Current Time Setting - Casio 3108 Operation Manual

Current Time Setting

This watch adjusts its time setting automatically in accordance with a time
calibration signal. You also can perform a manual procedure to set the time
and date, when necessary.
• Whenever you need to travel outside of the time zone where Beijing is
located (GMT+8), use the procedure under "To specify your Home City" to
change the watch's Home City setting as required.
• When using the watch outside the range of the time calibration signal
transmitter, you have to adjust the current time setting manually as
required. See "Timekeeping" for more information about manual time
settings.
To specify your Home City
1. In the Timekeeping Mode, hold down A until
the city code starts to flash. This is the setting
screen.
2. Use D(east) and B(west) to scroll through
the city codes and display the one you want to
use as your Home City.
• If you want the watch to receive the Chinese
time calibration signal, you should select
City code
BJS (Beijing) or HKG (Hong Kong) as your
Home City.
• For full information on city codes, see the
"City Code Table".
3. Press A to exit the setting screen.
• You can disable time signal reception, if you want. See "To turn auto receive
on and off" for more information.
• If you are in an area that does not use Daylight Saving Time (summer time),
turn off the DST setting.
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. This watch is designed to receive a time calibration signal late at
night. Because of this, you should place the watch near a window as shown
in the illustration when you take it off at night. Make sure there are no metal
objects nearby.
• Make sure the watch is facing the right way.
• Proper signal reception can be difficult or even impossible under the
conditions listed below.
Inside or Inside a Near
among vehicle household
buildings appliances,
office
equipment,
or a mobile
phone
• Signal reception normally is better at night than during the day.
• Time calibration signal reception takes from one to seven minutes. Take
care that you do not perform any button operations or move the watch
during this time.
Operation Guide 3108
12 o'clock
or
Near a Near high- Among or
construction tension behind
site, airport, power lines mountains
or other
sources of
electrical
noise
Approximate Reception Range
Beijing
1,500 km
500 km
Chengdu
• 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 also may 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
• When a calibration time is reached, the watch will receive the calibration
signal only if it is in either the Timekeeping Mode or World Time Mode.
Reception is not performed if a calibration time is reached while you are
configuring settings.
• Auto receive 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 one to seven minutes everyday
when the time in the Timekeeping Mode reaches each of the calibration
times. Avoid performing any button operation within seven minutes before or
after any one of the calibration times. Button operation can interfere with
correct calibration.
• Remember that reception of the calibration signal depends on the current
time in the Timekeeping Mode. The receive operation will be performed
whenever the display shows any one of the calibration times, regardless of
whether or not the displayed time actually is the correct time.
• Calibration signal reception is disabled while a countdown timer operation
is in progress.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being
received. For best reception, be sure to keep the watch in a location where
signal strength is strongest.
Weak
(Level 0)
Receiving indicator
• Use the receiving indicator as a guide for checking signal strength and for
finding the best location for the watch during signal receive operations.
• Even in an area where signal strength is strong, it takes about 10 seconds
for signal reception to stabilize enough for the receiving indicator to indicate
signal strength.
Changchun
Shangqiu
Shanghai
Hong Kong
Strong
(Level 3)
2