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Mode Reference Guide; Confi Guring Home City Settings - Casio 5285 Operation Manual

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Signal reception may be diffi cult or even impossible under the conditions described below.
Inside or among
Inside a vehicle
Near household
buildings
appliances,
offi ce
equipment, or a
mobile phone
3.
What you should do next depends on whether you are using Auto Receive or Manual Receive.
Auto Receive: Leave the watch over night in the location you selected in step 2. See "Auto Receive"
on page E-16 for details.
Manual Receive: Perform the operation under "To perform manual receive" on page E-17.
Auto Receive
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.
Calibration signal reception is disabled while the watch is in the Stopwatch Mode and an elapsed time
measurement operation is in progress.
Calibration signal reception is disabled while the crown is pulled out.
E-16
To check the result of the latest receive operation
C for at least two seconds to enter the Dual Time Mode (page
1.
Hold down
E-21).
B.
2.
Press
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.
You can return to the Dual Time Mode manually by pressing B while the
x Second Hand is pointing to Y (YES) or N (NO).
Note
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
C for at least two seconds to enter the Dual Time Mode (page
1.
Hold down
Y (YES)
E-21).
B.
2.
Press
3.
During the 10 seconds that the
receive operation result (see above), pull out the crown to the fi rst click.
This will cause the 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
performing any operation will automatically cause crown operations to
become disabled. If this happens, press the crown back in, pull it out,
N (NO)
and then start the operation over again.
E-18

Mode Reference Guide

Your watch has two "modes". The mode you should select depends on what you want to do.
To do this:
View the current time in your Home City and in one of 29 other cities
around the globe
View the current date in the Home City
Confi gure Home City and daylight saving time (DST) settings
Perform a time calibration signal receive operation
Confi gure World Time City and summer time settings
Swap the Home City and World Time City
Use the stopwatch to measure elapsed time
Dual Time Mode
Indicates the day of the week
(Su/Mo/Tu/We/Th/Fr/Sa).
E-20
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
Zone" (page E-30).
To confi gure Home City settings
Note
This watch does not have a city code that corresponds to Newfoundland.
1.
Pull out the crown to the second click.
This will cause the x Second Hand to move to the city code of the
currently selected Home City.
This indicates the city code setting mode.
Leaving the crown pulled out for more than two minutes without
performing any operation will automatically cause crown operations to
TOKYO (TYO)
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
this manual.
E-22
Operation Guide 5285 (OC)
Near a
Near high-
Among
construction
tension power
or behind
site, airport, or
lines
mountains
other sources of
electrical noise
x Second Hand is pointing to the latest
Enter this mode:
Dual Time Mode
Stopwatch Mode
C
Stopwatch Mode
Indicates the 1/20 (0.05) second
count.
To perform manual receive
C for at least two seconds to enter the Dual Time Mode (page E-21).
1.
Hold down
B for at least two seconds.
2.
Hold down
The 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.
3.
The watch's time setting is adjusted automatically whenever a receive
operation is successful.
Note
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.
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-15).
4.
Rotate the crown to move the
To turn on auto receive, select Y (YES).
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
Strong electrostatic charge can result in the wrong time setting.
Even if a receive operation is successful, certain conditions can cause the time setting to be off by up
to one second.
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.
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-44).
The receive operation is disabled under any of the following conditions.
−
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)
Timekeeping (Dual Time Mode)
To enter the Dual Time Mode, hold down C at least two seconds.
See:
Hand Functions
z z Hour Hand
x x Second Hand
c c Minute Hand
E-21
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
E-33
, , Lower Dial Hand: Indicates the current day of the week.
. . Day Indicator
Pressing A causes the x Second Hand to move to the current Home City
for about one second.
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.
2.
3.
x Second Hand to the setting you want.
x Second Hand to the city code you want
Rotate the crown to move the
to select as your Home City.
Each time you select a city code, the 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 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 , 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.
E-17
E-19
E-21
E-23

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