Operation Guide 5133
E-60
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.
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Elapsed Time in Dark
Display
Operation
60 to 70 minutes
Blank
All functions enabled, except for the display
6 or 7 days
Blank
•
Beeper tone, illumination, and display
disabled
•
Analog timekeeping stopped at 12 o’clock
•
Auto receive 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.
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To turn Power Saving on and off
1. In the Timekeeping Mode, hold down
A
for about two
seconds until the watch beeps and
ADJ
appears on the
display.
•
This will cause the currently selected city code to
fl ash.
2. Press
C
10 times until the Power Saving on/off screen
appears.
3. Press
D
to toggle Power Saving on (
PSON
) and off
(
PSOF
).
4. Press
A
to exit the setting screen.
On/Off status
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Auto Return Features
•
If you leave the watch in the Alarm Mode, or with the battery level indicator
displayed for two or three minutes without performing any operation, it automatically
returns to the Timekeeping Mode.
•
If you leave the watch with a fl ashing 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 fi rst.
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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 refl ectivity 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 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.
•
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.
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•
If you are in an area where proper time calibration signal reception is impossible,
the watch keeps the time with the precision noted in “Specifi cations”.
•
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
(summer time) settings (page E-47), and auto receive settings (page E-26).
•
The Home City setting reverts to the initial default of
TYO
(Tokyo) whenever the
battery power level drops to Level 5 or when you have the rechargeable battery
replaced. If this happens, change the Home City to the setting you want (page
E-12).
Transmitters
The time calibration signal received by this watch depends on the currently selected
Home City code (page E-12).
•
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 (Mainfl ingen) and England (Anthorn).
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•
When a China time zone is selected, the watch receives the time calibration signals
transmitted from China (Shangqiu City).
•
When your Home City is
LIS
,
LON
,
MAD
,
PAR
,
ROM
,
BER
,
STO
,
ATH
,
MOW
(which
can receive both the Anthorn and Mainfl ingen signals), the watch fi rst tries to pick
up the signal it last successfully received. If that fails, it tries the other signal. For
the fi rst receive after you select your Home City, the watch tries the nearest signal
fi rst (Anthorn for
LIS
,
LON
, Mainfl ingen for
MAD
,
PAR
,
ROM
,
BER
,
STO
,
ATH
, and
MOW
).
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.
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•
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 Coordinated Universal Time (UTC) for each
city, based on your Home City time setting.
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 (
P
) 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.
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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.
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Specifi cations
Accuracy at normal temperature:
± 30 seconds a month (with no signal calibration)
Digital Timekeeping:
Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time system: Switchable between 12-hour and 24-hour formats
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); Daylight Saving
Time (summer time)/Standard Time
Time Calibration Signal Reception:
Auto receive 6 times a day (5 times a day for
the Chinese calibration signal) (Remaining auto receives cancelled as soon
as one is successful); Manual receive
Receivable Time Calibration Signals: Mainfl ingen, 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)
