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Operation Guide 2825

1

MO0406-EB

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out
of your purchase, be sure to carefully read this manual and keep it on hand
for later reference when necessary.

Expose the watch to bright light to charge its battery before using it.

You can use this watch even as its battery is being charged by exposure to
bright light.

•••••

Be sure to read “Battery” of this manual for important
information you need to know when exposing the watch to bright
light.

Applications

The built-in sensors of this watch measure direction, barometric pressure,
temperature and underwater depth. Measured values are then shown on the
display. Such features make this watch useful when hiking, mountain
climbing, skin diving, or snorkeling, or when engaging in other such outdoor
activities.

If the digital display of the watch is blank...

If the 

P.SAVE

 indicator is on the display (either

flashing or steady), it means that the display is
blank because the watch’s Power Saving function
has turned off the display to conserve power.
Power Saving automatically turns off the display
and enters a sleep state whenever the watch is
left for a certain period where it is dark.

The initial factory default setting is Power Saving on.

The watch recovers from the sleep state if you move it to a well-lit area,

*

 if

you press any button, or if you angle the watch towards your face for
reading.

*

It can take up to two seconds for the display to turn on.

See “Power Saving Function”  for more information.

Warning!

The measurement functions built into this watch are not intended for
taking measurements that require professional or industrial precision.
Values produced by this watch should be considered as reasonable
representations only.

When engaging in mountain climbing or other activities in which losing
your way can create a dangerous or life-threatening situation, always be
sure to use a second compass to confirm direction readings.

This watch is intended for use up to skin diving and snorkeling. Never
use this watch while scuba diving.

Never operate the buttons of the watch while underwater.

CASIO COMPUTER CO., LTD. assumes no responsibility for any loss,
or any claims by third parties that may arise through the use of this
watch.

About This  Manual

Button operations are indicated using the
letters shown in the illustration.

Each section of this manual provides you with
the information you need to perform 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 Gauge Mode

Press 

C

.

General Guide

The illustration below shows which buttons you need to press to navigate
between modes.

In any mode, press 

L

 to illuminate the display.

Countdown

Timer Mode

Stopwatch Mode

Digital

Compass Mode

Press 

D

.

Press 

E

.

Alarm Mode

Press 

D

.

Press 

B

.

Sensor Modes

Timekeeping

Use the Timekeeping Mode to view the current
time and date. You also need to enter the
Timekeeping Mode to configure timekeeping
settings, as well as the following settings.

Display illumination duration (“To specify the
illumination duration”)

Power saving on/off (“To turn Power Saving on
and off”)

Temperature unit (“To specify barometric
pressure and temperature units”)

Depth unit (“To specify the depth unit”)

Barometric pressure unit (“To specify
barometric pressure and temperature units”)

Hour : Minutes

PM indicator

Seconds

Month – Day

Day of week

To set the time and date

1. In the Timekeeping Mode, hold down 

A

 until the seconds start to flash,

which indicates the setting screen.

2. Press 

D

 to cycle through the setting items in the sequence shown below,

and display the one you want to configure.

Year

Seconds

Hour

Minutes

Day

Month

12/24-Hour
Format

Power
Saving

Barometric 
Pressure Unit

Depth Unit

Temperature 
Unit

The following steps explain how to configure timekeeping settings only.
See the other sections of this manual for information about configuring
the display illumination duration, Power Saving, Temperature Unit, Depth
Unit, and Barometric Pressure Unit settings.

3. When the timekeeping setting you want to change is flashing, use 

E

 and/

or 

B

 to change it as described below.

4. After the settings are the way you want, press 

A

 to exit the setting screen.

Note

Resetting the seconds to 

00

 while the current count is in the range of 30 to

59 causes the minutes to be increased by 1. In the range of 00 to 29, the
seconds are reset to 

00

 without changing the minutes.

With the 12-hour format, the 

P

 (PM) indicator appears on the display for

times in the range of noon to 11:59 p.m. and no indicator appears for times
in the range of midnight to 11:59 a.m.

  Do this:

Press 

E

.

Use 

E

 (+) and 

B

 (–).

Press 

E

.

Press 

E

 (+) and 

B

 (–).

  To do this:

Reset the seconds to 

00

Change the hour or minutes

Toggle between 12-hour (

12H

)

and 24-hour (

24H

) timekeeping

Change the year, month, or day

Screen

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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