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Operation Guide 3139/3456
To specify your Home City
1. In the Timekeeping Mode, hold down A until the city
City code
code starts to flash, 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
any one of the city codes shown in the table below is
selected as your Home City.
E-10
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
(page E-24) or you can set the time manually (page E-40).
The watch will receive the time calibration signal automatically from the applicable
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" (page E-16).
Under factory default settings, auto receive is turned off for all of the following city
codes: HNL (Honolulu), ANC (Anchorage), MOW (Moscow), HKG (Hong Kong), and
BJS (Beijing). For details about turning on auto receive for these city codes, see "To
turn auto receive on and off" on page E-25.
You can disable time signal reception, if you want. See "To turn auto receive on
and off" on page E-25 for more information.
See the maps under "Approximate Reception Ranges" (page E-17) for information
about the reception ranges of the watch.
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Important!
When getting ready to receive the time calibration signal, position the watch as
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.
Make sure the watch is facing the right way.
E-14
The time calibration signal the watch will attempt to pick up depends on its current
Home City code setting as shown below. If you use the watch in Japan or Europe
(each of which has two different transmitter locations), it will try to receive the time
calibration signal from one of the transmitters in your current location. If it cannot
receive the signal, it will then try to receive the time calibration signal from the other
transmitter.
Home City Codes and Transmitters
Home City Code
LIS, LON, MAD, PAR, ROM, BER, STO,
ATH, MOW*
HKG*, BJS*, TPE, SEL, TYO
HNL*, ANC*, YVR, LAX, YEA, DEN, MEX,
YWG, CHI, MIA, YTO, NYC, YHZ, YYT
* The areas covered by the HNL, ANC, MOW, HKG, and BJS city codes are quite
far from the time calibration signal transmitters, and so certain conditions may
cause problems with signal reception.
E-16
Signal reception may not be possible at the distances noted below during certain
times of the year or day. Radio interference may also cause problems with
reception.
Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
Even when the watch is within the reception range of a transmitter, signal reception
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 influence 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.
E-18
12 o'clock
or
Transmitter
Frequency
Anthorn (England)
60.0 kHz
Mainflingen (Germany)
77.5 kHz
Fukushima (Japan)
40.0 kHz
Fukuoka/Saga (Japan)
60.0 kHz
Fort Collins, Colorado
60.0 kHz
(the United States)
German/U.K. Signal
Japan Signal
City
City
City
City
City
City
Code
Name
Code
Name
Code
Name
LIS
Lisbon
ATH
Athens
HKG Hong Kong HNL Honolulu
LON London
MOW Moscow
BJS Beijing
MAD Madrid
TPE Taipei
PAR Paris
SEL Seoul
ROM Rome
TYO Tokyo
BER Berlin
STO Stockholm
3. Press A twice to exit the setting screen.
If you are in an area that does not use Daylight Saving Time (summer time), turn off
the DST setting (page E-45).
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 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"
(page E-18).
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" (page E-24).
Proper signal reception can be difficult or even impossible under the conditions
listed below.
Inside or
Inside a
Near
among
vehicle
household
buildings
appliances,
office
equipment,
or a mobile
phone
Signal reception normally is better at night than during the day.
Time calibration signal reception takes from two to seven minutes, but in some
cases it can take as long as 14 minutes. Take care that you do not perform any
button operations or move the watch during this time.
Approximate Reception Ranges
U.K. and German Signals
Anthorn
1,500 kilometers
Mainflingen
Japan Signal
500 kilometers
The Anthorn signal
is receivable within
this area
Fukuoka/Saga
Your Home City
1
HNL, ANC,
YVR, LAX, YEA,
Standard Time
DEN, MEX,
Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Daylight Saving
YWG, CHI, MIA,
Time
YTO, NYC,
YHZ, YYT
Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight
LIS, LON
Daylight Saving
2:00 am 3:00 am 4:00 am 5:00 am Midnight
Time
Standard Time 2:00 am 3:00 am 4:00 am 5:00 am Midnight
MAD, PAR,
ROM, BER, STO
Daylight Saving
3:00 am 4:00 am 5:00 am Midnight
Time
U.S. Signal
City
City
City
City
Code
Name
Code
Name
YWG Winnipeg
ANC Anchorage
CHI
Chicago
YVR Vancouver
MIA Miami
LAX Los Angeles YTO Toronto
YEA Edmonton
NYC New York
DEN Denver
YHZ Halifax
MEX Mexico City YYT St. Johns
E-11
E-13
Near a
Near high-
Among
construction
tension
or behind
site, airport,
power lines
mountains
or other
sources of
electrical
noise
E-15
U.S. Signal
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
Fukushima
500 kilometers
1,000 kilometers
E-17
Auto Receive Start Times
2
3
4
5
6
*
1:00 am
*
*
1:00 am
*
*
1:00 am
2:00 am
*
*
*
E-19
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