Casio 3760 Operation Manual

MA0410-EA
Modes and Display Screens
Each press of the C C C C button sounds a confirmation tone and cycles through available modes in the sequence shown below. C
• The display will automatically revert to the Timekeeping screen if you leave the Alarm or Hand Setting screen displayed without performing
any operation for about two or three minutes.
Timekeeping Mode
(Light)
(Screen Switching)
Button Button
Button Button
(Mode switching)
Days of the Week
SUN: Sunday MON: Monday TUE: Tuesday
WED: Wednesday THU: Thursday FRI: Friday
SAT: Saturday
How a Radio-controlled Watch Works
What is a radio-controlled watch?
Your radio-controlled watch is designed to receive a time
calibration signal that contains standard time data, and adjust its
current time setting accordingly.
Signal is received
Long-wave
using built-in antenna.
time
Transmitter
calibration
signal
Watch decodes
received data
and converts it
Signal data
to time data.
Decode
Time data
Time is adjusted
Cesium
according to
atomic clock
Watch Internally
time data.
After the watch receives the Standard Time signal, it performs
internal calculations to determine the current time. Because of
this, there may be an error of up to one second in the
displayed time.
Operation Guide 3760
Changing Display Screen Contents
Each press of the button cycles display contents in the
➡ ➡ ➡
following sequence: Day of the Week Date Seconds
Current Time
Day of the week Date
Day of the week Month/Day
Current Time Screen Seconds Screen
PM indicator
(no indicator for AM)
Hour Minutes Seconds

Calibration Signal

• The Japanese calibration signal (Call Sign: JJY) is maintained by
the National Institute of Information and Communications
Technology (NICT). It is a long wave signal transmitted 24 hours a
day from the Mt. Otakadoya transmitter (40kHz) located in
Tamura-gun, Fukushima Prefecture, and from the Mt. Hagane
transmitter (60kHz) located on the border between Saga
Prefecture and Fukuoka Prefecture.
• The U.S. calibration signal (Call Sign: WWVB) is transmitted by
the National Institute of Standards and technology from Fort
Collins, Colorado.
Note that transmission of the time calibration signal may be
interrupted occasionally due to maintenance, lightning, etc.
World Time Mode
City Code
Current Time in Selected City
Hand Setting Mode
Mode Indicator
Reception Range
This watch is designed to receive the standard time calibration signal of Japan (JJY) or of the United States (WWVB). The signal that is
received depends on the current Home City setting.
• For information about selecting a Home City, see "Configuring Home City Settings". For information about city codes, see the "World Time
City Code List".
Home City
TYO Either the Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal (60kHz)
LAX, DEN, CHI, NYC Fort Collins, Colorado signal
1000km
Japan Transmitter
Locations
Mt. Otakadoya
500km (40kHz)
500km
Mt. Hagane
(60kHz)
1000km
• Under optimum conditions, the calibration signal should be
receivable up to 1,000 kilometers from the transmitter.
Note that the wave is relatively weak at distances greater
than 500km, so reception may be poor at long distances.
• Geographic contours, nearby buildings, seasonal conditions, the time of day, can even make reception impossible even when you are within
range of the transmitter.
• Best reception is possible late at night.
Alarm Mode
Alarm Hourly Time Signal
• Alarm off • Hourly Time Signal off
Stopwatch Mode
Mode Indicator
Elapsed Time
Transmitter
U.S. Transmitter
Location
3000km
1000km
Fort Collins
• Under optimum conditions, the calibration signal should be
receivable up to 3,000 kilometers from the transmitter.
Note that the wave is relatively weak at distances greater
than 1,000km, so reception may be poor at long distances.
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