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Operation Guide 5046
2
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
When Auto Receive is enabled, the watch will receive the applicable time calibration
signal up to six times a day (five times for the China signal).
When any auto receive is successful, the remaining auto receive operations are not
performed. 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!
• 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.
12 o’clock
or
• Make sure the watch is facing the right way.
Inside or
among
buildings
Inside a
vehicle
Near a
construction
site, airport,
or other
sources of
electrical
noise
Near high-
tension power
lines
Among or
behind
mountains
Near
household
appliances,
office
equipment,
or a mobile
phone
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
• 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.
Home Time Zones
+0, +1, +2
+8
+9
–8, –7, –6, –5
Frequency
60.0 kHz
77.5 kHz
68.5 kHz
40.0 kHz
60.0 kHz
60.0 kHz
Transmitter
Anthorn (England)
Mainflingen (Germany)
Shangqiu City (China)
Fukushima (Japan)
Fukuoka/Saga (Japan)
Fort Collins, Colorado
(the United States)
• The time calibration signal the watch will attempt to pick up depends on its current
Home Time Zone 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 Time Zones and Transmitters
Approximate Reception Ranges
2,000 miles
(3,000 kilometers)
U.K. and German Signals
Anthorn
Mainflingen
1,500 kilometers
500 kilometers
The Anthorn signal is
receivable within this
area.
U.S. Signal
Fort Collins
600 miles
(1,000 kilometers)
Signals are receivable in the Taiwan area when reception conditions are good.
Japan Signals
1,000 kilometers
1,000 kilometers
Fukuoka/Saga
500 kilometers
Fukushima
500 kilometers
500 kilometers
Changchun
Beijing
1,500 kilometers
China Signal
Shanghai
Hong Kong
Shangqiu
Chengdu
• Signal reception may not be possible up to 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)
Shangqiu (China) transmitter: 1500 kilometers (910 miles)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
About Auto Receive
When Auto Receive is enabled, the watch will receive the applicable time calibration
signal up to six times a day (five times for the China signal). 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 Time Zone.
Your Home Time Zone
Auto Receive Start Times
123456
+0
Standard Time
1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Midnight*
Daylight Saving Time
2:00 am 3:00 am 4:00 am 5:00 am
Midnight* 1:00 am*
+1
Standard Time
2:00 am 3:00 am 4:00 am 5:00 am
Midnight* 1:00 am*
Daylight Saving Time
3:00 am 4:00 am 5:00 am
Midnight* 1:00 am* 2:00 am*
+2
Standard Time
3:00 am 4:00 am 5:00 am
Midnight* 1:00 am* 2:00 am*
Daylight Saving Time
4:00 am 5:00 am
Midnight* 1:00 am* 2:00 am* 3:00 am*
+8 Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
+9 Standard Time Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
–8
Standard Time and
Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
–7
Daylight Saving Time
–6
–5
*Next day
Note
• When a calibration time is reached, the watch will receive the calibration signal only
if it is in the Timekeeping Mode. Reception is not performed if a calibration time is
reached while you are configuring settings.
• Auto receive of the calibration signal is designed to be performed early in the
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 takes anywhere from two to 14 minutes to perform a time calibration
signal receive operation. Do not perform any button operation within 14 minutes
before or after the calibration times. Doing so can interfere with correct calibration.
• Remember that reception of the calibration signal depends on the current time in the
Timekeeping Mode.
To perform manual receive
1. Place the watch on a stable surface so its 12 o’clock
side is facing towards a window.
2. In the Timekeeping Mode, hold down A for about two
seconds.
3. The second hand will move to R (READY) to indicate
that the watch is setting up for time calibration
reception.
• The second hand will move to W (WORK) and stay there
while actual reception is in progress.
• If signal reception is unstable during reception, the
second hand may move between W (WORK) and
R (READY).
• The hour and minute hands continue to keep time
normally.
R (READY)
W (WORK)
• 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.
• If reception is successful, the second hand will move to
Y (YES). Five seconds later, the hands will move to the
correct time.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press any
button.
• If reception is not successful, the second hand will move to N (NO). Five seconds
later, the second hand will resume normal operation, without any adjustment of the
hand setting.
• If the second hand is pointing to Y (YES) or N (NO), you can return to the
Timekeeping Mode by pressing A.
Y (YES)
N (NO)
Viewing the Latest Signal Reception Results
You can use the procedure below to check whether or not the most recent signal
receive operation was successful.
To check the latest signal reception results
In the Timekeeping Mode, press A.
• If the watch was able to perform a successful signal
receive operation since midnight, the second hand will
move to Y (YES). If the watch has been unable to
receive any signal successfully, the second hand will
move to N (NO).
• The watch will return to the Timekeeping Mode after five
seconds or when you press A.
• The most recent signal reception result is cleared when
the first auto receive operation is performed on the
following day. This means Y (YES) indicates successful
signal reception since the start of the current day.
• If you adjust the time or date setting manually, the
second hand will move to N (NO).
Y (YES)
N (NO)
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