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Casio QW2471 Manual

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USER’S GUIDE 2471
7
Auto Return Features
• The watch automatically returns to the Timekeeping Mode if you do not
perform any button operation for two or three minutes in the Digital
Compass Mode or Barometer/Thermometer Mode.
• If you do not perform any button operation while in the Altimeter Mode, the
watch automatically returns to the Timekeeping Mode after four or five
hours in the Short Mode, or after nine or 10 hours in the Long Mode.
• If you leave a screen with flashing digits on the display for two or three
minutes without performing any operation, the watch automatically saves
anything you have input up to that point and exits the setting screen.
Power Saving Function
When turned on, the Power Saving function automatically puts the watch into
a sleep state whenever it is left in an area where it is dark for a certain period.
The table below shows how watch functions are affected by the Power Saving
function.
• Wearing watch inside the sleeve of clothing can cause it to enter the sleep
state.
Elapsed Time in
Dark
30 to 40 minutes
6 or 7 days
Display
Blank, with
SLEEP flashing
Blank, with
SLEEP not
flashing
Operation
All functions enabled, except for
the display
Daily alarm, Hourly Time Signal,
sensor measurements disabled
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 five 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 A until
the seconds start to flash, which indicates the
setting screen.
2. Press D eight times until the Power Saving
on/off screen appears.
3. Press E to toggle Power Saving on (
ON) and
off (
OFF).
4. Press A to exit the setting screen.
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Data and Setting Scrolling
The E and B buttons are used in various modes and setting screens to
scroll through data on the display. In most cases, holding down these buttons
during a scroll operation scrolls through the data at high speed.
Timekeeping
• Resetting the seconds to
0000
0000
00 while the current count is in the range of 30 to
59 causes the minutes to be increased by 1. In the range of 00 to 29, the
seconds are reset to
0000
0000
00 without changing the minutes.
• The year can be set in the range of 2000 to 2039.
• The watch’s built-in full automatic calendar automatically makes allowances
for different month lengths and leap years. Once you set the date, there
should be no reason to change it except when battery power drops to Level
4.
12-hour/24-hour Timekeeping Formats
The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode
is also applied in all modes.
• With the 12-hour format, the P (PM) indicator appears on the display for
times in the range of noon to 11:59 p.m. and no indicator appears for times
in the range of midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59,
without any indicator.
Backlight Precautions
• The electro-luminescent panel that provides illumination loses power after
very long use.
• The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
• The backlight automatically turns off 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 the backlight runs down the battery.
Auto light switch precautions
• Wearing the watch on the inside of your wrist and movement or vibration of
your arm can cause the auto light switch to activate and illuminate 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.
• The backlight may not light if the face of the
watch is more than 15 degrees above or below
parallel. Make sure that the back of your hand
is parallel to the ground.
• The backlight turns off in about two seconds,
even if you keep the watch pointed towards
your face.
More than 15 degrees
too high
• Static electricity or magnetic force can interfere with proper operation of the
auto light switch. If the backlight does not light, 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, the backlight may not light until about one second
after you turn the face of the watch towards you. This does not necessarily
indicate malfunction of the backlight.
Digital Compass Precautions
This watch features a built-in magnetic bearing sensor that detects terrestrial
magnetism. This means that north indicated by this watch is magnetic north,
which is somewhat different from true polar north. The magnetic north pole is
located in northern Canada, while the magnetic south pole is in southern
Australia. Note that the difference between magnetic north and true north as
measured with all magnetic compasses tends to be greater as one gets
closer to either of the magnetic poles. You should also remember that some
maps indicate true north (instead of magnetic north), and so you should make
allowances when using such maps with this watch.
Location
• Taking a direction reading when you are near a source of strong magnetism
can cause large errors in readings. Because of this, you should avoid taking
direction readings while in the vicinity of the following types of objects:
permanent magnets (magnetic necklaces, etc.), concentrations of metal
(metal doors, lockers, etc.), high tension wires, aerial wires, household
appliances (TVs, personal computers, washing machines, freezers, etc.)
• Accurate direction readings are impossible while in a train, boat, air plane,
etc.
• Accurate readings are also impossible indoors, especially inside ferro-
concrete structures. This is because the metal framework of such structures
picks up magnetism from appliances, etc.
Storage
• The precision of the bearing sensor may deteriorate if the watch becomes
magnetized. Because of this, you should be sure to store the watch away
from magnets or any other sources of strong magnetism, including:
permanent magnets (magnetic necklaces, etc.) and household appliances
(TVs, personal computers, washing machines, freezers, etc.)
• Whenever you suspect that the watch may have become magnetized,
perform one of the calibration procedures under “Calibrating the Bearing
Sensor”.
Calibrating the Bearing Sensor
Whenever you suspect that direction readings produced by the watch are
wrong, you should calibrate it. You can use either one of two calibration
procedures:
bidirectional calibration
or
northerly calibration
.
Use bidirectional calibration when you want to take readings within an area
exposed to magnetic force. This type of calibration should be used if the
watch become magnetized for any reason.
With northerly calibration, you “teach” the watch which way is north (which
you have to determine with another compass or some other means). You
could use this calibration procedure, for example, to set the watch to indicate
true north instead of magnetic north.
Important!
• If you want to perform both bidirectional and northerly calibration, be sure
to perform bidirectional calibration first, and then perform northerly
calibration. This is necessary because bidirectional calibration cancels any
previously set northerly calibration setting.
• The more correctly you perform bidirectional calibration, the better the
accuracy of the bearing sensor readouts. You should perform bidirectional
calibration whenever you change environments where you use the bearing
sensor, and whenever you feel that the bearing sensor is producing
incorrect readings.
7


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