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Operation Guide 3184
3
• If the latest reception fails but a previous reception was
successful on the current day, the settings updated
indicator will be on the display.
Note
• To interrupt a receive operation and return to normal
timekeeping, press D.
If there was a previously
successful reception on
the current day
If no reception was
successful
Receive failed
To turn auto receive on and off
1. In the Timekeeping Mode, press D to display the last
successful receive time and date screen.
2. Hold down A until the current auto receive setting (
or ) 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 D to toggle auto receive on (
) and off ( ).
4. Press A to exit the setting screen.
• For information about city codes that support signal
receive, see “To specify your Home City”.
On/Off status
To check the latest signal reception results
In the Timekeeping Mode, press D to view the last
successful receive time and date. Press D again to
return to the previous screen.
• The watch also will return to normal timekeeping if you
do not perform any button operation for about one or two
minutes.
• The watch is not in the
Timekeeping Mode.
• Your current Home City is not
one of the following: LIS, LON,
MAD, PAR, ROM, BER, STO,
ATH, MOW, HKG, BJS, TPE,
SEL, TYO, HNL, ANC, YVR,
LAX, YEA, DEN, MEX, CHI,
NYC, YHZ, or YYT
• 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 settings updated indicator
will disappear 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 settings updated
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 settings
updated
indicator does
not appear on
the display.
• Enter the Timekeeping Mode
and try again.
• Select LIS, LON, MAD, PAR,
ROM, BER, STO, ATH, MOW,
HKG, BJS, TPE, SEL, TYO,
HNL, ANC, YVR, LAX, YEA,
DEN, MEX, CHI, NYC, YHZ,
or YYT 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
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions.
• 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.
Using the Diving Mode
You can use the Diving Mode to keep log records of the duration of each of your dives.
Each log record includes a log number, the dive time, and the dive start date and time.
There is enough memory to hold up to 10 diving log records. You can use the Diving
Log Recall Mode to display diving log records currently in memory.
• Use C to enter the Diving Mode as shown under “General Guide”.
• If you leave the watch in the Diving Mode for about 11 to 12 hours, it will
automatically switch to the Timekeeping Mode.
Graphic Area
• The Dive Graph indicates the current dive time in minutes. While a dive time
measurement operation is in progress, the current minute of the dive flashes in the graph.
• The Dive Graph time does not include interval time.
Diving Mode Screens
Dive Time Measurement
Reset Screen
Mode name
Current timeDive time (hours,
minutes, seconds)
Ongoing Dive Time
Measurement Screen
Dive start time
Current timeDive time (hours,
minutes, seconds)
Dive Graph
Measuring Units and Ranges
Dive Time
Unit: 1 second
Range: 23:59'59'' (24 hours)
Dive Interval Time
Unit: 1 minute
Range: 47:59' (48 hours)
• When the interval time exceeds the above range, interval time measurement
automatically stops and the current interval time disappears from the screen of the
newest diving log record.
About the Interval
The interval is time that elapses between the stop of the last dive and the start of the
next dive. The watch starts an interval measurement whenever you press A at the
end of a dive to reset dive time measurement.
• Note that the current ongoing interval time is shown on the screen of the newest
record in diving log memory. It is not displayed in the Diving Mode. For information
about viewing diving log records, “Diving Log Records”.
• The interval is displayed on the screen of the newest diving log, only while an
interval timing operation is in progress.
Starting and Stopping Dive Time Measurement
• Be sure to recharge the battery by exposing the watch
to light before starting a dive.
To start dive time measurement
In the Diving Mode, press D.
To stop dive time measurement
While a dive time measurement operation is in progress,
hold down D for about one second.
• Pressing D again without resetting the dive time
measurement (see below) will cause timing to resume
from where it was stopped.
To reset a dive time measurement and start interval measurement
While dive time measurement is stopped, press A.
• This creates new diving log record with the currently displayed dive time information
and starts interval measurement. Current ongoing interval measurement is shown
on the screen of the newly created record.
To reset a dive time measurement and exit the Diving Mode
While dive time measurement is stopped, hold down C for about one second.
• This creates new diving log record with the currently displayed information and exits
the Diving Mode to the Timekeeping Mode.
• See “Diving Log Records” for more information.
Diving Time Measurement Example
• Single dive
DStart DStop
Dive time
0:00'00'' 0:20'13''
Dive interval time
0:00'00''
AReset
Interval measurement is
possible up to 47:59'59''
• Multiple dives and intervals
DStart DStop DStart DStop
Dive Time 1 Dive Time 2
Interval 1
0:00'00'' 0:15'10'' 0:00'00'' 0:17'15''
0:00'00''
AReset
0:20'16'' 0:00'00''
A Reset
Interval 2
Important!
• Pressing D again after stopping dive time measurement will cause timing to
resume from where it was stopped.
• Dive time/interval measurement continues internally if you exit the Diving Mode
without resetting. A diving log record is not created in this case.
Diving Log Records
A new diving log record is created whenever you reset a dive time measurement,
either by pressing A to start interval measurement or by holding down C to exit the
Diving Mode.
• Each diving log record includes a log number, the dive time, the dive start date and
time, and the interval prior to the dive (if there was one).
• There is enough memory for 10 diving log records. If there are already 10 diving log
records in memory when you perform a reset operation, the oldest record currently
in memory is deleted automatically to make room for the new record.
To view diving log records
1. In the Timekeeping Mode, press C to enter the Diving Log Recall Mode.
• This displays the newest record in memory.
• The interval currently being measured is displayed on the screen of the newest
diving log record.
• “-:--” will appear on the screen if there is no diving log data stored in memory.
• If you do not perform any operation for about one or two hours in the Diving Log
Recall Mode, the watch will automatically return to the Timekeeping Mode.
2. Press D to scroll through the log records, from newer to older.
• Log numbers are lower for older log records.
▲
Newest Record
Log record
number
Dive timeDive start
time
Dive interval
time
Log record
number
Dive timeDive start
time
Dive start date
(month, day)
D
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