Casio AQW1001AV User Manual
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.
• 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.
Warning!
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 C to 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
Mode
Press .
Moon/Tide Data
Mode
Stopwatch
Mode
Timekeeping
Tide graph
Moon phase
Day of
indicator
week
Hour : Minutes
Seconds
PM indicator
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).
Month – Day
To set the digital time and date
Seconds DST Hour Minutes
3. When the setting you want to change is flashing, use B and D to change it as
described below.
Screen
To do this:
36
Reset the seconds to
Toggle between Daylight Saving Time (ON) and
2008
6-30
Standard Time (OF)
Change the hour or minutes
Change the year
Change the month or day
P
10:08
4. Press A twice to exit the setting screen.
• The first press of A displays 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.
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.
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press C to move the flashing in the sequence shown
below to select the other settings.
Day Month Year
00
Do this:
Press D.
Press D.
Use D (+) and B (–).
Countdown Timer
Mode
Digital Time Daylight Saving Time (DST) Setting
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
On/Off status
Home Site Data
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
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” 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
UTC differential
Alarm
Mode
1. In the Timekeeping Mode, hold down A until the seconds
start to flash, which indicates the setting screen.
2. Press C once to display the DST setting screen.
3. Press D to toggle between Daylight Saving Time (
displayed) and Standard Time (OF displayed).
4. Press A twice to exit the setting screen.
• The DST indicator appears on the Timekeeping, Moon/
Tide Data, Alarm, and Hand Setting Mode screens to
indicate that Daylight Saving Time is turned on. In the
case of the Moon/Tide Data Mode, the DST indicator
appears on the tide data screen only.
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 UTC differential setting
screen.
3. Press C to move the flashing in the sequence shown
below to select other settings.
UTC
Differential
Dual Time
Longitude
Lunitidal Interval
Minutes
Mode
Value
Hand Setting
Mode
East Longitude/
West Longitude
Lunitidal Interval
Hours
ON
1
Operation Guide 5028
y
4. When the setting you want to change is flashing, use D and B to change it as
described below.
UTC Differential
Longitude Value
East Longitude/
West Longitude
Lunitidal Interval
Hours, Minutes
• When the digital time DST setting is on, the UTC differential can be set in a range
of –11.0 to +15.0 in 0.5-hour units.
5. Press A to exit the setting screen.
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 the A (AM) 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.
• The A and P indicators are not displayed with the Timekeeping Mode time on the
Countdown Timer Mode and Dual Time Mode screens.
Setting the Analog Time
Perform the procedure below when the time indicated by the analog hands does not
match the time of the digital display.
To adjust the analog time
• If you need to advance the analog time setting a long way, hold down D until the
time starts advancing at high speed, and then press B. This locks the highspeed hand movement, so you can release the two buttons. High-speed hand
movement continues until you press any button. It will also stop automatically
after the time advances 12 hours or if an alarm (multi-function alarm, Hourly Time
Signal, or countdown beeper) starts to sound.
4. Press A to exit the setting mode.
• The watch will automatically adjust the minute hand slightly to match its internal
second count when you exit the setting mode.
• To return to the Timekeeping Mode, press C.
ScreenSetting
Use D (+) and B (–) to change the setting.
• You can specify a value in the range of –12.0 to +14.0,
in 0.5-hour units.
Use D (+) and B (–) to change the setting.
• You can specify a value in the range of 0° to 180°, in
1-degree units.
Use D to switch between east longitude (E) and west
longitude ( ).
Use D (+) and B (–) to change the setting.
1. In the Timekeeping Mode, press C six times to enter
the Hand Setting Mode.
2. Hold down A until the current digital time starts to
flash, which indicates the analog setting mode.
3. Press D to advance the analog time setting by
20 seconds.
• Holding down D advances the analog time setting at
high speed.
Button Operations
Moon/Tide Data
Moon phase indicator
Tide graph
Time
Year Month – Da
Tide Data Screen
To view the current Moon/Tide Data Mode data
In the Moon/Tide Data Mode, press A to toggle between the tide data screen and the
Moon data screen.
• The tide graph shows the tide for the currently displayed time. The initial tide data
screen shows the level for 6:00 a.m. The Moon data screen shows the Moon age
and Moon phase for the current date.
Tide Data Screen Moon Data Screen
Tide graph
• While the tide data screen is displayed, press D to advance to the next hour.
• While the Moon data screen is displayed, press D to advance to the next day.
• You can also specify a particular date (year, month, day) to view its tide data and
Moon data. See “To specify a date” for more information.
• When you enter the Moon/Tide Data Mode, the screen (tide data or Moon data) that
was displayed the last time you exited the mode appears first.
Time
Moon/tide data lets you view the Moon age and Moon
phase for a particular date, and tidal movements for a
particular date and time at your Home Site.
• If you suspect that the current Moon/tide data is wrong
for some reason, check the current Timekeeping Mode
settings (time, date, and Home Site), and correct them if
required.
• See “Moon Phase Indicator” for information about the
Moon phase indicator and “Tide Graph” for information
about the tide graph.
• All of the operations in this section are performed in the
Moon/Tide Data Mode, which you enter by pressing C.
Year Month – Day Year Month – Day
Moon phase indicator
Press .
Moon age
To specify a date
Month – Day
Year
3. While a setting is flashing, use D (+) or B (–) to change it.
• You can specify a date in the range of January 1, 2000 to December 31, 2099.
4. Press A to exit the setting screen.
5. Use A to display either the tide data screen or the Moon data screen.
1. In the Moon/Tide Data Mode, hold down A until the
year setting starts to flash, which indicates the setting
screen.
2. Press C to move the flashing in the sequence shown
below to select the other settings.
Year
Month Day
Stopwatch
1/100 second
Seconds
Minutes
Hours
To measure times with the stopwatch
Elapsed Time
Start
Split Time
Start
Two Finishes
Start
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 23 hours,
59 minutes, 59.99 seconds.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
• Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to
elapsed time measurement.
• All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C.
Stop Re-start Stop
Split
(SPL displayed)
Split Stop Split release Clear
First runner
finishes.
Display time of
first runner.
Split release Stop Clear
Second runner
finishes.
Display time of
second runner.
Clear
Countdown Timer
Timekeeping Mode time
Seconds
Minutes
Hours
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached and auto-repeat is turned off, the alarm
sounds for 10 seconds or until you stop it by pressing any button. The countdown
time is automatically reset to its starting value after the alarm stops.
• When auto-repeat is turned on, the countdown will restart automatically without
pausing when it reaches zero. The alarm sounds in order to signal when the
countdown reaches zero.
• The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
• Press D while a countdown operation is in progress to pause it. Press D again to
resume the countdown.
• To completely stop a countdown operation, first pause it (by pressing D), and then
press A. This returns the countdown time to its starting value.
To set up the countdown timer
3. While a setting is flashing, use D and B to change it as described below.
Screen
0:00
• To specify a countdown start time of 24 hours, set
4. Press A to exit the setting screen.
• The auto-repeat on indicator (
screen while this function is turned on.
• Frequent use of auto-repeat and the alarm can run down batteries power.
You can set the countdown timer within a range of
one minute to 24 hours. An alarm sounds when the
countdown reaches zero.
• You can also select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• All of the operations is this section are performed in the
Countdown Timer Mode, which you can enter using C.
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down A until the hour
setting of the countdown start time 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 C to move the flashing in the sequence shown
below to select other settings.
Hours
To do this:
Change the hours or minutes
Toggle auto-repeat on (ON) and off (OF)
Minutes
0:00
) is displayed on the Countdown Timer Mode
Auto-repeat
Do this:
Use D (+) and B (–).
Press D.
.
2
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