Stopwatch; Measuring Elapsed Time; Measuring Lap Times; Example: Recording A Race Lap Time - Casio 5638 Operation Manual

Stopwatch

The stopwatch measures elapsed time in
1/1000-second units for the first hour, and in
1/10-second units after that for up to 24 hours.
In addition to normal elapsed time
measurements, the stopwatch also lets you
measure lap times.
Note
Up to 200 lap time records can be
●
stored in watch memory. Performing a
split time operation while there are
already 200 records in memory will
cause the oldest record to be deleted
automatically to make room for the new
one.
You can use EDIFICE Connected to
●
view past measurement data.

Measuring Elapsed Time

1.
Enter the Stopwatch Mode.
Navigating Between Modes
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2.
Use the operations below to measure
elapsed time.
D
Start
D
Stop
D
Resume
D
Stop
Elapsed time is shown in 1/1000-
●
second units for the first hour of the
measurement session. After the first
hour, elapsed time is shown in 1/10-
second units.
First hour After first hour
Minutes,
seconds
1/1000 seconds Seconds, 1/10 seconds
Operation Guide 5638
3.
Press (B) to reset the elapsed time to all
zeros.

Measuring Lap Times

1.
Enter the Stopwatch Mode.
Navigating Between Modes
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2.
Use the operations below to measure
elapsed time.
Each press of (B) causes the elapsed
●
time of the section (lap time) to be
shown for eight seconds.
Elapsed time is shown in 1/1000-
●
second units for the first hour of the
measurement session. After the first
hour, elapsed time is shown in 1/10-
second units.
First hour
1/1000 seconds
Minutes,
seconds
Lap time seconds
3.
Press (B) to reset the elapsed time to all
zeros.
Hours,
minutes
D
Start
B
Lap
D
Stop
After first hour
Seconds, 1/10 seconds
Hours,
minutes
Lap time seconds
Example: Recording a Race
Lap Time
This section explains how to record lap times
while watching a race. It also shows how you
can view lap times with EDIFICE Connected
after the race is over.
Lap Times
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During a race
Measure lap times.
1.
Enter the Stopwatch Mode.
Navigating Between Modes
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2.
Use the operations below to perform a
timer operation.
D
Start
B
B
D
Stop
Pressing (B) at the end of each lap will
record them in watch memory.
Lap times are recorded in 1/1000-
●
second units during the first hour of an
elapsed time measurement session.
After one hour, times are recorded in
1/10-second units.
3.
Press (B) to reset the elapsed time to all
zeros.
4.
Hold down (C) for at least two seconds to
return to the Timekeeping Mode.
After a race
After the race is finished, you can view the
measured lap times with EDIFICE Connected.
Sending Stopwatch Data to a Phone
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Checking a Lap Time
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