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Operation Guide 5286 (OC)
E-23
Timekeeping (Dual Time Mode)
To enter the Dual Time Mode, hold down C at least two seconds.
Hand Functions
z
z Hour Hand
x
x Second Hand
c
c Minute Hand
v
v Hour Hand (24-hour)
b
b Small Minute Hand: World Time minute hand
n
n Small Hour Hand: World Time hour hand
m
m Small Hour Hand (24-hour): World Time 24-hour hand
,
, Lower Dial Hand: Indicates the current day of the week.
.
. Day Indicator
x Pressing A causes the
x
Second Hand to move to the current Home City
for about one second.
x The
.
Day Indicator will change gradually between approximately 10 p.m.
and 2 a.m. During this period the number indicating the day will not be
centered in the indicator window.
+@ *> B
5 6
E-22
Dual Time Mode Stopwatch Mode
Alarm Mode Countdown Timer Mode
Indicates the day of the
week (Su/Mo/Tu/We/Th/
Fr/Sa).
Indicates the 1/20 (0.05)
second count.
Indicates ON or OFF. Indicates TR.
C
C
C
C
x You can return to the Dual Time Mode from any other mode by holding down C for at least two
seconds.
E-21
Mode Reference Guide
Your watch has four “modes”. The mode you should select depends on what you want to do.
Use C to cycle between modes.
To do this: Enter this mode: See:
x View the current time and date in your Home City
x Confi gure Home City and summer time (DST) settings
x Receive the time calibration signal automatically
x Manually adjust the time or date setting
Any Mode E-23
x View the current time in one of 29 other cities around the globe
x Perform manual time calibration signal reception
x View reception results
x Turn auto time calibration signal reception on or off
x Confi gure World Time City and summer time settings
x Swap the Home City and World Time City
Dual Time Mode E-23
x Use the stopwatch to measure elapsed time
x Use Auto Start
Stopwatch Mode E-35
Use the countdown timer Countdown Timer Mode E-39
Set an alarm time Alarm Mode E-42
E-20
4. Rotate the crown to move the
x
Second Hand to the setting you want.
x To turn on auto receive, select Y (YES).
x To turn off auto receive, select N (NO).
5. Push the crown back in to return to the Dual Time Mode.
Radio-controlled Atomic Timekeeping Precautions
x Strong electrostatic charge can result in the wrong time setting.
x Even if a receive operation is successful, certain conditions can cause the time setting to be off by up
to one second.
x The watch is designed to update the date and day of the week automatically for the period from
January 1, 2000 to December 31, 2099. Updating of the date by signal reception will no longer be
performed starting from January 1, 2100.
x If you are in an area where signal reception is not possible, the watch keeps time with the precision
noted in “Specifi cations” (page E-53).
x The receive operation is disabled under any of the following conditions.
− While power is at Level 2 or Level 3 (page E-11)
− While the watch is in the power recovery mode (page E-12)
− While the watch is in the sleep state (power saving, page E-13)
x A receive operation is cancelled if an alarm sounds while it is being performed.
E-19
To check the result of the latest receive operation
1. Hold down C for at least two seconds to enter the Dual Time Mode (page
E-23).
2. Press B.
x The
x
Second Hand will move to Y (YES) if the latest receive operation
was successful, or N (NO) if it was not. After about ten seconds, regular
timekeeping will resume.
x You can return to the Dual Time Mode manually by pressing any button
while the
x
Second Hand is pointing to Y (YES) or N (NO).
Note
x The
x
Second Hand will indicate N (NO) if you have adjusted the time or
date setting manually since the latest receive operation.
To turn auto receive on and off
1. Hold down C for at least two seconds to enter the Dual Time Mode (page
E-23).
2. Press B.
3. During the 10 seconds that the
x
Second Hand is pointing to the latest
receive operation result (see above), pull out the crown to the fi rst click.
x This will cause the
x
Second Hand to point to either Y (YES) or N (NO),
which indicates the current on/off setting.
x Leaving the crown pulled out for more than two minutes without
performing any operation will automatically cause crown operations to
become disabled. If this happens, press the crown back in, pull it out,
and then start the operation over again.
@
Y (YES)
N (NO)
@
Y (YES)
N (NO)
E-18
To perform manual receive
1. Hold down C for at least two seconds to enter the Dual Time Mode (page E-23).
2. Hold down B for at least two seconds.
x The
x
Second Hand will fi rst indicate the last receive results as either Y (YES) or N (NO), and then
move to RC (R) (Receive in progress) to indicate that signal reception has started.
3. The watch’s time setting is adjusted automatically whenever a receive
operation is successful.
Note
x The current time indication may become out of sync by two or three minutes
while a receive operation is in progress. Correct indication will resume after
the receive operation is complete. If you need to produce a correct time
reading immediately, press any button to stop the receive operation.
x If reception fails for some reason, check the surrounding area and eliminate
possible causes for failure and then try again. See “To get ready for a
receive operation” (page E-16).
@
Y (YES)
N (NO)
E-17
x Signal reception may be diffi cult or even impossible under the conditions described below.
Inside or among
buildings
Inside a vehicle Near household
appliances,
offi ce
equipment, or a
mobile phone
Near a
construction
site, airport, or
other sources of
electrical noise
Near high-
tension power
lines
Among
or behind
mountains
3. What you should do next depends on whether you are using Auto Receive or Manual Receive.
x Auto Receive: Leave the watch over night in the location you selected in step 2.
x Manual Receive: Perform the operation under “To perform manual receive” on page E-18.
Important!
x With Auto Receive, the watch performs the receive operation each day automatically up to six times
(up to fi ve times for the Chinese calibration signal) between the hours of midnight and 5 a.m. When any
receive operation is successful, none of the other receive operations for that day are performed.
x Calibration signal reception is disabled in the following cases.
− While an elapsed time operation is in progress in the Stopwatch Mode
− While a timer operation is in progress
− While Auto Receive is turned off
− While the crown is pulled out
E-16
x 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.
− Mainfl ingen (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: 500 kilometers (310 miles)
x As of June 2012, China does not use Daylight Saving Time (DST). If China does go to the Daylight
Saving Time system in the future, some functions of this watch may no longer operate correctly for the
China time zones.
x Using this watch in a country covered by a time calibration signal that is different from the countries it
supports may result in incorrect time indication due to local application of summer time, etc.
To get ready for a receive operation
1. Confi rm that the watch is in the Dual Time Mode. If it isn’t, hold down C at least two seconds to enter
the Dual Time Mode.
2. Place the watch in a location where signal reception is good.
12 o’clock
or
x Position the watch as shown in the nearby illustration,
with 12 o’clock pointed towards a window. Make sure
there are no metal objects nearby.
x Signal reception normally is better at night.
x The receive operation takes from two to 10 minutes, but
in some cases it can take as long as 20 minutes. Take
care that you do not perform any button operation or
move the watch during this time.