Casio 2766 Owner's Manual

Operation Guide 2766

MO0307-EA

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, altitude, barometric

pressure, and temperature. Measured values are then shown on the display.

Such features make this watch useful when hiking, mountain climbing, or

when engaging in other such outdoor activities.

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.

• 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.

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

If the SLEEP 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.

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.

• Most of the display examples in this manual

show only the digital display, without the analog

hands, as shown in the lower illustration.

(Light)

Digital Compass Mode

Press C.

Barometer/

Thermometer Mode

Press B.

• From the Timekeeping Mode or another sensor mode, you can use buttons

B, C, or E to directly enter the mode assigned to it. From any other

mode, you must go to the Timekeeping Mode first.

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.

Press D.

Data Recall Mode

Alarm Mode

Sensor Modes

Timekeeping Mode

▲

Altimeter Mode

▲

Press D.

▲

Press E.

Stopwatch Mode

Hand Setting Mode

▲

Hold down

Timekeeping

This watch features separate digital and analog

timekeeping. The procedures for setting the

digital time and analog time are different.

• Whenever you need to adjust both the digital

and the analog time settings, make sure you

adjust the digital setting first.

Digital Time and Date

Use the Timekeeping Mode to set and view a

digital display of the current time and date. When

setting the digital time, you can also configure

settings for the 12/24-hour format and the Power

Saving function.

Hour : Minutes

PM indicator

Seconds

Month – Day

Day of week

Year

Seconds

Hour

Minutes

Day

Month

12/24-Hour

Format

Power Saving

on/off

Day of

week

To set the digital 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 move the flashing in the sequence shown below to select other

settings.

4. Press A to exit the setting screen.

• Resetting the seconds only (without changing the hour or minute setting)

causes the analog minute hand setting to be adjusted automatically.

• See “Power Saving Function” for details about configuring Power Saving

settings.

Setting

Seconds

Hour, Minutes

12/24-Hour

format

Year, Month,

Day

Day of week

Power Saving

on/off

Button Operations

Press E to reset the seconds to 00.

Use E (+) to change the setting.

Use E to toggle between 12-hour (12H)

and 24-hour (24H) timekeeping.

Use E (+) to change the setting.

Press E to toggle Power Saving on (ON)

and off (OFF).

Screen

3. When the setting you want to change is flashing, use E to change it as

described below.

Operation Guide 2766

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.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59,

without any indicator.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping

Mode is applied in all modes.

• The year can be set in the range of 2000 to 2039.

• The watch’s built-in full automatic calendar automatically makes allowances

for different month lengths and leap years. Once you set the date, there

should be no reason to change it except when battery power drops to Level

Setting the Analog Time

Perform the procedure below when the time indicated by the analog hands

does not match the time of the digital display.

Digital Compass

A built-in bearing sensor detects magnetic north. The watch uses this data to

display an angle value and four pointers indicating north, south, east, and

west. Direction readings are performed in the Digital Compass Mode.

• You can calibrate the bearing sensor if you suspect the direction reading is

incorrect.

To enter and exit the Digital Compass Mode

1. While in the Timekeeping, Barometer/Thermometer, or Altimeter Mode,

press C to enter the Digital Compass Mode.

• At this time, the watch immediately starts a Digital Compass operation.

After the first reading is obtained, the watch continues to take direction

readings automatically each second, for up to 20 seconds.

2. Press D to return to the Timekeeping Mode.

To take a direction reading

1. Enter the Digital Compass Mode.

2. 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).

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

the direction you want to measure.

4. Press C to start a Digital Compass

measurement operation.

• After direction measurement is complete, an

angle value appears on the display. The angle

value indicates the clockwise angle formed

between magnetic north (which is 0 degrees)

and the direction that the 12 o’clock position of

the watch is pointing.

• Also, four pointers appear to indicate magnetic

north, south, east, and west.

• After the first reading is obtained, the watch

continues to take direction readings

automatically each second, for up to 20

seconds.

Angle value (in degrees)

Magnetic north pointer

12 o’clock

position

0°

NNW

Note

• Note that taking a measurement

while the watch is not horizontal

(in relation to the horizon) can

result in large measurement

error.

• Any ongoing direction measurement operation is temporarily paused while

the watch is performing an alert operation (alarm or hourly time signal) or

while the watch’s backlight is turned on (by pressing L). The measurement

operation resumes for its remaining duration after the operation that caused

the pause is finished.

• See “Digital Compass Precautions” for other important information about

taking direction readings.

Barometer/Thermometer

This watch uses a pressure sensor to measure air pressure (barometric

pressure) and a temperature sensor to measure temperature.

• You can calibrate the temperature sensor and the pressure sensor if you

suspect that readings are incorrect.

To take barometric pressure and temperature readings

Pressing B in the the Timekeeping Mode or in any of the other sensor

modes enters the Barometer/Thermometer Mode and automatically starts

taking barometric pressure and temperature measurements.

▲

Press B to

toggle between

screens.

History Graph and

Barometric PressureHistory graph

Temperature

Barometric

pressure

Temperature and

Barometric Pressure

• It can take up to four or five seconds for the barometric pressure reading to

appear after you enter the Barometer/Thermometer Mode.

• Barometric pressure is displayed in units of 1hPa.

• The displayed barometric pressure value changes to

xxxx hPa if a

measured barometric pressure falls outside the range of 260 hPa to 1100

hPa. The barometric pressure value will be displayed again as soon as the

measured barometric pressure is within the allowable range.

• Temperature is displayed in units of 0.1°C.

• The displayed temperature value changes to

xx. x °C if a measured

temperature falls outside the range of –10.0°C to 60.0°C. The temperature

value will be displayed again as soon as the measured temperature is

within the allowable range.

• Some countries refer to the barometric pressure unit hecto-pascal (hPa) as

millibars (mb). It really makes no difference, because 1hPa = 1mb.

• See “Barometer and Thermometer Precautions” for important precautions.

Barometric Pressure History Graph

Barometric pressure indicates changes in the atmosphere. By monitoring

these changes you can predict the weather with reasonable accuracy.

The barometric pressure history graph contains points that show you the

changes in barometric pressure readings taken by the watch for up to the last

18 hours. The time line along the bottom of the graph runs from left to right,

which means that the rightmost point on the graph is the latest reading. The

relative positions of the points on the graph indicate whether barometric

pressure is rising, falling, or holding relatively steady.

• No point is plotted on the graph whenever a measurement operation fails

due to sensor malfunction, low battery power, or any other reason.

Relatively steady (within

3hPa)

Rising (rise greater than 3hPa)

Falling (fall greater than 3hPa)

The following shows how to interpret the data that appears on the barometric

pressure history graph.

A rising graph generally means improving weather.

A falling graph generally means deteriorating weather.

To adjust the analog time

1.In the Timekeeping Mode, press D four times

to enter the Hand Setting Mode.

2.Hold down A until the current digital time

starts to flash, which indicates the analog time

setting screen.

3.Press E to advance the analog time setting by

20 seconds.

• Holding down E advances the analog time setting at high speed.

• If you need to advance the analog time setting a long way, hold down

E until the time starts advancing at high speed, and then press B.

This locks the high-speed hand movement, so you can release the two

buttons. High-speed hand movement continues until you press any

button. It will also stop automatically after the time advances 12 hours

or if an alarm starts to sound.

4. Press A to exit the setting screen.

• To return to the Timekeeping Mode, press D.

• During measurement the watch displays an angle value and four direction

pointers of the first reading, which change dynamically when the watch is

moved. After measurement is complete, the angle value and four direction

pointers are frozen in accordance with the last measurement.

• The

indicator flashes on the display while a measurement is in progress.

About Barometric and Temperature Measurements

• Barometric pressure and temperature measurement operations are

performed as soon as you enter the Barometer/Thermometer Mode. After

that, barometric pressure and temperature measurements are taken every

five seconds for the first three minutes.

• The

indicator to the left of “BAROMETER” on the display flashes while a

measurement is in progress.

• The barometer automatically takes measurements every three hours

(starting from midnight), regardless of what mode you are in. The results of

these measurements are used for plotting points on the barometric

pressure history graph.

• You can also perform a barometric pressure and temperature measurement

at any time by pressing B in the Barometer/Thermometer Mode.

Operation Guide 2766

Barometer and Thermometer Precautions

• The pressure sensor built into this watch measures changes in air

pressure, which you can then apply to your own weather predictions. It is

not intended for use as a precision instrument in official weather prediction

or reporting applications.

• Sudden temperature changes can affect pressure sensor readings.

• Temperature measurements are affected by your body temperature (while

you are wearing the watch), direct sunlight, and moisture. To achieve a

more accurate temperature measurement, remove the watch from your

wrist, place it in a well ventilated location out of direct sunlight, and wipe off

all moisture from the case. It takes approximately 20 to 30 minutes for the

case of the watch to reach the actual surrounding temperature.

Altimeter

A built-in altimeter uses a pressure sensor to detect the current air pressure,

which is then used to estimate the current altitude. The watch is pre-

programmed with ISA (International Standard Atmosphere) preset values,

which are used to convert air pressure readings to altitude values. If you

preset a reference altitude, the watch will also calculate the current relative

altitude based on your preset value. Memory is also provided for the storage

of altimeter data.

Important!

• This watch estimates altitude based on air pressure. This means that

altitude readings for the same location may vary if air pressure changes.

• This watch employs a semiconductor pressure sensor, which is affected by

temperature changes. Make sure that the watch is not being exposed to

temperature changes while you are taking altitude measurements.

• To avoid the effect of sudden temperature changes on measurement, wear

the watch so it is in direct contact with your wrist during measurement.

• Do not rely upon this watch for altitude measurements or perform button

operations while engaging in sports where there are sudden altitude

changes, while sky diving, hang gliding, or paragliding, or while riding a

gyrocopter, glider, or any other aircraft.

• Do not use this watch for measuring altitude in applications that demand

professional or industrial level precision.

• Remember that the air inside of a commercial aircraft is pressurized.

Because of this, the readings produced by this watch will not match the

altitude readings announced or indicated by the flight crew.

How the Altimeter Works

With the Preset Values (No Reference Altitude)

• The watch measures the air pressure at your current location and uses the

built-in ISA values to convert it to the equivalent altitude.

With a Reference Altitude

• If you set a reference altitude, the watch

uses that value when calculating altitude

based on air pressure.

• To determine the height of a tall building,

set the reference altitude to 0 on the

ground floor. Note, however, that you may

not be able to get a good reading if the

building is pressurized or air-conditioned.

• When mountain climbing, you can set the

reference value in accordance with a

marker along the way or altitude

information from a map. After you do this,

the altitude readings produced by the

watch will be more accurate than they

would without a reference altitude.

400

To take an altitude reading

Pressing E in the Timekeeping Mode or in any

of the other sensor modes enters the Altimeter

Mode and automatically starts altitude

measurement.

• It can take up to four or five seconds for the

altitude reading to appear after you enter the

Altimeter Mode.

• The Altimeter Mode screen also displays the

current temperature. See “Barometer/

Thermometer” for more information.

• During the first three minutes after entering the

Altimeter Mode, the

indicator flashes on the

display and measurements are taken every five

seconds. After that, the

indicator stops

flashing and remains on the display as

measurements are taken every two minutes.

Altitude

Temperature

Setting a Reference Altitude

After you set a reference altitude, the watch adjusts its air-pressure-to-altitude

conversion calculation accordingly. The altitude measurements produced by

this watch are subject to error caused by changes in air pressure. Because of

this, we recommend that you update the reference altitude whenever one is

available during your climb.

To set a reference altitude

1. In the Altimeter Mode, hold down A for about

two seconds until the watch beeps and the

display goes blank. About four or five seconds

after that,

OFF or the current reference

altitude value (if set) will flash on the display.

• If

OFF or the current reference altitude

value does not appear at this time, press A

to return to the Altimeter Mode screen, and

perform step 1 again.

2. Press E (+) or B (–) to change the current

reference altitude value by 5 meters.

Altitude Records

Storing altitude data in memory creates an altitude record. If a reading is

greater than all of the other altitude readings currently stored in memory, it is

stored in the maximum altitude record. The following describes the contents

of each type of record.

Recording date (year, month, day), time, and altitude: Up to 41 records

Maximum altitude (including recording date and time): 1 record

• The maximum altitude record shows information about the altitude record

that has the greatest altitude value. The maximum altitude record is

updated any time a reading produces an altitude that is greater than that of

the current maximum altitude record.

• Pressing E causes the measurement operation to restart from the

beginning of the cycle described above.

• Altitude is displayed in units of 5 meters.

• The measurement range for altitude is –700 to 10,000 meters.

• The measured altitude may be a negative value in cases where there is a

reference altitude value set or because of certain atmospheric conditions.

• The displayed altitude value changes to

xxxxx meters if a measured

altitude falls outside the measurement range. The altitude value will be

displayed again as soon as the measured altitude is within the allowable

range.

• You can set the reference altitude within the range of –10,000 to 10,000

meters.

• Pressing E and B at the same time returns to

OFF(no reference

altitude), so the watch performs air pressure to altitude conversions

based on preset data only.

3. Press A to exit the setting screen.

To store an altitude record in memory

In the Altimeter Mode, hold down E for about

one second until the watch beeps. This indicates

that a record of the altitude reading (date, time,

and altitude) has been stored in memory.

• You can recall data in memory using the Data

Recall Mode.

• Note that there is enough memory to store a

total of 41 records. If there are already 41

records in memory, storing another one

automatically deletes the oldest record to make

room for the new one.

To view altitude record data

1. Use D to enter the Data Recall Mode.

• The message RECALL appears for about one second, followed by

maximum altitude record.

2. Press E to cycle through the altitude record screens in the sequence

shown below.

• The maximum altitude record appears first. After that, each press of E

scrolls through records in sequence, starting from the oldest record.

• For each record, the lower part of the display alternates at one-second

intervals between the recording time and altitude value.

• If an error occurs while altitude data is being stored in memory or if there is

no altitude data in memory, xxxx is shown for the measured altitude

value on the corresponding altitude record screen.

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