G-Shock GL-7500-2AV User Manual
MO0501-EA
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Operation Guide 2941
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.
• 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.
General Guide
• Press D to change from mode to mode.
• In any mode, press L to illuminate the display.
Timekeeping Mode
Warning!
Press D.
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.
(Light)
Tide/Moon Data Mode World Time Mode
▲
Stopwatch Mode
▲
Alarm Mode
▲
Countdown Timer
Mode
▲
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. You can also
use the Timekeeping Mode to select either audible beeper or vibration alert for alarms.
• 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.
• In the Timekeeping Mode, you can press C to change the display format as shown
below.
Moon phase
indicator
Important!
• Moon phase, tide graph data, and Tide/Moon Data Mode data will not be displayed
properly unless the Timekeeping Mode current date and time settings and Home
Site data are configured correctly. See “Home Site Data” for more information.
To set the time and date
3. When the setting you want to change is flashing, use E and B to change it as
described below.
To change this setting
Seconds
DST
Hour, Minutes, Year,
Month, Day
4. Press A twice to exit the setting screen.
• The first press of A displays the GMT differential setting screen. Pressing A again
exits the setting screen.
• See “Daylight Saving Time (DST)” for details about the DST setting.
• For information about specifying how long the display of the watch remains
illuminated, see “To specify the illumination duration”.
• The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
Daylight Saving Time (DST)
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 digital time between DST and Standard Time
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DST indicator
Day of the Week
PM indicator
Hour : Minutes Seconds
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Day of week
Month – Day
Press C.
▲
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press D to move the flashing in the sequence shown
below to select other settings.
Day Month Year
Perform this button operation
Press E to reset to 00.
Press E to toggle between Standard Time (
and Daylight Saving Time (ON).
Use E (+) and B (–) to change the setting.
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press D once and the DST setting screen appears.
3. Press E to toggle between Daylight Saving Time (
displayed) and Standard Time (
4. Press A twice to exit the setting screen.
• The DST indicator appears on the display to indicate
that Daylight Saving Time is turned on.
▲
Tide Graph
Tide graph
HourDSTSeconds
OFF
Minutes
OFF)
displayed).
ON
▲
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press B to toggle between 12-hour timekeeping and 24-
hour timekeeping.
• With the 12-hour format, the P (PM) indicator appears on the display for times in the
range of noon to 11:59 p.m. and no indicator appears 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 modes.
Home Site Data
Tide graph data will not be displayed properly unless Home Site data (GMT
differential, longitude, and lunitidal interval) is configured correctly.
• The GMT differential is the time difference of the time zone where the site is located
from Greenwich Mean Time.
• 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 GMT differential, longitude, and
lunitidal interval 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.
GMT differential (+9.0); Longitude (East 140 degrees); Lunitidal interval (5 hours,
20 minutes)
To configure Home Site data
GMT differential
4. When the setting you want to change is flashing, use E and B to change it as
described below.
Setting
GMT Differential
Longitude
Lunitidal Interval
Hours, Minutes
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press A again to display the GMT differential setting
screen.
3. Press D to move the flashing in the sequence shown
below to select other settings.
GMT
Differential
Longitude
Screen Button Operations
Use E (+) and B (–) to change the setting.
• You can specify a value in the range of –11.0
to +14.0, in 0.5-hour units.
Use E (+) and B (–) to change the setting.
• You can specify a value in the range of
179°W to 180°E, in 1-degree units.
Use E (+) and B (–) to change the setting.
▲
Lunitidal Interval
Hours
Lunitidal Interval
Minutes
5. Press A to exit the setting screen.
Vibration Alert
When Vibration Alert is turned on, the watch vibrates instead of sounding a beeper.
This lets you use the watch without disturbing others with beeping sounds.
• Vibration Alert can be used to replace alarm sounds.
• For information about selecting the alert type, see “To switch between vibration alert
and beeper alert” below.
• For information about countdown timer alerts, see “Countdown Timer”.
• For information about the daily alarm and hourly time signal alerts, see “Alarms”.
• Watches with a metal band may produce a noise when a vibration operation is
performed. This is due to vibration of the metal band, and does not indicate
malfunction of the watch.
1
Operation Guide 2941
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To switch between vibration alert and beeper alert
Vibration alert on
indicator
In the Timekeeping Mode, hold down E for about two
seconds to toggle between vibration alert (the vibration
alert on indicator displayed in all modes) and beeper alert
(the vibration alert on indicator not displayed).
Tide/Moon Data
Tide graph
Month–Day
Moon Phase Indicator
To view the Moon data for a particular date
In the Tide/Moon Data Mode, use E (+) and B (–) to display the date whose Moon
data you want to view.
• You can select any date from 2000 to 2039.
• You can also specify a date for tide data or Moon data. For details, see “To specify a
date”.
To view tide data for a particular time
1. In the Tide/Moon Data Mode, use E (+) and B (–) to display the date whose tide
data you want to view.
• The initial screen shows the tide graph for 6:00 AM.
2. Specify the time for which you want to display tide data.
• Use C (+) to change the time in one-hour steps.
To specify a date
Month–Day
Year
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Tide/Moon data lets you view the Moon phase for a
particular date, and tidal movements for a particular date
and time for the Home Site.
• When you enter the Tide/Moon Data Mode, the data for
6:00 a.m. on the current date appears first.
• If you suspect that the Tide/Moon data is not correct for
some reason, check the Timekeeping Mode data
(current time, date, and Home Site settings), and make
changes as required.
• See “Moon Phase Indicator” for information about the
Time
Moon phase indicator and “Tide Graph” for information
about the tide graph.
• All of the operations in this section are performed in the
Tide/Moon Data Mode, which you enter by pressing D.
1. In the Tide/Moon Data Mode, hold down A until the
month setting starts to flash, which indicates the setting
screen.
2. Press D to move the flashing in the sequence shown
below to select the other settings.
Day YearMonth
3. While a setting is flashing, use E (+) or B (–) to
change it.
• You can specify a date in the range of January 1,
2000 to December 31, 2039.
4. Press A to exit the setting screen.
World Time
Timekeeping Mode time
City code
]WT
Current time in
selected city
To view the time in another city
While in the World Time Mode, press E to scroll through the city codes (time zones)
eastwardly or B to scroll westwardly.
• For full information on city codes, see the “City Code Table”.
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator
To set the current time in the World Time Mode
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4. When the setting you want to change is flashing, use E (+) and B (–) to change it.
• When setting the world time using the 12-hour format, take care to set the time
correctly as a.m. (no indicator) or p.m. (P indicator).
5. Press A to exit the setting screen.
• Note that you cannot make settings for individual city codes. Daylight Saving Time
(summer time) advances the time setting of all the World Time Mode cities by one
hour from Standard Time. Remember that not all countries or even local areas use
Daylight Saving Time.
The World Time Mode shows you the current time in 28
cities (29 time zones) around the world.
• The time settings of the Timekeeping Mode and the
World Time Mode are independent from each other, so
you must make separate settings for each.
• Whenever you change the time setting for any city in the
World Time Mode, the settings of all other cities are
changed accordingly.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing D.
1. In the World Time Mode, use B and E to display the
city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.
2. Hold down C to toggle Daylight Saving Time (DST
indicator displayed) and Standard Time (DST indicator
not displayed).
• Note that you cannot switch between Standard Time
and Daylight Saving Time while
city code.
• The DST indicator will appear whenever you display a
city code for which Daylight Saving Time is turned on.
• Note that the DST/Standard Time setting affects only the
currently displayed city code. Other city codes are not
affected.
1. In the World Time Mode, use E and B to select the
city code whose time you want to set.
2. After you select a city code, hold down A until the hour
setting of the World time starts to flash, which indicates
the setting screen.
3. Use D to move the flashing between the hour and
minute settings.
GMT is selected as the
Countdown Timer
Timekeeping Mode time
Minutes Seconds
Configuring Countdown Timer Settings
The following are the settings you should configure before actually using the
countdown timer.
Countdown start time and reset time
Timer mode (auto-repeat, elapsed time)
• See “To configure countdown timer settings” for information about setting up the
timer.
Reset Time
You can set a “reset time,” which is a kind of alternate countdown start time. After you
set a reset time, you can recall with the press of a button any time a countdown
operation is in progress.
Timer Mode
The countdown timer gives you a choice of two modes: auto-repeat and elapsed time.
Auto-repeat
Auto-repeat automatically restarts the countdown from the countdown start time
whenever zero is reached.
• Auto-repeat mode is best when timing the starts of match races.
• Even if you start a countdown operation from the reset time, the countdown
automatically restarts from the countdown start time whenever it reaches zero.
• Auto repeat timing repeats up to seven times.
Elapsed Time
When the end of the countdown is reached in the elapsed time mode, the timer
automatically switches to an elapsed time measurement operation.
• The elapsed time mode is best when timing the speed of yachts during ocean races.
• The elapsed time operation is performed in one-second increments up to 99 hours,
59 minutes, 59 seconds.
Countdown Timer Alert Operations
While a countdown is in progress, the watch performs various different alert
operations, so you can keep informed of the countdown status, without looking at the
watch display. The following explains each of the countdown timer alert operations.
Countdown End Alert
The following countdown alert operations are performed for each of the final ten
seconds of the countdown, and when the countdown reaches zero.
Countdown
Final seconds 10 through 6 (5 times)
Final seconds 5 through 1 (5 times)
When the countdown reaches zero
• Except in the Stopwatch Mode, all buttons are disabled while a countdown end alert
operation is being performed.
Progress Alert
There are two types of progress alert: a reset time alert and a reset period progress
alert.
Reset Time Aler t
The reset time alert is similar to the alert operations performed for each of the final 10
seconds of a countdown. For the reset time alert, the watch performs an alert
operation for each of the final 10 seconds before the reset time is reached.
• Except in the Stopwatch Mode, all buttons are disabled while a reset time alert is
being performed.
Reset Period Progress Alert
The reset period is the portion of the countdown between the reset time and zero.
During the reset period, the watch performs an alert operation at the top of each
minute, and at the point 30 seconds before the end of the countdown is reached. Each
reset period progress alert operation consists of four short beeps or two vibrations,
depending on the type of alert that is selected.
Countdown Timer Examples
Countdown start time: 10 minutes; Reset time: 5 minutes; Timer mode: Auto-repeat
Start Time Reset Time
10'00"
Reset Time Alert
Countdown start time: 10 minutes; Reset time: 5 minutes; Timer mode: Elapsed time
Start Time Reset Time
10'00"
Reset Time Alert
To configure countdown timer settings
Auto–repeat indicator
The countdown timer can be set within a range of one
minute to 60 minutes. The currently selected alert
operation (beeper or vibration) is performed when the end
of the countdown is reached. The countdown timer has
two modes: auto-repeat and elapsed time. A progress
alert (beeper or vibration) signals the progress of the
countdown. All of this makes the countdown timer a
valuable tool for timing the start of a yacht race.
• You can select either beeper alert or vibration alert for
the alarm. The explanations in this section are based on
the beeper alert, unless stated otherwise.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
D.
Beep
High pitch
Lower pitch
Longer beep
Reset Period
Reset Period Progress Alert
Reset Period
Reset Period Progress Alert
5'00"
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down A until the
countdown start time setting starts to flash, which
indicates the setting screen.
• If the countdown start time is not displayed, use the
procedure under “To use the countdown timer” to
display it.
2. Press D to move the flashing in the sequence shown
below to select other settings.
Start
Time
Reset
Time
1'00" 0'30"2'00"3'00"4'00"
Timer
Mode
Vibration
2 each
1 each
Longer vibration
Countdown
End Alert
0'00"1'00" 0'30"2'00"3'00"4'00"5'00"
Elapsed time
measurement
0'00"
Countdown
End Alert
2
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