MA1103-EA
Operation Guide 5163 (OC)
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.
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by
you or any third party arising through the use of this product or its malfunction.
Keep the watch exposed to bright light
The electricity generated by the solar cell of the watch is stored by a built-in
Bright Light
battery. Leaving or using the watch where it is not exposed to light causes
the battery to run down. Make sure the watch is exposed to light as much as
possible.
x When you are not wearing the watch on your wrist, position the face so it is
pointed at a source of bright light.
Solar cell
x You should try to keep the watch outside of your sleeve as much as
possible. Charging is reduced significantly if the face is even only partially
covered.
E-1
E-3
E-5
E-7
x The watch continues to operate, even when it is not exposed to light. Leaving the watch in the dark can
cause the battery to run down, which will result in some watch functions to be disabled. If the battery
goes dead, you will have to re-configure watch settings after recharging. To ensure normal watch
operation, be sure to keep it exposed to light as much as possible.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function has turned off the
display to conserve power.
x See “Power Saving Function” (page E-50) for more information.
Battery charges in the light.
Battery discharges in the dark.
Bright Light
Solar cell
(Converts light to
electrical power.)
Electrical
energy
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
LEVEL 1
LEVEL 2
All functions
enabled
Some or all
functions
disabled
LEVEL 3
LEVEL 4
Charge
Discharge
Rechargeable battery
x The actual level at which some functions are disabled depends on the watch model.
x Frequent display illumination can run down the battery quickly and require charging. The following
guidelines give an idea of the charging time required to recover from a single illumination operation.
− Approximately 5 minutes exposure to bright sunlight coming in through a window
− Approximately about 8 hours exposure to indoor fluorescent lighting
x Be sure to read “Power Supply” (page E-36) for important information you need to know when
exposing the watch to bright light.
E-2
About This Manual
Contents
x Depending on the model of your watch, display text appears either as
dark figures on a light background or light figures on a dark background.
All sample displays in this manual are shown using dark figures on a light
background.
x Button operations are indicated using the letters shown in the illustration.
x 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.
E-1
E-8
Getting Acquainted
General Guide
E-10 Radio Controlled Atomic Timekeeping
E-11 To specify your Home City
E-20 To perform manual receive
E-22 To check the latest signal reception results
E-24 World Time
E-25 To view the current time in another time zone
E-25 To toggle a city code time between Standard Time and Daylight Saving Time
E-26 To swap your Home City and World Time City
E-27 Stopwatch
E-28 To measure times with the stopwatch
E-29 Countdown Timer
E-29 To configure countdown start time and auto-repeat settings
E-30 To use the countdown timer
E-31 Alarms
E-31 To set an alarm time
E-33 To turn an alarm on and off
E-33 To turn the Hourly Time Signal on and off
E-4
E-34 Illumination
E-34 To illuminate the display manually
E-35 To turn the auto light switch on and off
E-36 Power Supply
E-42 Timekeeping
E-43 To set the time and date manually
E-46 To change the Daylight Saving Time (summer time) setting
E-47 To specify the Dual Time City
E-48 Correction of Hand Home Positions
E-48 To trigger auto correction of hand home positions
E-49 To adjust the home positions manually
E-50 Reference
E-50 To recover from the sleep state
E-51 To turn Power Saving on and off
E-55 Specifications
E-6
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Operation Guide 5163 (OC)
Approximate Reception Ranges
UK and German Signals
x Signal reception may not be possible at the distances that are further than those noted below during
certain times of the year or day. Radio interference also may cause problems with reception.
− Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles)
− Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
− Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
− Shangqiu (China) transmitter: 1,500 kilometers (910 miles)
North American Signal
2,000 miles
(3,000 kilometers)
Anthorn
x Even when the watch is within the reception range of the transmitter, signal reception will be impossible
if the signal is blocked by mountains or other geological formations between the watch and signal
source.
x Signal reception is affected by weather, atmospheric conditions, and seasonal changes.
x As of September 2009, China does not use Daylight Saving Time (DST). If China does go to the
Daylight Saving Time system in the future, some functions of this watch may no longer operate
correctly.
500 kilometers
600 miles
1,500 kilometers
(1,000 kilometers)
Fort Collins
The Anthorn signal is
receivable within this area.
Mainflingen
Japanese Signals
Fukushima
Chinese Signal
500 kilometers Changchun
500 kilometers
Fukuoka/Saga
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
1,000 kilometers
Signals are receivable in the Taiwan area when
1,500 kilometers
reception conditions are good.
E-16
E-17
About Auto Receive
Auto Receive Start Times
Your Home City
The watch receives the time calibration signal automatically up to six times a day (five times for the China
signal). When any auto receive is successful, remaining auto receive operations are not performed.
The reception schedule (calibration times) depends on your currently selected Home City, and whether
standard time or Daylight Saving Time is selected for your Home City.
1
2
3
4
5
6
HNL
ANC
LAX
DEN
CHI
NYC
YVR
YEA
MEX
MIA
YTO
YHZ
YYT
Auto Receive Start Times
Your Home City
1
2
3
4
5
6
Standard Time and
Midnight
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
*Next day
Daylight Saving Time
LON Standard Time
1:00 am
2:00 am
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
LIS
Daylight Saving Time
PAR
BER
MAD
ROM
STO
Standard Time
Daylight Saving Time
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
Standard Time
Daylight Saving Time
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
Note
ATH
x When a calibration time is reached, the watch will receive the calibration signal only if it is in either the
Timekeeping Mode or World Time Mode. Reception is not performed if a calibration time is reached
while you are configuring settings.
Standard Time
4:00 am
5:00 am
5:00 am
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
3:00 am*
4:00 am*
MOW
Daylight Saving Time
Midnight*
HKG
BJS
x Auto receive of the calibration signal is designed to be performed early in the morning, while you sleep
(provided that the Timekeeping Mode time is set correctly). Before going to bed for the night, remove
the watch from your wrist, and put it in a location where it can receive the signal easily.
x The watch receives the calibration signal for two to 14 minutes everyday when the time in the
Timekeeping Mode reaches a calibration time. Do not perform any button operation within 14 minutes
before or after the calibration times. Doing so can interfere with correct calibration.
x Remember that reception of the calibration signal depends on the current time in your Home City, as
kept in the Timekeeping Mode.
Standard Time
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
TYO
TPE Standard Time
SEL
Midnight
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
E-18
E-19
To perform manual receive
x Time calibration signal reception takes from two to seven minutes, but in
Receive successful
some cases it can take as long as 14 minutes. Take care that you do not
perform any button operations or move the watch during this time.
x When a signal receive operation is successful, GET appears on the upper
display and the lower display shows the time and date of the successful
operation. The watch will adjust its time setting in accordance with the
information provided by the signal.
1. Place the watch on a stable surface so its 12 o’clock side is facing towards
a window (page E-13).
Receiving
2. In the Timekeeping Mode, hold down A for about two seconds until the
watch beeps.
3. The digital display will go blank, and the left dial hand will move to
R (READY). This indicates that the watch is getting ready for time calibration
signal reception.
x The watch will return to the Timekeeping Mode if you press A or if you do
not perform any operation for about one or two minutes.
x See the information under “Signal Reception Troubleshooting” (page
x ERR will appear on the upper display if the receive operation is not
successful. The watch will not adjust its time setting in this case. Press A
E-23) if you experience problems.
Receive failed
to return to the Timekeeping Mode.
x The left dial hand will move to W (WORK) and stay there while actual
reception is in progress.
x If signal reception is unstable during reception, the left dial hand may
move between W (WORK) and R (READY).
R (READY)
Note
W (WORK)
x To interrupt a receive operation and return to the Timekeeping Mode, press
any button.
x The hour and minute hands continue to keep time normally.
E-20
E-21
To check the latest signal reception results
In the Timekeeping Mode, press A to view the last successful receive time and date.
Press A again to return to the previous screen.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
Probable Cause
What you should do
I can’t receive a time
calibration signal.
x You performed some button operation
x Perform manual receive at night or wait
until the next auto receive operation is
performed.
x Enter the Timekeeping Mode or World
Time Mode and try again.
x Enter the Countdown Timer Mode and
stop the countdown (page E-29).
x Check to make sure the watch is in a
location where it can receive the signal
(page E-13).
during auto receive.
x The watch is not in the Timekeeping Mode
or World Time Mode.
x The watch is in a location where the signal
cannot be received for some reason.
x A countdown timer operation is in
progress.
x Radio interference is often present during
the day time, which can interfere with
signal reception.
Date
Hour : Minutes
The time setting is
incorrect following
signal reception.
x If the time is one hour off, the DST setting x Change the DST setting to Auto DST
may be incorrect. (page E-46).
x The Home City code setting is not correct x Select the correct Home City code
for the area where you are using the
watch.
x The home positions of the hands are off.
(page E-11).
x Enter the home position adjustment
mode and adjust the home positions
(page E-48).
x For further information, see “Important!” (page E-13) and “Radio-controlled Atomic Timekeeping
Precautions” (page E-51).
E-22
E-23
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Operation Guide 5163 (OC)
To view the current time in another time zone
In the World Time Mode, use D to scroll through available city codes (time zones).
World Time
Holding down the button scrolls at high speed.
World Time digitally displays the current time in one of 48 cities (29 time zones)
around the world. A simple operation swaps your Home City with the currently
selected World Time City.
Currently selected
World Time City
x When the city code (time zone) you want is selected, you can press A to display the date. After about
one second, the watch will resume regular timekeeping.
x The times kept in the World Time Mode are synchronized with the time being
kept in the Timekeeping Mode. If you feel that there is an error in any World
Time Mode time, check to make sure you have the correct city selected as
your Home City. Also check to make sure that the current time as shown in
the Timekeeping Mode is correct.
Press A.
x Times in the World Time Mode are based on UTC offsets. See the “City
Code Table” at the back of this manual for information about the UTC offsets
that are supported.
One second
x All of the operations in this section are performed in the World Time Mode,
which you enter by pressing C (page E-9).
World Time hour
Hour : Minutes Seconds
Date
To toggle a city code time between Standard Time and Daylight Saving Time
Right Dial Hand
Current time in
World Time City
1. In the World Time Mode, press D to display the city code (time zone)
whose Standard Time/Daylight Saving Time setting you want to change.
The right dial hand shows the current hour in the World Time City in all modes.
x The right dial hand moves once every 12 minutes, and completes one
revolution every 12 hours.
2. Hold down A for about three seconds to toggle between Daylight Saving
Time (DST indicator displayed) and Standard Time (DST indicator not
displayed).
x Between noon and midnight in the World Time Mode, a PM indicator (PM
appears above the right dial hand.
)
PM indicator
DST indicator
E-24
E-25
Swapping your Home City and World Time City
Stopwatch
You can use the procedure below to swap your Home City and World Time City. This changes your Home
City to your World Time City, and your World Time City to your Home City. This capability can come in
handy when you frequently travel between two cities in different time zones.
x If your current World Time City supports receipt of a time calibration signal, making it your Home City
enables calibration signal reception.
The stopwatch lets you measure elapsed time, split times, and two
finishes.
x The digital display range of the stopwatch is 23 hours, 59 minutes,
59.99 seconds.
Hours
x The stopwatch continues to run, restarting from zero after it
reaches its limit, until you stop it.
x The stopwatch measurement operation continues even if you exit
the Stopwatch Mode.
x For information about which cities support time calibration signal reception, see “To specify your Home
City” (page E-11).
To swap your Home City and World Time City
x Exiting the Stopwatch Mode while a split time is frozen on
the display clears the split time and returns to elapsed time
measurement.
x All of the operations in this section are performed in the Stopwatch
Mode, which you enter by pressing C (page E-9).
1. In the World Time Mode, use D to select the World Time City you want.
2. Hold down A and B until the watch beeps.
SPL indicator
1/100 second
Seconds
Minutes
x This will make the World Time City you selected in step 1 your new Home City, and cause the hour and
minute hands to move to the current time in that city. At the same time, the Home City you had selected
prior to step 2 will become your new World Time City. The content of the upper and lower displays will
change accordingly.
x After swapping the Home City and World Time City, the watch stays in the World Time Mode with the
city that was selected as the Home City prior to step 2 now displayed as the World Time City.
E-26
E-27
To measure times with the stopwatch
Countdown Timer
Elapsed Time
You can set the countdown timer start time within a range of one minute to 60 minutes. An alarm sounds
when the countdown reaches zero.
x You also can select auto-repeat, which automatically restarts the countdown from the original value you
set whenever zero is reached.
D
D
D
D
A
Start
Stop
Re-start
Stop
Clear
x All of the operations in this section are performed in the Countdown Timer Mode, which you enter by
pressing C (page E-9).
Split Time
D
A
A
D
A
To configure countdown start time and auto-repeat settings
Start
Split
Split release
Stop
Clear
1. While the countdown start time is on the display in the Countdown Timer
Mode, hold down A for about three seconds until the minute setting of the
countdown start time starts to flash. This is the setting mode.
(SPL indicator
displayed)
x If the countdown start time is not displayed, use the procedure under “To
use the countdown timer” (page E-30) to display it.
Two Finishes
D
A
D
A
A
2. Press C to move the flashing in the sequence shown below, and select the
setting you want to change.
Start
Split
Stop
Split release
Display time of
second runner.
Clear
First runner finishes. Second runner
C
Display time of first
runner.
finishes.
Start Time (Minutes)
Auto-Repeat On/Off
Start time (minutes)
3. Perform the following operations, depending on which setting currently is selected on the display.
x While the start time setting is flashing, use D (+) and B (–) to change it.
x While the auto-repeat on/off setting (0N or 0FF) is flashing on the display, press D to toggle
auto-repeat on (0N) and off (0FF).
E-28
E-29
4. Press A to exit the setting mode.
x The auto-repeat on indicator ( ) will appear in the upper display while this function is turned on.
x Frequent use of auto-repeat and the alarm can run down battery power.
Alarms
When an alarm is turned on, the alarm tone will sound when its alarm time
Alarm number
is reached. One of the alarms is a snooze alarm, while the other four are
one-time alarms.
To use the countdown timer
You also can turn on an Hourly Time Signal that causes the watch to beep
twice every hour on the hour.
Press D while in the Countdown Timer Mode to start the countdown timer.
x When the end of the countdown is reached and auto-repeat is turned off, the
auto-repeat on indicator
x There are five alarm screens numbered
,
,
and
SNZ
AL1 AL2 AL3
for the one-time alarm, and a snooze alarm screen indicated by
AL4
. The
alarm will sound for 10 seconds or until you stop it by pressing any button.
The countdown time is reset to its starting value automatically after the alarm
stops.
Start time (minutes)
Hourly Time Signal screen is indicated by
.
SIG
x All of the operations in this section are performed in the Alarm Mode, which
you enter by pressing C (page E-9).
x When auto-repeat is turned on, the countdown will restart automatically
without pausing when it reaches zero. The alarm sounds to signal when the
countdown reaches zero. The countdown is repeated up to eight times, and
then stops.
x The number of the current repeat (1 to 8) is shown in the lower display.
x The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
Alarm time
(Hour : Minutes)
To set an alarm time
1. In the Alarm Mode, use D to scroll through the alarm screens until the one
whose time you want to set is displayed.
x To stop a countdown timer operation completely, first pause it (by pressing
D), and then press A. This returns the countdown time to its starting value.
Minutes
Seconds
x To set a one-time alarm, display alarm screen
,
,
AL1 AL2 AL3
or
Number of the current
repeat
. To set the snooze alarm, display the
screen.
AL4
SNZ
x
is the hourly time signal setting (page E-33).
SIG
x The snooze alarm repeats every five minutes.
E-30
E-31
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Operation Guide 5163 (OC)
To turn an alarm on and off
2. After you select an alarm, hold down A for about three seconds until the hour setting of the alarm time
starts to flash. This is the setting mode.
x This operation turns on the alarm automatically.
1. In the Alarm Mode, use D to select an alarm.
Alarm on indicator
2. Press A to toggle it on (on) and off (- -).
Snooze alarm indicator
3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.
5. Press A to exit the setting mode.
x Turning on an alarm (
,
,
,
or
)
AL1 AL2 AL3 AL4 SNZ
displays the alarm on indicator on its Alarm Mode screen.
x In all modes, the alarm on indicator is shown for any alarm that
currently is turned on.
x The alarm on indicator flashes while the alarm is sounding.
x The snooze alarm indicator flashes while the snooze alarm is
sounding and during the 5-minute intervals between alarms.
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the watch is in. In the
case of the snooze alarm, the alarm operation is performed a total of seven times, every five minutes, or
until you turn the alarm off (page E-33).
x Alarm and Hourly Time Signal operations are performed in accordance with the current time in your
ON
To turn the Hourly Time Signal on and off
Home City, as kept in the Timekeeping Mode.
x To stop the alarm tone after it starts to sound, press any button.
x Performing any one of the following operations during a 5-minute interval between snooze alarms
cancels the current snooze alarm operation.
1. In the Alarm Mode, use D to select the Hourly Time Signal (
(page E-31).
)
SIG
Hourly time signal on indicator
Displaying the Timekeeping Mode setting screen (page E-43)
Displaying the
setting screen (page E-31)
SNZ
2. Press A to toggle it on (on) and off (- -).
x The Hourly Time Signal on indicator is shown on the display in all
modes while this function is turned on.
E-32
E-33
Illumination
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.
x Wear the watch on the outside of your wrist.
An LED (light-emitting diode) illuminates the face of the watch for easy reading
in the dark. The watch’s auto light switch turns on illumination automatically
when you angle the watch towards your face.
Auto light switch
on indicator
x The auto light switch must be turned on (indicated by the auto light switch
on indicator) for it to operate.
x See “Illumination Precautions” (page E-54) for other important information
about using illumination.
Parallel to
More than 40°
ground
To illuminate the display manually
In any mode (except a setting mode), press B to turn on the illumination for
about one second.
Warning!
x The above operation turns on illumination regardless of the current auto light
switch setting.
x 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.
About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as
described below in any mode.
Note that this watch features a “Full Auto LED Light”, so the auto light switch operates only when available
light is below a certain level. It does not illuminate the display under bright light.
x The auto light switch is always disabled, regardless of its on/off setting, when any one of the following
conditions exists.
Also take care that sudden illumination by the auto light switch does not startle or distract
others around you.
x When you are wearing the watch, make sure that its auto light switch is turned off before riding 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 turn the auto light switch on and off
− While an alarm is sounding
− While a signal receive operation is in progress
In the Timekeeping Mode, hold down B for about three seconds to toggle the auto light switch on (auto
light switch on indicator displayed) and off (auto light switch on indicator not displayed).
x The auto light switch on indicator is on the display in all modes while the auto light switch is turned on.
E-34
E-35
Important!
Power Supply
x Storing the watch for long periods in an area where there is no light or wearing it in such a way that it
is blocked from exposure to light can cause rechargeable battery power to run down. Be sure that the
watch is exposed to bright light whenever possible.
x This watch uses a special rechargeable battery to store power produced by the solar cell, so regular
battery replacement is not required. However, after very long use, the rechargeable battery may lose
its ability to achieve a full charge. If you experience problems getting the special rechargeable battery
to charge fully, contact your dealer or CASIO distributor about having it replaced.
x Never try to remove or replace the watch’s special battery yourself. Use of the wrong type of battery
can damage the watch.
x All data stored in memory is deleted, and the current time and all other settings return to their initial
factory defaults whenever battery power drops to Level 5 (C: Charge) (page E-38) and when you have
the battery replaced.
x Turn on the watch’s Power Saving function (page E-51) and keep it in an area normally exposed to
bright light when storing it for long periods. This helps to keep the rechargeable battery from going
dead.
This watch is equipped with a solar cell and a special rechargeable battery (secondary battery) that is
charged by the electrical power produced by the solar cell. The illustration shown below shows how you
should position the watch for charging.
Example:
Solar cell
Orient the watch so its face is pointing at a light source.
x The illustration shows how to position a watch with a
resin band.
x Note that charging efficiency drops when any part of the
solar cell is blocked by clothing, etc.
x You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly
if the face is even only partially covered.
E-36
E-37
x The flashing
indicator at Level 3 (L) tells you that battery power is very low, and that exposure
Battery Power Indicator and Power Recovery Mode indicator
LOW
to bright light for charging is required as soon as possible.
The battery power indicator indicates you the current status of the rechargeable battery’s power.
x At Level 5 (C: Charge), all functions are disabled and settings return to their initial factory defaults.
Once the battery reaches Level 2 (M) after falling to Level 5 (C: Charge), reconfigure the current time,
date, and other settings.
Battery Power indicator
Level
Battery Power Indicator
Function Status
x Display indicators reappear as soon as the battery is charged from Level 5 (C: Charge) to Level 2 (M).
x The watch’s Home City code setting will change automatically to TYO (Tokyo) whenever the battery
drops to Level 5 (C: Charge). With this Home City code setting, the watch is configured to receive the
time calibration signals of Japan. If you are using the watch in North America or Europe, or China you
will need to change the Home City code setting to match your location whenever the battery drops to
Level 5 (C: Charge).
x Leaving the watch exposed to direct sunlight or some other very strong light source can cause the
battery power indicator to show a reading temporarily that is higher than the actual battery level. The
correct battery level should be indicated after a few minutes.
1 (H)
All functions enabled
2 (M)
3 (L)
All functions enabled
Auto and manual receive,
illumination, and beeper disabled
x Overuse of display illumination or the beeper can cause the RECOV
Power recovery
(Recover) indicator to appear in the upper display, which indicates that
mode indicator
the watch is in the battery power recovery mode. Face illumination, the
(Charge Soon Alert)
alarm, the countdown timer alarm, time signals, and all hand operations are
disabled in the power recovery mode.
Except for timekeeping, all
functions and display indicators
disabled
4 (C: Charge)
5 (C: Charge)
The watch continues to keep time internally, so regular timekeeping and
function will resume as soon as battery power recovers to normal levels,
which is indicated when the RECOV indicator disappears.
x If RECOV appears frequently, it probably means that remaining battery
power is low. Leave the watch in bright light for some time to allow it to
charge.
All functions disabled
E-38
E-39
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Operation Guide 5163 (OC)
x For details about the battery operating time and daily operating conditions, see the “Power Supply”
Charging Precautions
section of the Specifications (page E-56).
Certain charging conditions can cause the watch to become very hot. Avoid leaving the watch in the areas
described below whenever charging its rechargeable battery.
x Stable operation is promoted by frequent exposure to light.
Also note that allowing the watch to become very hot can cause its liquid crystal display to black out. The
appearance of the LCD should become normal again when the watch returns to a lower temperature.
Recovery Times
The table below shows the amount exposure that is required to take the battery from one level to the next.
Warning!
Approximate Exposure Time
Leaving the watch in bright light to charge its rechargeable battery can cause it to become quite
hot. Take care when handling the watch to avoid burn injury.
The watch can become particularly hot when exposed to the following conditions for long periods.
ꢀ On the dashboard of a car parked in direct sunlight
ꢀ Too close to an incandescent lamp
Level 5
Level 4
Level 3
Level 2
Level 1
Exposure Level (Brightness)
Outdoor sunlight (50,000 lux)
2 hours
6 hours
21 hours
78 hours
6 hours
Sunlight through a window
(10,000 lux)
ꢀ Under direct sunlight
21 hours
Daylight through a window on a
cloudy day (5,000 lux)
Charging Guide
10 hours
126 hours
– – –
34 hours
– – –
After a full charge, timekeeping remains enabled for up to about six months.
x The following table shows the amount of time the watch needs to be exposed to light each day in order
to generate enough power for normal daily operations.
Indoor fluorescent lighting (500 lux)
106 hours
x The above exposure time values are all for reference only. Actual required exposure times depend on
lighting conditions.
Exposure Level (Brightness)
Approximate Exposure Time
8 minutes
Outdoor sunlight (50,000 lux)
Sunlight through a window (10,000 lux)
Daylight through a window on a cloudy day (5,000 lux)
Indoor fluorescent lighting (500 lux)
30 minutes
48 minutes
8 hours
E-40
E-41
Read This Before You Set the Time and Date!
Timekeeping
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 first 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.
x Note that all of the times for the World Time City codes (page E-24) and Dual Time City (page E-47) are
displayed in accordance with the time and date settings you configure for the Timekeeping Mode.
You can adjust the Home City time and date in the Timekeeping Mode manually.
You also can simultaneously display the current time in one other time zone, by specifying a Dual Time
City.
x For information about selecting a Dual Time City, see “To specify the Dual Time City” (page E-47).
x Pressing D in the Timekeeping Mode will cycle the lower display between the screens shown below.
Home City Date
Home City Time
Dual Time
To set the time and date manually
1. In the Timekeeping Mode, hold down A for about five seconds until the left
dial hand points to T1 and the city code flashes on the upper display. This is
the setting mode.
D
D
2. Use D and B to select the city code you want.
x Make sure you select your Home City code before changing any other
setting.
x For full information on city codes, see the “City Code Table” at the back
of this manual.
3. Press C to change the flashing screen content in the sequence shown below to select the other
settings.
D
City Code
DST
Day
12/24-Hour Format
Month
Seconds
Year
Hour
Power Saving
Minutes
E-42
E-43
4. When the timekeeping setting you want to change is flashing, use D or B to change it as described
x Auto DST (
) can be selected only while
,
,
,
,
,
,
STO ATH MOW TPE SEL TYO HNL ANC YVR LAX YEA DEN
LIS LON MAD PAR ROM BER
,
below.
,
,
,
,
,
,
,
YYT
,
,
,
,
,
,
,
,
,
, or
is selected as the Home City code. For
MEX CHI MIA YTO NYC YHZ
Screen:
To do this:
Do this:
more information, see “Daylight Saving Time (DST)” below.
x The day of the week is displayed automatically in accordance with the date (year, month, and day)
Change the city code.
Use D (east) and B (west).
settings.
Cycle between Auto DST (
), Daylight Saving
Press D.
Time (
) and Standard Time ( ).
12-hour and 24-hour timekeeping
Toggle between 12-hour (
timekeeping.
) and 24-hour (
)
x With the 12-hour format, the PM (PM) indicator appears to the left of the hour digits for times in the
range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m.
x With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator.
x The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other
modes.
Press D.
Press D.
Reset the seconds to
.
Change the hour and minutes.
Change the year, month, or day.
Use D (+) and B (–).
Press D.
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.
The time calibration signals transmitted from Mainflingen (Germany), Anthorn (England), and Fort Collins
(the United States) include both Standard Time and DST data. When the Auto DST setting is turned on,
the watch switches between Standard Time and DST (Daylight Saving Time) automatically in accordance
with the signals.
Toggle between Power Saving on ( ) and off (
).
5. Press A twice to exit the setting mode.
x For details about the Daylight Saving Time setting, see “To change the Daylight Saving Time
(summer time) setting” (page E-46). For information about Power Saving, see “To turn Power Saving
on and off” (page E-51).
x Though the time calibration signals transmitted by the Fukushima and Fukuoka/Saga, Japan
transmitters include summer time data, summer time currently is not implemented in Japan (as of
2010).
E-44
E-45
x The default DST setting is Auto DST (
) whenever you select
,
,
,
,
Dual Time
LIS LON MAD PAR
,
,
,
,
,
,
,
,
,
,
,
,
ROM BER STO ATH MOW TYO ANC YVR LAX YEA DEN MEX
, or as your Home City code.
Dual Time lets you display the current time in another time zone called your “Dual Time City”, in addition
to your Home City’s current time. This feature is very handy for business professionals and others who
need to keep track of the current time in two different time zones.
x For information about how to display the current time in the Dual Time City in the lower display, see
page E-42.
,
,
,
,
CHI MIA YTO NYC YHZ
YYT
x If you experience problems receiving the time calibration signal in your area, it probably is best to
switch between Standard Time and Daylight Saving Time (summer time) manually.
To change the Daylight Saving Time (summer time) setting
To specify the Dual Time City
1. In the Timekeeping Mode, hold down A for about five seconds until the left
dial hand points to T1 and the city code flashes on the upper display. This is
the setting mode.
1. In the Timekeeping Mode, hold down A for about five seconds until the left
dial hand points to T1 and the city code flashes on the upper display. This is
Currently selected
Dual Time City
the setting mode.
2. Press C. This will display the DST setting screen.
2. Press A again. The left dial hand will move to T2 and the current Dual Time
City code will start to flash on the upper display. This is the Dual Time City
selection screen.
3. Use D to cycle through the DST settings in the sequence shown below.
Auto DST (
)
DST off (
)
DST on (
)
3. Use D (east) and B (west) to scroll through the available city codes.
x See the “City Code Table” at the back of this manual for information about
city codes.
DST indicator
4. When the setting you want is selected, press A twice to exit the setting mode.
x The DST indicator appears to indicate that Daylight Saving Time is turned on.
4. Press A to exit the setting mode.
Left dial hand
E-46
E-47
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Operation Guide 5163 (OC)
To adjust the home positions manually
Correction of Hand Home Positions
1. In the Timekeeping Mode, hold down D for about three seconds, until
H-SET appears on the upper display and Sub starts to flash on the lower
display.
x The dial hands are in their correct home positions when the long left dial
hand moves to C (Charge) and the right dial hand moves to 12. If they
don’t, use B to adjust the left dial hand position and D to adjust the right
dial hand position.
The hour and minute hands of the watch can be thrown off by exposure to strong magnetism or impact.
The watch is designed to perform hour and minute hand correction automatically every hour in order to
correct variation within the range of –55 minutes to +5 minutes.
x You can trigger auto hour and minute hand position correction manually, if you want (page E-48).
x If the variation is greater than –55 minutes to +5 minutes, you can trigger auto hand position correction
manually or perform correction of the hour and minute hand home positions manually (page E-49).
x If the dial hands are off, you will need to correct their home positions manually (page E-49).
Correct dial hand
positions
2. After confirming that both dial hands are in their correct home positions,
press C.
x This will change to hour hand and minute hand home position manual
correction.
x The hour and minute hands are in their correct home positions if they
are at 12 o’clock. If they are not, use D (+) and B (–) to adjust their
positions as required.
To trigger auto correction of hand home positions
In the Timekeeping Mode, hold down D for about six seconds, until H-SET
starts flashing on the upper display.
x Note that H-SET will appear on the upper display about three seconds after
you depress D, but you should not release the button until H-SET starts
flashing. The flashing H-SET indicates that auto hour and minute hand home
position correction has started.
Correct hour and minute
hand positions
x Pressing C here will return to the setting at the beginning of step 2.
x Auto hour and minute hand home position correction takes about three and
a half minutes to complete. Do not perform any other watch operation during
that time.
3. After everything is the way you want, press A to return to the Timekeeping
Mode.
x After you complete the home position adjustment procedure, place the
watch in a location that allows for good time calibration signal reception,
and then perform a manual receive operation. See “To perform manual
receive” (page E-20) for more information.
x The watch will return to the Timekeeping Mode automatically after auto correction is complete.
x You will not be able to trigger auto correction while the watch is in the Countdown Timer Mode or while
a countdown timer operation is in progress.
x To interrupt an ongoing auto correction, press D. This will return to the Timekeeping Mode.
E-48
E-49
To turn Power Saving on and off
Reference
1. In the Timekeeping Mode, hold down A for about five seconds until the left
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.
dial hand points to T1 and the city code flashes on the upper display. This is
the setting mode.
2. Press C nine times until PS appears in the upper display and a flashing or
Power Saving Function
appears in the lower display. This is the Power Saving
/
screen.
When turned on, the Power Saving function enters a sleep state automatically
whenever the watch is left in an area for a certain period where it is dark. The
table below shows how watch functions are affected by the Power Saving
function.
3. Press D to toggle Power Saving on (
4. Press A twice to exit the setting mode.
) and off (
).
On/Off status
Elapsed Time in Dark Hands and Display
Left dial hand: PS; Right dial
Operation
All functions enabled,
except for displays
60 to 70 minutes
hand: “12”; Other hands:
Radio-controlled Atomic Timekeeping Precautions
x Strong electrostatic charge can cause the time setting to be thrown off.
x The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in
the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to
seasonal atmospheric changes or the time of day may change the reception range of the signal and
make reception temporarily impossible.
x Even if the time calibration signal is received properly, certain conditions can cause the time setting to
be off by up to one second.
x The current time setting in accordance with the time calibration signal takes priority over any time
settings you make manually.
x The watch is designed to update the date and day of the week automatically for the period January 1,
2000 to December 31, 2099. Setting of the date by the time calibration signal cannot be performed
starting from January 1, 2100.
Normal; Display: Blank
Left dial hand: PS; Other
Auto receive, beeper tone,
6 or 7 days
hands: Stopped at 12 o’clock; illumination, and display
Display: Blank
disabled
x Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
x The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If the watch is already in the
sleep state when 6:00 AM arrives, however, it will remain in the sleep state.
To recover from the sleep state
Perform any one of the following operations.
x Move the watch to a well-lit area.
x Press any button.
x This watch can receive signals that differentiate between leap years and non-leap years.
x Angle the watch towards your face for reading (page E-35).
E-50
E-51
x Though this watch is designed to receive both time data (hour, minutes, seconds) and date data (year,
month, day), certain signal conditions can limit reception to time data only.
x If you are in an area where proper time calibration signal reception is impossible, the watch keeps the
time with the precision noted in “Specifications”.
x If you have problems with proper time calibration signal reception or if the time setting is wrong after
signal reception, check your current city code, and DST (Daylight Saving Time) settings (page E-46).
Auto Return Features
x If you leave the watch with a flashing setting on the display for two or three minutes without performing
any operation, the watch will exit the setting mode automatically.
x The watch will return to the Timekeeping Mode automatically if you do not perform any operation for
two or three minutes in the Alarm Mode.
x The Home City setting reverts to the initial default of
(Tokyo) whenever the battery power drops
TYO
High-Speed Movement
x The D and B buttons are used to change the hand setting in various setting modes. In most cases,
holding down these buttons will start high-speed movement of the applicable hand(s).
to Level 5 (C: Charge) or when you have the rechargeable battery replaced. If this happens, change
the Home City to the setting you want (page E-11).
Transmitters
Initial Screens
The time calibration signal received by this watch depends on the currently selected Home City (page
E-11).
x When a U.S. time zone is selected, the watch receives the time calibration signal transmitted from the
United States (Fort Collins).
x When a Japanese time zone is selected, the watch receives the time calibration signals transmitted
from Japan (Fukushima and Fukuoka/Saga).
x When a European time zone is selected, the watch receives the time calibration signals transmitted
from Germany (Mainflingen) and England (Anthorn).
When you enter the World Time Mode or Alarm Mode, the data you were viewing when you last exited the
screen will appear first.
Timekeeping
x Resetting the seconds to
be increased by 1. In the range of 00 to 29, the seconds are reset to
while the current count is in the range of 30 to 59 causes the minutes to
without changing the minutes.
x The year can be set in the range of 2000 to 2099.
x 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 when battery power drops
to Level 5 (C: Charge) (page E-38).
x The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in
accordance with the Coordinated Universal Time (UTC) for each city, based on your Home City time
setting.
x When a China time zone is selected, the watch receives the time calibration signal transmitted from
China (Shangqiu City).
x When your Home City is LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW (which can receive
both the Anthorn and Mainflingen signals), the watch first tries to pick up the signal it last received
successfully. If that fails, it tries the other signal. For the first receive after you select your Home City,
the watch tries the nearest signal first (Anthorn for LIS, LON, Mainflingen for MAD, PAR, ROM, BER,
STO, ATH, and MOW).
E-52
E-53
Illumination Precautions
Specifications
x Illumination may be hard to see when viewed under direct sunlight.
x Illumination turns off automatically whenever an alarm sounds.
x Frequent use of illumination runs down the battery.
Accuracy at normal temperature: 15 seconds a month (with no signal calibration)
Digital Timekeeping: Hour, minutes, seconds, p.m. (PM), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 48 city codes); Standard Time/Daylight Saving Time
(summer time); Simultaneous Home Time City/Dual Time City indication
Auto light switch precautions
x Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate
when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your
wrist, turn off the auto light switch feature.
Analog Timekeeping: Hour, minutes (hand moves every 10 seconds)
Time Calibration Signal Reception: Auto receive 6 times a day (Remaining auto receives cancelled as
soon as one is successful) (five times for the China signal); Manual
receive
x Illumination may not turn on if the face of the watch is more than 15 degrees
More than 15 degrees
too high
above or below parallel. Make sure that the back of your hand is parallel to the
ground.
Receivable Time Calibration Signals: Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5 kHz);
Anthorn, England (Call Sign: MSF, Frequency: 60.0 kHz);
Fort Collins, Colorado, the United States (Call Sign: WWVB,
Frequency: 60.0 kHz); Fukushima, Japan (Call Sign: JJY,
Frequency: 40.0 kHz); Fukuoka/Saga, Japan (Call Sign: JJY,
Frequency: 60.0 kHz); Shangqiu City, Henan Province, China
(Call Sign: BPC, Frequency: 68.5 kHz)
x Illumination turns off in about one second, even if you keep the watch pointed
towards your face.
x 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 toward you
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.
World Time: 48 cities (29 time zones)/and Coordinated Universal Time
x Under certain conditions, illumination may not turn on until about one second after you turn the face of
the watch towards you. This does not necessarily indicate malfunction of the auto light switch.
x 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.
Other: Daylight Saving Time/Standard Time; Home City/World Time City Swapping
Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 23:59' 59.99"
Measuring modes: Elapsed time, split time, two finishes
E-54
E-55
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Operation Guide 5163 (OC)
Countdown Timer:
Measuring unit: 1 second
Input range: 1 minute to 60 minutes (1-minute increments)
Other: Auto-repeat timing
Alarms: Four one-time alarms; one snooze alarm; Hourly Time Signal
Illumination: LED (light-emitting diode); Auto Light Switch (Full Auto LED Light operates only in the dark)
Other: Power Saving; Auto hour and minute hand home position correction each hour
Power Supply: Solar cell and one rechargeable battery
Approximate battery operating time: 6 months (from full charge to Level 5 (C: Charge)) under the
following conditions:
– Watch not exposed to light
– Internal timekeeping
– Display on 18 hours per day, sleep state 6 hours per day
– 1 illumination operation (1.5 seconds) per day
– 10 seconds of alarm operation per day
City Code Table
– 4 minutes of signal reception per day
Frequent use of illumination runs down the battery. Particular care is required when using the auto light
switch (page E-55).
E-56
L-1
City Code Table
x ꢁBased on data as of July 2010.
UTC Offset/
UTC Offset/
UTC Offset/
City Code
City
City Code
City
City Code
City
GMT Differential
GMT Differential
GMT Differential
x ꢁThe rules governing global times (UTC offset
and GMT differential) and summer time are
determined by each individual country.
PPG
HNL
ANC
YVR
LAX
YEA
DEN
MEX
CHI
Pago Pago
Honolulu
Anchorage
Vancouver
Los Angeles
Edmonton
Denver
–11
–10
–9
UTC
LIS
DEL
DAC
RGN
BKK
SIN
Delhi
Dhaka
+5.5
+6
Lisbon
London
Madrid
Paris
0
LON
MAD
PAR
ROM
BER
STO
ATH
CAI
Yangon
Bangkok
Singapore
Hong Kong
Beijing
+6.5
+7
–8
–7
–6
Rome
+1
HKG
BJS
+8
Berlin
Mexico City
Chicago
Stockholm
Athens
Cairo
TPE
Taipei
SEL
Seoul
+9
MIA
YTO
NYC
SCL
YHZ
YYT
RIO
Miami
+2
+3
TYO
ADL
GUM
SYD
NOU
WLG
Tokyo
Toronto
–5
–4
JRS
Jerusalem
Moscow
Jeddah
Tehran
Dubai
Adelaide
Guam
+9.5
+10
New York
Santiago
Halifax
MOW
JED
THR
DXB
KBL
KHI
Sydney
Noumea
Wellington
+3.5
+4
+11
+12
St. Johns
Rio De Janeiro
Praia
–3.5
–3
Kabul
+4.5
+5
RAI
–1
Karachi
L-2
L-3
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