTC differential setting is not correct, use D (+)

and B (–) to change it.

3. Press A to display the longitude value setting screen.
4. Press C to move the flashing in the sequence shown

below to select other settings.

Lunitidal Interval

Hours

Lunitidal Interval

Minutes

Longitude

(East/West)

Longitude

Value

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Longitude value

Longitude (East/West)

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