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Operation Guide 3468
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and
24-hour timekeeping.
With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for
times in the range of noon to 11:59 p.m. and the A (AM) indicator appears to the left
of the hour digits 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.
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
The A and P indicators are not displayed with the Timekeeping Mode time on the
Countdown Timer Mode and Dual Time Mode screens.
Daylight Saving Time (DST) Setting
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
E-10
Stopwatch
The stopwatch lets you measure elapsed time, lap times,
Remaining
split times, and two finishes. Lap times and split times can
free records
be stored in memory.
•
The display range of the stopwatch is 99 hours,
59 minutes, 59 seconds.
•
All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C (page
E-6).
Note
•
"Lap time" is the time spent to cover a specific segment
of a race, such as one lap around a track. "Split time" is
the time spent from the beginning of a race up to a
Hours
1/100
certain point.
second
•
The stopwatch continues to run, restarting from zero
Minutes
after it reaches its limit, until you stop it.
Seconds
E-12
•
See "To measure elapsed time with lap times" (page E-16) and "To measure elapsed
time with split times" (page E-18) for more information about each type of measurement.
•
You can perform elapsed time measurement starting from either the lap time screen
or the split time screen (pages E-16 and E-18). Whenever you enter the Stopwatch Mode,
the screen (lap time or split time) that was displayed when you last exited the mode
will appear first.
•
During a stopwatch elapsed time operation, the upper display initially shows
minutes, seconds, and a 1/100-second value. This changes to hours, minutes, and
seconds when the time in the upper display exceeds 60 minutes.
•
The lower display initially shows hours, minutes, seconds, and a 1/100-second
value. This changes to hours, minutes, and seconds when the time in the lower
display exceeds 10 hours.
E-14
To measure elapsed time
Note
•
You can perform the following steps starting from either the lap time screen or the
split time screen.
1. Press D to start the stopwatch.
2. Press D again to stop the stopwatch.
You can resume the measurement operation by pressing D.
•
3. Press E to clear the stopwatch to all zeros.
To measure elapsed time with lap times
1. When the stopwatch display shows all zeros, press E
to display the lap time screen (indicated by
2. Press D to start an elapsed time measurement.
•
At the time, both the upper and lower displays will
show identical times.
3. Press E to record the time of the first lap.
E-16
To measure elapsed time with split times
1. When the stopwatch display shows all zeros, press E
Lap time
to display the split time screen (indicated by
2. Press D to start an elapsed time measurement.
•
At the time, both the upper and lower displays will
show identical times.
3. Press E to record the time of the first split.
•
The current split time appears in the lower display for
about eight seconds, as the total elapsed time, next
lap time, and next split time continue to be timed
internally by the watch. The split number of the
displayed time appears in the upper display.
Elapsed time
•
After eight seconds, the ongoing lap time
measurement appears in the upper display and the
ongoing elapsed time measurement appears in the
lower display.
E-18
To toggle the Timekeeping Mode between DST and Standard Time
On/Off status
DST indicator
•
The stopwatch measurement operation continues even if you exit the Stopwatch
Mode.
•
For information about how stopwatch times are stored in memory, see "Memory
Management" (page E-21).
Viewing the Stopwatch Displays
The information that appears in the watch's upper and lower displays depends on
whether you are measuring lap times or split times.
Lap Time Measurement
Upper Display: Lap time
Lower Display: Elapsed time
Split Time Measurement
Upper Display: Lap time
Lower Display: Elapsed time (Split time appears here for eight seconds as it is stored
in memory.)
Seconds
Minutes
1/100 second
Minutes
Hours
Seconds
Lap time
Elapsed time
Lap time
).
Lap number
Split Time Recording
(Displayed for eight seconds
).
after E is pressed.)
Split number
Split time
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press C once and the DST setting screen appears.
3. Press D to toggle between Daylight Saving Time (
displayed) and Standard Time (
displayed).
4. Press A to exit the setting screen.
•
The DST indicator appears on the Timekeeping and
Alarm Mode screens to indicate that Daylight Saving
Time is turned on.
Minutes
Hours
Seconds
More than one hour
1/100 second
Minutes
Hours
Seconds
More than 10 hours
•
This freezes the current lap time in the upper part of
the display for about eight seconds, while
measurement of total elapsed time and the next lap
time continue internally. The lap number of the
displayed time appears in the lower display.
•
After eight seconds, the ongoing elapsed time
measurement re-appears in the lower display.
4. Repeat step 3 to record more lap times.
5. Press D to stop the stopwatch.
6. Press E to clear the stopwatch to all zeros.
•
Lap numbers are incremented automatically starting
from 1 whenever you press E in step 3 of the above
procedure. The maximum lap number is 99. Recording
a lap after that causes the lap number count to restart
from 00.
4. Repeat step 3 to record more split times.
5. Press D to stop the stopwatch.
6. Press E to clear the stopwatch to all zeros.
•
Split numbers are incremented automatically starting
from 1 whenever you press E in step 3 of the above
procedure. The maximum split number is 99. Recording
a split time after that causes the split number count to
restart from 00.
E-11
E-13
E-15
E-17
E-19
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