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Operation Guide 2548/2821
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on for about one second,
whenever you position your wrist as described below in any mode.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes the backlight to turn on.
Parallel to ground
Warning!
• 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.
Also take care that sudden illumination by the auto light switch does not
surprise or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding on 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
In the Timekeeping Mode, hold down L for about one second to toggle the auto light
switch on (
displayed) and off (
not displayed).
• With Module 2821, the auto light switch on indicator is
• The auto light switch on indicator is on the display in all modes while the auto light
switch is turned on.
• In order to protect against running down the battery, the auto light switch
automatically turns off approximately six hours after you turn it on. Repeat the above
procedure to turn the auto light switch back on if you want.
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.
Graphic Areas
The following describes the information indicated by the three graphic areas in each
mode.
• In the Timekeeping Mode, World Time Mode, and Alarm Mode, the graphic areas
indicate the passage of each minute and second of the current time (Timekeeping
Mode time).
• In the e-DATA MEMORY Mode, the graphic areas indicate the number at the
flashing digit during password input.
• In the Countdown Timer Mode, the graphic areas indicate the passage of each
minute and second of the countdown.
• In the Stopwatch Mode, the graphic areas indicate the passage of each second and
1/10 second of the elapsed time.
Minutes
Seconds
Input number
Timekeeping Mode
e-DATA MEMORY Mode
Inputting Text
The following describes how to input text in the e-DATA
Cursor
MEMORY and Alarm Modes.
To input characters
1. When the cursor is on the display, use D and B to
cycle through the available letters, numbers and
symbols, in the sequence shown below.
Press
.
to
(space)
(lower-case)
to
(symbol)
2. When the character you want is at the cursor position, press C to move the cursor
to the right.
3. Repeat steps 1 and 2 to input the rest of the characters you want.
• See the "Character List" for information about the characters you can input.
Auto Return Features
• If you leave the watch in the e-DATA MEMORY or Alarm Mode for two or three
minutes without performing any operation, it automatically changes to the
Timekeeping Mode.
• If you leave a screen with flashing digits or a cursor on the display for two or three
minutes without performing any operation, the watch automatically exits the setting
screen. Except for password input, any settings you have made up to that point are
saved automatically.
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 at high speed.
Initial Screens
When you enter the e-DATA MEMORY, World Time, or Alarm Mode, the data you were
viewing when you last exited the mode appears first.
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 year can be set in the range of 2000 to 2039.
More than 40 °
.
Seconds
1/10 seconds
Stopwatch Mode
Press
.
to
(upper-case)
to
(number)
• 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.
World Time
• The current time in all World Time Mode cities is calculated in accordance with the
Greenwich Mean Time (GMT) differential for each city, based on the current Home
City time setting in the Timekeeping Mode.
• The seconds count of the World Time is synchronized with the seconds count of the
Timekeeping Mode.
• The GMT differential is the time difference of the time zone where the city is located
from Greenwich Mean Time.
• GMT differential is calculated by this watch based on Universal Time Coordinated
(UTC) data.
Backlight Precautions
• The electro-luminescent panel that provides illumination loses power after very long
use.
• The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
• The watch may emit an audible sound whenever the display is illuminated. This is
due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
• The backlight automatically turns off whenever an alarm sounds.
• Frequent use of the backlight shortens the battery life.
Auto light switch precautions
• Wearing the watch on the inside of your wrist and movement or vibration of your arm
can cause the auto light switch to activate and illuminate the display. To avoid
running down the battery, turn off the auto light switch whenever engaging in
activities that might cause frequent illumination of the display.
• The backlight may not light if the face of the watch is
more than 15 degrees above or below parallel. Make
More than 15 degrees
sure that the back of your hand is parallel to the ground.
too high
• The backlight turns off in about one second, even if you
keep the watch pointed towards your face.
• Static electricity or magnetic force can interfere with
proper operation of the auto light switch. If the backlight
does not light, 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.
• Under certain conditions, the backlight may not light until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the backlight.
• 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.
Character List
City Code Table
City
GMT
City
Other major cities in same time zone
Code
Differential
–11
–11.0
Pago Pago
HNL
Honolulu
–10.0
Papeete
ANC
Anchorage
–09.0
Nome
San Francisco, Las Vegas, Vancouver, Seattle/Tacoma,
LAX
Los Angeles
–08.0
Dawson City
DEN
Denver
–07.0
El Paso, Edmonton
Houston, Dallas/Ft. Worth, New Orleans,
CHI
Chicago
–06.0
Mexico City, Winnipeg
Montreal, Detroit, Miami, Boston, Panama City,
NYC
New York
–05.0
Havana, Lima, Bogota
CCS
Caracas
–04.0
La Paz, Santiago, Pt. Of Spain
RIO
Rio De Janeiro
–03.0
Sao Paulo, Buenos Aires, Brasilia, Montevideo
–2
–02.0
–1
–01.0
Praia
GMT
+00.0
Dublin, Lisbon, Casablanca, Dakar, Abidjan
LON
London
Milan, Rome, Madrid, Amsterdam, Algiers,
PAR
Paris
+01.0
Hamburg, Frankfurt, Vienna, Stockholm, Berlin
CAI
Cairo
Athens, Helsinki, Istanbul, Beirut, Damascus,
+02.0
JRS
Jerusalem
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
DAC
Dhaka
+06.0
Colombo
RGN
Yangon
+06.5
BKK
Bangkok
+07.0
Jakarta, Phnom Penh, Hanoi, Vientiane
Singapore, Kuala Lumpur, Beijing, 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
Pt. Vila
WLG
Wellington
+12.0
Christchurch, Nadi, Nauru Is.
*Based on data as of June 2003.
4
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