Casio 2477 User manual

USER’S GUIDE 2477
1
General Guide
•Press Cto change from mode to mode.
•In any mode, press Lto illuminate the display.
Timekeeping Mode World Time Mode Tide Data Mode Alarm Mode Countdown Timer Mode
Press .
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. You can
also select the color of the “Multi Illuminator” backlight, which uses LEDs to
illuminate the display in different colors.
Seconds
Tide graph
Day of week
Hour : Minutes
AM/PM indicator
Month – Day Moon age
Moon phase indicator
Hold down .
•In the Timekeeping Mode, hold down Bto indicate the current Moon age in
accordance with the current date as kept in the Timekeeping Mode.
•The tide graph shows tidal movements for the current time 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!
•Moon phase, tide graph data, Moon age data and World Time Mode times
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.
•Always use standard time when setting the Timekeeping Mode time and
date, even if the area where your Home Site is located is currently in Daylight
Saving Time (summer time). After setting the time, turn DST on or off as
required. See “Daylight Saving Time (DST)” for more information.
To set the 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 other settings.
Hour
DST on/offSeconds MonthYear
Minutes
Minutes
Lunitidal interval
Hour
Backlight color Day
GMT
differential
Longitude
3. When the setting you want to change is flashing, use Dto change it as
described below.
To change this setting
Seconds
Hour, Minutes, Year, Month, Day,
GMT differential, Longitude, Lunitidal
interval (hours, minutes)
DST on/off
Perform this button operation
Press Dto reset to 00.
Use Dto increase the setting.
Press Dto toggle between DST on ( DST
0N
displayed) and off ( DST 0FF displayed).
•Pressing Dwhile the seconds are in the range of 30 to 59 resets them to
00 and adds 1 to the minutes. In the range of 00 to 29, the minutes are
unchanged.
•See “Daylight Saving Time (DST)” on page for information about turning
Daylight Saving Time on and off.
•See “Home Site Data” on page for information about setting the GMT
differential, longitude, and lunitidal interval (hours, minutes).
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 time between DST and Standard Time
1.In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2.Press Cto move the flashing to the DST On/Off
setting.
3.Press Dto toggle between Daylight Saving Time
( DST 0N displayed) and standard time ( DST
OFF displayed).
4.Press Ato exit the setting screen.
•The DST indicator appears on the display to
indicate that Daylight Saving Time is turned on.
4. Press Ato exit the setting screen.
•The day of the week is automatically displayed in accordance with the date
(year, month, and day) settings.
•The year can be set in the range of 1995 to 2039.
•The watch’s built-in full automatic calendar automatically makes allowances
for different month lengths and leap years. Once you set the date, there
should be no reason to change it except after you have the watch’s battery
replaced.
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping mode, press Dto 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 also applied in all other modes.
DST indicator
Home Site Data
Moon phase, Moon age data, tide graph data, and World Time Mode times 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 the
meridian and the next high tide. See “Lunitidal Interval” for more information.
•This watch displays lunitidal intervals in terms of hours and minutes.
•The “Site Data List” and “Lunitidal Interval List” at the back of this manual
provide GMT differential, longitude, and lunitidal interval information around
the world.
To configure Home Site data
1.In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2.Press Cseven times to display the GMT
differential setting screen, and then use Dto
increase the setting.
3.Press Cto display the longitude setting screen,
and then use Dto increase the setting.
•You can specify longitude in the range of 179°W
to 180°E in 1-degree units.
4.Press Cto display the lunitidal interval setting
screen with the hour setting flashing, and then use
Dto increase the setting.
5.Press Cto move the flashing to the lunitidal
interval minute setting, and then use Dto
increase the setting.
6.Press Ato exit the setting screen.
Press
seven
times.
To change the backlight color
1.In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2.Press C11 times until the backlight color setting
screen appears, and then use Dto cycle through
the color settings described below.
: Tangerine Yellow
(in all modes)
: Pure Red
(in all modes)
: Forest Green
(in all modes)
: Color depends on mode
Timekeeping Mode: Pure Red (at spring tide),
Tangerine Yellow (at intermediate tide), Forest Green (at neap tide)
World Time Mode: Tangerine Yellow
Alarm Mode: Pure Red
Tide Data Mode and Countdown Timer Mode: Forest Green
• Note that with the 1-3 setting, the color of the backlight in the Timekeeping
Mode is determined by the current tide reading in the Timekeeping Mode.
3. Press Ato exit the setting screen.

USER’S GUIDE 2477
2
World Time
The World Time shows the current time at 44 sites
(27 time zones) around the world.
•Of the 44 sites, 10 are famous surfing points. You
can use the data of the 10 surfing sites as it is, or
you can edit it to suit your needs.
•You can also configure original data for one user
surfing point.
•The Moon phase indicator shows the current Moon
phase for the currently selected time zone, in
accordance with the current date as kept in the
World Time Mode.
•The World Time Mode has its own Daylight Saving
Time (summer time) setting.
•All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
Current time at selected site
Site code
Month – Day
To view the time in another site
In the World Time Mode, press Dto scroll site codes to the east or Bto
scroll to the west.
•A site that is also a surfing point is indicated by above the site code.
•The user site is indicated by above the site code ORG (original).
•For full information on site codes, see the “Site Code Table” at the back of
this manual.
•See the “Preset Location Chart (10 Surfing Sites)” at the back of this manual for
details on the locations whose data is preset in watch memory when you
purchase it.
To switch between Standard Time and Daylight Saving Time
1. In the World Time Mode, hold down Auntil the DST OFF or DST ON
flashes on the display, which indicates the setting screen.
2. Press Dto toggle between Daylight Saving Time ( DST ON displayed) and
standard time ( DST OFF displayed).
3. Press Ato exit the setting screen.
•The DST indicator is on the display whenever you display a site code for
which Daylight Saving Time is turned on.
•Note that the DST/Standard Time setting affects only the currently displayed
site code. Other site codes are not affected.
Editing Surfing Point Data
This watch comes pre-programmed with data for 10
famous surfing points around the world. You can use
the following procedure to change the lunitidal
interval of the surfing points.
•The lunitidal interval is the time elapsing between
the Moon’s transit over the meridian and the next
high tide. See “Lunitidal Interval” for more
information.
•This watch displays lunitidal intervals in terms of
hours and minutes.
To edit surfing point data
1. In the World Time Mode, press Dto scroll site codes to the east or Bto
scroll to the west.
•A site that is also a surfing point is indicated by above the site code.
2. Hold down Auntil the DST OFF or DST ON flashes on the display,
which indicates the setting screen.
3. Press Cto move the flashing in the sequence shown below.
Lunitidal interval (hours) Lunitidal interval (minutes)
DST on/off
4. When the setting you want to change is flashing, use D to change it as described
below.
To change this setting
Lunitidal interval (Hours)
Lunitidal interval (Minutes)
DST on/off
Perform this button operation
Use Dto increase the setting.
Press Dto toggle between DST on ( DST
0N
displayed) and off ( DST 0FF displayed).
3. Press Cto move the flashing in the sequence shown below.
GMT differential Longitude
Lunitidal interval (minutes) Lunitidal interval (hours)
DST on/off
4. When the setting you want to change is flashing, use D to change it as described
below.
To change this setting
Lunitidal interval (Hours)
Lunitidal interval (Minutes)
GMT differential
Longitude
DST on/off
Perform this button operation
Use Dto increase the setting.
Press Dto toggle between DST on ( DST
0N
displayed) and off ( DST 0FF displayed).
•You can specify longitude in the range of 179°W to 180°E in 1-degree
units.
5. Press Ato exit the setting screen.
•The “Site Data List” and “Lunitidal Interval List” at the back of this manual
provide GMT differential, longitude, and lunitidal interval information around
the world.
Tide Data
In the Tide Data Mode, you can view the tide and
Moon phase for particular date and time.
•For more information about Tide Data, see “Tide
graph” on page.
•All of the operations in this section are performed in
the Tide Data Mode, which you enter by pressing
C.
To view tide data for a particular time
In the Tide Data Mode, use D(+) and B(–) to
change the time whose tide you want to view by one
hour.
•Pressing Dwhile the tide for 11:00 p.m. is
displayed advances to midnight (12:00 a.m.), but
the date does not change.
Tide graph
Hour : Minutes
Site code Date
Year
(1 sec. interval)
Moon phase indicator
Specifying the Site and Date You Want to View
In the Tide Data Mode, you can specify a site, year,
month, and day to view the corresponding tide and
Moon phase.
•You can specify your Home Site, one of the 10
preset surfing points, or your user surfing point.
To specify the site and date
1.In the Tide Data Mode, hold down Auntil the site
code starts to flash, which indicates the setting
screen.
2.Press Cto move the flashing in the sequence
shown below.
Site code Month DayYear
3. Use D to increase the setting.
•While the digits of the site code are selected (flashing), press D to scroll site
codes.
4. Press Ato exit the setting screen.
•The year can be set in the range of 1995 to 2039.
•See the “Preset Location Chart (10 Surfing Sites)” at the back of this manual
for details on the locations whose data is preset in watch memory when you
purchase it.
•The site code and date on the display when you exit the Tide Data Mode
appear first the next time you enter the Tide Data Mode.
Site code
Date
Year
Alarm
You can set a Daily Alarm. When the alarm is turned
on, the alarm sounds when the alarm time is
reached.
When the Hourly Time Signal is turned on, the watch
beeps every hour on the hour.
•The Hourly Time Signal also sounds in accordance
with the Home Site which you select in the
Timekeeping Mode.
•Alarm settings (and Hourly Time Signal settings)
are available in the Alarm Mode, which you enter by
pressing C.
Setting the alarm time
You can set the alarm to sound in accordance with
the current Home Site or a site in the World Time
Mode.
•When setting an alarm for a World Time site, first
enter the World Time Mode and select the site for
which you want to set the alarm.
To set the alarm time
1.In the Alarm Mode, hold down Auntil the hour
setting of the alarm time starts to flash, which
indicates the setting screen.
•At this time, the alarm is turned on automatically.
2.Press Cto move the flashing in the sequence
shown below.
Site codeHour Minutes
3.Use Dto increase the setting.
•While the site code is flashing, press Dto toggle
between the Home Site which you selected in the
Timekeeping Mode and the World Time site
which you selected in the World Time Mode.
•When setting the alarm time using the 12-hour
format, take care to set the time correctly as
morning (Adisplayed) or afternoon (Pdisplayed).
4.Press Ato exit the setting screen.
Alarm on indicator
Alarm time
(Hour : Minutes)
Site code
Current time at selected sit
e
Daily Alarm Operation
The alarm sounds at the preset time each day for about 20 seconds, or until
you stop it by pressing any button.
•Changing the Home Site or the World Time site after setting an alarm causes
the site selected in the Alarm Mode to change as well.
To test the alarm
In the Alarm Mode, hold down Dto sound the alarm.
To turn the Daily Alarm and Hourly Time Signal on and off
In the Alarm Mode, press Bto cycle through the on and off settings as shown
below.
Alarm On Indicator/Hourly Time Signal On Indicator
Alarm only
Both OFF
Both ON Hourly Time
Signal only
5. Press Ato exit the setting screen.
Configuring a User Surfing Point
You can configure your own, original surfing point by
inputting its GMT differential, longitude, and lunitidal
interval. The point code for this data is ORG
(original), which cannot be changed.
•The lunitidal interval is the time elapsing between
the Moon’s transit over the meridian and the next
high tide. See “Lunitidal Interval” on page for more
information.
•This watch displays lunitidal intervals in terms of
hours and minutes.
To configure a user surfing point
1. While in the World Time Mode, press B or D to scroll site codes until ORG

USER’S GUIDE 2477
3
Countdown Timer
You can set the countdown timer within a range of 1
to 60 minutes. An alarm sounds when the countdown
reaches zero.
•The initial default countdown start time when you
purchase the watch or after you have its battery
replaced is 15 minutes.
•All of the operations in this section are performed in
the Countdown Timer Mode, which you enter by
pressing C.
To use the countdown timer
Press Dwhile in the Countdown Timer Mode to start
the countdown timer.
•When the end of the countdown is reached, 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.
Seconds
Timekeeping Mode time
(Home site time)
Minutes
•Press Dwhile a countdown operation is in progress to pause it. Press D
again to resume the countdown.
•The watch beeps as the countdown time passes the 5-minute mark.
•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 the countdown start time
1. In the Countdown Timer Mode, hold down Auntil the minute setting of the
countdown start time starts to flash, which indicates the setting screen.
2. Press Dto increase the setting.
3. Press Ato exit the setting screen.
Reference
This section contains more detailed and technical information about watch
operation. It also contains important precautions and notes about the various
features and functions of this watch.
Moon Phase Indicator
The Moon phase indicator of this watch indicates the current phase of the
Moon as shown below.
Graph
Moon age
Moon
Phase
0, 1, 29
New
Moon
2-5 6-9
First
Quarter
(Waxing)
10-13 14-16
Full
Moon
17-20 21-24
Last
Quarter
(Waning)
25-28
•The light part of the Moon phase indicator shows the part of the Moon that is
visible in the sky during each particular phase.
Tide graph Rising Falling
Spring Tide IntermediateTide Neap Tide
High
Middle
Low
•The Moon phase indicator shows the Moon as viewed at noon from a
position in the Northern Hemisphere looking south. Note that at times the
image shown by the Moon phase indicator may differ from that of the actual
Moon in your area.
•The left-right orientation of the Moon phase is reversed when viewing from
the Southern Hemisphere or from a point near the equator.
Moon Phase and Moon Age
The Moon goes through a regular 29.53-day cycle during which it appears to
wax and wane due to how the Sun illuminates the Moon and the relative
positioning of the Earth, Moon, and Sun. The greater the angular distance
between the Moon and the Sun,* the more we see illuminated.
* The angle to the Moon in relation to the direction at
which the Sun is visible from the Earth.
This watch performs a rough calculation of the current Moon age starting from
day 0 of the Moon age cycle. The actual Moon age average cycle is 29.53
days, but this can vary anywhere from –1 day to +1 day for specific months.
Since this watch performs calculations using integer values only (no fractions),
the margin for error of the displayed Moon age is ±2 days.
Tide graph
The wave on the watch’s tide graph indicates the current tide. ▲indicates that
the tide is currently rising, while ▼indicates a falling tide. Neither ▲nor ▼is
on the display at high tide and low tide.
Lunitidal Interval
Theoretically, high tide is at the Moon’s transit over the meridian and low tide is
about six hours later. Actual high tide occurs somewhat later, due to factors
such as viscosity, friction, and underwater topography. Both the time differential
between the Moon’s transit over the meridian until high tide and the time
differential between the Moon’s transit over the meridian until low tide are
known as the “lunitidal interval.” When setting the lunitidal interval for this
watch, use the time differential between the Moon’s transit over the meridian
until high tide.
Auto return features
If you leave a screen with flashing digits for two or three minutes without
performing any operation, the watch automatically saves any settings you have
made up to that point and exits the setting screen.
Data and Setting Scrolling
The Band Dbutton are used in various modes and screens to scroll through
data on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.
•Spring Tide: Tides occurring at new and full Moons, when the range
between high and low tides is greatest.
•Neap Tide: Tides occurring at first and last Moon quarters, when the
range between high tide and low tide is smallest.
•Intermediate Tide: Indicates tide at the midpoint between spring tide and
neap tide.
Tidal Movements
Tides are the periodic rise and fall of the water of oceans, seas, bays, and
other bodies of water caused mainly by the gravitational interactions between
the Earth, Moon and Sun. Tides rise and fall about every six hours. The tide
graph of this watch indicates tidal movement based on the Moon’s transit over
the meridian and the lunitidal interval. The lunitidal interval differs according to
your current location, so you must specify a lunitidal interval in order to obtain
the correct tide graph readings.
Backlight Precautions
The backlight uses an LED (light emitting diode) and a light guide panel that
cause the entire display to glow for easy reading in the dark. In any mode,
press Lto illuminate the display for about three seconds.
•The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
•The backlight automatically turns off whenever an alarm sounds.
•Frequent use of the backlight shortens the battery life.