MA0409-EA
Operation Guide 2877
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 D to change from mode to mode.
Timekeeping Mode
Stopwatch Mode
Recall Mode
Countdown Timer Mode
World Time Mode
Alarm Mode
Press
.
Daylight Saving Time (DST)
Timekeeping
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.
• Note that you cannot switch between Standard Time and Daylight Saving Time while
GMT (Greenwich Mean Time) is selected as your Home City code.
Use the Timekeeping Mode to set and view the current
time and date.
PM indicator
Day of week
Seconds
Read This Before You Set the Time and Date !
This watch is preset with a number of city codes, each of
which represents the time zone where that city is located.
When setting the time, it is important that you select the
correct city code for your Home City (the city where you
normally use the watch). If your location is not included in
the preset city codes, select the preset city code that is in
the same time zone as your location.
To toggle the Timekeeping Mode time between DST and Standard Time
1. In the Timekeeping Mode, hold down B until the
seconds start to flash, which indicates the setting
screen.
2. Press D once to display the DST setting screen.
3. Press C to toggle between Daylight Saving Time (ON
displayed) and Standard Time (OFF displayed).
4. Press B to exit the setting screen.
• The DST indicator appears on the display to indicate
that Daylight Saving Time is turned on.
• Note that all of the times for the World Time Mode city
codes are displayed in accordance with the time and
date settings you configure in the Timekeeping Mode.
Hour : Minutes
Year Month – Day
• After you correctly set your Home City time and date, you can set the watch up for
timekeeping with a different city code simply by changing the Home City code in the
Timekeeping Mode.
Stopwatch
To set the time and date
The 1/100-second stopwatch measures elapsed time, as well as lap/split times. You
can also store run data in memory.
• All of the operations in this section are performed in the Stopwatch Mode, which you
enter by pressing D.
1. In the Timekeeping Mode, hold down B until the
City code
seconds start to flash, which indicates the setting
screen.
2. Press D twice to move the flashing to the Home City
code setting (see the illustration below), and then use
C and A to select the code you want.
• Make sure you select your Home City code before
changing any other setting.
Run number
Lap/Split number
• For full information on city codes, see the “City Code
Table”.
Lap/Split
indicator
Lap time (hours,
minutes, seconds,
1/100 second)
3. Press D to move the flashing in the sequence shown
below to select the other settings.
Split time
Seconds
Day
DST
City Code
Year
Hour
Minutes
All Zero Clear
Important!
• A “run” is the total elapsed time and all the lap/split times you recorded from the
point you start the stopwatch until you stop it. The watch stores each run as a
separate memory record.
• The run number that appears on the display whenever you clear the stopwatch to all
zeros indicates the number of the next run record that will be created when you
perform a stopwatch operation. The watch automatically increases the run number
by one each time you store run data.
• “Lap time” is the time spent to cover a specific segment of a race, such as one lap
around a track. “Split time” is the time spent from the beginning of a race up to a
certain point.
Timing in Progress
Month
12/24-Hour format
4. When the setting you want to change is flashing, use C and A to change it as
described below.
Screen
To do this:
Do this:
00
10:5850
Reset the seconds to
Press C.
P
Toggle between Daylight Saving Time (ON) Press C.
and Standard Time (OFF)
OFF
• Pressing B in the Stopwatch Mode switches the positions of the lap time and split
time between the middle display area and the lower display area. Arrows appear
next to the LAP and SPLIT indicators to show which time is in the middle (up arrow)
and which time is in the lower (down arrow) display area.
• The hour of the time currently in the middle display area is indicated to the left of the
lap/split number in the upper display area.
P
Change the city code
Use C (east) and A (west).
TYO
10:5850
P
Change the hour or minutes
Use C (+) and A (–).
Press C.
Toggle between 12-hour (12H) and
24-hour (24H) timekeeping
12H
04 6-30
Change the year, month, or day
Use C (+) and A (–).
• The display range for the middle display area is 9 hours, 59 minutes, 59.99 seconds.
For the lower display area, it is 99 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.
5. Press B to exit the setting screen.
• See “Daylight Saving Time (DST)” below for details about the DST setting.
• The year can be set in the range of 2000 to 2039. The day of the week is calculated
automatically in accordance with the date.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all modes.
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Operation Guide 2877
About the Auto Light Switch
World Time
Turning on the auto light switch causes illumination to turn on, whenever you position
World Time shows the current time in 27 cities (29 time
zones) around the world.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing D.
your wrist as described below in any mode.
Current time in the zone
of the selected city code
Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes illumination to turn on.
• Wear the watch on the outside of your wrist.
City code
To view the time in another city code
In the World Time Mode, press C to scroll through city
codes (time zones) to the east or A to scroll to the west.
• For full information about city codes, see the “City Code
Table”.
Parallel to ground
More than 40°
• If the current time shown for a city is wrong, check your
Timekeeping Mode time and Home City code settings
and make the necessary changes.
Warning!
• Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
startle or distract others around you.
Timekeeping Mode time
• When the currently selected time zone is one that includes mostly ocean, a value
indicating the zone’s Greenwich Mean Time differential appears in place of a city
code.
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding on a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create
a distraction, which can result in a traffic accident and serious personal injury.
To toggle a city code time between Standard Time and Daylight Saving Time
1. In the World Time Mode, use A and C to display the
city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.
2. Hold down B for about one second to toggle Daylight
Saving Time (DST displayed) and Standard Time (DST
not displayed).
• The DST indicator is on the display 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.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down C for about two seconds to toggle the auto light
switch on (
displayed) and off (
not displayed).
) is on the display in all modes while the auto
• The auto light switch on indicator (
light switch is turned on.
• In order to protect against running down the battery, the auto light switch will turn off
automatically approximately six hours after you turn it on. Repeat the above
procedure to turn the auto light switch back on if you want.
To specify the illumination duration
1. In the Timekeeping Mode, hold down B until the
seconds start to flash, which indicates the setting
screen.
Alarm
2. Press A to toggle the illumination duration setting
between 2.5 seconds ( ) and 1.5 seconds ( ).
3. Press B to exit the setting screen.
When the alarm is turned on, the alarm sounds when the
Hourly time signal
alarm time is reached. You can also turn on an Hourly
on indicator
Time Signal, which will cause the watch to beep twice
every hour on the hour.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing D.
Alarm on indicator
AM indicator
To set the alarm time
1. In the Alarm Mode, hold down B until the hour setting
of the alarm time starts to flash, which indicates the
setting screen.
Reference
• This operation automatically turns on the alarm.
2. Press D to move the flashing between the hour and
minute settings.
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.
Timekeeping Mode time
Auto Return Feature
If you leave a screen with flashing digits on the display for two or three minutes
without performing any operation, the watch automatically exits the setting screen.
Alarm time (Hour : Minutes)
3. While a setting is flashing, use C (+) and A (–) to change it.
• When setting the alarm time using the 12-hour format, take care to set the time
A
P
Scrolling
correctly as a.m. ( indicator) or p.m. ( indicator).
4. Press B to exit the setting screen.
The A and C buttons are used in various modes and setting 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.
Alarm Operation
The alarm sounds at the preset time for about 10 seconds, regardless of the mode the
watch is in.
Initial Screens
• To stop the alarm tone after it starts to sound, press any button.
When you enter the World Time Mode, the data you were viewing when you last
exited the mode appears first.
To test the alarm
In the Alarm Mode, hold down C to sound the alarm.
Timekeeping
00
• Resetting the seconds to
while the current count is in the range of 30 to 59
To turn the Daily Alarm and the Hourly Time Signal on and off
In the Alarm Mode, press A to cycle through the settings as shown below.
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
00
reset to
without changing the minutes.
P
• With the 12-hour format, the (PM) indicator appears on the display for times in the
Hourly Time Signal On Indicator / Alarm On Indicator
A
range of noon to 11:59 p.m. and the (AM) 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.
Signal On
Alarm On
Signal Off
Alarm Off
Signal Off
Alarm On
Signal On
Alarm Off
• The watch’s built-in full automatic calendar 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.
• The alarm on indicator and the Hourly Time Signal on indicator are shown on the
display in all modes while these functions are turned on.
World Time
• The World Time Mode times are calculated from the current Home City time setting
in the Timekeeping Mode, using the Greenwich Mean Time (GMT) differentials
associated with each city code.
• The seconds count of the World Time is synchronized with the seconds count of the
Timekeeping Mode.
• The GMT differential is a value that indicates the time difference between Greenwich
Mean Time and the time zone where a city is located.
• GMT differential is calculated by this watch based on Universal Time Coordinated
(UTC) data.
Illumination
The display of the watch is illuminated using an EL
Auto light switch on indicator
(electro-luminescent) panel for easy reading in the dark.
The watch’s auto light switch automatically turns on
illumination when you angle the watch towards your face.
• The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
• You can specify 1.5 seconds or 2.5 seconds as the
illumination duration.
Illumination Precautions
• The electro-luminescent panel that provides illumination loses power after very long
• See “Illumination Precautions” for other important
information about using illumination.
use.
• Illumination may be hard to see when viewed under direct sunlight.
• The watch may emit an audible sound whenever the display is illuminated. This is
due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
To turn on illumination manually
The button you need to press to illuminate the display depends on the mode you are in.
• In the Timekeeping*, Stopwatch, or Countdown Timer Mode*, press C.
* If the Timekeeping Mode or Countdown Timer Mode setting screen is on the
display, press E.
• Illumination automatically turns off whenever an alarm sounds.
• Frequent use of illumination shortens the battery life.
• In the Recall, World Time, or Alarm Mode, press E.
• The above operation turns on illumination regardless of the current auto light switch
setting.
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Operation Guide 2877
Auto light switch precautions
• Wearing the watch on the inside of your wrist and movement or vibration of your arm
can cause the auto light switch to activate and illuminate the display. To avoid
running down the battery, turn off the auto light switch whenever engaging in
activities that might cause frequent illumination of the display.
• Illumination may not turn on if the face of the watch is
More than 15 degrees
more than 15 degrees above or below parallel. Make
too high
sure that the back of your hand is parallel to the ground.
• Illumination turns off after the preset illumination
duration (see “To specify the illumination duration”),
even if you keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with proper operation of the auto
light switch. If illumination does not turn on, try moving the watch back to the starting
position (parallel with the ground) and then tilt it back towards your face again. If this
does not work, drop your arm all the way down so it hangs at your side, and then
bring it back up again.
• Under certain conditions, illumination does not turn on until about one second after
you turn the face of the watch towards you. This does not indicate malfunction.
• You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
,
, and
Messages
• Performing any button operation that stores or recalls run data will cause
to
appear if battery power is low. Buttons will also become disabled for a few seconds.
Normal operation will return when battery power recovers.
• When the AC (all clear) operation is performed after the watch’s battery is replaced,
the message
will remain on the display for a few minutes as the watch
performs a memory check. Do not perform any button operation while
the display.
is on
• If
appears on the display, it means that the back of the watch is open or loose,
which is causing improper contact inside the watch. Whenever the message
appears on the display of the watch and stays there, take the watch to the store
where you purchased it or to your local CASIO distributor.
• Performing the AC (all clear) operation will cause all data currently stored in watch
memory to be deleted. Be sure to always keep separate written copies of all
important data.
City Code Table
City
Code
GMT
Differential
City
Other major cities in same time zone
–11
HNL
ANC
–11.0
–10.0
–09.0
Pago Pago
Papeete
Nome
Honolulu
Anchorage
San Francisco, Las Vegas, Vancouver, Seattle/Tacoma,
Dawson City
LAX
Los Angeles
–08.0
DEN
CHI
Denver
–07.0
–06.0
El Paso, Edmonton
Houston, Dallas/Fort Worth, New Orleans,
Mexico City, Winnipeg
Chicago
Montreal, Detroit, Miami, Boston, Panama City,
Havana, Lima, Bogota
La Paz, Santiago, Port Of Spain
NYC
CCS
New York
Caracas
–05.0
–04.0
–03.0
–02.0
–01.0
RIO Rio De Janeiro
–2
–1
Sao Paulo, Buenos Aires, Brasilia, Montevideo
Praia
GMT
LON
+00.0
+01.0
+02.0
Dublin, Lisbon, Casablanca, Dakar, Abidjan
London
Paris
Milan, Rome, Madrid, Amsterdam, Algiers, Berlin,
Hamburg, Frankfurt, Vienna, Stockholm
Athens, Helsinki, Istanbul, Beirut, Damascus,
Cape Town
Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, Moscow
Shiraz
PAR
CAI
JRS
JED
THR
DXB
KBL
KHI
DEL
DAC
RGN
BKK
Cairo
Jerusalem
Jeddah
Tehran
Dubai
Kabul
Karachi
Delhi
+03.0
+03.5
+04.0
+04.5
+05.0
+05.5
+06.0
+06.5
+07.0
Abu Dhabi, Muscat
Male
Mumbai, Kolkata
Colombo
Dhaka
Yangon
Bangkok
Jakarta, Phnom Penh, Hanoi, Vientiane
Singapore, Kuala Lumpur, Beijing, Taipei, Manila,
Perth, Ulaanbaatar
HKG
Hong Kong
+08.0
Tokyo
Adelaide
Sydney
Noumea
Wellington
TYO
ADL
SYD
NOU
WLG
+09.0
+09.5
+10.0
+11.0
+12.0
Seoul, Pyongyang
Darwin
Melbourne, Guam, Rabaul
Port Vila
Christchurch, Nadi, Nauru Island
*Based on data as of June 2004.
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