— 2 —
2. OPERATION CHART: MODULE QW-3390
Each press of the
CCCCC
button sounds a confirmation tone and cycles through available modes in the sequence shown below
.
•
The display will automatically revert to the
T
imekeeping screen if you leave the
Alarm or Hand Setting screen displayed without
performing
any operation for about two or three minutes.
W
o
rld T
ime Mode
Alarm Mode
Hand Setting Mode
Stopwatch Mode
Current T
ime
in Selected City
City Code
Alarm
•
Alarm of
f
Hourly T
ime
Signal
•
Hourly
T
ime Signal of
f
Elapsed T
ime
Mode Indicator
Mode
Indicator
T
imekeeping Mode
(Light)
(Screen Switching)
(Mode switching)
Month.Day
Day of the W
e
ek
Seconds
Hour
PM indicator
(no indicator for
AM)
Minutes
Seconds Screen
Current T
ime Screen
Calendar Screen
2-second interval
Days of the W
eek
SUN: Sunday
MON: Monday
TUE:
T
uesday
WED: W
e
dnesday
THU:
Thursday
FRI: Friday
SA
T
: Saturday
Button
Button
Button
Button
Changing Display Screen Contents
Each press of the
button cycles display contents in the
following sequence: Calendar Screen
Seconds Screen
Current T
ime
Screen.
Modes and Display Screens
What is a radio-controlled watch?
Y
our radio-controlled watch is designed to receive a time
calibration signal that contains standard time data, and adjust its
current time setting accordingly
.
Signal data
Cesium
atomic
clock
T
ransmitter
Internally
Decode
W
atch
T
ime data
Signal is received
using built-in antenna.
W
atch decodes
received data
and converts it
to time data.
T
ime is adjusted
according to time
data.
Long-
wave time
calibration
signal
After the watch receives the Standard
T
ime 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.
Calibration Signal
•
The Japanese calibration signal (Call Sign: JJY) is maintained by
the National Institute of Information and Communications
T
echnology (NICT). It is a long wave signal transmitted 24 hours a
day from the Mt. Otakadoya transmitter (40kHz) located in
T
amura-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 standard wave may be
interrupted occasionally due to maintenance, lightening, etc.
How a Radio-controlled Watch Works
Reception Range
This watch is designed to receive the standard time calibration signal of Japan (JJY) or of the United States (WWVB).
The signa
l that is
received depends on the current Home
T
ime setting.
•
For information about selecting a Home City
, see
“Configuring Home
T
ime Settings
”. For information about city codes, see the
“W
orld T
ime
City Code List
”.
Home City
TYO
LAX, DEN, CHI, NYC
T
ransmitter
Either the Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal (60kHz)
Fort Collins, Colorado signal
1000km
Mt. Hagane
(60kHz)
Mt. Otakadoya
(40kHz)
500km
1000km
500km
Japan T
ransmitter
Locations
•
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.
U.S. T
ransmitter
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.
•
Geographic contours, nearby buildings, seasonal conditions, the time of day
, can even make reception impossible even when you a
re within
range of the transmitter
.
•
Best reception is possible late at night.