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Operation Guide 2825

9

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 is shown on the display while calibration is being performed. When

calibration is complete, 

OK

 appears in the upper part of the display and

then the Digital Compass Mode screen (showing the angle value) appears.

If 

---

 appears and then changes to 

ERR

 (error) on the calibration

screen, it means that there is something wrong with the sensor. The 

ERR

message will disappear after about one second. Try performing the
calibration operation again. If 

ERR

 keeps appearing, contact your original

dealer or nearest authorized CASIO distributor to have the watch checked.

To perform northerly calibration

1. While in the Digital Compass Mode, hold

down 

A

 for about one second until 

x1x

appears on the display, which indicates the
setting screen.

2. Press 

D

 to start the northerly calibration

procedure.

At this time, 

-N-

 (north) appears on the

display.

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3. Place the watch on a level surface, and position it so that its 12 o’clock

position points north (as measured with another compass).

4. Press 

B

 to start the calibration operation.

 

---

 is shown on the display while calibration is being performed. When

calibration is complete, 

OK

 appears in the upper part of the display and

then the Digital Compass Mode screen (with 0

°

 indicated as the angle

value) appears.

If 

---

 appears and then changes to 

ERR

 (error) on the calibration

screen, it means that there is something wrong with the sensor. About one
second after the 

ERR

 message appears, 

-N-

 will reappear. Try

performing the calibration operation again. If 

ERR

 keeps appearing,

contact your original dealer or nearest authorized CASIO distributor to have
the watch checked.

Calibrating the Temperature Sensor

The temperature sensor of this watch is calibrated at the factory before
shipment, and further adjustment is normally not required. If you notice
serious errors in the temperature readings produced by the watch, you can
calibrate the sensor to correct the errors.

Important!

Incorrectly calibrating the temperature sensor can result in incorrect readings.
Carefully read the following before doing anything.

Compare the readings produced by the watch with those of another reliable
and accurate thermometer.

If adjustment is required, remove the watch from your wrist and wait for 20
or 30 minutes to give the temperature of the watch time 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

calibration value (if there is one set) appears in the center part of the display.

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5. After waiting four or five seconds, press 

E

 (+) or 

B

 (–) to change the

displayed temperature by 0.1

°

C (or 0.2

°

F).

Pressing 

E

 and 

B

 at the same time returns to the factory calibration

(

OFF

).

6. Press 

A

 to exit the setting screen.

Calibrating the Barometric Pressure Sensor

The pressure sensor of this watch is calibrated at the factory before shipment
and further adjustment is normally not required. If you notice serious errors in
the barometric pressure readings produced by the watch, you can calibrate
the sensor to correct the errors.

Important!

Incorrectly calibrating the barometric pressure sensor can result in incorrect
readings. Before performing the calibration procedure, compare the readings
produced by the watch with those of another reliable and accurate barometer.

To calibrate the pressure 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 calibration value (if there
is one set) appears in the center part of the
display.

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lll

5. After waiting four or five seconds, press 

D

 to

move the flashing to the pressure sensor
calibration setting.

At this time, 

OFF

 or the barometric pressure

value should be flashing on the display.

6. Press 

E

 (+) or 

B

 (–) to change the displayed barometric pressure by 1

hPa (0.05 inHg).

Pressing 

E

 and 

B

 at the same time returns to the factory calibration

(

OFF

).

7. Press 

A

 to exit the setting screen.

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To manually reset the reference depth to 0 meters (feet)

In the Depth Gauge Mode, press 

D

 and 

E

 at

the same time.

Important!

This resets the reference depth and causes the
displayed depth to change to 0 meters (feet).

Never perform the above operation while
submerged.

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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