Filter
Top Products
Operation Guide 3147
3
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 two to seven minutes everyday
when the time in the Timekeeping Mode reaches a calibration time. Do not
perform any button operation within seven minutes before or after the
calibration times. Doing so 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.
About the Signal Strength Indicator
The signal strength 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. The signal strength indicator is displayed
while an auto or manual receive operation is in progress.
• Even in an area where signal strength is strong, it takes about 10 seconds
for signal reception to stabilize enough for the signal strength indicator to
indicate signal strength.
l
l
l
l
l
l
l
l
l
l
l
l
Strong
(Level 3)
Signal strength indicator
Weak
• Use the signal strength indicator as a guide for checking signal strength
and for finding the best location for the watch during signal receive
operations.
• Following reception of the time calibration signal and calibration of the
watch’s time setting, the Level 3 signal strength indicator will remain on the
display in all modes. The Level 3 signal strength indicator will not be
displayed if signal reception was unsuccessful or after you adjust the
current time setting manually.
• The Level 3 signal strength indicator is displayed only when the watch is
able to receive both time and date data successfully. It does not appear
when only time data is received.
• The Level 3 signal strength indicator indicates that at least one of the auto
calibration signal receive operations was successful. Note, however, that
the Level 3 signal strength indicator disappears from the display each day
when the first auto receive operation of the day is performed.
To perform manual receive
1. In the Timekeeping Mode, press E to display
the last successful receive time and date
screen.
2. Press E to enter the Receive Mode.
3. Hold down E for about two seconds until
starts to flash on the display.
• Time calibration signal reception takes from
two to seven minutes. Take care that you do
not perform any button operations or move
the watch during this time.
• If the receive operation is successful, the
reception date and time appear on the
display, along with the
GET indicator.
4. After manual receive is complete, press E
twice to return to the Timekeeping mode.
• The watch also will exit the Receive Mode if
you do not perform any button operation for
about one or two minutes.
l
l
l
l
l
l
l
l
l
l
l
l
Receiving
Receive successful
• If the latest reception fails but a previous
reception was successful, an indicator (
) will
be on the display.
The watch will enter the Receive Mode without
changing the time setting if you press E or if
you do not perform any button operation for
about one or two minutes.
Note
• To interrupt a receive operation and return to
the Receive Mode, press E.
Receive failed
If there was a previously
successful reception
If no reception was
successful
To turn auto receive on and off
1. In the Timekeeping Mode, press E to display
the last successful receive time and date
screen.
2. Hold down A until the current auto receive
setting (
ON or OFF) starts to flash. This is the
setting screen.
• Note that the setting screen will not appear if
the currently selected Home City is one that
does not support time calibration reception.
3. Press E to toggle auto receive on (
ON) and
off (
OFF).
4. Press A to exit the setting screen.
• For information about city codes that support
signal receive, see “To specify your Home City”.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
On/Off
status
To check the latest signal reception results
Press E to view the last successful receive time
and date. Press E again to return to the
previous screen.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal
reception.
•The watch is not in the Receive
Mode.
•Your current Home City is not one
of the following: LON, PAR, BER,
ATH, HKG, TPE, TYO, LAX,
DEN, CHI, or NYC
•You changed the time setting
manually.
•The DST setting was changed
manually in the World Time Mode.
•
You pressed a button while signal
receive was in progress.
•Even if receive is successful, the
Level 3 signal strength indicator
disappears from the display each
day when the first auto receive
operation of the day is performed.
•Time data (hour, minutes,
seconds) only was received
during the last receive operation.
The Level 3 signal strength
indicator appears only when time
data and date data (year, month,
day) are both received.
Cannot perform
manual receive.
Auto receive is
turned on, but
the Level 3
signal strength
indicator does
not appear on
the display.
•Enter the Receive
Mode and try again.
•Select LON, PAR,
BER, ATH, HKG,
TPE, TYO, LAX, DEN,
CHI, or NYC as your
Home City.
•Perform manual signal
receive or wait until the
next auto signal
receive operation is
performed.
•Check to make sure
the watch is in a
location where it can
receive the signal.
What you should doProblem Probable Cause
•If the time is one hour off, the
DST setting may be incorrect.
•The Home City code setting is
not correct for the area where you
are using the watch.
•
Change the DST
setting to Auto DST.
•Select the correct
Home City code.
Time setting is
incorrect
following signal
reception.
• For further information, see “Important!” under “Time Calibration Signal
Reception” and “Radio-controlled Atomic Timekeeping Precautions”.
Altimeter
The watch’s altimeter uses a pressure sensor to detect current air pressure,
which is then used to estimate the current altitude based on ISA (International
Standard Atmosphere) preset values. You can specify a reference altitude,
which the watch will use to calculate your current altitude based on the value
you specify. Altimeter functions also include storage of measurement readings
in memory.
Important!
• This watch estimates altitude based on air pressure. This means that
altitude readings for the same location may vary if air pressure changes.
• The semiconductor pressure sensor used by the watch for altitude readings
is also affected by temperature. When taking altitude readings, make sure
the watch is not subjected to temperature changes.
• To avoid the effect of sudden temperature changes during readings, keep
the watch on your wrist in direct contact with your skin.
• Do not rely upon this watch for altitude readings or perform button
operations while sky diving, hang gliding, or paragliding, while riding a
gyrocopter, glider, or any other aircraft, or while engaging in any other
activity where there is the chance of sudden altitude changes.
• Do not use this watch for taking altitude readings in applications that
demand professional or industrial level precision.
• Remember that the air inside of a commercial aircraft is pressurized.
Because of this, the readings produced by this watch will not match the
altitude readings announced or indicated the flight crew.