User manual

Operation Guide 4792
2
• If you want the watch to receive the Chinese time calibration signal, you
should select BJS (Beijing, GMT+8) as your Home City.
• The GMT differential value shown above indicates the time difference in
hours between Greenwich Mean Time and the currently selected city
code.
3. Hold down A and the timekeeping second hand will stop. Keeping A
depressed, press D to swap the World Time and Home Time. This
operation makes the World Time city you selected in step 2 your Home
Time, and your current Home Time the World Time.
4. Press B to return to the Timekeeping Mode.
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. Make sure there are no metal objects nearby.
12 o’clock
or
• Make sure the watch is facing the right way.
• Proper signal reception can be difficult or even impossible under the
conditions listed below.
• Signal reception is normally 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.
Near a
construction
site, airport,
or other
sources of
electrical
noise
Near
household
appliances,
office
equipment,
or a mobile
phone
Inside or
among
buildings
Inside a
vehicle
Near high-
tension
power lines
Among or
behind
mountains
Approximate Reception Range
500 km
Changchun
Shanghai
Hong Kong
Shangqiu
Chengdu
Beijing
1,500 km
• At distances further than about 500 kilometers from the Shangqiu (China)
transmitter, signal reception may not be possible during certain times of
year or times of day. Radio interference may also cause problems with
reception.
• 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.
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
o’clock side is facing towards a window.
2. In the Timekeeping Mode, hold down A for
about two seconds until the watch beeps.
3. The stopwatch second hand will move to
READY to indicate that the watch is setting up
for time calibration reception.
• The stopwatch second hand will move to
WORK and stay there while actual reception is
in progress.
• If signal reception is unstable during reception,
the stopwatch second hand may move
between WORK and READY.
• The hour and minute hands continue to keep
time normally.
WORK
READY
• 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 stopwatch
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 stopwatch second hand will move to N
(NO). Five second later, the stopwatch second hand will resume normal
operation, without any adjustment of the hand setting.
• If the stopwatch second hand is pointing to Y (YES) or N (NO), you can
return to the Timekeeping Mode by pressing any button.
Y (YES)
N (NO)
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 A.
• If the watch was able to perform a successful
signal receive operation since midnight, the
stopwatch second hand will move to Y (YES). If
the watch has been unable to receive any
signal successfully, the stopwatch second hand
will move to N (NO).
• The watch will return to the Timekeeping Mode
after five seconds or when you press A.
• The current receive 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.
Y (YES)
N (NO)
• Y (YES) 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 stopwatch second hand
will move to N (NO).