Casio 3140 Owner's Manual
MA0810-EA
Operation Guide 3140
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
This watch does not have a time zone that corresponds to the UTC offset of
•
–
3.5 hours. Because of this, the radio-controlled timekeeping and World Time
functions will not display the correct time for Newfoundland, Canada.
Caution!
Your watch is shipped with its Auto Display feature (which continually changes the
contents of the digital display) turned on. Calibration signal reception is disabled while
Auto Display is turned on.
Press any button to turn off Auto Display and return to the Timekeeping Mode.
About This Manual
General Guide
Press C to change from mode to mode.
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In any mode (except when a setting screen is on the display), press B to illuminate
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the display.
Timekeeping Mode World Time Mode Countdown
Button operations are indicated using the letters shown
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in the illustration.
Each section of this manual provides you with the
•
information you need in order to perform operations in
each mode. Further details and technical information
can be found in the “Reference” section.
Timer Mode
Alarm ModeStopwatch Mode
Press .
Radio-controlled Atomic Timekeeping
Month – Day
Day of week
Year
PM indicator
Home Time
(Hour : Minutes Seconds)
When using the watch outside the areas covered by the time signal transmitters, you
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will have to adjust the current time setting manually as required. See “Timekeeping”
for more information about manual time settings.
The U.S. time calibration signal can be picked up by the watch while in North
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America. The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
To specify your Home City
City code
City
Code
HNL Honolulu YWG Winnipeg LIS Lisbon ATH Athens
ANC Anchorage CHI Chicago LON London MOW Moscow
YVR Vancouver MIA Miami MAD Madrid
LAX Los Angeles YTO Toronto PAR Paris
YEA Edmonton NYC New York ROM Rome
DEN Denver YHZ Halifax BER Berlin
MEX Mexico City YYT St. Johns STO Stockholm
3. Press A twice to exit the setting screen.
U.S. Signal U.K. Signal
City
Name
This watch receives a time calibration signal and updates
its time setting accordingly.
Supported time calibration signals: United States (Fort
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Collins), England (Anthorn).
See the information under “Signal Reception
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Troubleshooting” if you experience problems with time
calibration signal reception.
Current Time Setting
This watch adjusts its time setting automatically in
accordance with a time calibration signal. You can also
perform a manual procedure to set the time and date,
DST
when necessary.
indicator
The fi rst thing you should do after purchasing this
•
watch is to specify your Home City (the city where you
normally will use the watch). For more information,
see “To specify your Home City” .
1. In the Timekeeping Mode, hold down A until the city
code starts to fl ash, which indicates the setting screen.
2. Press D (east) and B (west) to select the city code you
want to use as your Home City.
Time calibration signal reception is supported when
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any one of the city codes shown in the table below is
selected as your Home City.
City
Code
City
Name
City
Code
City
Name
City
Code
City
Name
Important!
Normally, your watch should show the correct time as soon as you select your Home
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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.
The watch will receive the time calibration signal automatically from the applicable
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transmitter (in the middle of the night) and update its settings accordingly. For
information about the relationship between city codes and transmitters, see “Home
City Codes and Transmitters”.
Under factory default settings, auto receive is turned off for all of the following city
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codes: HNL (Honolulu), ANC (Anchorage), ATH (Athens), and MOW (Moscow). For
details about turning on auto receive for these city codes, see “To turn auto receive
on and off”.
You can disable time signal reception, if you want. See “To turn auto receive on and
•
off” for more information.
See the maps under “Approximate Reception Ranges” for information about the
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reception ranges of the watch.
If you are in an area that does not use Daylight Saving Time (summertime), turn off
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the DST setting.
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
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With auto receive, the watch receives the time calibration signal automatically up to
six times a day. When any auto receive is successful, the remaining auto receive
operations are not performed. For more information, see “About Auto Receive”.
Manual Receive
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Manual receive lets you start a time calibration receive operation with the press of a
button. For more information, see “To perform manual receive”.
1
Operation Guide 3140
Important!
When getting ready to receive the time calibration signal, position the watch as
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shown in the nearby illustration, with its 12 o’clock side facing towards a window.
This watch is designed to receive a time calibration signal late at night. Because of
this, you should place the watch near a window as shown in the illustration when
you take it off at night. Make sure there are no metal objects nearby.
12 o’clock
Make sure the watch is facing the right way.
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Proper signal reception can be diffi cult or even impossible under the conditions listed
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below.
Inside or
among
buildings
Signal reception normally is better at night than during the day.
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Time calibration signal reception takes from two to seven minutes. Take care that
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you do not perform any button operations or move the watch during this time.
The time calibration signal the watch will attempt to pick up depends on its current
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Home City code setting as shown below.
Inside a
vehicle
Near
household
appliances,
office
equipment,
or a mobile
phone
Near a
construction
site, airport,
or other
sources of
electrical
noise
or
Near
high-tension
power lines
Among or
behind
mountains
Home City Codes and Transmitters
Home City Code Transmitter Frequency
HNL*, ANC*, YVR, LAX, YEA,
DEN, MEX, YWG, CHI, MIA,
YTO, NYC, YHZ, YYT
LIS, LON, MAD, PAR, ROM,
BER, STO, ATH*, MOW*
* The areas covered by the HNL , ANC , ATH , and MOW city codes are quite far
from the time calibration signal transmitters, and so certain conditions may cause
problems with signal reception.
Approximate Reception Ranges
1,500 kilometers
Anthorn
500 kilometers
Signal reception may not be possible at the distances noted below during certain
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times of the year or day. Radio interference may also cause problems with reception
Anthorn (England) transmitter: 500 kilometers (310 miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
In April 2007, the U.K. signal transmitter was moved from Rugby to Anthorn, which
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resulted in a slight shift in the approximate reception range of the signal. The shift is
so slight that there is virtually no change in the ability to receive the signal
Even when the watch is within the reception range of a transmitter, signal reception
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may be impossible at times due to the effects of geographic contours, structures,
weather, the season of the year, the time of day, radio interference, etc. Note that
the signal becomes weaker at distances of approximately 500 kilometers from the
transmitter, which means that the infl uence of the conditions listed above becomes
even greater
About Auto Receive
The watch receives the time calibration signal automatically up to six times a day.
When any auto receive is successful, the remaining auto receive operations are not
performed. The reception schedule (calibration times) depends on your currently
selected Home City, and whether standard time or Daylight Saving Time is selected
for your Home City.
HNL, ANC, YVR,
LAX, YEA, DEN,
MEX, YWG, CHI,
MIA, YTO, NYC,
YHZ, YYT
LIS, LON
MAD, PAR, ROM,
BER, STO
ATH
MOW
U.K. Signal
U.K. signal transmitter approximate
reception range as of April 2007
.
Your Home City
Standard Time
Daylight
Saving Time
Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Daylight
Saving Time
Standard Time 2:00 am 3:00 am 4:00 am 5:00 am
Daylight
Saving Time
Standard Time 3:00 am 4:00 am 5:00 am
Daylight
Saving Time
Standard Time 4:00 am 5:00 am
Daylight
Saving Time
Fort Collins, Colorado
(the United States)
60.0 kHz
Anthorn (England) 60.0 kHz
U.S. Signal
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
.
Auto Receive Start Times
123456
Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Midnight
*
2:00 am 3:00 am 4:00 am 5:00 am
3:00 am 4:00 am 5:00 am
4:00 am 5:00 am
5:00 am
Midnight*1:00 am*2:00 am*3:00 am
Midnight*1:00 am*2:00 am*3:00 am
Midnight*1:00 am*2:00 am*3:00 am*4:00 am
Midnight*1:00 am
*
Midnight*1:00 am
Midnight*1:00 am*2:00 am
Midnight*1:00 am*2:00 am
*
*
*
*
*
*
* Next day
Note
When a calibration time is reached, the watch will receive the calibration signal
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only if it is in either the Timekeeping Mode or World Time Mode. Reception is not
performed if a calibration time is reached while you are confi guring settings.
Auto receive of the calibration signal is designed to be performed early in the
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morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can receive the signal easily.
The watch receives the calibration signal for two to seven minutes everyday when
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the time in the Timekeeping Mode reaches each of the calibration times. Avoid
performing any button operation within seven minutes before or after any one of the
calibration times. Doing so can interfere with correct calibration.
Remember that reception of the calibration signal depends on the current time in the
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Timekeeping Mode. The receive operation will be performed whenever the display
shows any one of the calibration times, regardless of whether or not the displayed
time actually is the correct time.
Calibration signal reception is disabled while a countdown timer operation is in
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progress.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received.
For best reception, be sure to keep the watch in a location where signal strength is
strongest.
Receivingindicator
Even in an area where signal strength is strong, it takes about 10 seconds for signal
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reception to stabilize enough for the receiving indicator to indicate signal strength.
Use the receiving indicator as a guide for checking signal strength and for fi nding the
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best location for the watch during signal receive operations.
Following reception of the time calibration signal and calibration of the watch’s time
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setting, the Level 3 receiving indicator will remain on the display in all modes. The
Level 3 receiving indicator will not be displayed if signal reception was unsuccessful
or after you adjust the current time setting manually
The Level 3 receiving indicator is displayed only when the watch is able to receive
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both time and date data successfully. It does not appear when only time data is
received.
The Level 3 receiving indicator indicates that at least one of the auto calibration
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signal receive operations was successful. Note, however, that the Level 3 receiving
indicator is cleared from the display when the fi rst auto receive operation of the day
is performed.
To perform manual receive
.
Receivingindicator
Note
To interrupt a receive operation and return to the Timekeeping Mode, press D .
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If the receive operation is unsuccessful, the message
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about one or two minutes. After that, the watch returns to the Timekeeping Mode.
You can also change from the Last Signal or
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screen by pressing D .
Calibration signal reception is disabled while a countdown timer operation is in
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progress.
To turn auto receive on and off
On/Off Status
4. Press A to exit the setting screen.
For information about city codes that support signal receive, see “To specify your
•
Home City”.
To display the Last Signal screen
In the Timekeeping Mode, press D to display the Last Signal screen (indicated by
). The Last Signal screen shows the date and time of the last successful time
GET
calibration signal reception.
Current Time and Date Screen Last Signal Screen
Dayofweek
Month – Day
PM indicator
Home Time
(Hour : Minutes Seconds)
Weak
(Level 0)
.
1. Place the watch on a stable surface so its top (12
o’clock side) is facing towards a window.
2. In the Timekeeping Mode, hold down D for about two
seconds until RC! appears on the display.
Time calibration signal reception takes from two to
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seven minutes. Take care that you do not perform any
button operations or move the watch during this time.
After signal reception is complete, the display of the
•
watch changes to the Last Signal screen.
appears on the display for
ERR
screen to the normal timekeeping
ERR
1. In the Timekeeping Mode, press D to display the Last
Signal screen.
2. Hold down A until the receiving indicator and current
auto receive setting ( or ) start to fl ash.
This is the setting screen.
Note that the setting screen will not appear if the
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currently selected Home City is one that does not
support time calibration reception.
3. Press D to toggle auto receive on (
( ).
Year
Receive date
Press .
DST indicator
Receive time
Strong
(Level 3)
) and off
2
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