Casio 5455 Operation Manual page 5

Time Adjustment Using GPS
Appropriate Signal Reception
Location
GPS signal reception is possible outdoors
where the sky is visible and not blocked by
buildings, trees, or other objects.
Note
In areas where reception is poor,
●
keep the watch face oriented
upwards and do not move the watch.
When the watch is set up for auto
●
receive, take care to avoid covering
the watch face with the sleeve of
your clothing.
GPS signal reception is not possible
●
in the areas described below.
Where the sky is not visible
ー
Indoors (Reception may be
ー
possible near a window.)
Near wireless communication
ー
equipment or other devices that
generate magnetism.
You may experience GPS signal
●
reception problems in the areas
described below.
Where the view of the sky above
ー
is narrow
Near trees or buildings
ー
Near a train station, airport, or
ー
other congested areas
Operation Guide 5455
Acquiring GPS Position Information
Manually
You can use a button operation to acquire
GPS position information and adjust your
Home City (time zone), time, and day settings
in accordance with your current location.
Note
GPS signal reception requires large
●
amounts of power. Perform it only
when necessary.
Getting ready
The receive operation is performed only while
the watch is in the Timekeeping Mode (normal
timekeeping).
Normally the mode hand points to the
●
current day of the week.
Navigating Between Modes
l
Mode
hand
1.
Move to a location appropriate for signal
reception and orient the watch so its
display is pointed straight up at the sky.
2. Hold down (B) for at least three seconds.
Release the button as soon as the second
hand points to "T+P".
The second hand will move in the
●
following sequence: "Y(YES)" or
"N(NO)" n "T (TIME)" n "T+P".
This indicates that position information
●
acquisition has started. While
acquisition is in progress, the mode
hand will move up and down in a semi-
circular pattern.
Mode
hand
Second hand
If position information acquisition is
●
successful, the second hand will move
to "Y(YES)" and then the watch will
automatically adjust its time and day
settings. The watch will also display the
acquired Home City (time zone) and the
approximate latitude of your current
position.
North Pole
Equator
Home City
If position information acquisition fails
●
for some reason, the second hand will
move to "N(NO)" and then the watch will
indicate the current time and day
without adjusting them.
Note
Reception takes anywhere from
●
about 30 seconds to about two
minutes.
It can take as long as 13 minutes
●
when leap second information is
included.
You may experience location
●
information acquisition problems
when you are in the vicinity of a time
zone borderline.
The watch's time and day will not be
indicated correctly if the Home City
(Time Zone) setting is not right for
your location. Perform position
information acquisition in a
representative city in your time zone
or in a location that is well within the
time zone. Or you can perform a time
information receive operation to
adjust time and day settings after
configuring Home City (Time Zone)
and summer time settings manually.
Selecting a Time Zone
l
Acquiring GPS Time Information
l
Manually
Latitude
South Pole
5