Casio 3446 User manual

Operation Guide 3446
E-9
Illumination
In any mode, press Lto illuminate the display for about two seconds.
xIllumination may be hard to see when viewed under direct sunlight.
xIllumination turns off automatically whenever an alarm sounds.
xFrequent use of illumination runs down the battery.
E-8
5. After you set the time and date, press Ato return to the Timekeeping Mode.
E-7
3. While the seconds digits are selected (flashing), press Dto reset the seconds to
00. If you press Dwhile the seconds count is in the range of 30 to 59, the seconds
are reset to 00 and 1 is added to the minutes. If the seconds count is in the range of
00 to 29, the minutes count is unchanged.
4. While any other digits (beside seconds) are selected (flashing), press Dto
increase the number or Bto decrease it. While the 12/24-hour format setting is
selected, press Dor Bto toggle it between 12 and 24.
xExcept for when adjusting the seconds or setting the 12/24-hour format, holding
down a button changes the current selection at high speed.
xWhen the 12-hour format is selected, the indicator Pappears on the display to
indicate “P.M.” times. There is no indicator for “A.M.” times.
xWhen the 24-hour format is selected, the indicator 24 appears on the display.
xThe year can be set in the range of 2000 to 2099.
xThe watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to
change it except after you have the watch’s battery replaced.
xThe day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
E-6
Timekeeping Mode
To set the time and date
1. Hold down Awhile in the Timekeeping Mode until
the seconds digits flash on the display because they
are selected.
2. Press Cto change the selection in the following
sequence.
12/24-Hour Format
C
C
C
Seconds Hour Minutes
Day Month Year
CC
C
C
Seconds
Day of week
Month – Day
Vibration alarm on indicator
(page E-10)
PM indicator
Minutes
Hour
E-5
xThis watch returns to the Timekeeping Mode whenever you hold down the Cbutton
for one or two seconds. If you ever lose track of what mode you are in or what you
should do next, hold down Cto return to regular timekeeping.
xIn any mode press Lto illuminate the display.
CC
C
Stopwatch Mode Alarm Mode Dual Time Mode
E-4
General Guide
xPress Cto change from mode to mode.
xAfter you perform an operation in any mode, pressing Creturns to the Timekeeping
Mode.
xIf you do not press any button for a few minutes while making settings in any mode
(indicated when settings are flashing), the watch automatically clears the setting screen
(settings stop flashing) and returns to the normal display for the mode you are in.
C
Timekeeping Mode Countdown Timer Mode
C
E-3
Procedure Lookup
The following is a handy reference list of all the operational procedures contained in
this manual.
To set the time and date ......................................................................................... E-6
To turn the vibration alarm on and off................................................................. E-11
To set the countdown start time .......................................................................... E-13
To use the countdown timer................................................................................. E-14
To turn the Auto-Start function on and off.......................................................... E-17
To set the alarm time............................................................................................. E-18
To turn the daily alarm and hourly time signal on and off ................................ E-20
To test the alarm sound........................................................................................ E-21
To set the Dual Time ............................................................................................. E-22
E-2
Contents
General Guide.......................................................................................................... E-4
Timekeeping Mode .................................................................................................. E-6
Illumination .............................................................................................................. E-9
Vibration Alarm...................................................................................................... E-10
Countdown Timer Mode........................................................................................ E-12
Stopwatch Mode.................................................................................................... E-15
Alarm Mode............................................................................................................ E-18
Dual Time Mode..................................................................................................... E-22
Specifications ........................................................................................................ E-24
E-1
About This Manual
To ensure that this watch provides you with the years of service for which it is
designed, be sure to carefully read and follow the instructions under “Operating
Precautions” and “User Maintenance”.
Be sure to keep all user documentation handy for future reference.
xNote that the product illustrations in this manual are intended for reference only,
and so the actual product may appear somewhat different than depicted by an
illustration.
xAll explanations in this manual use expressions such as “sounds the alarm” for
alarm operations. When the Vibration Alarm is turned on, these expressions should
be understood to mean “causes the watch to vibrate” (page E-10).
MA1602-EA © 2016 CASIO COMPUTER CO., LTD.

Operation Guide 3446
E-19
3. Press Dto increase the selected digits and Bto decrease them. Holding down
either button changes the selection at high speed.
xThe format (12-hour and 24-hour) of the alarm time matches the format you select
for regular timekeeping.
xWhen 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 Ato return to the Alarm Mode.
E-18
Alarm Mode
When the Daily Alarm is turned on, an alarm operation
(20-second tone or 10-second vibration) is performed
at the preset time each day. Press any button to stop
the alarm after it starts to sound. When the Hourly Time
Signal is on, the watch beeps every hour on the hour.
To set the alarm time
1. Hold down Auntil the hour digits start to flash on
the display. The hour digits flash because they are
selected.
xThis operation will switch the Daily Alarm on
automatically.
2. Press Cto change the selection in the following
sequence.
Hour Minutes
C
Hourly time signal
on indicator
Current time
Alarm on indicator
Minutes
Hour
Mode indicator
E-17
About the Auto-Start function
With the Auto-Start function, pressing Dcauses the watch to perform a five-second
countdown. When the countdown reaches zero, stopwatch operation starts
automatically. During the final three seconds of the countdown, a beeper sounds with
each second.
To turn the Auto-Start function on and off
While the display is showing all zeros in the Stopwatch Mode, press Bto toggle it
on and off.
xThe indicator AUTO-ST appears and 05 is shown in the upper display while Auto-
Start is turned on. The AUTO-ST indicator is not shown and the upper part of the
display shows the current time when Auto-Start is turned off.
E-16
(a) Elapsed time measurement
DDDDB
Start Stop Re-start Stop Reset
(b) Split time measurement
DBBDB
Start Split Split release Stop Reset
(c) Split time and two finishes
DBDBB
Start Split
First runner
finishes.
Stop
Second runner
finishes.
Record time of
first runner.
Split release
Record time of
second runner.
Reset
E-15
Stopwatch Mode
The Stopwatch Mode lets you measure elapsed time,
split times, and two finishes. The range of the stopwatch
is 23 hour, 59 minutes, 59.99 seconds. The Stopwatch
Mode also features an Auto-Start function.
*The elapsed time hour count is shown in place of
the current time when a stopwatch operation is in
progress.
1/100 Seconds
Seconds
Minutes
Current time*
Mode indicator
E-14
To use the countdown timer
1. Press Dwhile in the Countdown Timer Mode to start the countdown.
2. Press Dagain to pause the countdown.
xYou can resume a countdown by pressing D.
3. Stop the countdown timer and then press Bto reset the countdown time to its
starting value.
xWhen the end of the countdown is reached, the alarm sounds for 10 seconds or until
you stop the alarm by pressing any button. The countdown operation stops and the
countdown time is automatically reset to its starting value after the alarm ends.
E-13
To set the countdown start time
1. Hold down Awhile in the Countdown Timer Mode. The hours digits flash on the
display because they are selected.
2. Press Cto change the selection in the following sequence.
CC
Hour Minutes Seconds
C
3. Press Dto increase the selected number or Bto decrease it. Holding down either
button changes the selection at high speed.
xPress Dand Bat the same time to clear the starting time to 0:00' 00".
xTo set the starting value of the countdown time to 24 hours, set 0:00' 00".
4. After you set the countdown start time, press Ato return to the Countdown Timer
Mode.
E-12
Countdown Timer Mode
The countdown 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.
*The countdown time hour count is shown in place
of the current time when the countdown start time
setting is one hour or greater, and while a countdown
operation is in progress.
1/10 Seconds
Seconds
Minutes
Mode indicator
Current time*
E-11
To turn the vibration alarm on and off
In the Timekeeping Mode, hold down Dfor about
two seconds to toggle the Vibration Alarm between on
(Vibration Alarm on indicator displayed) and off (indicator
not displayed).
xThe watch will vibrate when you toggle to on, and beep
when you toggle to off.
xTurning on the Vibration Alarm also disables the button
operation tone.
Vibration alarm on indicator
E-10
Vibration Alarm
When the Vibration Alarm is turned on, the watch vibrates instead of sounding an
alarm. This lets you use the watch without disturbing others by beeping sounds.
xThe Vibration Alarm can be used to replace alarm sounds in the Countdown Timer,
Stopwatch, and Alarm Modes.
xAll explanations in this manual use expressions such as “sounds the alarm” for
alarm operations. When the Vibration Alarm is turned on, these expressions should
be understood to mean “causes the watch to vibrate”.
xWatches with a metal band may produce a noise when a vibration operation
is performed. This is due to vibration of the metal band, and does not indicate
malfunction of the watch.

Operation Guide 3446
E-25
Dual Time
Other: LED (light-emitting diode); Vibration alarm
Battery: One lithium battery (Type: CR2032)
Battery life: 10 years under the following conditions
xOne 2-second light operation per day
xOne alarm operation per day
Note: One alarm operation is 20-second audible alarm or 10-second vibration
alarm.
Specifications are subject to change without notice.
E-24
Specifications
Accuracy at normal temperature: ± 30 seconds a month
Timekeeping: Hour, minutes, seconds, pm (P), day of the week, month, day
Time format: 12-hour and 24-hour formats
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Countdown Timer
Measuring unit: 1/10 second
Input range: 1 second to 24 hours
Stopwatch
Measuring unit: 1/100 second
Measuring capacity: 23 hours 59 minutes, 59.99 seconds
Measuring modes: Elapsed time, split time and two finishes
Other: Auto-Start
Alarm: Daily alarm, hourly time signal
E-23
4. After you set the time, press Ato return to the Dual Time Mode.
xIn the Dual Time Mode, the seconds count is synchronized with the seconds count
of the Timekeeping Mode.
xIn the Dual Time Mode, press Bto toggle between the 12-hour and 24-hour
formats.
E-22
Dual Time Mode
The Dual Time Mode lets you keep track of the time in
another time zone. You can also select the timekeeping
format (12-hour or 24-hour) separately from the
Timekeeping Mode.
To set the Dual Time
1. Hold down Awhile in the Dual Time Mode. The hour
digits flash on the display because they are selected.
2. Press Cto change the selection in the following
sequence.
Hour Minutes
C
3. Press Dto increase the selected digits and Bto
decrease them. Holding down either button changes
the selection at high speed.
Current time
Mode indicator
Hour
Minutes
E-21
To test the alarm sound
Hold down Bwhile in the Alarm Mode to sound the alarm.
xNote that pressing Balso changes the alarm and the hourly time signal ON/OFF
settings.
E-20
To turn the daily alarm and hourly time signal on and off
Press Bwhile in the Alarm Mode to change the status of the daily alarm and hourly
time signal in the following sequence.
B
Both OFF Daily Alarm
Only
Hourly Time
Signal Only
Both ON
B B B
xThe alarm on indicator ( ) and the Hourly Time Signal on indicator ( ) are shown
on the display in all modes while these functions are turned on.