Operation Guide 4361
5
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
•
The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
– – –
5 hours
18 hours
30 hours
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
Level 5
Level 4
Level 3
Level 2
Level 1
2 hours
6 hours
9 hours
99 hours
21 hours
80 hours
129 hours
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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.
Power Saving Function
When turned on, the Power Saving function enters a sleep
state automatically whenever the watch is left in an area
where it is dark for a certain period. The table below
shows how watch functions are affected by the Power
Saving function.
Power saving
indicator
Elapsed Time
in Dark
60 to 70 minutes
6 or 7 days
Display
Blank, with Sleep indicator (
)
flashing
Blank, with Sleep indicator (
)
not flashing
Operation
All functions enabled, except
for the display
Beeper tone, illumination, and
display are disabled.
•
Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
•
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.
•
Move the watch to a well-lit area.
•
Press any button.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down
A
until the city
code starts to flash, which indicates the setting screen.
2. Press
C
nine times until the Power Saving on/off
screen appears.
3. Press
D
to toggle Power Saving on (
) and off (
).
4. Press
A
to exit the setting screen.
•
The Power Saving indicator (
) is on the display in all
modes while Power Saving is turned on.
Button Operation Tone
In any mode (except when a setting screen is on the display), hold down
C
for about
three seconds to toggle the button operation tone on and off. The button operation
tone off indicator (
) is displayed while the tone is turned off.
•
Even if the button operation tone is turned off, the daily alarm and countdown timer
alarm continue to sound when required.
ON/Off status
Auto Return Features
•
If you leave the watch in the Alarm or Hand Setting Mode for two or three minutes
without performing any operation, it automatically returns to the Timekeeping Mode.
•
If you leave the watch with a flashing setting on the display for two or three minutes
without performing any operation, the watch automatically exits the setting screen.
Scrolling
The
B
and
D
buttons are used in various modes and setting screens to scroll
through data on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.
Initial Screens
When you enter the World Time Mode, the data you were viewing when you last exited
the mode appears first.
Radio-controlled Timekeeping Precautions
•
Strong electrostatic charge can result in the wrong time being set.
•
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.
•
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.
•
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 automatically update the date and day of the week 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.
•
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.
•
Normally, the signal reception date shown by the Last Signal screen is the date data
included in the received time calibration signal. When only time data is received,
however, the Last Signal screen shows the date as kept in the Timekeeping Mode at
the time of signal reception.
•
If you are in an area where proper time calibration signal reception is impossible, the
watch keeps time within ±15 seconds a month at normal temperature.
•
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, DST (summer
time), and auto receive settings. The following are the initial factory defaults for these
settings.
Setting
City code
DST (summer time)
Auto receive
Initial Factory Default
(Berlin)
(Auto switching)
(Auto receive)
Transmitters
This watch is designed to receive the time calibration signal transmitted from
Mainflingen, Germany and the signal from Rugby, England. You can configure the
watch to automatically select the transmitter that has the strongest signal.
In this case:
The first signal auto search operation
after factory default settings are in effect,
or after the city code has been changed.
Any case other than the above.
The watch does this:
1. Checks the Mainflingen signal first.
2. If the Mainflingen signal cannot be
received, checks the Rugby signal.
1. Checks the last successfully received
signal first.
2. If the last successfully received signal
cannot be received, checks the other
signal.
Timekeeping
•
Resetting the seconds to
00
while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to
00
without changing the minutes.
•
The day of the week is automatically displayed in accordance with the date (year,
month, and day) settings.
•
The year can be set in the range of 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 5.
•
The current time for all city codes in the Timekeeping Mode and World Time Mode is
calculated in accordance with the Greenwich Mean Time (GMT) differential for each
city, based on your Home City time setting.
•
The times for the Timekeeping Mode and all the city codes of the World Time Mode
are calculated in accordance with each city’s UTC differential.
•
The UTC differential is a value that indicates the time difference between a
reference point in Greenwich, England and the time zone where a city is located.
•
The letters “UTC” is the abbreviation for “Universal Time Coordinated”, which 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.
12-hour/24-hour Timekeeping Formats
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is also
applied in all other modes.
•
With the 12-hour format, the PM indicator (
PM
) appears on the display 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.
•
With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
Illumination Precautions
•
Illumination may be hard to see when viewed under direct sunlight.
•
Illumination automatically turns off whenever an alarm sounds.
•
Frequent use of illumination runs down the battery.