Casio 2763 User manual

Operation Guide 2763
1
MA0310-EA
Each press of the CC
CC
Cbutton sounds a confirmation tone and cycles through available modes in the sequence shown below.
•The watch will automatically revert to the Timekeeping Mode if you leave it in the Alarm Mode (excetp for the Target Alarm screen),
Recall Mode, or Hand Setting Mode without performing any operation for about two or three minutes.
Stopwatch Mode
Alarm Mode
Recall Mode
Dual Time Mode
Measured Value
TIME
DIFFERENCE
Alarm Number
Alarm Time
Moves to 12 o’clock
position and stops. Current battery level
Current time seconds count
Time Zone
Time in selected
time zone
Timekeeping Mode
Hand Setting Mode
PM Indicator
(no indicator for AM)
Receive Icon
Battery Level
Indicator
(Switches
display screen)
(Changes mode)
Mode Name
Day of the Week Month Day
Hour Minutes Seconds Month
Year Day
(Illuminates display)
button
button
button
button
Switching Between Screens
Each press of the button cycles through available modes in
the sequence shown below.
Days of the Week
SU : Sunday MO : Monday TU : Tuesday
WE : Wednesday TH : Thursday FR : Friday
SA : Saturday
• For information about the battery indicator, see “Battery
Indicator”. For information about the receive icon, see
“Receive Icon”.
Hour Hand Stopwatch 1/20-second
Hand
Minute Hand
24-hour handSecond Hand
Modes and Display Screens •The analog hands are not shown in the face illustrations shown in this User’s Guide.
The power supply of this watch uses a solar cell to generate
electrical power, which is stored by a rechargeable battery. Using
or storing the watch where it is not regularly exposed to light, or
allowing it to be blocked from light by your sleeve as you are
wearing it can cause the power of the rechargeable battery to run
down. To ensure stable operation, be sure to allow the watch to be
exposed to light as much as possible when you are wearing or
storing it.
Note that all data in memory and all settings are cleared
whenever you allow the level of the rechargeable battery
to drop to Level 4.
❚ Battery Indicator
Level 1
Level 2
Level 3
Level 4
All functions enabled.
All functions enabled.
Display, display illumination, alarms,
hourly time signal, signal reception,
and analog timekeeping disabled.
All functions, including digital
timekeeping, disabled.
•In the Stopwatch Mode, the battery indicator operates as the
stopwatch minute hand.
•Exposing the watch to direct sunlight or other strong light may
cause the battery level indicator to momentarily indicate a level
that is higher than the actual battery level. Because of this, you
should wait for a short while after charging to check the battery
level indicator.
•Signal reception will become enabled again when the battery is
recharged up to Level 2.
•Even after the battery drops to Level 4, watch operation will
resume as soon as charging starts. However, you should wait until
the battery reaches Level 2 before setting the time and date.
❚ Start charging at Level 3!
Battery Level 3 indicates that remaining battery power is very low.
Be sure to expose the watch to light for recharging as soon as
possible after the battery level indicator shows Level 3.
❚ Flashing Recovering Indicator
If you use the light or alarms a number of times during a short
period, a Recovering indicator flashes on the display and the
following operations become disabled as battery power recovers.
•Display illumination
•Alarm and hourly time signal
•Time calibration signal reception
•Analog timekeeping
Normal operation will return after the
battery recovers.
Power Supply
Recovering Indicator
❚ Charging Precautions
Avoid charging the watch in the following locations, and anywhere
else the watch may become very hot.
•On the dashboard of an automobile parked in the sun
•Very close to an incandescent light source or other sources of
heat
•In a location exposed to direct sunlight for long periods
Note that the display panel may become black under very high
temperatures. This is temporary, and the display will appear
normal again at lower temperatures.
Depending on the light source you are using, the
case of the watch may become quite hot during
charging. Take care to guard against burn injury
after charging.
❚ Charging the Battery
Point the solar panel (face) of the watch at a light source.
•Remember that even a partial blockage of the solar cell reduces
charging efficiency.
Example: Positioning the watch
Solar Cell
•The illustration shows the resin band model.
❚ Charging Guide
Starting from a full charge, the watch
should be able to continue operating
for about five months without further
charging under the conditions
described below.
Daily Use (All time values are
approximate.)
•Display Illumination: 1.5
seconds
•Alarms: 10 seconds
•Signal reception: 5 times
•Digital and analog
timekeeping
Making sure the watch is regularly
exposed to light ensures stable
operation.
•Charge Times Required to Advance to a Higher Level
Charging Time
Level 4 \Level 3 \Level 2 \Level 1
– – – – – –
– – – – – –
1 hr.
4hr.14hr.
3 hr.
5 hr.
49hr.
20hr.71hr.
Environment
(Luminosity)
Outdoor sunlight
(50,000 lux)
Indoor sunlight
(10,000 lux)
Outdoor overcast
(5,000 lux)
Fluorescent indoor
lighting (500 lux)
•Note that the above charging times are for reference only. Actual
charging time depends on a variety of environmental factors.
Required Daily Charging Time
• The following is the daily
amount of charging required
each day to support the
operations under “Daily Use”.
Environment
(Luminosity)
Outdoor sunlight
(50,000 lux)
Indoor sunlight
(10,000 lux)
Outdoor overcast
(5,000 lux)
Fluorescent indoor
lighting (500 lux)
5min.
24min.
48min.
8hr.
Charging
Time

Operation Guide 2763
2
Display Illumination
An LED light is used to illuminate the display for easy reading in
the dark. An auto light switch automatically illuminates the display
when you angle the watch towards your face for reading.
Illuminating the Display Manually
In any mode, press the
DD
DD
D
button to illuminate the
display for about 1.5 or two
seconds.
•The display does not illuminate if
a setting screen (one with a
flashing setting) is on the display.
•Pressing the Dbutton illuminates the display regardless of
whether the auto light switch is on or off.
•You can specify how long the display remains illuminated using
the procedure under “Specifying the Display Illumination
Duration”.
You may hear a faint rattling sound when you move the watch
around. This sound is caused by the movement of a metal
bulb that controls operation of the auto light switch, and does
not indicate malfunction.
Illuminating the Display with the
Auto Light Switch
The full auto light switch automatically illuminates the display
whenever you angle the watch towards your face for reading,
but only when it is dark.
• The full auto light switch does not illuminate the display
when surrounding light is bright. The light is very convenient
when reading the current time and other data in the dark.
The auto light switch illuminates the display for the specified
display illumination duration in all modes when the watch is
angled towards the face.
Turning the Auto Light Switch On or Off
In any mode (except when a settings screen is on the display),
hold down the Dbutton for about two seconds to toggle the auto
light switch on (auto light switch on indicator displayed) and off (no
indicator displayed).
Auto light
switch on indicator
•When the auto light switch is on, holding down the Lbutton for
about two seconds turns the auto light switch off (auto light switch
indicator not displayed).
❚ Positioning Your Arm Correctly
Rotate your arm so the watch
is angled at about 40 degrees,
so you can read its face.
More
than 40
degrees
With the watch on your
wrist, position it parallel
with the ground.
•You should be wearing the watch on the outside of your wrist
when using the auto light switch.
•Make sure that the left (9 o’clock) and
right (3 o’clock) sides of the watch are
within ±15 degrees of being level with the
ground. The auto light switch may not
operate properly if the angle is greater.
Important!
•The light may be difficult to see if you turn it on under bright
sunlight.
•If you press the Bbutton or if an alarm operation starts while the
display is illuminated, illumination will turn off.
Auto Light Precautions
•Frequent use of the auto light can run down the battery.
•The auto light switch may cause the display to illuminate when
your sleeve covers the display of the watch.
•The display may not illuminate immediately when you angle the
watch towards your face. This does not indicate malfunction.
•The display remains lit for the specified display illumination
duration (1.5 seconds or two seconds) only, even if you leave the
watch angled towards your face.
•The display may illuminate unintentionally when you wear the
watch on the inside of your wrist, when you shake your arm, or
when you raise your arm. Be sure to turn off the auto light
switch whenever you do not need display illumination.
•Keep the auto light switch turned off whenever you are wearing
the watch on the inside of your wrist.
•Electro-static charge and magnetism can interfere with auto light
operation and even make operation impossible. If this happens
lower your arm to the starting position and then raise it again. If
you still have trouble with display illumination, try lowering your
arm down to your side and then raise it to your face for reading.
Specifying the Display Illumination
Duration
You can use the following procedure to specify either 1.5 seconds
or two seconds for the display illumination duration.
1. In the Timekeeping Mode,
hold down the AA
AA
Abutton
for about two seconds
until the currently selected
time zone starts to flash
on the display.
•The second hand moves to
12 o’clock at this time.
2. Press the CC
CC
C button three
times so the seconds
count is flashing on the
display.
3. Press the BB
BB
Bbutton to
toggle the display
illumination duration
setting between 1.5
seconds and two seconds.
•Two seconds is selected
when the indicator is on the
display.
•1.5 seconds is selected when
the indicator is not on the
display.
•
indicator displayed
(Indicator appears on
the settin
g
screen only.)
4. When settings are the way
you want, press the AA
AA
A
button.
•This exits the setting screen.
•At this time, the second hand will adjust automatically to the
digital time.
•The display also will exit the setting screen automatically if
you do not perform any operation for about two or three
minutes.
Time Zone
(3 times)
Seconds
The Power Saving feature of the watch is turned on at the factory.
•Power Saving causes the watch to automatically enter a sleep state to save power whenever the watch is left in the dark.
•Note that the watch may also enter the sleep state if the watch is blocked from light by your sleeve.
❚ How the sleep state works
•Display sleep state
The display sleep state is triggered whenever the watch is left in
the dark for three or four days.
•The display goes blank in the display sleep state.
Alarms and the hourly time signal continue to operate normally
while the watch is in the display sleep state.
Even when the watch is in the sleep state, digital-analog time
coordination and auto signal receive are both performed.
•Function sleep state
The function sleep state is triggered whenever the watch is left
in the dark for four days.
•Alarms and the hourly time signal are also disabled while the
watch is in the function sleep state.
In the function sleep state, analog timekeeping is disabled, so
digital-analog time coordination is not performed.
•Digital timekeeping functions continue to operate normally in
the function sleep state.
❚ To recover from the sleep mode
Place the watch in an area that is well-lit, press any button, or
angle the watch towards your face to illuminate the display using
the Auto Light.
•It can take up to two seconds before the display re-appears after
you place the watch in a well-lit area.
❚ To turn power saving on and off
See the procedure under “To set the time and date manually” for
information about turning off power saving.
Leaving the watch in a drawer or anywhere else it is dark can
cause the power saving mode to trigger in order to conserve
battery power.
Power Saving

Operation Guide 2763
3
❚ Time Required for Reception
Signal reception takes anywhere from about two to seven minutes.
•Note that when “A” is specified as the frequency selection mode,
signal reception can take up to 14 minutes.
•See “Configuring Signal Reception Settings” for more information.
❚ Triggering Reception Manually
I n the Timekeeping Mode,
hold down the BB
BB
Bbutton for
about two seconds until the
watch beeps.
•This indicates that manual
receive has started. On going
reception is indicated by the
icon and the receive indicator.
Stopping Signal Reception
Press the
BB
BB
B button.
•All other buttons besides Bare disabled during signal reception.
When reception is successful
The watch terminates reception and adjusts the current time. Next it beeps
and then displays the date and time the adjustment was performed.
• The icon on the display also indicates successful signal reception.
•Following successful reception, the analog hands adjust
automatically to the digital time.
When reception fails
The watch does not adjust its current time setting, and displays
“---” instead.
•The display also returns to the normal timekeeping screen
automatically if you do not perform any operation for about one
or two minutes.
❚ Receive Icon
The receive icon cycles from
“Unstable” through “Stable” as
shown below while reception is in
progress. How far it cycles depends
on the signal strength. Keep the
watch in a location where reception
is stable when it is in progress.
Unstable Stable
•Even under optimum reception conditions, it can take about 10
seconds for reception to stabilize.
•Use the receive icon to check reception status and to
determine the best location for signal reception.
•Note that weather, the time of day, surroundings, and other
factors can all affect reception.
❚ Analog Hands and Signal Reception
Second Hand
This hand moves to the 12 o’clock position when reception starts.
•It resumes normal movement after reception is complete.
•Pressing a button to stop reception causes the second
hand to move to the seconds count as kept by the digital
display and resume normal operation.
Hour and Minute Hand
These hands continue to operate normally.
Note that the second hand does not move while signal
reception is in progress.
Receive Icon
What is a radio-controlled watch?
Your radio-controlled watch is designed to receive a time
calibration signal that contains standard time data and adjust its
current time setting accordingly.
Signal received using
built-in antenna.
Signal Data
Cesium
Atomic Clock
Transmitter Long-wave
Calibration Signal
Internally
Decode
Watch
Time Data
Watch decodes
received data and
converts it to time
data.
Time is adjusted
according to time
data.
After the watch receives the time calibration signal, it performs
internal calculations to determine the current time. Because of
this, there may be an error of up to one second in the
displayed time.
Calibration Signal
•The Japanese calibration signal (Call Sign: JJY) is maintained by
the independent Japan Ministry of Posts and Telecommunications
Communication Research Laboratory (CRL). It is a long wave
signal transmitted 24 hours a day from the Mt. Otakadoya
transmitter (40kHz) located in Tamura-gun, Fukushima Prefecture,
and from the Mt. Hagane transmitter (60kHz) located on the
border between Saga Prefecture and Fukuoka Prefecture.
•The U.S. calibration signal (Call Sign: WWVB) is transmitted by
the National Institute of Standards and technology from Fort
Collins, Colorado.
Though the calibration signal is normally transmitted 24 hours
a day, transmission may be interrupted occasionally due to
maintenance, lightening, etc.
How a Radio-controlled Watch Works Reception Range
This watch is designed to receive the standard time calibration signal of Japan (JJY) or of the United States (WWVB). The signal that is
received depends on the current time zone setting in the Timekeeping Mode.
•For information about selecting a Time Zone, see “Setting the Time and Date Manually”.
Time Zone
+9.0
–5.0, –6.0, –7.0, –8.0
Transmitter
Either the Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal (60kHz)
Fort Collins, Colorado signal
1000km
Mt. Hagane
(60kHz)
Mt. Otakadoya
(40kHz)
500km
1000km
500km
Transmitter Location
•Under optimum conditions, the calibration signal should be
receivable up to 1,000 kilometers from the transmitter. Note
that the wave is relatively weak at distances greater than
500km, so reception may be poor at long distances.
Location
Reception is difficult and may even be impossible in the locations
described below. Avoid such locations when performing signal
reception.
•You should think of your watch operating like a radio or TV when it
is receiving the calibration signal.
If you are experiencing problems with reception, move away
from the types of locations described above to a location with
better reception, and try again.
Receiving the Calibration Signal
There are two methods you can use to receive the time calibration
signal.
•Auto receive (Reception is performed automatically at
midnight, 1:00, 2:00, 3:00, and 4:00 each morning.)
• Manual receive (You initiate reception using a button operation.)
• If reception is not successful for any of the normal auto receive times
shown above, auto receive is performed one more time at 5:00 a.m.
• The watch is set up for auto reception at the factory, so all you need
to do is to place it in a location that allows good reception each night.
❚ Setting Up to Make Reception Easier
Remove it from your wrist and place the watch somewhere so its
top (12 o’clock side, where the antenna is located) is facing
approximately in the direction of the signal transmitter. Keep it
away from metal objects.
Resin Band
Metal Band
•Orienting the watch so it is sideways to the transmitter makes it
more difficult to receive the signal.
•Do not move the watch while it is receiving the calibration signal.
Near mountains
Inside a vehicle
(automobile, train, plane, etc.)
In a location where there is
radio interference
(construction site, airport, etc.)
Next to a household appliance
or office equipment
(TV, speaker, fax, PC,
mobile phone, etc.)
Among or near buildings Near high-voltage lines
Fort Collins
3000km
1000km
Transmitter Location
•Under optimum conditions, the calibration signal should be
receivable up to 3,000 kilometers from the transmitter. Note
that the wave is relatively weak at distances greater than
1,000km, so reception may be poor at long distances.
•Geographic contours, nearby buildings, the season, the time of day, can even make reception impossible even when you are within range of
the transmitter.
•Best reception is possible late at night.

Operation Guide 2763
4
Configuring Signal Reception
Settings
Use the procedure below to turn auto calibration signal reception
on and off. When +9.0 (Tokyo) is selected as the time zone, you
can select either of two different Japanese transmitters for
reception.
•For information about selecting a Time Zone, see “Setting the
Time and Date Manually”.
•The initial factory default settings of the watch are +9.0 (Tokyo) for
the time zone, and A(auto select) for the transmitter selection
mode.
•You can perform the following procedure while the current time
zone setting is +9.0,–5.0,–6.0,–7.0 or –8.0.
1. In the Timekeeping Mode,
press the BB
BB
Bbutton to
display the last reception
date and time screen.
•The display will return to the
normal timekeeping screen
automatically if you do not
perform any operation for
about one or two minutes.
2. Hold down the AA
AA
Abutton
for about two seconds
until the indicator starts to
flash.
•This is the signal reception
setting screen.
❚ Viewing the Last Reception Date and Time
In the Timekeeping Mode, press the
BB
BB
B button. This displays
the date and time of the last successful signal reception.
•The display alternates between the reception date and reception
time at two-second intervals.
•To return to the Timekeeping Mode, press the Bbutton again.
•The display also returns to the normal timekeeping screen
automatically if you do not perform any operation for about one or
two minutes.
Reception
Date Reception Time
2-second
interval
When the time zone setting is +9.0
•A (AUTO)
Selecting this setting turns on auto receive and auto
transmitter selection. The watch automatically selects either
the Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal
(60kHz), whichever is strongest.
•J 40
Selecting this setting turns on auto receive. The watch always
receives the Mt. Otakadoya signal (40kHz).
•J 60
Selecting this setting turns on auto receive. The watch always
receives the Mt. Hagane signal (60kHz).
•OFF
Selecting this setting turns off auto receive and auto
transmitter selection.
When the time zone setting is –5.0, –6.0, –7.0, –8.0
•W 60
Selecting this setting turns on auto receive. The watch always
receives the Fort Collins, Colorado signal.
•OFF
Selecting this setting turns off auto receive and auto
transmitter selection.
3. Use the DD
DD
Dand BB
BB
Bbuttons
to cycle through the
available signal reception
settings.
4. After the setting is the way
you want, press the AA
AA
A
button to exit the setting
screen.
•Press the Bbutton to return
to the Timekeeping Mode.
•The display also will return to
the normal timekeeping
screen automatically if you do
not perform any operation for
about two or three minutes.
Time setting is incorrect following signal reception.
Cause: •Summer time is turned on or the wrong
time zone is selected.
Corrective Measures: •If the time is advanced by one hour, it
probably means that summer time
(indicated by the DST indicator on the
display) is turned on. If the time is off by
more than one hour, it probably means
that the wrong time zone is selected. Use
the procedure under “Setting the Time
and Date Manually” to correct the
applicable setting.
Cannot configure signal reception settings.
Cause: •Signal reception settings can be
configured only while the current time
zone setting is +9.0,–5.0,–6.0,–7.0 or
–8.0.
Corrective Measures: •Change the time zone setting to +9.0,
–5.0,–6.0,–7.0 or –8.0. For information
about selecting a time zone, see “Setting
the Time and Date Manually”.
Troubleshooting
Cannot perform manual reception.
Cause: •Manual receive can be performed in the
Timekeeping Mode only.
•Manual reception can be performed only
while the current time zone setting is
+9.0,–5.0,–6.0,–7.0 or –8.0.
Corrective Measures: •Perform manual receive in the
Timekeeping Mode.
•Change the time zone setting to +9.0,
–5.0,–6.0,–7.0 or –8.0. For information
about selecting a time zone, see “Setting
the Time and Date Manually”.
The icon is not on the display even though auto signal
reception is turned on.
Cause: •The icon appears after the watch
successfully receives the calibration
signal and adjusts the current time
setting.
•A single receive operation was not
successful.
•The watch is not in the Timekeeping
Mode or Dual Time Mode when an auto
receive time is reached.
•You performed manual reception, which
clears the icon from the display.
Corrective Measures: •Check to make sure the watch is in a
location where it can receive the signal.
•Place the watch in a location where
reception conditions are good.
•Make sure that the watch is in the
Timekeeping Mode or Dual Time Mode
during the auto receive times.
Calibration Signal Reception
Precautions
•Auto reception can be performed while the watch is in the
Timekeeping Mode or Dual Time Mode only.
•Receipt of a calibration signal causes the digital time to be
adjusted first, followed by adjustment of the analog time. In order
to ensure correct ajustment of the analog time, be sure to match
the analog time with the digital time before performing a signal
receive operation.
•Note that analog timekeeping is not performed during signal
reception, so the time indicated by the analog hands may be
wrong.
•Operating any button while auto reception is in progress will
cause the watch to beep and then exit the receive operation.
•Make sure you are within the range of the calibration signal
transmitter before performing the reception operation. Remember
that geographic contours, nearby buildings, the season, the time
of day, can make reception impossible even when you are within
range of the transmitter.
•Proper reception may be impossible if there is something blocking
the signal. If reception is unsuccessful, try again.
•This watch is designed to adjust its current time setting in
accordance with the calibration signal transmitted in Japan and
the United States only. Note that you will need to make your own
adjustments when using this watch outside of Japan or the United
States, or in any area that is outside the range of one of the
receivable time calibration signal transmitters.
•When the watch is unable to adjust its time signal using the
calibration signal for some reason, timekeeping accuracy is within
±15 seconds per month.
•Strong electrostatic charge can cause timekeeping error.
•Signal reception is canceled if an alarm starts to sound while it is
being performed.
•The watch’s calendar shows dates up to the year 2099.
Attempting a receive operation after that causes an error.
•If you cannot receive the calibration signal or if the current time
setting is incorrect after signal reception, check the current setup
of the watch.
•The following are the watch’s factory default settings, which
are configured automatically whenever you have the battery
of the watch replaced.
Transmitter
Time Zone
Summer Time Auto switching (according to
signal data)
Auto Japan transmitter select
(40kHz/ 60kHz)
Tokyo (Japan) time zone

Operation Guide 2763
5
Entering the Stopwatch Mode causes the hands used for
stopwatch timing to move automatically to the 12 o’clock
position.
•If a stopwatch timing operation is in progress when you
enter the Stopwatch Mode, the hands will move to the
current elapsed time.
Timekeeping Mode Stopwatch Mode
Selecting Lap or Split Time
Display for a Stopwatch Elapsed
Time Operation
Before starting an elapsed time operation in the Stopwatch Mode,
you should select display of either lap times or split times.
While the Stopwatch Mode screen shows all zeros, press
the AA
AA
Abutton to toggle between the lap time (“LAP”
indicator appears) and split time (“SPL” indicator appears)
displays.
•Regardless of whether you select display of lap times or split
times, both are stored in lap/split time memory during the elapsed
time operation.
Lap Time Display Split Time Display
Performing Stopwatch Operations
Start Lap/Split Time Recording Stop
Press the button. Press the button. Press the button.
•This starts the elapsed time operation.
•Starting a new elapsed time operation
from zero deletes all lap and split time
data currently in lap/split time memory.
•This freezes the current time on the
digital display for five seconds, and
stores it in lap/split time memory.
Elapsed time measurement continues
internally at this time.
•Though the digital time freezes, the
stopwatch hands continue to move.
•This stops the elapsed time operation.
•Pressing the Abutton while timing is
stopped resets the stopwatch.
Resetting the stopwatch stores the
final elapsed time that is on the display
to lap/split time memory.
Lap Time Display
(Start) (Lap) Lap Time
Lap Number
(Reset) (Stop)
(Start) (Split) (Reset) (Stop)
Split Time Display
Split Time
Viewing Lap/Split Time Memory
Contents
Use the following procedure to recall lap/split time memory
contents.
1. Use the CC
CC
Cbutton to enter
the Recall Mode
•This displays the last (newest)
lap/split time that you
recorded.
2. Use the BB
BB
Bbutton to scroll
through lap/split time
record numbers.
•Each press of the Bbutton
advances to the next older
record.
•Holding down the Bbutton
scrolls through records at high
speed.
•When you stop at a record, its
lap time or split time will
appear in place of the record
number after a few moments.
Example: When there are 10 lap/split time records in memory
LAP 10
(Newest record) LAP 9 LAP 1
Lap Number
Using the Stopwatch
Lap Times
A lap time is the time that elapses during a specific portion of the
race, such as a lap around a track.
Example: Measuring the lap time for one lap of a track event,
car race, etc.
Start Stop
Lap 1
Lap 2
Lap 3
Split Times
A split time is the time elapsed from the start, up to any point
along the course of the race.
Example: Measuring splits every 10 kilometers
Start Stop
Split 1
Split 2
Split 3
❚ Elapse Time Measurement
Start Stop Reset
Cumulative Time Measurement
Pressing the Bbutton to restart the stopwatch without resetting it
to all zeros resumes elapsed time measurement from where it was
last stopped.
❚ Recording Lap/Split Times
ResetStopStart Lap/Split Lap/Split
❚ Recording the Times of 1st and 2nd Place
Finishers (Split Time Display)
Start 1st finisher
(Displays time
of 1st finisher.)
2nd finisher
(Displays time
of 2nd finisher.)
Reset
Lap/Split Time Memory
You can store up to 50 lap/split times in memory. Performing a lap/
split time operation when there are already 50 records in memory
automatically deletes the oldest record to make room for the new
times.
The stopwatch measures elapsed time in units of 1/100 second up to 59 minutes, 59.99 seconds (60 minutes). When the maximum limit is
reached, the elapsed time automatically returns to zero and timing continues from there. Performing a lap/split operation automatically
stores lap/split times in memory (up to 50 records). A simple operation lets you recall lap/split time records when you need them.
How Hands Operate in the
Stopwatch Mode
In the Stopwatch Mode, elapsed time is indicated both by the
digital display and by the hands of the watch. Resetting the
stopwatch to zero causes the hands to return to the 12 o’clock
position.
•In the Stopwatch Mode, the second hand indicates elapsed
seconds, while the battery indicator indicates elapsed minutes.
•When you start an elapsed time operation in the Stopwatch Mode
and when you exit or enter the Stopwatch Mode while an elapsed
time operation is in progress, the stopwatch 1/20-second hand
rotates for one minute. After that it stops at the 12 o’clock position.
Stopping the elapsed time operation causes the hand to move to
the current 1/20-second position.
Stopwatch
1/20-second Hand Digital display
(minutes, seconds,
1/100 second)
Stopwatch
Minute Hand Stopwatch
Second Hand

Operation Guide 2763
6
Using Summer Time (DST)
Summer time, or Daylight Saving Time (DST) as it is called in
some countries, calls for setting clocks ahead one hour during the
summer season. Note that the use of summer time depends on
the country and even the local area.
Turning Summer Time On and Off
1. In the Dual Time Mode, use the BB
BB
Bbutton to display the
time zone whose summer time setting you want to
change.
2. Hold down the AA
AA
Abutton
for about two seconds to
toggle summer time on or
off.
•The “DST” indicator appears
on the display and
timekeeping in the selected
time zone is advanced by one
how when summer time is
turned on.
•You can turn summer time on
or off independently for each
Dual Time Mode time zone.
Note, however, that you
cannot turn on summer time
for the “G0.0” (Greenwich
Mean Time) time zone.
3. While any record is displayed, you can press the AA
AA
A
button to toggle between the lap time and split time
displays.
Lap Time Split Time
Clearing Lap/Split Time Memory Records
•Starting a new elapsed time operation from zero deletes all lap
and split time data currently in lap/split time memory.
•You can also manually clear lap/split time memory by holding
down the Aand Bbuttons at the same time for about two
seconds.
•“LAP - - ” appears on the screen after lap/split time memory is
cleared.
•Note that you cannot delete individual lap/split time memory
records.
The Dual Time Mode provides you with easy access to the current
time in any one of 29 times zones around the globe.
•When you enter the Dual Time Mode, the screen for the time zone
that was displayed when you last exited the mode appears first.
•The seconds count in the Dual Time Mode is linked with the
Timekeeping Mode seconds count.
•Dual Time mode times are displayed in the same format (12-hour
or 24-hour) that you selected in the Timekeeping Mode.
Important!
If a Dual Time Mode time is incorrect, check the time setting and
time zone setting of the Timekeeping Mode, and correct them if
necessary.
•For information about selecting a Time Zone and setting the
time, see “Setting the Time and Date Manually”.
DST indicator
Time Zone List
+12.0
+11.0
+10.0
+9.5
+9.0
+8.0
+7.0
+6.5
+6.0
+5.5
+5.0
+4.5
+4.0
+3.5
+3.0
+2.0
+1.0
+0.0
G 0.0
–1.0
–2.0
–3.0
–4.0
–5.0
–6.0
–7.0
–8.0
–9.0
–10.0
–11.0
Time
Zone Cities Time
Zone Cities
Wellington, Christchurch
Noumea, Port Vila
Sydney, Guam
Adelaide
Tokyo, Seoul,
Pyongyang
Hong Kong, Singapore,
Kuala Lumpur, Beijing,
Taipei, Manila
Bangkok, Jakarta, Hanoi
Yangon
Dakar
Delhi
Karachi
Kabul
Dubai, Qatar
Teheran
Jeddah, Kuwait,
Moscow
Athens, Cairo, El
Salaam, Helsinki, Beirut
Paris, Rome, Madrid,
Frankfurt
London, Dublin
Greenwich Mean Time
Azores
Rio de Janeiro, Sao
Paulo, Buenos Aries
Caracas, San Diego
New York, Montreal,
Miami, Boston
Chicago, Houston,
Mexico City
Denver, El Paso,
Edmonton
Los Angeles,
San Francisco,
Las Vegas
Anchorage, Nome
Honolulu, Papeete
Pago Pago
•The contents of the above table are current as of June 2003.
•Time zones in the above table are in accordance with Universal
Time Coordinated (UTC).
Dual Time Mode
Time Zone Search
In the Dual Time Mode, press the BB
BB
Bbutton to scroll
through time zones.
•If you stop at a time zone, the current time will appear in place of
the time differential after a few moments.
•Holding down the Bbutton scrolls through time zones at high
speed.
•The colon between the hour and minute digits flash in the Dual
Time Mode.
•Pressing the Abutton in the Dual Time Mode displays the time
differential of the currently selected time zone for about one
second.
(Forward)
Time Zone
(GMT Differential) Time in selected time zone

Operation Guide 2763
7
5. Use the DD
DD
D(+) and BB
BB
B(–)
buttons to change the
minute setting.
•Holding down either button
scrolls the setting at high
speed.
6. When setting is the way
you want, press the AA
AA
A
button.
•This exits the setting screen.
•The alarm you set is turned
on automatically whenever
you change its settings.
•The display also will exit the
setting screen automatically if
you do not perform any
operation for about two or
three minutes.
Using the Alarms
You can set up to five independent daily alarms. An alarm sounds
for 10 seconds when an alarm time is reached.
❚ To view the alarm time or target alarm time
In the Alarm Mode, press the BB
BB
Bbutton to cycle through
the alarm screens in the sequence shown below.
•The alarm number appears first, followed by the current alarm
time setting.
Alarm Number
Alarm Time
Alarm 1
(AL1) Alarm 2 (AL2) Alarm 3 (AL3)
Hourly Time
Signal
(:00)
Snooze Alarm
(AL5)
Target Alarm
(AL4)
❚ To set an alarm time
1. In the Alarm Mode, use the
BB
BB
Bbutton to scroll
through the alarm screens
(AL1 to AL5) until the one
you want is displayed.
2. Hold down the AA
AA
Abutton
for about two seconds
until the hour digits of the
alarm time start to flash.
•This is the setting screen. At
this time the displayed alarm
turns on automatically. If you
have the snooze alarm
displayed (AL 5), the snooze
indicator (SNZ) also appears
at this time.
3. Use the DD
DD
D(+) and BB
BB
B(–)
buttons to change the
hour setting.
•Holding down either button
scrolls the setting at high
speed.
•When setting the hour, make
sure you specify AM (no
indicator) or PM (P) correctly
when using 12-hour
timekeeping, or that you
specify the correct 24-hour
time.
•Alarm mode times are
displayed in the same format
(12-hour or 24-hour) that you
selected in the Timekeeping
Mode.
4. Press the CC
CC
Cbutton so the
minute setting flashes.
Hour
(Back)
(Forward)
Minute
❚ To turn an alarm on or off
1. In the Alarm Mode, use the BB
BB
Bbutton to display the
screen for the alarm (AL 1 through AL 5) you want to
turn on or off.
2. Press the AA
AA
Abutton to toggle the displayed alarm on or
off.
•Turning on an alarm also causes its “on” indicator to appear.
The snooze alarm screen also has a snooze indicator (SNZ).
Alarm 1 Screen Snooze Alarm Screen
Snooze Indicator
Shows “on” when the alarm is on.
Shows “oF” when the alarm is off.
•Note that the “on” and “oF” indicators appear in the Alarm
Mode only. The snooze indicator (SNZ) remains on the display
in all modes.
Using the Hourly Time Signal
The hourly time signal causes the watch to beep every hour on the
hour.
❚ To turn the hourly time signal on and off
1. In the Alarm Mode, use the BB
BB
Bbutton to display the
screen for the hourly time signal (SIG:00).
2. Press the AA
AA
Abutton to toggle the hourly time signal on
or off.
•Turning on a the hourly time signal causes its “on” indicator to
appear.
Hourly Time Signal Screen
Shows “on” when the hourly time signal is on.
Shows “oF” when the hourly time signal is off.
•Note that the “on” and “oF” indicators appear in the Alarm
Mode only.
(Back)
(Forward)
Alarm Mode
Types of Alarms
•Daily Alarms (AL 1, AL 2, AL 3)
The watch beeps for 10 seconds when the alarm time is
reached.
•Target Alarm (AL 4)
With a target alarm, the time remaining until the alarm time
counts down on the display. The watch beeps for 10 seconds
when the alarm time is reached.
•Snooze Alarm (AL 5)
With the snooze alarm, the watch beeps for 10 seconds when
the alarm time is reached, and up to seven times at
five-minute intervals thereafter. Pressing any button stops the
beeper, but the alarm will sound again after five minutes.
About the Target Alarm Time Screen
When your turn on the target alarm (AL 4), the display shows the
alarm time momentarily and changes to show how much time
remains until the target alarm time.
Alarm Number Alarm Time Remaining Time
❚ Stopping the Alarm Beeper
Pressing any button while the beeper is sounding stops it.
•In the case of the snooze alarm the alarm will sound again in
about five minutes. The snooze indicator flashes while the snooze
alarm is active (indicating that the alarm will sound again).
•The snooze alarm will be canceled automatically when any of the
following occurs while the SNZ indicator is flashing on the display.
•If you turn off the snooze alarm in the Alarm Mode
•If you enter the Alarm Mode, display the snooze alarm screen,
and then display the setting screen.
•If you enter the Timekeeping Mode and then display the setting
screen.
❚ To test the alarm
In the Alarm Mode, hold down the Bbutton to sound the alarm.

Operation Guide 2763
8
To select 12/24-hour timekeeping
While the 12/24-hour setting is
selected, press the Dbutton to
toggle the timekeeping format
between 12-hour (“12H” indicator)
and 24-hour (“24H” indicator).
To reset the seconds to 00
While the seconds are selected,
press the Dbutton to reset them to
00 in accordance with the time
signal on the radio, TV, etc.
•Pressing the Dbutton while the
seconds count is in the range of
30 to 59 resets it to 00 and also
adds 1 to the minutes. Pressing
the Dbutton in the range of 00
to 29 resets the seconds count
without changing the minutes.
To change the hour, minutes, year, month, or
day setting
Press the Dbutton to increase the
selected setting or the Bbutton to
decrease it.
•Holding down either button scrolls
the setting at high speed.
•When setting the hour, make sure
you specify AM (no indicator) or
PM (P) correctly when using
12-hour timekeeping, or that you
specify the correct 24-hour time.
•You can set a year in the range of
00 (2000) to 99 (2099). The day
of the week is set automatically in
accordance with the date you set.
•The watch automatically makes adjustments for leap years and
month lengths.
To turn Power Saving On and Off
While the Power Saving setting is
selected, press the Dbutton to
toggle it ON and OFF.
•Turning on Power Saving causes
the Power Saving indicator to
appear on the setting screen.
Time Zone
+9.0 = Tokyo (Japan)
(Back)
(Forward)
12/24-hour format
Resets to 00 seconds
(Forward)
(Back)
Hour
Minutes
on=ON
OFF=OFF
6. When setting is the way you want, press the AA
AA
Abutton.
•This exits the setting screen.
•The display also will exit the setting screen automatically if
you do not perform any operation for about two or three
minutes.
Digital-Analog Synchronization
The watch automatically adjusts its analog setting to match the
current digital time setting.
•When adjusting the analog time, the hands may move clockwise
or counterclockwise.
•Depending on how many hours different the digital and analog
time settings are, it may take some time for the analog hand
setting procedure to be finished.
•After adjustment of the hour and minute hand, the second hand
will adjust automatically to the digital time.
12 o’clock
(Forward)
Setting the Time and Date Manually 5.
a. Press the CC
CC
Cbutton to
display the time and date
setting.
•Use the Cbutton to cycle
through the time and date
settings shown below. Each
press of the Cbutton causes
the applicable setting to flash.
Time Zone Summer Time 12/24-hour
Hour
MinuteYearMonth
Day
Power Saving Seconds
b. Use the DD
DD
Dand BB
BB
Bbuttons to change the currently
selected setting.
You can use the following procedure to set the current time and
date of the time zone that you currently have selected in the
Timekeeping Mode.
•Always use the Timekeeping Mode to set and adjust the current
time and date settings.
If you are planning to manually change both the digital and
analog settings, be sure to adjust the digital setting first.
To set the time and date manually
1. In the Timekeeping Mode,
hold down the AA
AA
Abutton
for about two seconds
until the currently selected
time zone starts to flash
on the display.
•This is the setting screen.
•The second hand moves to 12
o’clock at this time.
2. Use the DD
DD
D(+) and BB
BB
B(–)
buttons to scroll through
the time zones until the
one whose time you want
to set is displayed.
•See the “Time Zone List”
for more information about
time zones.
•Holding down either button
scrolls the setting at high
speed.
3. Press the CC
CC
Cbutton so the
summer time setting is
displayed.
4. Press the DD
DD
Dbutton to
cycle through the summer
time settings until the one
you want is displayed.
•DS A
This setting enables the auto summer time setting, which
turns summer time on or off in accordance with the received
time calibration signal.
•When this setting is selected the watch automatically
adjusts its time in accordance with Japanese summer time
when the time zone is +9.0, or with U.S. Daylight Saving
Time when the time zone is –5.0,–6.0,–7.0,or –8.0.
•DS OFF
This setting turns off summer time, and displays the current
time normally.
•DS On
This setting turns on summer time.
•Selecting this setting displays the DST indicator, and
advances the current time setting by one hour.
•Note that pressing the Dbutton in the above step while any time
zone other than +9.0,–5.0,–6.0,–7.0,or –8.0 will simply toggle
the summer time setting between DS OFF and DS On.
Manually Setting the Analog Time
You can use the Hand Setting Mode to manually adjust the analog
time when it does not match the digital time.
1. Use the CC
CC
Cbutton to enter
the Hand Setting Mode.
2. Hold down the AA
AA
Abutton
for about two seconds
until the second hand
stops at the 12 o’clock
position and “- 00 -”
flashes on the digital
display.
3. If the second hand does
not align with the
12 o’clock position by
itself, use the DD
DD
D button to
adjust it.
•Each press of the Dbutton
advances the second hand by
one second.
•Holding down the Dbutton
advances the second hand at
high speed.

Operation Guide 2763
9
9. If the stopwatch minute
hand is not aligned with
the 12 o’clock position,
use the DD
DD
Dbutton to
adjust it.
•Each press of the Dbutton
advances the stopwatch
minute hand by one step.
•Holding down the Dbutton
advances the hand at high
speed.
10 .When all the settings are the way you want, press the
AA
AA
Abutton.
•This exits the setting screen and automatically synchronizes
the minute hand with the current seconds count.
•At this time, the second hand will adjust automatically to the
digital time.
•The display also will exit the setting screen automatically if
you do not perform any operation for about two or three
minutes.
7. If the 1/20-second hand is
not aligned with the
12 o’clock position, use
the DD
DD
Dbutton to adjust it.
•Each press of the Dbutton
advances the 1/20-second
hand by one step.
•Holding down the Dbutton
advances the hand at high
speed.
8. Press the CC
CC
Cbutton to
advance to setting of the
stopwatch minute hand
for adjustment.
4. Press the CC
CC
Cbutton to
move the flashing
between the hour and
minute settings.
5. Use the DD
DD
D(+) and BB
BB
B(–)
buttons to adjust the hour
and minute hands.
•Each press of the Dbutton
moves the hands 20 seconds
clockwise, while the Bbutton
moves them 20 seconds
counterclockwise.
•Holding down either button
moves the hand at high
speed.
•Note that the 24-hour hand
moves in accordance with
movement of the hour and
minute hands. One full
rotation of the 24-hand is 24
hours. When setting the hour
and minute hands, make sure
that you also keep an eye on
the 24-hour hand to make
sure that you set the analog
time so it correctly matches
the am/pm time on the digital
display.
Hour Hand Minute Hand
(Back)
(Forward)
24-hour hand
Stopwatch 1/20-second Hand
(Forward)
12 o’clock
(Forward)
Stopwatch Minute Hand
12 o’clock
High-speed Lock
•While holding down the Dbutton to start high-speed clockwise
movement of the hands, press the Bbutton to lock the
high-speed movement.
•While holding down the Bbutton to start high-speed
counterclockwise movement of the hands, press the Dbutton to
lock the high-speed movement.
•High-speed movement of the hands will continue until it completes
a 12-hour cycle, or until you press any button to stop it.
6. Press the AA
AA
Abutton to
select the stopwatch
1/20-second hand for
adjustment.