Casio 5046 User manual

Operation Guide 5046
1
MO0905-A
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.
Keep the watch exposed to bright light
The electricity generated by the solar cell of the watch is
stored by a built-in 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.
•When you are not wearing the watch on your wrist,
position the face so it is pointed at a source of bright
light.
•You should try to keep the watch outside of your sleeve
as much as possible. Even if the face of the watch is
blocked only partially from light, charging will be reduced
significantly.
l
l
l
l
l
l
l
l
l
l
l
Bright light
Solar cell
•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.
Battery charges in the light. Battery discharges in the dark.
Bright light
Electrical
energy
All
functions
enabled.
LEVEL 1
LEVEL 2
Charge
Solar cell
(Converts light to
electrical power.)
Rechargeable battery
LEVEL 1
LEVEL 2
Some
functions
disabled.
Dis-
charge
•The actual level at which some functions are disabled depends on the watch model.
•Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
If the analog hands aren’t moving...
If the analog hands aren’t moving, it means that the power saving mode has stopped
them to save battery power.
•See “Power Saving” for more information.
•The hands also stop when the watch’s battery runs down.
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.
About This Manual
•Button operations are indicated using the letters shown
in the illustration.
•Each section of this manual provides you with the
information you need in order to perform operations in
each mode. Further details and technical information
can be found in the “Reference” section.
Manual Receive
Transmitter Change
Time/Date Adjustment
Receive Status Check
Timekeeping Mode
Press any button.
Hold down Afor
about two seconds.
Hold down A
for about five seconds.
Press A.
▲
▲
Press A.
▲
▲
▲
▲
General Guide
Home Time
Zone Check
Timekeeping
Mode
▲
Press D.
Press Dor perform
no operation for two
seconds.
▲
Press A.
Home Position
Adjustment Mode (Manual)
Hand Home Position
Adjustment Mode (Auto)
Hold down Bfor about three seconds
(until second hand completes one revolution).
Hold down Bfor about six
seconds (until second hand
completes two revolutions).
Press B.
▲
▲
▲
▲
•If you lose your place during the above operation, hold down C(at any time except
in the Hand Home Position Adjustment Mode (Auto)) to return to the Timekeeping
Mode.
Radio-controlled Atomic Timekeeping
This watch adjusts its time setting automatically in accordance with a time calibration
signal. You also can perform a manual procedure to set the time and date, when
necessary.
•This watch is designed to pick up the time calibration signals transmitted in Germany
(Mainflingen), England (Anthorn), the United States (Fort Collins), China (Shangqiu),
and Japan (Fukushima, Fukuoka/Saga).
•The U.S. time calibration signal can be picked up by the watch while in North
America. The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
•See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
Current Time Setting
The first thing you should do after purchasing this watch is to specify your
Home Time Zone (the time zone where you normally will use the watch). For
more information, see “To specify your Home Time Zone” below.
•When using the watch outside the areas covered by the time signal transmitters, you
will have to adjust the current time setting manually as required. See
“Timekeeping”
for more information about manual time settings.
•If you lose your place during the following operation, hold down Cto return to the
Timekeeping Mode.
To specify your Home Time Zone
1. In the Timekeeping Mode, hold down Afor about five
seconds until the second hand moves in sequence to
Y(YES) or N(NO), R(READY) or W(WORK), and then
the current Home Time Zone.
•This indicates the Home Time Zone setting mode.
2. Use D(+) to move the second hand until it is pointing
at the Home Time Zone you want to select.
+8 (CN): Hong Kong
+9 (JP) : Tokyo
–8(US) : Los Angeles
–7(US) : Denver
–6(US) : Chicago
–5(US) : New York
+0 (EU) : London
+1 (EU) :Paris
+2 (EU) :Athens
FREE : Time calibration signal reception not performed.
Second hand
Time Zone
3. To exit the setting mode, press A.
•Normally, your watch should show the correct time as soon as you specify your
Home Time Zone. If it does not, it should adjust automatically after the next auto
receive operation (in the middle of the night). You also can perform manual receive
or you can set the time manually.
•Time calibration reception is not performed while “FREE” is selected for the Home
Time Zone, so you will need to set the time manually. If you want signal reception to
be performed, select a time zone other than “FREE”.
•The watch will receive the time calibration signal automatically from the applicable
transmitter (in the middle of the night) and update its settings accordingly. For
information about the relationship between time zones and transmitters, see
“Important!” under “Time Calibration Signal Reception” and “Transmitters”.
•See the maps under “Approximate Reception Ranges” for information about the
reception ranges of the watch.
•Even if the time calibration signal is received correctly, there may be times when the
analog hands may not indicate the correct time. If this happens, use the procedures
under “Adjusting the Home Positions” to check the home positions of the hands, and
make adjustments as required.
To check current Home Time Zone setting
In the Timekeeping Mode, press D.
•This will cause the second hand to move to the currently selected Home Time Zone.
•The second hand will resume normal timekeeping after about two seconds or if you
press Dagain.
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), or Fort Collins (the United States) include both standard time and summer
time (DST) data. When the watch is able to receive a signal from any one of these
transmitters, it will adjust time automatically in accordance with standard time or
summer time (DST).
•While “FREE” is selected as the Home Time Zone or if you are in an area where
signal reception is impossible, you will need to set the time ahead one hour for
summer time (DST) and back one hour for standard time as required. See “To set
the time and date manually” for more information.

Operation Guide 5046
2
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.
•Auto Receive
When Auto Receive is enabled, the watch will receive the applicable time calibration
signal up to six times a day (five times for the China signal).
When any auto receive is successful, the remaining auto receive operations are not
performed. For more information, see “About Auto Receive”.
•Manual Receive
Manual receive lets you start a time calibration receive operation with the press of a
button. For more information, see “To perform manual receive”.
Important!
•When getting ready to receive the time calibration signal, position the watch as
shown in the nearby illustration, with its 12 o’clock side facing towards a window.
This watch is designed to receive a time calibration signal late at night. Because of
this, you should place the watch near a window as shown in the illustration when you
take it off at night. Make sure there are no metal objects nearby.
12 o’clock
or
•Make sure the watch is facing the right way.
Inside or
among
buildings
Inside a
vehicle
Near a
construction
site, airport,
or other
sources of
electrical
noise
Near high-
tension power
lines
Among or
behind
mountains
Near
household
appliances,
office
equipment,
or a mobile
phone
•Proper signal reception can be difficult or even impossible under the conditions listed
below.
•Signal reception normally is better at night than during the day.
•Time calibration signal reception takes from two to seven minutes, but in 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.
Home Time Zones
+0,+1,+2
+8
+9
–8,–7,–6,–5
Frequency
60.0 kHz
77.5 kHz
68.5 kHz
40.0 kHz
60.0 kHz
60.0 kHz
Transmitter
Anthorn (England)
Mainflingen (Germany)
Shangqiu City (China)
Fukushima (Japan)
Fukuoka/Saga (Japan)
Fort Collins, Colorado
(the United States)
•The time calibration signal the watch will attempt to pick up depends on its current
Home Time Zone setting as shown below. If you use the watch in Japan or Europe
(each of which has two different transmitter locations), it will try to receive the time
calibration signal from one of the transmitters in your current location. If it cannot
receive the signal, it will then try to receive the time calibration signal from the other
transmitter.
Home Time Zones and Transmitters
Approximate Reception Ranges
2,000 miles
(3,000 kilometers)
U.K. and German Signals
Anthorn Mainflingen
1,500 kilometers
500 kilometers
The Anthorn signal is
receivable within this
area.
U.S. Signal
Fort Collins
600 miles
(1,000 kilometers)
Signals are receivable in the Taiwan area when reception conditions are good.
Japan Signals
1,000 kilometers
1,000 kilometers
Fukuoka/Saga
500 kilometers
Fukushima
500 kilometers
500 kilometers
Changchun
Beijing
1,500 kilometers
China Signal
Shanghai
Hong Kong
Shangqiu
Chengdu
•Signal reception may not be possible up to the distances noted below during certain
times of the year or day. Radio interference may also 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: 1500 kilometers (910 miles)
•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.
•Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
•See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
About Auto Receive
When Auto Receive is enabled, the watch will receive the applicable time calibration
signal up to six times a day (five times for the China signal). When any auto receive is
successful, the remaining auto receive operations are not performed. The reception
schedule (calibration times) depends on your currently selected Home Time Zone.
Your Home Time Zone Auto Receive Start Times
123456
+0
Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight*
Daylight Saving Time 2:00 am 3:00 am 4:00 am 5:00 am Midnight* 1:00 am*
+1 Standard Time 2:00 am 3:00 am 4:00 am 5:00 am Midnight* 1:00 am*
Daylight Saving Time 3:00 am 4:00 am 5:00 am Midnight* 1:00 am* 2:00 am*
+2 Standard Time 3:00 am 4:00 am 5:00 am Midnight* 1:00 am* 2:00 am*
Daylight Saving Time 4:00 am 5:00 am Midnight* 1:00 am* 2:00 am* 3:00 am*
+8 Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
+9 Standard Time Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
–8 Standard Time and Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
–7
Daylight Saving Time
–6
–5
*Next day
Note
•When a calibration time is reached, the watch will receive the calibration signal only
if it is in the Timekeeping Mode. Reception is not performed if a calibration time is
reached while you are configuring settings.
•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.
•The watch takes anywhere from two to 14 minutes to perform a time calibration
signal receive operation. Do not perform any button operation within 14 minutes
before or after the calibration times. Doing so can interfere with correct calibration.
•Remember that reception of the calibration signal depends on the current time in the
Timekeeping Mode.
To perform manual receive
1. Place the watch on a stable surface so its 12 o’clock
side is facing towards a window.
2. In the Timekeeping Mode, hold down Afor about two
seconds.
3. The second hand will move to R(READY) to indicate
that the watch is setting up for time calibration
reception.
•The second hand will move to W(WORK) and stay there
while actual reception is in progress.
•If signal reception is unstable during reception, the
second hand may move between W(WORK) and
R(READY).
•The hour and minute hands continue to keep time
normally.
R (READY)
W (WORK)
•Time calibration signal reception takes from two to
seven minutes, but in 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.
•If reception is successful, the second hand will move to
Y (YES). Five seconds later, the hands will move to the
correct time.
Note
•To interrupt a receive operation and return to the Timekeeping Mode, press any
button.
•If reception is not successful, the second hand will move to N (NO). Five seconds
later, the second hand will resume normal operation, without any adjustment of the
hand setting.
•If the second hand is pointing to Y (YES) or N (NO), you can return to the
Timekeeping Mode by pressing A.
Y (YES)
N (NO)
Viewing the Latest Signal Reception Results
You can use the procedure below to check whether or not the most recent signal
receive operation was successful.
To check the latest signal reception results
In the Timekeeping Mode, press A.
•If the watch was able to perform a successful signal
receive operation since midnight, the second hand will
move to Y (YES). If the watch has been unable to
receive any signal successfully, the second hand will
move to N (NO).
•The watch will return to the Timekeeping Mode after five
seconds or when you press A.
•The most recent signal reception result is cleared when
the first auto receive operation is performed on the
following day. This means Y (YES) indicates successful
signal reception since the start of the current day.
•If you adjust the time or date setting manually, the
second hand will move to N (NO).
Y (YES)
N (NO)

Operation Guide 5046
3
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Probable Cause
•
You changed the time setting manually.
•You performed some button operation
during the auto receive operation.
•The watch is not in the Timekeeping
Mode.
•Signal reception results are reset at
midnight each day.
•
Radio interference is often present
during the day time, which can interfere
with calibration signal reception.
Problem
The second
hand is
pointing at
N (NO).
What you should do
•Perform manual signal
receive at night or wait until
the next auto signal receive
operation is performed.
•Enter the Timekeeping
Mode and try again.
•Check to make sure the
watch is in a location where
it can receive the signal.
•For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
•The Home Time Zone setting is not
correct for the area where you are
using the watch.
•The home position of the hands is off.
The time
setting is
incorrect
following
signal
reception.
•Select the correct Home
Time Zone.
•Enter the home position
adjustment mode and
adjust the home position.
Adjusting the Home Positions
Even if it receives a time calibration signal normally, the watch will not show the
correct time if the home positions of the hands and/or date are off. The watch
automatically adjustments the hands every hour, so normally home position
adjustment should not be required. However, you should perform the applicable
adjustment procedure whenever you notice one of the symptoms described below.
When the hands are off by one hour or more
Perform hand home position adjustment referring to “To perform auto home position
adjustment of the hands” or “To perform manual home position adjustment of the
hands and date”.
When the day indication is not correct
Perform date home position adjustment referring to “To perform manual home position
adjustment of the hands and date”.
To perform auto home position adjustment of the hands
In the Timekeeping Mode, hold down Bfor about six
seconds.
•Note that though the second hand will stop moving
momentarily after about three seconds, you should keep
Bdepressed.You can release the Bbutton when the
second hand starts moving again, which indicates that
hand home position adjustment is being performed
automatically.
•The watch will return to the Timekeeping Mode after
auto adjustment is complete.
•To stop auto adjustment part way through and return to
the Timekeeping Mode, press Bagain.
Second hand
To perform manual home position adjustment of the hands and date
1. In the Timekeeping Mode, hold down Bfor about three
seconds.
•Release the Bbutton when the second hand stops.
•The second hand is at its proper home position if it
stops at 12 o’clock. If it doesn’t, use the Dbutton to
move the second hand to 12 o’clock.
Second hand
Correct second
hand home position
2. After confirming that the second hand is in correct
home position, press C. This will switch to hour hand
and minute hand home position adjustment.
•The hour hand and minute hand are at their proper
home positions if they both move to 12 o’clock. If they
don’t, use D(+) and B(–) to move hands to their
proper home positions.
3. After confirming that the hour and minute hands are in
their correct home positions, press C. This will
advance to date home position adjustment.
•The date is in the correct home position if it shows “1”.
If it doesn’t, use D(+) and B(–) to change the date
to “1”.
•Pressing Chere will return to the second hand
position adjustment in step 1 of this procedure.
4. Press Ato return to the Timekeeping Mode.
•After you complete the home position adjustment
procedure, place the watch in a location that allows
good time calibration signal reception, and then perform
a manual receive operation. See “To perform manual
receive” for more information.
Correct hour and minute
hands home positions
Hour hand Minute hand
Correct date home
position
Date
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date. This section also explains how to set the
current date and time manually.
•All of the operations in this section are performed in the
Timekeeping Mode.
To set the time and date manually
1. In the Timekeeping Mode, hold down Afor about five
seconds until the second hand moves in sequence to
Y(YES) or N(NO), R(READY) or W(WORK), and then
the current Home Time Zone.
•This indicates the watch is in the setting mode.
2. Use D(+) to move the second hand until it is pointing
at the Home Time Zone you want to select.
•For details about the Home Time Zone setting, see
“To specify you Home Time Zone”.
Hour hand
Second hand
Minute hand
Date
•For detailed information about time zones, see the
“UTC Offset Table”.
3. When the second hand is indicating the Home Time
Zone you want to select, press C.
•This will cause the second hand to move to A(AM) or
P(PM), which indicates the time setting mode.
4. Use D(+) and B(–) to change the current time
setting value.
5. When the hands are indicating the time you want, press
C.
•This will cause the second hand to move to the
number that indicates the current tens digit setting for
the year.
6. Press Dto move the second hand and change the
tens digit setting.
7. When the second hand is indicating the year tens digit
you want, press C.
•This will cause the second hand to move to the
number that indicates the current ones digit setting for
the year.
8. Press Dto move the second hand and change the
ones digit setting.
9. When the second hand is indicating the year ones digit
you want, press C.
•This will cause the second hand to move to the
number that indicates the current month setting.
Setting the year
(tens digit)
00 10
20
30
40
50
60
70
80
90
01
2
3
4
5
6
7
8
9
Second
hand
Setting the year
(ones digit)
10. Press Dto move the second hand and change the
month setting.
11. When the second hand is indicating the month you
want to select, press C.
•This will cause the current date setting to be
indicated.
12. Use D(+) and B(–) to change the current date
setting.
•Pressing Cat this point will take you back to step 4
of this procedure.
13. After all the settings are the way you want, press Ato
return to the Timekeeping Mode.
•Pressing Aany time during the above procedure will
return to the Timekeeping Mode, where the second
hand will resume timekeeping from second 0.
Setting the date
Setting the month
Dec Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Date
Power Supply
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: Orient the watch so its face is
pointing at a light source.
•The illustration shows how to position
a watch with a resin band.
•Note that charging efficiency drops
when any part of the solar cell is
blocked by clothing, etc.
•You should try to keep the watch
outside of your sleeve as much as
possible. Even if the face of the watch
is blocked from light only partially,
charging will be reduced significantly.
Solar cell
Important!
•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. Make sure that the watch is exposed to bright light whenever
possible.
•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.
•The special rechargeable (secondary) battery used by your watch is not intended to
be removed or replaced by you. Use of a rechargeable battery other than the special
one specified for this watch can damage the watch.
•The current time and all other settings return to their initial factory defaults whenever
battery power drops to Level 3 and when you have the battery replaced.
•Keep the watch in an area normally exposed to bright light when storing it for long
periods. This helps to keep the rechargeable battery from going dead.

Operation Guide 5046
4
Battery Power Levels
The movement of the analog hands indicates the current battery power level.
Jumps two seconds
Hand Movement
Normal.
•Second hand jumps
every 2 seconds.
•Date changes to home
position.
•Second hand stopped.
•Hour and minute hands
stopped at 12 o’clock.
Level
1
2
3
Function Status
All functions enabled.
Time calibration signal
reception disabled.
All functions disabled.
•The second hand jumping every two seconds (Level 2) indicates that battery power
is quite low. Expose the watch to light as soon as possible to charge the battery.
•When battery power is at Level 2, time calibration signal reception is disabled.
•At Level 3, all functions are disabled and settings return to their initial factory
defaults. The watch will continue to keep time internally for about one month after the
battery drops to Level 3. If you recharge the battery sufficiently during this period,
the analog hands will move automatically to the correct setting and normal
timekeeping will resume.
•The watch’s Home Time Zone setting will change automatically to +9 (Tokyo)
whenever the battery drops to Level 3. With this Home Time Zone setting, the watch
is configured to receive the time calibration signals of Japan. If you are not in Japan,
you will need to use the procedure under “To specify your Home Time Zone” to
change the Home Time Zone setting to your current location whenever the battery
drops to Level 3.
Charging Precautions
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.
Warning!
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
•Under direct sunlight
Charging Guide
After a full charge, timekeeping remains enabled for up to about five months.
•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.
Exposure Level (Brightness)
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)
Approximate Exposure Time
8 minutes
30 minutes
48 minutes
8 hours
•For details about the battery operating time and daily operating conditions, see the
“Power Supply” section of the Specifications.
•Stable operation is promoted by frequent charging.
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
25 hours
92 hours
– – –
– – –
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)
Approximate Exposure Time
Level 3 Level 2 Level 1
2 hours
6 hours
9 hours
101 hours
Exposure Level
(Brightness)
▲ ▲
•The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Auto Return Features
•If you leave the watch in the home position adjustment mode for two or three
minutes without performing any operation, it will return to the Timekeeping Mode
automatically.
•If you do not perform any operation for about two or three minutes while a setting
mode is selected, the watch will exit the setting mode automatically.
High-Speed Movement
•The Dand Bbuttons 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) and day.
•High-speed movement of hands and day will continue until you press any button, or
until the moving hand(s) and day finishes one complete cycle.
- One complete cycle for the hands is one revolution (360 degrees) of the hour
hand, or 24 hours.
- One complete cycle for the day is 31 days.
Radio-controlled Atomic Timekeeping Precautions
•Strong electrostatic charge can result in the wrong time being set.
•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 affect the reception range of the signal and make reception temporarily
impossible.
•Even if the time calibration signal is received properly, certain conditions can cause
the time setting to be off by up to one second.
•The current time setting in accordance with the time calibration signal takes priority
over any time settings you make manually.
•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 will not be performed starting from January 1, 2100.
•This watch can receive signals that differentiate between leap years and non-leap
years.
•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.
•If you are in an area where proper time calibration signal reception is impossible, the
watch keeps time with the precision noted in “Specifications”.
Transmitters
The time calibration signal received by this watch depends on the currently
selected Home Time Zone.
•When a U.S. time zone is selected, the watch receives the time calibration signal
transmitted from the United States (Fort Collins).
•When a Japanese time zone is selected, the watch receives the time calibration
signal transmitted from Japan (Fukushima and Fukuoka/Saga).
•When a European time zone is selected, the watch receives the time calibration
signals transmitted from Germany (Mainflingen) and England (Anthorn).
•When a China time zone is selected, the watch receives the time calibration signals
transmitted from China (Shangqiu City).
•When your Home Time zone is +0, +1, +2 (which can receive both the Anthorn and
Mainflingen signals), the watch first tries to pick up the signal it last successfully
received. If that fails, it tries the other signal. For the first receive after you select your
Home Time zone, the watch tries the nearest signal first (Anthorn for +0,Mainflingen
for +1 and +2).
Timekeeping
•The year can be set in the range of 2000 to 2099.
•The watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to change
it except after you have the watch’s battery replaced or when battery power drops to
Level 3.
•The date will change automatically when the current time reaches midnight. The
date change at the end of the month may take more time than normal.
•The current time for all time zones in the Timekeeping Mode is calculated in
accordance with the UTC offset of each time zone, based on your Home Time Zone
setting.
•UTC offset is calculated by this watch based on Coordinated Universal Time (UTC*)
data.
*
UTC is the world-wide scientific standard of timekeeping. It is based upon carefully
maintained atomic (cesium) clocks that keep time accurately to within microseconds.
Leap seconds are added or subtracted as necessary to keep UTC in sync with the
Earth’s rotation. The reference point for UTC is Greenwich, England.
Power Saving
Power Saving enters a sleep state automatically whenever the watch is left for a
certain period in an area where it is dark. The table below shows how watch functions
are affected by Power Saving.
•There actually are two sleep state levels: “second hand sleep” and “function sleep”.
Operation
Second hand only is stopped, all other functions are
enabled.
•All functions, including analog timekeeping, disabled
•Internal timekeeping maintained
Elapsed Time in Dark
60 to 70 minutes
(second hand sleep)
6 or 7 days
(function sleep)
•Wearing the watch inside the sleeve of clothing can cause it to enter a sleep state.
•The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is
already in a sleep state when 6:00 AM arrives, however, it will remain in that sleep
state.
To recover from a sleep state
Perform any one of the following operations.
•Move the watch to a well-lit area.
•Press any button.
Specifications
Accuracy at normal temperature: ± 15 seconds a month (with no signal calibration)
Timekeeping: Hour, minutes (hand moves every 10 seconds), seconds, day
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to
2099
Other: Home Time Zone (can be assigned one of 9 time zones); FREE (signal
receive disabled)
Time Calibration Signal Reception: Auto receive up to six times a day (five times for
the China signal) (Remaining auto receives cancelled as soon as one is
successful); Manual receive
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)
Other: Power Saving
Power Supply: Solar cell and one rechargeable battery
Approximate battery operating time: 6 months (from full charge to Level 3) under
the following conditions:
•Watch is not exposed to light
•Internal timekeeping
•Analog hands operational 18 hours per day, sleep state 6 hours per day
•4 minutes of signal reception per day

Operation Guide 5046
5
Main City
Los Angeles
Denver
Chicago
New York
London
Paris
Athens
Hong Kong
Tokyo
UTC Offset Table
UTC Offset
–8
–7
–6
–5
+0
+1
+2
+8
+9
•Based on data as of March 2008.
•The rules governing global times (UTC
offset) and summer time are determined by
each individual country.