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Operation Guide 4380 4396 5048
2
• The stopwatch continues to run, restarting from zero after it reaches its limit, until
you stop it.
• 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”.
Viewing the Stopwatch Digital Displays
The information that appears in the watch’s upper and lower digital 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.)
• See “To measure elapsed time with lap times” and “To measure elapsed time with
split times” 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. 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.
▲
▲
More than 10 hours
More than one hour
Minutes
Seconds
1/100 second Hours
Minutes
Seconds
Hours
Minutes
Seconds
1/100 second
Hours
Minutes
Seconds
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 A to clear the stopwatch to all zeros.
To measure elapsed time with lap times
1.When the stopwatch display shows all zeros, press
A to display the lap time screen (indicated by
/
LAP).
2.Press D to start an elapsed time measurement.
• At the time, both the upper and lower displays will
show identical times.
3.Press A to record the time of the first lap.
• This freezes the current lap time in the upper part of
the digital 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 digital display.
• After eight seconds, the ongoing elapsed time
measurement re-appears in the lower digital display.
4.Repeat step 3 to record more lap times.
5.Press D to stop the stopwatch.
6.Press A to clear the stopwatch to all zeros.
• Lap numbers are incremented automatically starting
from 1 whenever you press A 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.
Lap time
Lap number
Lap time
Elapsed time
To measure elapsed time with split times
1.When the stopwatch display shows all zeros, press A
to display the split time screen (indicated by
/SPL).
2.Press D to start an elapsed time measurement.
• At the time, both the upper and lower displays will
show identical times.
3.Press A 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.
• After eight seconds, the ongoing lap time
measurement appears in the upper display and the
ongoing elapsed time measurement appears in the
lower display.
4.Repeat step 3 to record more split times.
5.Press D to stop the stopwatch.
6.Press A to clear the stopwatch to all zeros.
• Split numbers are incremented automatically starting
from 1 whenever you press A 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.
Lap time
Elapsed time
Split time
Split number
Split Time Recording
(Displayed for eight seconds
after A is pressed.)
To time first and second place finishes
1. When the stopwatch display shows all zeros, press A to display the split time
screen (indicated by
/SPL).
2. Press D to start a time measurement.
3. Press A when the first finisher crosses the finish line.
• This freezes the time of the first finisher in the lower part of the digital display for
about eight seconds. After that, the display returns to elapsed time measurement.
4. Press D when the second finisher crosses the finish line.
• The second finisher’s time will appear in the lower display.
• The difference between the first finisher’s and the second finisher’s time will
appear in the upper display.
5. Press A to clear the stopwatch to all zeros.
Memory Management
A new log is created each time you press D in the Stopwatch Mode to start a new
elapsed time measurement operation. A log contains a log title screen, and records of
all the lap or split times you record during the current elapsed time measurement
operation.
• The capacity of the watch’s memory is 60 records.
• If you are adding records to the only log in memory and watch memory becomes
full, adding another record causes the oldest record in the log to be deleted
automatically to make room for the new record.
• If you are adding records to a log when there are multiple logs in memory and watch
memory becomes full, adding another record causes the oldest log in memory and
all of its records to be deleted automatically to make room for new records.
Stopwatch Button
Operation
From all-zeros,
press D to start.
Press A to
display lap/split
time.
Press D to stop
elapsed time
measurrement and
then press A to reset.
Data Storage Description
Creates a new log. Stores the date the button was pressed,
and the new log number.
Creates a new record with each button operation. Stores the
lap and split times and total elapsed time at each point the
button is pressed.
Resets the elapsed time to all zeros without recording data.
How stopwatch data is stored
The following table shows how stopwatch data is stored when you perform stopwatch
button operations.
• See “Recall Mode” for details on how to recall time records from memory.
Recall Mode
Use the Recall Mode to recall and delete logs and records
you stored in the Stopwatch Mode. You can use the Recall
Mode to view both lap and split time records.
• When you enter the Recall Mode, the newest log
recorded in the Stopwatch Mode will appear first. If there
are no logs in memory,
xxxxxxxx
xxxxxxxx
xxxx appears on the display.
• You can use the Recall Mode to check memory data
even while a stopwatch elapsed time measurement
operation is in progress. However, the time data that is
currently being measured will not appear in the Recall
Mode.
• You can convert a lap time saved in the Stopwatch
Mode to a split time.
Day of week
Month – Day
Log number
Log Title Screen
To recall stopwatch time records
1. In the Stopwatch Mode, check to make sure that the displays reset to all zeros.
• If all zeros are not displayed, reset the stopwatch.
2. Use the A button to select either the lap time screen (to view lap time records) or
the split time screen (to view split time records).
• To convert a lap time saved in the Stopwatch Mode to a split time, select the split
time screen.
3. Press the C button to enter the Recall Mode.
4. Use the A button to scroll through the log title screens from the newest to the
oldest until the title screen of the log whose records you want to view is displayed.
5. Press D to scroll through the records contained in the log you selected in step 4,
from the oldest to the newest.
• Whether you will be able to view lap time records or split time records will depend on
the screen you selected in step 2, above.
Press D.
▲
▲
Lap number
Split number
Log number
Log Title Screen
First record Last record
▲
▲
Lap time
Split time
▲
To delete a log
1. In the Recall Mode, display the title screen of the log you want to delete.
2. Hold down B and D until CLR stops flashing on the display.
• This deletes the log and all the records inside it.
• Deleting a single log slides all newer logs (ones with higher log numbers) upwards to
fill the empty space. This cause the log numbers of all the newer logs to be reduced
by 1. If there are six logs currently in memory (numbered 01 through 06) and you
delete log 03, the numbers of logs that previously were numbered 04, 05, and 06 will
change to 03, 04, and 05.