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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 five 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
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.
• Make sure the watch is facing the right way.
• 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. Take
care that you do not perform any button operations or move the watch
during this time.
Approximate Reception Range
Beijing
1,500 km
500 km
Chengdu
• 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.
• Signal reception is affected by weather, atmospheric conditions, and
seasonal changes.
Operation Guide 5019
12 o'clock
or
Near a
Near high-
Among or
construction
tension
behind
site, airport,
power lines
mountains
or other
sources of
electrical
noise
Changchun
Shangqiu
Shanghai
Hong Kong
About Auto Receive
The watch starts to receive the time calibration signal automatically when the
time in the Timekeeping Mode reaches 1:00 a.m., 2:00 a.m., 3:00 a.m., 4:00
a.m., and 5:00 a.m. each day (calibration times). When any auto receive is
successful, the remaining auto receive operations are not performed.
Note
• Auto receive is supported in all modes except while a stopwatch elapsed
time operation is in progress.
• Auto receipt 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 receives the calibration signal for two to seven minutes every
day when the time in the Timekeeping Mode reaches each of the calibration
times. Do not perform 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 Timekeeping Mode.
To perform manual receive
1. Place the watch on a stable surface so its 12
Second hand
o'clock side is facing towards a window.
2. In the Timekeeping Mode, hold down B for
about two seconds until the day hand moves
to R. This will cause the watch to prepare for
signal reception.
• At this time the second hand will move to 60
and stop.
• The day hand will move to W and stay there
while actual reception is in progress.
• If signal reception is unstable during reception,
Day hand
the day hand may move between W and R.
• The hour and minute hands continue to keep
time normally during manual receive.
• Time calibration signal reception takes from
two to seven minutes. Take care that you do not
perform any button operations or move the
watch during this time.
• If reception is successful, the day hand will
move to Y. 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 day hand will move to N. Five seconds
later, the day hand will resume normal operation, without any adjustment of
the hand setting.
Viewing the Latest Signal Reception Results
You can use the procedure below to check whether or not the last signal
receive operation was successful.
To check the latest signal reception results
In the Timekeeping Mode, press B.
Day hand
• If the watch was able to perform a successful
signal receive operation since midnight, the
day hand will move to Y. If the watch has been
unable to receive any signal successfully, the
day hand will move to N.
• The watch will return to the Timekeeping Mode
after five seconds or when you press B.
• The current receive result is cleared when the
first auto receive operation is performed on the
following day. This means Y indicates
successful signal reception since the start of
the current day.
• Y continues to be indicated even if an attempt at manual receive fails after
auto receive is successful.
• If you adjust the time or date setting manually, the day hand will move to N.
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