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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.
Auto Return Features
• If you leave the watch in the Alarm Mode or Home Position Adjustment
Mode for two or three minutes without performing any operation, it returns
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 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) 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.
• High-speed hand movement also is triggered by changing from one mode
to another, changing a World Time Mode setting (changing the World Time
city in the World Time Mode, swapping the World Time and Home Time
positions), etc.
• All buttons (except for the C button for changing modes) are disabled
during a high-speed hand or date operation. You will be able to perform
button operations again after high-speed operation is stopped.
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 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 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 within ±20 seconds a month at normal
temperature.
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 city codes in the Timekeeping Mode is calculated in
accordance with the Greenwich Mean Time (GMT) differential of each city,
based on your Home City time setting.
• GMT differential 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".
Elapsed Time in Dark
60 to 70 minutes
Second hand only is stopped, all other functions
(second hand sleep)
are enabled.
• All functions, including analog timekeeping,
6 or 7 days
(function sleep)
disabled
• Internal timekeeping maintained
• 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.
Operation Guide 5035
Operation
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area.
• Press any button.
City Code Table
City
GMT
City
Other major cities in same time zone
Code
Differential
PPG
Pago Pago
–11.0
HNL
Honolulu
–10.0
Papeete
ANC
Anchorage
–09.0
Nome
San Francisco, Las Vegas, Vancouver,
Los Angeles
LAX
–08.0
Seattle/Tacoma, Dawson City, Tijuana
DEN
Denver
–07.0
El Paso, Edmonton, Culiacan
Houston, Dallas/Fort Worth,
CHI
Chicago
–06.0
New Orleans, Mexico City, Winnipeg
Montreal, Detroit, Miami, Boston,
NYC
New York
–05.0
Panama City, Havana, Lima, Bogota
CCS*
Caracas
–04.0
La Paz, Santiago, Port Of Spain
RIO
Rio De Janeiro
–03.0
Sao Paulo, Buenos Aires, Brasilia, Montevideo
– 02
–02.0
– 01
–01.0
Praia
GMT
Dublin, Lisbon, Casablanca, Dakar, Abidjan
+00.0
LON
London
Milan, Rome, Madrid, Amsterdam, Algiers, Hamburg,
PAR
Paris
+01.0
Frankfurt, Vienna, Stockholm, Berlin
Cairo, Jerusalem, Helsinki, Istanbul, Beirut, Damascus,
ATH
Athens
+02.0
Cape Town
JED
Jeddah
+03.0
Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, Moscow
THR
Tehran
+03.5
Shiraz
DXB
Dubai
+04.0
Abu Dhabi, Muscat
KBL
Kabul
+04.5
KHI
Karachi
+05.0
Male
DEL
Delhi
+05.5
Mumbai, Kolkata, Colombo
DAC
Dhaka
+06.0
RGN
Yangon
+06.5
BKK
Bangkok
+07.0
Jakarta, Phnom Penh, Hanoi, Vientiane
Singapore, Kuala Lumpur, Hong Kong, Taipei, Manila,
HKG
Hong Kong
+08.0
Perth, Ulaanbaatar
TYO
Tokyo
+09.0
Seoul, Pyongyang
ADL
Adelaide
+09.5
Darwin
SYD
Sydney
+10.0
Melbourne, Guam, Rabaul
NOU
Noumea
+11.0
Port Vila
WLG
Wellington
+12.0
Christchurch, Nadi, Nauru Island
• Based on data as of March, 2008.
• The rules governing global times (GMT differential and UTC offset) and
summer time are determined by each individual country.
* In December 2007, Venezuela changed its offset from –4.0 to –4.5. Note,
however, that this watch displays an offset of –4.0 (the old offset) for the
CCS (Caracas, Venezuela) city code.
6
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