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USER’S GUIDE 2707
4
Stopwatch
The stopwatch lets you measure elapsed time, split
times, and two finishes.
• The display range of the stopwatch is 23 hours, 59
minutes, 59.99 seconds.
• The stopwatch continues to run, restarting from
zero after it reaches its limit, until you stop it.
• Exiting the Stopwatch Mode while a split time is
frozen on the display clears the split time and
returns to elapsed time measurement.
• The stopwatch measurement operation continues
even if you exit the Stopwatch Mode.
• All of the operations in this section are performed in
the Stopwatch Mode, which you enter by pressing
C.
Hours
Seconds
1/100 second
Minutes
To measure times with the stopwatch
D
Start Stop
Elapsed Time
➤
Re-start Clear
D ➤
Stop
D ➤D ➤
A
Split Time
D
Start Split
➤
Split release Clear
A ➤
Stop
A ➤D ➤A
Two Finishes
D
Start Split
➤
Stop Clear
A ➤
Split release
D ➤A ➤A
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
(SPL displayed)
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, Data Memory, or Hand Setting 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 saves anything
you have input up to that point and exits the setting screen.
Data and Setting Scrolling
The A 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 Alarm or World Time Mode, the data you were viewing when you
last exited the mode appears first.
Time Calibration Signal Reception
• This watch is able to receive the time calibration signal
transmitted from Mainflingen, Germany (located 25
kilometers southeast of Frankfurt). Signal reception is
possible within the area represented by a circle with a
radius of about 1000 kilometers.
At distances further than about 500 kilometers, the
signal may become weak and reception may be
impossible under certain conditions.
• Signal reception may be poor in the shaded area on the
map, even though it is within 1,000 kilometers of the
signal transmitter.
Frankfurt
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• This watch is designed to receive the signal transmitted from Mainflingen. This
means that reception is best when the antenna built into the 12 o’clock edge of the
watch is facing towards Mainflingen. Note, however, that moving the watch while the
time calibration signal receive operation is taking place will make stable reception
impossible.
• The watch is designed to automatically update the date and day of the week for the
period January 1, 2000 to December 31, 2039. Setting of the date by the time
calibration signal cannot be performed starting from January 1, 2040.
• This watch can receive signals that differentiate between leap years and non-leap
years.
• Even when the watch is within the reception range of the transmitter, signal
reception is impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• The time calibration signal is bounced 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.
• Think of the watch as acting like a TV or radio when it is receiving the calibration
signal. When receiving indoors, move to a location as near as possible to a window.
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Near TVs, refrigerators, computers, or other household appliances
Far away from broadcasting stations among ferro-concrete structures or near
mountains
Underground, in tunnels or in ferro-concrete buildings
Near high-tension wires, neon signs, or radio stations with interfering frequencies
Near railroads, highways or airports
In trains or cars
• Radio interference can make signal reception impossible.
• Strong electrostatic charge can result in the wrong time being set.
• 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.
Auto Summer Time (DST) Switching
The time calibration signal transmitted from Mainflingen, Germany includes both
standard time and summer time (Daylight Saving Time) data. When auto summer time
(DST) switching is turned on, the watch switches between standard time and summer
time (DST) automatically in accordance with the calibration signal.
• Daylight Saving Time (DST) advances the time setting by one hour from Standard
Time. Remember that not all countries or even local areas use Daylight Saving Time.
• When using the watch within the reception range of the Mainflingen transmitter, and
BER, PAR , LON, or ATH is selected as the Home City code, select AUTO DST to
turn on the auto summer time setting.
• The default auto summer time setting is AUTO DST whenever you select BER, PAR,
LON or ATH as your Home City code.
• If you experience problems receiving the time calibration signal in your area, it is
probably best to turn off auto time switching.
To select the auto summer time setting
1. In the Timekeeping Mode, press B. This causes the current auto receive on/off
setting (the receive indicator) to flash, which indicates the setting screen.
2. Press C twice until the summer time (DST) setting screen appears.
3. Use D to cycle through the summer time settings in the sequence shown below.
4. When the setting you want is selected, press B to exit the setting screen.
Troubleshooting
Check the following points whenever you experience problems with your watch.
Problem
Cannot perform
manual receive.
Auto receive is
turned on, but
the receive
indicator does
not appear on
the display.
Time setting is
incorrect
following signal
reception.
Probable Cause
The watch is not in the Timekeeping Mode.
• You changed the time setting manually.
• The watch was not in the Timekeeping
or World Time Mode, or you were
performing some button operation
during the auto signal receive operation
was performed.
•
Even if receive is successful, the receive
indicator disappears every day at 3am.
•
If the time is one hour off, the DST setting
may be incorrect.
• The Home City Code setting is not
correct for the area where you are using
the watch.
What you should do
Enter the Timekeeping Mode
and try again.
• Perform manual signal receive
or wait until the next auto
signal receive operation is
performed.
• Check to make sure the watch
is in a location where it can
receive the signal.
•
Put the watch in a location
that is suitable for good
reception.
• Change the DST setting to
AUTO DST.
• Select the correct Home City
Code.
Timekeeping
• 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 2039.
• The watch’s built-in full automatic calendar automatically 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.
• The current time for all city codes in the Timekeeping Mode is calculated in
accordance with the Greenwich Mean Time (GMT) differential for each city, based
on the your Home City time setting.
• GMT differential is calculated by this watch based on Universal Time Coordinated
(UTC
*
) data.
*
The letters “UTC” stands for “Universal Time Coordinated,” which is the world-wide
scientific standard of timekeeping. It is based upon carefully maintained atomic
(cesium) clocks that keep accurate 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.
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 P (PM) indicator appears on the display for times in the
range of noon to 11:59 p.m. and the 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, with 24
indicator.
Inputting Text
The following describes how to input text in the Alarm and Data Memory Modes.
To input characters
1. When the cursor is on the display, use A and D to
cycle through the available letters, numbers and
symbols, in the sequence shown below.
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.
Data Memory Management
Data memory can hold up to 315 characters total, while each record can contain up to
63 characters. This means that 40 records can be stored in data memory when each
record contains seven characters of text or less.
Backlight Precautions
The backlight uses an EL (electro-luminescent) panel that causes the entire display to
glow for easy reading in the dark.
In any mode, press L to illuminate the display for about one second.
• 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.
l
l
l
l
l
l
l
l
l
Press D.
a to z
(lower-case)
(space)
*
to +
(symbol)
0 to 9
(number)
A to Z
(upper-case)
Press A.
Reminder Text Input
Screen
Cursor