Stopwatch; Countdown Timer; Illumination; To Turn The Hourly Time Signal On And Off - Casio 3405 Operation Manual

Operation Guide 3405

To turn the Hourly Time Signal on and off

1. In the Alarm Mode, use D to select the Hourly Time
Hourly time signal
SI
Signal (
on indicator
2. Press B to toggle it on (
The Hourly Time Signal on indicator is shown on the
display in all modes while this function is turned on.
On/Off status
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To measure times with the stopwatch

Elapsed Time
D D D
➤ ➤
Start Stop Re-start
Split Time
D B B
➤ ➤
Start Split Split release
(SPL displayed)
Two Finishes
D B D
➤ ➤
Start Split Stop
First runner finishes. Second runner
Display time of first finishes.
runner.
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To configure 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 flash, which indicates the
setting screen.
If the countdown start time is not displayed, use the
procedure under "To use the countdown timer" (page
E-45) to display it.
2. Press C to move the flashing between the hour and
minute settings.
3. When a setting is flashing, use D (+) and B (–) to
change it.
To specify a countdown start time of 24 hours, set
.
4. Press A to exit the setting screen.
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Illumination

This watch has an EL (electro-luminescent) panel that
Auto light switch on
causes the entire display to glow for easy reading in the
indicator
dark. The watch's auto light switch turns on illumination
automatically when you angle the watch towards your
face.
The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
See "Illumination Precautions" (page E-73) for other
important information about using illumination.
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About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you position
your wrist as described below in any mode. Note that this watch features a "Full Auto
EL Light," so the auto light switch operates only when available light is below a certain
level. It does not turn on the backlight under bright light.
Moving the watch to a position that is parallel to the ground and then tilting it towards
you more than 40 degrees causes illumination to turn on.
Wear the watch on the outside of your wrist.
Parallel to
ground
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).
) and off ( ).
B
D
➤ ➤
Stop Clear
B
D
➤ ➤
Stop Clear
B B
➤ ➤
Split release Clear
Display time of
second runner.
More than 40°

Stopwatch

The stopwatch lets you measure elapsed time, split times,
Minutes Seconds
and two finishes.
The display range of the stopwatch is 23 hours, 59
minutes, 59.99 seconds.
The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to
Hours
elapsed time measurement.
1/100 second
All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C (page
E-9).

Countdown Timer

You can set the countdown timer within a range of one
minute to 24 hours. An alarm sounds when the countdown
reaches zero.
All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C (page E-9).
Countdown End Beeper
Hours
Minutes The countdown end beeper lets you know when the
countdown reaches zero. The beeper stops after about 10
Seconds
seconds or when you press any button.

To use the countdown timer

Press D while in the Countdown Timer Mode to start the
Current timer time
countdown timer.
The countdown timer operation continues even if you
exit the Countdown Timer Mode.
Press D while a countdown operation is in progress to
pause it. Press D again to resume the countdown.
To stop a countdown operation completely, first pause it
(by pressing D), and then press B. This returns the
countdown time to its starting value.
Timer start time

To illuminate the display manually

In any mode, press L to turn on illumination.
The above operation turns on illumination regardless of the current auto light switch
setting.
You can use the procedure below to select either 1.5 seconds or 3 seconds as the
illumination duration. When you press L, the illumination will remain on for about
1.5 seconds or 3 seconds, depending on the current illumination duration setting.

To specify the illumination duration

1. In the Timekeeping Mode, hold down A until the
display contents start to flash. This is the setting screen.
2. Press C 10 times until the current illumination duration
setting (LT1 or LT3) appears.
3. Press D to toggle the setting between LT1
(approximately 1.5 seconds) and LT3 (approximately 3
seconds).
4. Press A to exit the setting screen.
Warning!
Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
startle or distract others around you.
When you are wearing the watch, make sure that its auto light switch is turned
off before riding a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.

To turn the auto light switch on and off

In the Timekeeping Mode, hold down L for about three seconds to toggle the auto
light switch on (auto light switch on indicator displayed) and off (auto light switch on
indicator not displayed).
The auto light switch on indicator is on the display in all modes while the auto light
switch is turned on.
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