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Operation Guide 2825

4

The progress beeper and auto-repeat timer alarm do not sound while the
watch is in the Depth Gauge Mode.

The watch can take about five minutes to display the correct water
temperature when there is a great difference between air temperature and
water temperature, when there is a sudden change in water temperature,
etc.

To specify the depth unit

1. Enter the Timekeeping Mode.
2. Hold down 

A

 until the seconds start to flash,

which indicates the setting screen.

3. Press 

D

 nine times to select the depth unit

setting.

See step 2 under “To set the time and date”
for information about how to scroll through
setting screens.

4. Press 

E

 to toggle between meters (

m

) and

feet (

ft

).

5. After the setting is the way you want, press 

A

to exit the setting screen.

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To view water temperature and maximum depth screen

Pressing 

E

 in the Depth Gauge Mode displays the Water Temperature/

Maximum Depth screen. After about five or six seconds, the watch will return
to the Elapsed Measurement Time/Current Depth screen automatically.

You can also return to the Elapsed Measurement Time/Current Depth
screen by pressing 

E

 again.

Never operate the buttons of the watch while underwater.

Elapsed Measurement Time/
Current Depth Screen

Elapsed
measurement time
(hours, minutes,
seconds)

Water temperature

Current
depth

Water Temperature/
Maximum Depth Screen

Maximum
depth

Press 

E

.

To take a direction reading in the Depth Gauge Mode

1. In the Depth Gauge Mode, place the watch on

a flat surface or, if you are wearing the watch,
make sure that your wrist is horizontal (in
relation to the horizon).

2. Point the 12 o’clock position of the watch in

the direction you want to read.

3. While the Elapsed Measurement Time/Current

Depth screen is displayed, press 

B

 to start

direction reading operation.

After about two seconds, the direction that the
12 o’clock position of the watch is pointing
appears on the display.

Also, four pointers appear to indicate magnetic
north, south, east, and west.

About five or six seconds after displaying the Digital Compass screen, the
watch will return to the Elapsed Measurement Time/Current Depth screen
automatically.

You can also return to the Elapsed Measurement Time/Current Depth
screen by pressing 

B

 again.

Angle value
(in degrees)

Direction
indicator

Magnetic north pointer

12 o’clock position

Log Data

Exiting the Depth Gauge Mode after a dive causes the measured data to be
stored automatically into log memory. Stored data remains in log memory
until you start a new dive, which causes the existing data to be replaced with
the data of the new dive.
There is memory for a single log memory record, which includes the following
data.

Total Time Submerged: This value shows the cumulative amount of time

(hours, minutes, seconds) that you spend submerged at a depth of
one meter (four feet) or greater.

Maximum depth:  This value shows the maximum depth you attained during

the dive.

Water temperature at maximum depth:  This value shows the water

temperature at the maximum depth attained during the dive.

Perform the following steps to view the log data that is currently stored in
memory.

To view log data

1. Enter the Depth Gauge Mode.
2. While 

 (or 

0

) is shown on the display, press 

C

 to cycle through the data

screens in the sequence shown below.

Maximum
depth

Water temperature at
maximum depth

Total time submerged

Press

C

.

Depth Gauge
Mode Screen

Log Data Screens

C

Log data screen indicator

C

About five or six seconds after displaying a Log Data screen, the watch
will return to the Depth Gauge Mode screen automatically.

You cannot view log memory data while a depth measurement operation
is in progress.

3. To exit the Depth Gauge Mode, press 

D

.

To delete log memory data

1. Enter the Depth Gauge Mode.
2. While 

 (or 

0

) is shown on the display, press 

C

 to display the log

memory data.

3. Hold down 

A

 for about two seconds until the log data is deleted and the

watch returns to the Depth Gauge Mode screen.

4. To exit the Depth Gauge Mode, press 

D

.

Countdown Timer

You can set a countdown timer start time in the
range of 1 minute to 24 hours. An alarm sounds
when the countdown reaches zero. An auto-
repeat feature causes the countdown to restart
automatically when the end of a countdown is
reached, and a progress beeper signals the
progress of the countdown. All of this makes the
countdown timer a valuable tool for timing the
start of a yacht race.

All of the operations in this section are
performed in the Countdown Timer Mode,
which you enter by pressing 

D

.

Configuring the Countdown Timer

The following are the settings you should configure before actually using the
countdown timer.

Countdown start time

Auto-repeat on/off

Progress beeper on/off

1/10 second

Seconds

Minutes

Hours

Countdown start time

You can set a countdown start time from 1 minute to 24 hours.

Auto-repeat

Whenever zero is reached, the watch beeps (Auto-repeat timer alarm) and
auto-repeat automatically restarts the countdown from the countdown start
time you set. Turning off auto-repeat causes the countdown to stop and the
countdown start time to appear on the display when the end of the countdown
is reached.

Progress Beeper

When the progress beeper is turned on, the watch beeps at minute 10, 5, 4,
3, 2, and 1, of the countdown, and at the second 50, 40, 30, 20, 10, 5, 4, 3, 2,
and 1 of the final minute of the countdown.

To set the countdown start time and auto-repeat on/off

1. While the countdown start time is on the

display in the Countdown Timer Mode, hold
down 

A

 until the hour setting of the

countdown start time starts to flash, which
indicates the setting screen.

If the countdown start time is not displayed,
use the procedure under “To use the
countdown timer” to display it.

2. Press 

D

 to move the flashing in the

sequence shown below to select other
settings.

3. Perform the following operations, depending

on which setting is currently selected on the
display.

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Auto-repeat

on/off

Hours 

Minutes

Auto-repeat indicator

Summary of Contents for 2825

Page 1: ...orm operations in each mode Further details and technical information can be found in the Reference section Light Pressing B C or E while in the Timekeeping Mode directly enters the applicable sensor mode To enter a sensor mode from the Countdown Timer Stopwatch or Alarm Mode first enter the Timekeeping Mode and then press the applicable button Timekeeping Mode Barometer Thermometer Mode Depth Gau...

Page 2: ...gned with the magnetic north pointer This aligns all of the direction angle markings on the bezel with their correct directions See Digital Compass Precautions for other important information about taking direction readings Direction bezel Barometer Thermometer This watch uses a pressure sensor to measure air pressure barometric pressure and a temperature sensor to measure temperature You can cali...

Page 3: ...epth measurement automatically when the sensor detects that your depth exceeds one meter about four feet Depth measurement stops automatically whenever your depth becomes less than one meter four feet Depth measurement restarts whenever you re submerge past one meter four feet All data that is measured between the start of the dive and the end of the dive is treated as part of the same dive no mat...

Page 4: ...uring the dive Water temperature at maximum depth This value shows the water temperature at the maximum depth attained during the dive Perform the following steps to view the log data that is currently stored in memory To view log data 1 Enter the Depth Gauge Mode 2 While or 0 is shown on the display press C to cycle through the data screens in the sequence shown below Maximum depth Water temperat...

Page 5: ...ed You can also turn on an Hourly Time Signal which will cause the watch to beep twice every hour on the hour The alarm number ALM 1 through ALM 5 indicates an alarm screen SIG is shown for the alarm number when the Hourly Time Signal screen is on the display When you enter the Alarm Mode the data you were viewing when you last exited the mode appears first All of the operations in this section ar...

Page 6: ...ns that the 12 o clock pointing due east Question How does the barometer work Answer Barometric pressure indicates changes in the atmosphere and by monitoring these changes you can predict the weather with reasonable accuracy Rising atmospheric pressure indicates good weather while falling pressure indicates deteriorating weather conditions The barometric pressures that you see in the newspaper an...

Page 7: ...on is promoted by frequent charging Approximate Exposure Time 5 minutes 24 minutes 48 minutes 8 hours Exposure Level Brightness Outdoor Sunlight 50 000 lux Sunlight Through a Window 10 000 lux Daylight Through a Window on a Cloudy Day 5 000 lux Indoor Fluorescent Lighting 500 lux Recovery Times The table below shows the amount exposure that is required to take the battery from one level to the nex...

Page 8: ...ote that the difference between magnetic north and true north as measured with all magnetic compasses tends to be greater as one gets closer to either of the magnetic poles You should also remember that some maps indicate true north instead of magnetic north and so you should make allowances when using such maps with this watch Location Taking a direction reading when you are near a source of stro...

Page 9: ...to stabilize To calibrate the temperature sensor 1 Enter the Barometer Thermometer Mode 2 Hold down A for about one second until the display goes blank 3 Release A After about three or four seconds either OFF or a temperature calibration value if one is set will appear in the upper part of the display This is the setting screen 4 Wait four or five seconds until either OFF or a barometric pressure ...

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