Casio QW-1848 User Manual
2. OPERATION CHART : QW-1848
GENERAL GUIDE
Press to change from mode to mode.
After you perform an operation in any mode, pressing returns to the Timekeeping Mode.
Press in any mode to illuminate the display.
Timekeeping Mode Alarm Mode
Stopwatch ModeCountdown Alarm Mode
TIMEKEEPING MODE
Day of week
Month
SecondsHour
Minutes
PM indicator
4. While any other digits (besides seconds) are selected (flashing), press to
increase the number. Holding down changes the number at high speed.
While any digits are selected, press to switch between the 12-hour and 24-hour
formats.
When the 12-hour format is selected, the P (PM) indicator appears on the display to
indicate “p.m.” times. There is no indicator for “a.m.” times.
Selecting the 24-hour format causes the 24 indicator to appear on the display.
5. After you set the time and date, press to return to the Timekeeping Mode.
The day of the week is automatically set in accordance with the date.
The date can be set within the range of January 1, 1995 to December 31, 2039.
If you do not operate any button for a few minutes while a selection is flashing, the
flashing stops and the watch goes back to the Timekeeping Mode automatically.
To set the time and date
1. Press while in the Timekeeping Mode. The seconds
Day
digits flash on the display because they are
2. Press to change the selection in the following
sequence.
Seconds
Day
3. While the seconds digits are selected (flashing), press
to reset the seconds to . If you press while the
seconds count is in the range of 30 to 59, the seconds
are reset to and 1 is added to the minutes. If the
seconds count is in the range of 00 to 29, the minutes
count is unchanged.
Hour Minutes
selected
YearMonth
BACKLIGHT FUNCTION
A backlight that uses an EL (electro-luminescent) panel
causes the entire display to glow for easy reading in the
dark. An EL alarm feature can be turned on so the backlight
flashes whenever an alarm or hourly time signal sounds.
The EL alarm on indicator ( ) is shown on the display
EL alarm on indicator
Note
The backlight of the watch employs an electro-luminescent (EL) light, which loses
illuminating power after very long use.
The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
To manually turn on the backlight
Pressing in any mode causes the backlight to turn on for about three seconds.
The backlight automatically turns off whenever an alarm sounds.
The above operations turn on the backlight, regardless of the current EL alarm
settings.
To turn the EL alarm on and off
In the Timekeeping Mode, hold down for about two seconds to toggle the EL alarm
indicator displayed) and off ( indicator not displayed).
on (
When the EL alarm is on, the backlight flashes while the alarm and hourly time signal
tones are sounding.
in all modes while the EL alarm is on.
ALARM MODE
Hourly time signal on
indicator
Mode indicator
Month
Minutes
Hour
Alarm on indicator
To set a 1-Month alarm
Set the month, hour and minutes for the alarm time. Set for the day (see step
3 under “To set the alarm time”). This type of setting causes the alarm to sound every
day at the time you set, only during the month you set.
To set a Monthly alarm
Set the day, hour and minutes for the alarm time. Set for the month (see step 3
under “To set the alarm time”). This type of setting causes the alarm to sound every
month at the time you set, on the day you set.
You can set an alarm with hour, minutes, month, and day.
When the alarm is turned on, the alarm sounds for 20
seconds at the preset time. When the Hourly Time Signal
is turned on, the watch beeps every hour on the hour.
Day
Alarm Types
The types of alarm you get depends on the information you
set.
To set a Daily alarm
Set the hour and minutes for the alarm time. Set for
the month and for the day (see step 3 under “To set
the alarm time”). This type of setting causes the alarm
to sound everyday at the time you set.
To set a Date alarm
Set the month, day, hour and minutes for the alarm time.
This type of setting causes the alarm to sound at the
specific time, on the specific date you set.
To set the alarm time
1.Press while in the Alarm Mode. The hour digits flash on the display because they
selected
are
.
This operation automatically turns on the alarm.
2.Press to change the selection in the following sequence.
3.Press to increase the selected digits. Holding down changes the number at
high speed.
To set an alarm that does not include a month (Daily alarm, Monthly alarm), set for
the month. Press until the mark appears (between 12 and 1) while the month
digits are flashing.
To set an alarm that does not include a day (Daily alarm, 1-Month alarm), set for
the day. Press until the mark appears (between 31 and 1) while the day digits
are flashing.
The format (12-hour and 24-hour) of the alarm time matches the format you select
for normal timekeeping.
When setting the alarm time using the 12-hour format, take care to set the time
correctly as morning (no indicator) or afternoon (P).
4.After you set the alarm time, press to return to the Alarm Mode.
If you do not operate any button for a few minutes while a selection is flashing, the
flashing stops and the watch goes back to the Alarm Mode automatically.
To stop the alarm
Press any button to stop the alarm after it starts to sound.
To turn the alarm and Hourly Time Signal on and off
Press while in the Alarm Mode to change the status of the alarm and Hourly Time
Signal in the following sequence.
.
Hour
[Alarm On Indicator/Hourly Time Signal On Indicator]
Minutes
Both OFFBoth ON
Month
Alarm Only
Day
Hourly Time
Signal Only
COUNTDOWN ALARM MODE
Mode indicator
Current time
Hours
Minutes
3.Press to increase the selected number. Holding down changes the selection
at high speed.
To set the starting value of the countdown time to 24 hours, set to .
4.After you set the countdown time, press to return to the Countdown Alarm Mode.
If you do not operate any button for a few minutes while a selection is flashing, the
flashing stops and the watch goes back to the Countdown Alarm Mode automatically.
To use the countdown timer
1.Press while in the Countdown Alarm Mode to start the countdown timer.
2.Press again to stop the countdown timer.
You can continue countdown timer operation by pressing .
3.Stop the timer and then press to reset the countdown time to its starting value.
When the end of the countdown is reached and auto repeat timing is off, the alarm
sounds for 10 seconds or until you stop the alarm by pressing any button. Countdown
timing stops, and the countdown time is automatically reset to its starting value after
the alarm stops.
To turn auto repeat timing on and off
Auto repeat on indicator
The countdown timer can be set within a range of 1 second
to 24 hours. When the countdown reaches zero, an alarm
sounds for 10 seconds or until you press any button.
Note that you can also select auto repeat timing that
automatically restarts the countdown from the original
value you set whenever zero is reached.
To set the countdown time
1. Press while in the Countdown Alarm Mode. The hours
digit flashes on the display because it is
2. Press to change the selection in the following
Seconds
sequence.
Hours
1. Press while in the Countdown Alarm Mode. The hours
digit flashes on the display because it is
2. Press to turn auto repeat on (AUTO displayed) and
off (AUTO not displayed).
3. Press to return to the Countdown Alarm Mode.
When the end of the countdown is reached while auto
repeat is on, the alarm sounds, but the countdown starts
again automatically whenever the countdown reaches
zero. You can stop timing by pressing , and manually
reset to the starting countdown time by pressing .
Minutes
selected
Seconds
selected
.
.
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Mode indicator
Current time
Minutes
Seconds
1/100 second
To record split times
1.Press to start the stopwatch.
2.Press to display the timing up to that point. Stopwatch timing continues internally.
3.Press to clear the split time and to continue time measurement on the display.
You can repeat steps 2 and 3 as many times as you want.
4.Press to stop the time measurement.
5.Press to clear the stopwatch to all zeros.
To time first and second place finishes
1.Press to start the stopwatch.
2.Press when the first finisher crosses the line, and record the time.
3.Press when the second finisher crosses the line.
4.Press to display the finishing time of the second finisher.
5.Press again to clear the stopwatch to all zeros.
The Stopwatch Mode lets you measure elapsed time, split
times, and two finishes. The range of the stopwatch is 23
hours, 59 minutes, 59 seconds.
To measure elapsed time
1. Press to start the stopwatch.
2. Press to stop the stopwatch.
You can resume the measurement operation by pressing again.
3. Press to clear the stopwatch to all zeros.
For the first 60 minutes, the display shows minutes,
seconds, and 1/100 second. After 60 minutes, the dis-
play format changes to show hours, minutes, and sec-
onds.
STOPWATCH MODE
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