Backlight Precautions; Changing The Barometric Pressure And Temperature Units; Calibrating The Temperature Sensor; Calibrating The Barometric Pressure Sensor - Casio 2782 Operation Manual

• The RECOVER indicator will flash on the
display if you use the light or alarms a number
of times during a short period. All of the
following functions are disabled while the
RECOVER indicator is flashing on the display.
All sensor operations
Backlight
All alarm beepers
Analog hand setting
After some time, battery power will recover and
RECOVER will disappear, indicating that the
above functions are enabled again.
• While the RECOVER indicator is flashing on the display, the indicated
barometric pressure and temperature values are the last values measured
before battery power went low.
• If RECOVER starts to flash while a Depth Gauge Mode depth
measurement operation is in progress, the measurement operation will
continue. Though the elapsed measurement time will be recorded in log
memory, maximum depth and water temperature values are not. In this
case, are displayed in place of the maximum depth and water
temperature.

Backlight Precautions

• The electro-luminescent panel that provides illumination loses power after
very long use.
• The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
• The backlight automatically turns off whenever an alarm sounds.
• The watch may emit an audible sound whenever the display is illuminated.
This is due to vibration of the EL panel used for illumination, and does not
indicate malfunction.
• Frequent use of the backlight runs down the battery.
• The backlight is disabled while the watch is taking a depth reading (every
three seconds).
Auto light switch precautions
• Wearing the watch on the inside of your wrist, movement of your arm, or
vibration of your arm can cause frequent activation of the auto light switch
and illumination of the display. To avoid running down the battery, turn off
the auto light switch whenever engaging in activities that might cause
frequent illumination of the display.
• The backlight may not light if the face of the
More than 15 degrees
watch is more than 15 degrees above or below
too high
parallel. Make sure that the back of your hand
is parallel to the ground.
• The backlight turns off in about two seconds,
even if you keep the watch pointed towards
your face.
• Static electricity or magnetic force can interfere with proper operation of the
auto light switch. If the backlight does not light, try moving the watch back to
the starting position (parallel with the ground) and then tilt it back toward
you again. If this does not work, drop your arm all the way down so it hangs
at your side, and then bring it back up again.
• Under certain conditions, the backlight may not light until about one second
after you turn the face of the watch towards you. This does not necessarily
indicate malfunction of the backlight.
• You may notice a very faint clicking sound coming from the watch when it is
shaken back and forth. This sound is caused by mechanical operation of
the auto light switch, and does not indicate a problem with the watch.

Changing the Barometric Pressure and Temperature Units

Changing the barometric pressure units automatically restarts the barometric
pressure history graph.
To change the barometric pressure and temperature units
1. Press B to enter the Barometer/Thermometer
Mode.
2. Hold down A until
flash in the upper part of the display. This is
the setting screen.
• Wait for at least four or five seconds before
advancing to step 3. If you advance to step 3
too soon, your settings will not be configured
correctly.
• If a temperature value is set, xxxx
after a few seconds.
• The bottom part of the display shows
value (if set). If a barometric value is set, the display goes blank for four
or five seconds, and then the currently set pressure value appears.
• If OFF or a value does not appear in the upper and lower parts of the
display, press A again to exit the setting screen, and repeat step 2 of
this procedure.
Operation Guide 2782
or starts to
OFF xxxx
changes to the temperature value
OFF or a barometric pressure
3. After waiting four or five seconds, press C to move the flashing in the
sequence shown below.
Temperature Pressure
Sensor
Sensor
Calibration Calibration
4. Press C to move the flashing to the unit setting you want to change
° °
( C/ F or hPa/inHg).
5. Use D to select the unit you want.
6. Press A to return to the Barometer/Thermometer Mode screen.

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. Press B to enter the Barometer/
Thermometer Mode.
2. Hold down A until
flash in the upper part of the display. This is
the setting screen.
• Wait for at least four or five seconds before
advancing to step 3. If you advance to step
3 too soon, your settings will not be
configured correctly.
• If a temperature value is set, xxxx
after a few seconds.
• The bottom part of the display shows
value (if set). If a barometric value is set, the display goes blank for four
or five seconds, and then the currently set pressure value appears.
• If OFF or a value does not appear in the upper and lower parts of the
display, press A again to exit the setting screen, and repeat step 2 of
this procedure.
3. After waiting four or five seconds, press D (+) or B (–) to change the
displayed temperature by 0.1°C (or 0.2°F).
• Pressing D and B at the same time returns to the factory calibration
( OFF ).
4. Press A to return to the Barometer/Thermometer Mode 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. Press B to enter the Barometer/
Thermometer Mode.
2. Hold down A until
flash in the upper part of the display. This is
the setting screen.
• Wait for at least four or five seconds before
advancing to step 3. If you advance to step
3 too soon, your settings will not be
configured correctly.
• If a temperature value is set,
xxxx
after a few seconds.
• The bottom part of the display shows
value (if set). If a barometric value is set, the display goes blank for four
or five seconds, and then the currently set pressure value appears.
• If or a value does not appear in the upper and lower parts of the
OFF
display, press A again to exit the setting screen, and repeat step 2 of
this procedure.
°C / °F
hPa/inHg
OFF or xxxx starts to
changes to the temperature value
OFF or a barometric pressure
OFF or xxxx starts to
changes to the temperature value
OFF or a barometric pressure
7