To Swap Your Home City And World Time City; Using The Stopwatch; To Enter And Exit The Stopwatch Mode - Casio 5239 Operation Manual

Operation Guide 5239
x Second Hand to the city code you want to select
3. Rotate the crown to move the
as the World Time City.
Each time you select a city code, the z Hour Hand, c Minute Hand, and n Day
Indicator move to the current time and day for that city code. For details about
city codes, see the "City Code Table" at the back of this manual.
If you think that the time indicated for the selected World Time City is not correct,
it probably means that there is something wrong with your Home City settings.
Use the procedure under "To confi gure Home City settings" (page E-36) to
correct the Home City settings.
A for about one second to cycle through the summer time settings as
4. Hold down
shown below.
A
AUTO STD
A
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To swap your Home City and World Time City

1. In the World Time Mode, pull out the crown.
2. Rotate the crown to move the
you want to select as your World Time City.
In this example, you would move the x Second Hand
to NYC in order to select New York as the World
Time City.
Wait until the z Hour Hand and c Minute Hand
complete their move to the time in the currently
selected World Time City. You will not be able to
perform step 4 of this procedure until the hands stop
moving.
3. Push the crown back in.
E-52

Using the Stopwatch

You can use the Stopwatch Mode to measure elapsed time and lap times, and to
recall lap times. Up to 10 lap times can be stored in memory. There is also memory
to record the fastest lap time. Though no more lap times are stored after 10 times are
in memory, the fastest lap time continues to be updated as required. Starting a new
elapsed time operation clears all of the memories (including fastest lap time).
What is a lap time?
A lap time is the time elapsed over a specifi c segment of a race.
Example: Car race on an oval track
Lap 1
Start
Lap 2
E-54
To perform an elapsed time operation
A A A
Start Stop (Restart)
To perform lap time measurement
A B B
. . . . . .
Start Lap (LAP1) Lap (LAP2)
Each press of B records a lap time. You can record up to 10 lap times. After that,
you can still perform lap time operations, but they will not be recorded.
After 10 lap times are recorded, the b Lower Dial Hand will point to the
This indicates that no more lap times will be recorded.
If you perform a lap time operation that is not recorded (because 10 times are
already in memory) and that lap is the fastest lap, it will be recorded as the fastest
lap.
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To recall lap data
1. While in the Stopwatch Mode, pull out the crown to enter the Data Recall Mode.
2. Rotate the crown to select other laps.
The b Lower Dial Hand will indicate the lap number of currently shown time.
The b Lower Dial Hand will indicate FL (fastest lap) when the fastest lap time
is shown.
3. To return to the Stopwatch Mode, push the crown back in.
E-58
A
DST
x Second Hand to the city
Lap 3
A B
(Stop) Reset
A B
Stop Reset
mark.
5. After selecting the city you want, push the crown back in to return to the World
Time Mode.
Swapping your Home City and World Time City
You can use the procedure below to swap your Home City and World Time City. This
capability can come in handy when you frequently travel between two locations in
different time zones.
The following example shows what happens when the
Home City and World Time City are swapped while the
Home City originally is TYO (Tokyo) and the World Time
City is NYC (New York).
Before
swapping
After
swapping
A for about three seconds until the watch beeps.
4. Hold down
This will make the World Time City ( NYC in this example) your new Home City.
At the same time, it will change the Home City you had selected prior to step 4
(TYO in this example), to your World Time City.
After swapping the Home City and World Time City, the watch will stay in the
World Time Mode. The x Second Hand will point to your new World Time City
(TYO in this example).
Note
If your current World Time City supports time calibration signal reception, making it
your Home City enables calibration signal reception for that city.
Hands and Indicators
z Hour Hand: Indicates the stopwatch minute count
(1 revolution = 60 minutes).
x Second Hand: Indicates the 1/20 (0.05)-second count
c Minute Hand: Indicates the stopwatch seconds count.
b Lower Dial Hand: Indicates the current lap.

To enter and exit the Stopwatch Mode

In the Timekeeping Mode, press C twice to enter the
Stopwatch Mode.
The b Lower Dial Hand will move to 1 (Lap 1).
Performing a new elapsed time operation after resetting the stopwatch will delete
previously recorded lap times.
An ongoing elapsed time measurement operation is not affected by pulling out the
crown.
The x Second Hand, which indicates the 1/20 (0.05)-second count during
stopwatch operation, moves only 30 seconds after an elapsed time measurement
operation is started or restarted, or after a lap time is cleared. After that, the
x Second Hand stops.
When elapsed time passes 60 minutes, the z Hour Hand and v Upper Dial Hand
will perform one full rotation.
Using the Alarm
When the alarm is turned on, an alarm will sound for about 10 seconds each day
when the time in the Timekeeping Mode reaches the preset alarm time. This is true
even if the watch is not in the Timekeeping Mode.
Hands and Indicators
z Hour Hand: Indicates the currently set alarm time hour.
x Second Hand: Indicates the current alarm ON/OFF
c Minute Hand: Indicates the currently set alarm time
v Upper Dial Hand: Indicates the hour setting of the
b Lower Dial Hand: Points to AL.
Home City World Time City
Tokyo New York
10:08 p.m. 9:08 a.m.
(Standard time) (Daylight saving time)
New York Tokyo
9:08 a.m. 10:08 p.m.
(Daylight saving time) (Standard time)
E-51
E-53
during stopwatch operation.
E-55
E-57
setting.
minute.
current alarm time in 24-hour format.
E-59