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• Alert On:
Alert Name
On/Off
Month
Screen
Setting
Alert Off:
Alert Name
On/Off
Date Alert Mode
Screen
Setting
(
D/A
) Screen
• After returning to the Date Alert Mode (
D/A
change to another mode.
Time Recorder
The Time Recorder Mode lets you store up to 50 time
entries (hour, minutes, seconds) with the touch of a
Home city
button. One way you can use the Time Recorder Mode is
time
to record the start time and the end time of a particular
event.
• The Time Recorder Mode always displays times using
24-hour format, regardless of the 12-hour/24-hour
format setting in the Timekeeping Mode.
To enter the Time Recorder Mode
1. From the Timekeeping Mode, use C and A to display
T/S
(Time Recorder Mode) in the text area.
2. Press B to enter the Time Recorder Mode.
Seconds
Text area
Standby Screen
To record a Time Recorder time
1. Enter the Time Recorder Mode.
• This displays the Time Recorder standby screen.
2. Press C to record the current time (hour, minutes,
seconds).
• The recorded time flashes for about two seconds and
then assigned the next available record number, in the
range of
T1
standby screen appears.
• A new time is recorded each time you press C while
the standby screen is on the display.
• Records are assigned numbers sequentially from
through
T50
• Storing a new time record when there are already 50
records stored in memory automatically deletes record
T1
, shifts the remaining records upwards by 1, and
stores the new record as
To recall Time Recorder times
Enter the Time Recorder Mode, and then press A to
scroll through times stored in memory.
• Each press of A scrolls through time records from
higher numbered (newer) records to lower numbered
records.
To delete all Time Recorder times
Enter the Time Recorder Mode, and then press A and
C at the same time to delete all Time Recorder times.
To exit the Time Recorder Mode
Recorded time
In the Time Recorder Mode, press B and the text area
(Hour : Minutes
shows the Time Recorder Mode indicator (
Seconds)
• After returning to the Time Recorder Mode indicator
Time record
), you can use C and A to change to another
(
T/S
number
mode.
Stopwatch
The stopwatch lets you measure elapsed time, split times,
Home city
and two finishes.
time
• The display range of the stopwatch is 23 hours, 59
Hours
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.
To enter the Stopwatch Mode
1/100
Minutes
1. From the Timekeeping Mode, use C and A to display
second
Seconds
STW
(Stopwatch Mode) in the text area.
2. Press B to enter the Stopwatch Mode.
To measure times with the stopwatch
Elapsed Time
C
C
C
Start
Stop
Re-start
Split Time
C
A
A
Start
Split
Split release
Two Finishes
C
C
A
Start
Split
Stop
First runner
Second runner
finishes.
finishes.
Display time of
first runner.
USER'S GUIDE 2578
Date Alert Mode
Day
(
D/A
) Screen
) screen, you can use C and A to
through
T50
. Next the time recorder
T1
.
T50
.
).
T/S
C
A
Stop
Clear
C
A
Stop
Clear
A
A
Split release
Clear
Display time of
second runner.
To exit the Stopwatch Mode
In the Stopwatch Mode, press B and the text area shows the Stopwatch Mode
indicator (
).
STW
• After returning to the Stopwatch Mode indicator (
change to another mode.
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 Date Alert Mode or Time Setting Mode, or with a mode
indicator in the text area for two or three minutes without performing any operation, it
automatically changes to the Timekeeping Mode.
• If you leave the watch with a flashing setting or cursor on the display two or three
minutes without performing any operation, it automatically saves any settings you
have made up to that point and exits the setting screen.
Scrolling
The A and C 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, Alarm, or Date Alert Mode, the data you were
viewing when you last exited the mode appears first.
Time Calibration Signal Reception 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 is 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 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.
• 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.
• 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.
• 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.
• When all three auto receptions are successful (2:00 AM, 4:00 AM, and 6:00 AM), the
watch uses the data of the last reception for calibration. When only one reception is
successful, the watch uses the data of the successful reception.
• 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 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
Initial Factory Default
City code
BER
(Berlin)
DST (summer time)
A
(Auto switching)
DST
Auto receive
ON
(Auto receive)
R/C
Timekeeping
• Resetting the seconds to
while the current count is in the range of 30 to 59
00
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 2039.
• 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.
• 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.
• 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 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.
12-hour/24-hour Timekeeping Formats
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is also
applied in the Alarm Mode.
The World Time Mode and Time Recorder Mode always display times using 24-hour
format, regardless of the 12-hour/24-hour format setting in the Timekeeping Mode.
• In all modes besides the Timekeeping Mode, the current Home City time in the
upper left corner of the display is always displayed using 24-hour format.
• 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 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. The
indicator 24 indicates the 24-hour format.
), you can use C and A to
STW
4
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