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Operation Guide 2869 2870
1
MO0312-EA
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright
light.
••
••
• Be sure to read “Battery” of this manual for important
information you need to know when exposing the watch to bright light.
If the display of the watch is blank...
If the sleep indicator (SLEEP ) is displayed, it means the
watch’s Power Saving function has turned off the display
to conserve power. Power Saving automatically turns off
the display and enters a sleep state whenever the watch
is left for a certain period where it is dark.
• The initial factory default setting is Power Saving on.
• The watch recovers from the sleep state if you move it to
a well-lit area
*
, if you press any button, or if you angle
the watch towards your face for reading.
*
It can take up to two seconds for the display to turn on.
• See “Power Saving Function” for more information.
Sleep indicator
About This Manual
• Button operations are indicated using the letters shown
in the illustration.
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
(Light)
General Guide
• Press C to change from mode to mode.
• In any mode, press L to illuminate the display.
Stopwatch Mode
Timekeeping Mode
Alarm Mode
▲
▲
▲
Press C.
▲
World Time Mode
Time Recorder Mode
▲
Radio-controlled Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
The time calibration signal includes both Standard Time and Daylight Saving Time
(summer time) data.
• In the Timekeeping Mode, press D to display the Last Signal screen. The Last
Signal screen shows the date and time of the last successful time cailbration signal
reception.
Last Signal Screen
▲
Press D.
Day of week
Receive time
Month – Day
Current Time Screen
PM
indicator
▲
Receive date
Hour : Minutes Seconds
• This watch is designed to pick up the time calibration signal transmitted from Rugby,
England and the signal from Mainflingen, Germany.
Current Time Setting
This watch automatically adjusts its time setting in accordance with a time calibration
signal. You can also perform a manual procedure to set the time and date, when
necessary.
• The first thing you should do after purchasing this watch is to set your Home City,
which is the city where you will normally use the watch. For more information, see
“To set your Home City” below.
• When using the watch that is outside of the range of the transmitters in Rugby and
Mainflingen, you need to manually adjust the time as required. See “Timekeeping”
for information about manual settings.
To set your Home City
1. In the Timekeeping Mode, hold down A until the city
code setting starts to flash, which indicates the setting
screen.
2. Use D(east) and B(west) to select the city code you
want to use as your Home City.
• The following are the city codes for major cities in the
Western Europe time zones.
LON: London
PAR and BER: Paris, Berlin, Milan, Rome,
Amsterdam, Hamburg, Frankfurt, Vienna,
Barcelona, Madrid
3.Press C to display the transmitter mode setting screen.
• If the displayed transmitter mode indicator shows
something other than
qvtA, use D to display qvtA
before advancing to the next step.
4. Press A twice to exit the setting screen.
• The first press of A displays the 12/24-hour setting
screen. Pressing A again exits the setting screen.
City code
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Transmitter mode
indicator
Important!
• Normally, your watch should show the correct time as soon as you select your Home
City code. If it does not, it should adjust automatically after the next auto receive
operation (in the middle of the night). You can also perform manual receive or you
can set the time manually.
• If you are in an area that does not use Daylight Saving Time (summer time), turn off
the DST setting.
• See “Transmitters” for details about the transmitter mode indicator.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive
and
manual receive
.
• Auto Receive
With auto receive, the watch automatically picks up the time calibration signal five
times a day at 0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. For more
information, see “About Auto Receive”.
• Manual Receive
Manual receive lets you start a time calibration receive operation with the press of a
button. For more information, see “To perform manual receive”.
Important!
• Position the watch as shown in the nearby illustration, with its 12 o’clock side facing
towards a window. Make sure there are no metal objects nearby.
Resin Band
Metal Band
• The watch should not be on its side or facing the wrong way.
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
• Signal reception is normally better at night than during the day.
• Time calibration signal reception takes from two to five minutes, but in some cases it
can take as long as 12 minutes. Take care that you do not perform any button
operations or move the watch during this time.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances or
office
equipment,
or a mobile
phone
Near a
construction
site, airport, or
other sources
of electrical
noise
Near high-
tension
power lines
Among or
behind
mountains
Rugby
Mainflingen
1,500 kilometers
500 kilometers