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Operation Guide 3185
E-20
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 (page E-22).
• 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, see page E-24.
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• 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 will cause timing to resume from where it
was stopped.
E-22
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” on page E-24 for more information.
E-23
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''
AReset
Interval 2
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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.
E-25
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.
E-26
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
E-27
▲
Hold down A
for about three
seconds.
To delete diving log records
In the Diving Log Recall Mode, hold down A for about three seconds.
• Keep A depressed for the full three seconds. During this time, message CLR will
flash on the display and then “-:--” will appear. Log records will not be deleted if you
release A before “-:--” appears. “-:--” indicates that all log records have been
deleted.
Note
• This procedure deletes all diving log records. Diving log records cannot be deleted
individually.
• Note that you cannot delete log records while a diving time measurement operation
is in progress.
E-28
Tide/Moon Data
In the Tide/Moon Data Mode, you can see the current tide and the current date’s
Moon phase for your Home City. You can specify a date and view tide and Moon data
for that date.
• See “Moon Phase Indicator” (page E-60) for information about the Moon phase
indicator and “Tide Graph” (page E-63) for information about the tide graph.
• All of the operations in this section are performed in the Tide/Moon Data Mode
(page E-11).
Note
• It takes about two seconds to calculate tide graph data. You will not be able to
display a setting screen while data calculation is in progress.
• Moon age is calculated to an accuracy of ±1 day.
E-29
Tide Data
The tide graph that appears first when you enter the Tide/Moon Data Mode shows the
data at 6:00 a.m. for your currently selected Home City on the current date, according
to the Timekeeping Mode. From there you can specify another date or time.
• If the tide data is not correct, check your Timekeeping Mode settings and correct
them if necessary.
• The tide graph is displayed in the Timekeeping Mode, the Tide/Moon Data Mode,
and the Diving Mode.
• If the watch is in the Diving Mode when there is a transition from one date to the
next, the tide graph contents will not change to reflect the data for the new date. If
you want to update the tide graph, exit and then re-enter the Diving Mode.
• If you feel that the information shown by the tide graph is different from actual tide
conditions, you need to adjust the high tide time. See “Adjusting the High Tide Time”
(page E-32) for more information.