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Operation Guide 5285 (OC)
E-23
Rotate the crown to move the 2.
x
Second Hand to the city code you want
to select as your Home City.
Each time you select a city code, the
x
z
Hour Hand,
c
Minute Hand
and
.
Day Indicator move to the current time and date for that city
code.
Whenever you move the
x
x
Second Hand to 12 o’clock while selecting
a city code, it will automatically perform one full revolution and stop at
12 o’clock from the opposite direction.
The
x
,
Lower Dial Hand shows the summer time setting for the
currently selected Home City.
Push the crown back in to return to the Dual Time Mode.3.
@
+B
E-22
Confi guring Home City Settings
The Home City is location where you will normally use the watch. You can choose from a selection of city
codes that represent 29 cities around the globe.
For information about specifying a World Time City, see “Checking the Current Time in a Different Time
x
Zone” (page E-30).
To confi gure Home City settings
Note
This watch does not have a city code that corresponds to Newfoundland.
x
Pull out the crown to the second click.1.
This will cause the x
x
Second Hand to move to the city code of the
currently selected Home City.
This indicates the city code setting mode.
x
Leaving the crown pulled out for more than two minutes without x
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.
For details about city codes, see the “City Code Table” at the back of
x
this manual.
@
TOKYO (TYO)
E-21
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
Pressing
x A causes the
x
Second Hand to move to the current Home City
for about one second.
The
x
.
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-20
Mode Reference Guide
Your watch has two “modes”. The mode you should select depends on what you want to do.
To do this: Enter this mode: See:
View the current time in your Home City and in one of 29 other cities x
around the globe
View the current date in the Home City x
Confi gure Home City and daylight saving time (DST) settings x
Perform a time calibration signal receive operation x
Confi gure World Time City and summer time settings x
Swap the Home City and World Time City x
Dual Time Mode E-21
Use the stopwatch to measure elapsed time Stopwatch Mode E-33
Dual Time Mode Stopwatch Mode
Indicates the day of the week
(Su/Mo/Tu/We/Th/Fr/Sa).
Indicates the 1/20 (0.05) second
count.
C
E-19
Rotate the crown to move the 4.
x
Second Hand to the setting you want.
To turn on auto receive, select x Y (YES).
To turn off auto receive, select x N (NO).
Push the crown back in to return to the Dual Time Mode.5.
Radio-controlled Atomic Timekeeping Precautions
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 x
to one second.
The watch is designed to update the date and day of the week automatically for the period from x
January 1, 2000 to December 31, 2099. Updating of the date by signal reception will no longer be
performed starting from January 1, 2100.
If you are in an area where signal reception is not possible, the watch keeps time with the precision
x
noted in “Specifi cations” (page E-44).
The receive operation is disabled under any of the following conditions. x
While power is at Level 2 or Level 3 (page E-10) −
While the watch is in the power recovery mode (page E-11) −
While the watch is in the sleep state (power saving, page E-12) −
E-18
To check the result of the latest receive operation
Hold down 1. C for at least two seconds to enter the Dual Time Mode (page
E-21).
Press 2. B.
The
x
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.
You can return to the Dual Time Mode manually by pressing
x B while the
x
Second Hand is pointing to Y (YES) or N (NO).
Note
The
x
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
Hold down 1. C for at least two seconds to enter the Dual Time Mode (page
E-21).
Press 2. B.
During the 10 seconds that the 3.
x
Second Hand is pointing to the latest
receive operation result (see above), pull out the crown to the fi rst click.
This will cause the
x
x
Second Hand to point to either Y (YES) or N (NO),
which indicates the current on/off setting.
Leaving the crown pulled out for more than two minutes without
x
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)
E-17
To perform manual receive
Hold down 1. C for at least two seconds to enter the Dual Time Mode (page E-21).
Hold down 2. B for at least two seconds.
The
x
x
Second Hand will fi rst indicate the last receive results as either Y (YES) or N (NO), and then
move to R (Receive in progress) to indicate that signal reception has started.
The watch’s time setting is adjusted automatically whenever a receive 3.
operation is successful.
Note
The current time indication may become out of sync by two or three minutes
x
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.
If reception fails for some reason, check the surrounding area and eliminate
x
possible causes for failure and then try again. See “To get ready for a
receive operation” (page E-15).
@
E-16
Signal reception may be diffi cult or even impossible under the conditions described below. x
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
What you should do next depends on whether you are using Auto Receive or Manual Receive.3.
Auto Receive: Leave the watch over night in the location you selected in step 2. See “Auto Receive” x
on page E-16 for details.
Manual Receive: Perform the operation under “To perform manual receive” on page E-17. x
Auto Receive
With Auto Receive, the watch performs the receive operation each day automatically up to six times
x
(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.
Calibration signal reception is disabled while the watch is in the Stopwatch Mode and an elapsed time
x
measurement operation is in progress.
Calibration signal reception is disabled while the crown is pulled out.
x