Casio 5457 - Countdown Timer; Using the Stopwatch; To Specify Standard Time or Daylight Saving Time (DST) for a City; To Enter the Countdown Timer Mode

Operation Guide 5457
E-29
Note
x The Stopwatch Mode can indicate elapsed time up to 59minutes, 59.99seconds.
x An ongoing elapsed time measurement operation will continue internally even if
you change to another mode. However, if you exit the Stopwatch Mode while a
split time is displayed, the split time will not be displayed when you return to the
Stopwatch Mode.
E-28
To perform an elapsed time operation
D
D D D A
Start Stop Resume (Stop) Reset
To pause at a split time
D
A A D A
Start Split
(SPL displayed)
Split release Stop Reset
To measure two fi nishes
D
A D A A
Start Split
(SPL displayed)
First runner fi nishes.
Display time of fi rst
runner.
Stop
Second runner
fi nishes.
Split release
Display time of
second runner.
Reset
E-27
Using the Stopwatch
The stopwatch measures elapsed time, split times, and two fi nishes.
To enter the Stopwatch Mode
Use C to select the Stopwatch Mode as shown on
page E-9.
SPL indicator
1/100 second
Minutes
Seconds
E-26
To perform a countdown timer operation
D
D D D A
Start Stop Resume (Stop) Reset
x Before starting a countdown timer operation, check to make sure that a
countdown operation is not in progress (indicated by the seconds counting down).
If it is, press D to stop it and then A to reset to the countdown start time.
To stop the alarm
Press any button.
E-25
3. When the setting you want to change is fl ashing, use B and D to change it as
described below.
Setting Screen Button Operation
Start Time
Use D (+) and B (–) to change the setting.
x You can set a start time in the range of 1 to 60minutes in
1-minute increments.
Auto-repeat
Press D to toggle auto-repeat on ( displayed) and off
( displayed).
Progress Beeper
Press D to toggle the progress beeper on ( ) and off
( ).
4. Press A to exit the setting mode.
x You can also perform steps 1 and 2 of the above procedure whenever you need
to view the current auto-repeat and progress beeper settings.
E-24
To confi gure the countdown timer
1. While the countdown start time is on the display in
the Countdown Timer Mode, hold down A until the
current countdown start time starts to fl ash, which
indicates the setting mode.
x If the countdown start time is not displayed, use the
procedure under “To perform a countdown timer
operation” (page E-26) to display it.
2. Press C to move the fl ashing in the sequence shown below to select other
settings.
Start Time Auto-repeat Progress Beeper
CC
C
E-23
Countdown End Beeper
The countdown end beeper lets you know when the countdown reaches zero.
x When the progress beeper is turned off, the countdown end beeper sounds for
about 10seconds, or until you press any button to stop it.
x When the progress beeper is turned on, the countdown end beeper sounds for
about one second.
Progress Beeper
When the progress beeper is turned on, the watch uses beeps to signal countdown
progress as described below.
x Starting from fi ve minutes before the end of the countdown, the watch emits four
short beeps at the top of each countdown minute.
x 30seconds before the end of the countdown, the watch emits four short beeps.
x The watch emits a short beep for each of the last 10seconds of the countdown.
x If the countdown start time is six minutes or greater, the watch emits a short beep
for each second of the fi nal 10seconds before the fi ve-minute point is reached.
Four short beeps are emitted to signal when the fi ve-minute point is reached.
E-22
x See “To confi gure the countdown timer” on page E-24 for information about setting
up the timer.
Auto-repeat
When auto-repeat is turned on, the countdown automatically restarts from the
countdown start time when it reaches zero. If left running, the countdown is
repeated a total of eight times, after which it stops automatically.
When auto-repeat is turned off, the countdown stops when it reaches zero and the
display shows the original countdown start time.
x Pressing D while an auto-repeat countdown is in progress pauses the current
countdown. You can resume the auto-repeat countdown by pressing D, or you
can press A to reset to the countdown time starting value.
Countdown Timer Beeper Operations
The watch beeps at various times during a countdown so you can keep informed
about the countdown status without looking at the display. The following describes
the types of beeper operations the watch performs during a countdown.
E-21
Countdown Timer
The countdown timer can be set within a range of
one minute to 60minutes. An alarm sounds when the
countdown reaches zero. The countdown timer also has
an auto-repeat feature and a progress beeper that signals
the progress of the countdown.
To enter the Countdown Timer Mode
Use C to select the Countdown Timer Mode as shown
on page E-8.
Confi guring the Countdown Timer
The following are the settings you should confi gure
before actually using the countdown timer.
Countdown start time; Auto-repeat on/off; Progress
beeper on/off
SecondsMinutes
E-20
To specify standard time or daylight saving time (DST) for a city
1. In the World Time Mode, use D (East) to display the
city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.
2. Hold down A for about two seconds.
x This toggles the city code you selected in step1
between Daylight Saving Time (DST indicator
displayed) and standard time (DST indicator not
displayed).
x Using the World Time Mode to change the DST setting of the city code that is
selected as your Home City also will change the Timekeeping Mode time DST
setting.
x Note that you cannot switch between standard time/daylight saving time (DST)
while GMT is selected as the World Time City.
x The standard time/daylight saving time (DST) setting affects only the currently
selected time zone. Other time zones are not affected.
DST indicator