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Power Saving; Display Illumination - Casio 3311 Operation Manual

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❚ Charging Guide
Required Daily Charging Time
• The following is the daily
Starting from a full charge, the watch
amount of charging required
should be able to continue operating
each day to support the
for about five months without further
operations under "Daily Use".
charging under the conditions
Approximate
described below.
Exposure Level
Exposure
(Brightness)
Daily Use (All time values are
Outdoor Sunlight
approximate.)
5 minutes
(50,000 lux)

• Display Illumination:

Sunlight Through
1.5 seconds
a Window
24 minutes
• Alarms: 10 seconds
(10,000 lux)
• Signal reception: 5 times
Daylight Through a
Window on an Overcast
48 minutes
Making sure the watch is regularly
Day (5,000 lux)
exposed to light ensures stable
Indoor
Fluorescent
operation.
8 hours
Lighting (500 lux)
• Charge Times Required to Advance to a Higher Level
Approximate Exposure Time
Exposure Level
(Brightness)
Level 4
\
Level 3
\
Level 2
\
Level 1
Outdoor Sunlight
1 hour
10 hours
5 hours
(50,000 lux)
Sunlight Through a
4 hours
48 hours
22 hours
Window (10,000 lux)
Daylight Through a
Window on an Overcast
8 hours
99 hours
46 hours
Day (5,000 lux)
Indoor Fluorescent
76 hours
– – –
Lighting (500 lux)
• Note that the above charging times are for reference only. Actual
charging time depends on a variety of environmental factors.
Display Illumination
Pressing the B button in any mode illuminates the digital display
for easy reading.
You can specify 1.5 seconds or 2.5 seconds as the duration of
display illumination.
Operation Guide 3311/3356
Time
– – –
❚ To specify the illumination duration
1.
Timekeeping Mode
In the Timekeeping Mode
hold down the A
A
A
A button
A
for about two seconds.
• This will display the
transmitter selection mode
setting screen and cause the
second hand to move to the
12 o'clock position.
AT (Auto Switching)
2.
A
A button once
A
Press the A
A
and then press the C
C
C
C
C
button.
• This causes the seconds
count to flash on the display.

Power Saving

The Power Saving feature of the watch is turned on at the factory.
• Power Saving causes the watch to automatically enter a sleep state and save power whenever the watch is left in the dark.
• Note that the watch may also enter the sleep state if the watch is blocked from light by your sleeve.
❚ How the sleep state works
Display sleep state
The display sleep state is triggered whenever the watch is left in
the dark for three or four days.
• The display sleep state causes the display to go blank, except for a
flashing Power Saving indicator. Alarms and the hourly time signal
continue to operate normally while the watch is in the display sleep
state. Even when the watch is in the display sleep state, digital-
analog time coordination and auto signal receive are both performed.
Function sleep state
The function sleep state is triggered whenever the watch is left in
the dark for four days.
• Alarms and the hourly time signal are also disabled while the
watch is in the function sleep state. In the function sleep state,
analog timekeeping is disabled, and auto signal receive is not
performed.
• Digital timekeeping functions continue to operate normally in the
function sleep state.
Power Saving
Indicator
1.5 seconds
3.
Press the B
B button to
B
B
B
select the display
illumination duration you
want.
• Each press of the B button
toggles the display
illumination duration between
1.5 seconds and 2.5 seconds.
An indicator on the display
shows which setting is
currently selected.
2.5 seconds
4.
When the setting is the
way you want, press the
A
A
A
A
A button.
• This will exit the setting
screen and return to the
Timekeeping Mode screen.
Also, the second hand will
move automatically to the
current second, as kept by
digital timekeeping.
• The display also will exit the
setting screen automatically if
you do not perform any
operation for about two or
three minutes.
❚ To recover from the sleep state
Move the watch to a brightly lit location or press any button.
• It can take up to two seconds before display figures re-appear
after you place the watch in a well-lit area.
❚ To turn Power Saving on and off
Use the procedure under "To configure digital settings" to turn
Power Saving on or off.
Leaving the watch in a drawer or anywhere else it is dark can
cause Power Saving to trigger in order to conserve battery
power.
(Toggle)
2

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