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Power Saving Function - Casio 3047 Operation Manual

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Power Saving Function

When turned on, the Power Saving function puts the watch into a sleep state
automatically whenever it is left for a certain period in an area where it is dark.
The table below shows how watch functions are affected by the Power Saving
function.
Elapsed Time in
Display
Dark
60 to 70 minutes
Blank, with
PS flashing
Blank, with
6 or 7 days
PS not flashing
• Wearing the watch inside the sleeve of clothing can cause it to enter the
sleep state.
• The watch will not enter the sleep state while the digital time is between
6:00 AM and 9:59 PM. If the watch is already in the sleep state when the
digital time reaches 6:00 AM, however, it will remain in the sleep state.
• The watch will not enter the sleep state while it is in the Digital Compass,
Barometer/Thermometer, Depth Gauge, Receive, Countdown Timer, or
Stopwatch Mode. When the watch is left in any mode besides the
Countdown Timer and Stopwatch Mode, the watch will return to the
Timekeeping Mode automatically after a specific amount of time. Then if left
in the dark for the elapsed time indicated in the table above, the watch will
enter the sleep state.
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area. It can take up to two seconds for the
display to turn on.
• Press any button.
• Angle the watch towards your face for reading.
To turn Power Saving on and off
1. In the Timekeeping Mode, hold down E until
the city code starts to flash, which indicates
the setting screen.
2. Press D nine times until the Power Saving
on/off screen appears.
3. Press C to toggle Power Saving on (
off (
OFF
4. Press E to exit the setting screen.
• The Power Saving on indicator (PS) is on the
display in all modes while the Power Saving is
turned on.
Radio-controlled Atomic Timekeeping Precautions
• Strong electrostatic charge can result in the wrong time being set.
• The time calibration signal bounces off the ionosphere. Because of this,
such factors as changes in the reflectivity of the ionosphere, as well as
movement of the ionosphere to higher altitudes due to seasonal
atmospheric changes or the time of day may change the reception range of
the signal and make reception temporarily impossible.
• Even if the time calibration signal is received properly, certain conditions
can cause the time setting to be off by up to one second.
• The current time setting in accordance with the time calibration signal takes
priority over any time settings you make manually.
• The watch is designed to update the date and day of the week
automatically for the period January 1, 2001 to December 31, 2099. Setting
of the date by the time calibration signal cannot be performed starting from
January 1, 2100.
• This watch can receive signals that differentiate between leap years and
non-leap years.
• Though this watch is designed to receive both time data (hour, minutes,
seconds) and date data (year, month, day), certain signal conditions can
limit reception to time data only.
• If you are in an area where proper time calibration signal reception is
impossible, the watch keeps time within ±15 seconds a month at normal
temperature.
• If you have problems with proper time calibration signal reception or if the
time setting is wrong after signal reception, check your current city code,
and DST (summer time), and auto receive settings.
• The Home City setting reverts to the initial default of
whenever the battery power level drops to Level 5 or when you have the
rechargeable battery replaced. If this happens, change the Home City to the
setting you want.
Transmitters
The time calibration signal received by this watch depends on the currently
selected Home City code.
• When a U.S. time zone is selected, the watch receives the time calibration
signal transmitted from the United States (Fort Collins).
• When a Japanese time zone is selected, the watch receives the time
calibration signal transmitted from the Japan (Fukushima and Fukuoka/Saga).
• When a European time zone is selected, the watch receives the time
calibration signals transmitted from Germany (Mainflingen) and England
(Rugby). The following tables show the reception priority for the European
signals.
Operation Guide 3047
Operation
Display is off, but all functions are
enabled.
All functions are disabled, but
timekeeping is maintained.
ON
) and
).
BER
(Berlin)
When PAR, BER, or ATH is selected as the Home City code:
In this case:
The watch does this:
The first signal search
1. Checks the Mainflingen signal first.
operation after the Home
2. If the Mainflingen signal cannot be
City code has been changed
received, checks the Rugby signal.
The second and
1. Checks the signal of the transmitter of the first
subsequent signal searches
receive operation (Rugby or Mainflingen).
2. If the checked signal cannot be received,
checks the other signal.
When LON is selected as the Home City code:
In this case:
The watch does this:
The first signal search
1. Checks the Rugby signal first.
operation after the Home
2. If the Rugby signal cannot be received,
City code has been changed
checks the Mainflingen signal.
The second and
1. Checks the signal of the transmitter of the first
subsequent signal searches
receive operation (Rugby or Mainflingen).
2. If the checked signal cannot be received,
checks the other signal.
Timekeeping
• The year can be set in the range of 2000 to 2099.
• The 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 or
when battery power drops to Level 5.
• The current time for all city codes in the Timekeeping Mode is calculated in
accordance with the Greenwich Mean Time (GMT) differential of each zone,
based on your Home City time setting.
• GMT differential is calculated by this watch based on Universal Time
Coordinated (UTC*) data.
*UTC is the world-wide scientific standard of timekeeping. It is based upon
carefully maintained atomic (cesium) clocks that keep time accurately to
within microseconds. Leap seconds are added or subtracted as necessary
to keep UTC in sync with the Earth's rotation. The reference point for UTC
is Greenwich, England.
Illumination Precautions
• The electro-luminescent panel that provides illumination loses power after
very long use.
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• The watch may emit an audible sound whenever the display is illuminated.
This is due to vibration of the EL panel used for illumination, and does not
indicate malfunction.
• Frequent use of illumination runs down the battery.
• Illumination is disabled while the watch is taking a depth reading (every
three seconds).
Auto light switch precautions
• The auto light switch is turned off automatically whenever battery power is
at Level 4.
• Wearing the watch on the inside of your wrist, movement of your arm, or
vibration of your arm can cause frequent activation of the auto light switch
and illumination of the display. To avoid running down the battery, turn off
the auto light switch whenever engaging in activities that might cause
frequent illumination of the display.
• Note that wearing the watch under your sleeve while the auto light switch is
turned on can cause frequent illumination of the display and can run down
the battery.
• Illumination may not turn on if the face of the
More than 15 degrees
watch is more than 15 degrees above or below
too high
parallel. Make sure that the back of your hand
is parallel to the ground.
• Illumination turns off in about one second, even
if you keep the watch pointed towards your
face.
• Static electricity or magnetic force can interfere with proper operation of the
auto light switch. If illumination does not turn on, try moving the watch back
to the starting position (parallel with the ground) and then tilt it back toward
you again. If this does not work, drop your arm all the way down so it hangs
at your side, and then bring it back up again.
• Under certain conditions, illumination may not turn on until about one
second after you turn the face of the watch towards you. This does not
necessarily indicate malfunction of the auto light switch.
• You may notice a very faint clicking sound coming from the watch when it is
shaken back and forth. This sound is caused by mechanical operation of
the auto light switch, and does not indicate a problem with the watch.
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