Casio 2273 User Manual

Module No. 2273

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GETTING ACQUAINTED

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

• 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 using this watch to take readings while boating or engaging in any other activity during which losing your way can create a dangerous or life-threatening situation, always be sure to use a second compass to confirm direction readings.

• The longitude, lunitidal interval, Moon phase indicator, and tide graph data that appears on the display of this watch is not intended for navigation purposes. Always use proper instruments and resources to obtain data for navigation purposes.

• This watch is not an instrument for calculating low tide and high tide times. The Tide Graph of this watch is intended to provide a reasonable approximation of tidal movements only.

• 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.

Warning!

GENERAL GUIDE

• If the digital display of your watch is continuously changing, see “Auto Display Function” for information on how to stop it.

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

Timekeeping Mode

▲

Press B or C.

▲

Press D.

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)

• Press B to enter the Digital Compass Mode or C to enter the Barometer/ Thermometer Mode from the Timekeeping Mode or Countdown Timer/ Stopwatch Mode. To get to a sensor mode from the Moon/Tide or Alarm Mode, you must go to the Timekeeping Mode first.

Sensor Mode

Digital Compass Mode

▲

Alarm Mode

Moon phase indicator

Day of week

Tide graph

Hour : Minutes

Year Month – Day

PM indicator

Press D.

Countdown Timer/Stopwatch Mode

▲

TIMEKEEPING

In addition to normal timekeeping, use the Timekeeping Mode to set the current time and date.

• The Moon phase indicator shows the current Moon phase.

• The tide graph shows the current tidal movements.

Important!

• The watch cannot produce correct Moon phase or tide graph data unless the Timekeeping Mode current time and date settings, as well as city data settings (GMT

Seconds

differential, longitudes, and lunitidal interval) are all correct.

▲

Press B or C.

▲

Press D.

▲

Press B. Press C.

▲

Barometer/

Thermometer Mode

▲

Moon/Tide Mode

• Having the batteries replaced causes the Timekeeping Mode’s time/date and city data settings to revert to their initial factory default settings. Use the following procedure to set the current time and date, and to make city data settings.

To reset the seconds count to zero

1. In the Timekeeping Mode, hold down A until the second’s digits start to

flash, which indicates the setting screen.

2. Press E to reset the seconds count to

• Pressing E while the seconds count is in the range of 30 to 59 resets the seconds to the minutes count is unchanged.

3. Press A twice to exit the setting screen.

00 and add 1 to the minutes. In the range of 00 to 29,

00.

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To set the time and date

1. In the Timekeeping Mode, hold down A until the second’s digits start to flash, which indicates the setting screen.

• While the second’s digits are flashing,

press E to reset the seconds count to

00.

2. Press D to move the flashing in the sequence shown below to select other settings.

Seconds

Day

3. While the hour, minutes, year, month, or day setting is flashing, use E (+) and B (–) to change it.

• When the 12/24-hour setting is flashing, press E to toggle between

12-hour (

4. Press A twice to exit the setting screen.

Hour

) and 24-hour ( ) timekeeping.

Minutes

Month Year

12/24-Hour Format

Configuring City Data Settings

The Moon phase and tide graph information displayed by this watch differ according to your geographic location. Before using this watch to produce such information, be sure to make the proper city data settings to specify your current location.

• The lunitidal interval is the time elapsing between the Moon’s transit over

the meridian and the next high tide. See “Lunitidal Interval” for more information.

• This watch displays lunitidal intervals in term of hours and minutes.

• GMT differential is the difference between the time in the displayed time

and Greenwich Mean Time (GMT).

To configure city data settings

1. In the Timekeeping Mode, hold down A until the second’s digits starts to flash, which indicates the setting screen.

2. Press A again to display the city data setting screen, with the GMT differential flashing.

• Press D to move the flashing in the

sequence shown below to select other

GMT Differential

GMT

Differential

3. Use E (+) and B (–) to change the setting of the currently selected (flashing) item.

• The “CITY DATA LIST” provides city data information for a number of

GMT differentials, longitudes, and lunitidal intervals around the world.

• You can change the GMT differential setting in units of 0.5 (half an

hour).

• Longitude can be specified in the range of 179°W to 180°E, in 1-degree

steps.

4. Press A to exit the setting screen.

Longitude

settings.

Lunitidal Interval

Hours Minutes

DIGITAL COMPASS

A built-in bearing sensor detects magnetic north and indicates one of 16 directions on the display. 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

While in the Timekeeping, Barometer/Thermometer, or Countdown Timer/ Stopwatch Mode, press B to enter the Digital Compass Mode.

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

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

• Press D to return to the Timekeeping Mode.

To take a direction reading

12 o’clock position

Magnetic

Direction

Direction value (in degrees)

Note

• Note that taking a measurement while the watch is not horizontal (in relation to the horizon) can result in large measurement error.

• Pressing B while in the Digital Compass Mode starts a new direction measurement operation.

• The following table shows the meanings of each of the direction abbreviations that appear on the display.

Direction

North Pointer

Timekeeping Mode time

WNW

Meaning

Direction

North

East

South

West

Direction bezel

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 determine.

4. Press B to start a Digital Compass 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.

• Direction reading continues for the

amount of time that is currently specified for the continuous reading

0°

time.

• The COMP indicator flashes on the

display while a reading is in progress.

• The direction value that appears on the

display represents the clockwise angle formed between magnetic north (which is 0 degrees) and the displayed direction.

Meaning

northeast

southeast

southwest

northwest

Direction

North-

East-

South-

West-

• You can adjust the rotary direction bezel so

that the “ magnetic north pointer. This correctly aligns all of the markings on the bezel.

• The Digital Compass operation is

momentarily interrupted while an alarm (Daily Alarm or Hourly Time Signal) or beep (progress or time up beeper) is sounding, or while the backlight is turned on by the Auto Light Switch. If this happens, start the Digital Compass operation again from the beginning.

• See “Digital Compass Precautions” for other

important information about taking direction readings.

Meaning

Northeast

Southeast

Southwest

Northwest

” (or “N”) is aligned with the

Direction

Meaning

East-

northeast

South-

southeast

West-

southwest

North-

northwest

Making Digital Compass Settings

You can set up the watch so it takes continuous direction readings for an amount of time specified by you.

To configure the Digital Compass Mode

1. In the Digital Compass Mode, hold down A until the upper display area shows

2. Press D twice to display the continuous

3. While the continuous reading time digits

4. Press A to exit the setting screen.

, which indicates the setting screen.

reading time setting screen.

are selected (flashing), use E (+) and B (–) to change the setting in increments of 10 seconds.

• You can specify a continuous reading

time in the range of 0'00'' to 1'00''. Setting 0'00'' causes digital compass operation to stop after a single reading.

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BAROMETER/THERMOMETER

This watch uses a pressure sensor to measure air pressure (barometric pressure) and a temperature sensor to measure a temperature.

• You can calibrate the temperature sensor and the pressure sensor if you suspect that readings are incorrect.

Understanding the Barometer/Thermometer Screen

Barometric pressure graph (unit: 1hPa (mb)/0.05inHg)

Barometric pressure

• The displayed temperature value changes to

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

Temperature

measured temperature falls outside the range of –10.0°C to 60.0°C (14.0°F to 140.0°F). The temperature value will be displayed again as soon as the measured temperature is within the allowable range.

millibars (mb). It really makes no difference, because 1hPa = 1mb. In this manual, we use hPa/mb or hPa (mb).

Barometric Pressure Graph

Barometric pressure indicates changes in the atmosphere. By monitoring these changes you can predict the weather with reasonable accuracy. The barometric pressure graph shows the barometric readings for the past 26 hours. The flashing point on the right of the display is the point for the newest measurement. Note that pressure graph readings are relative to the newest measurement point. One dot above the newest point is plus 1hPa(mb)/

0.05inHg, while one dot below is minus 1hPa(mb)/0.05inHg. The following

shows how to interpret the data that appears on the barometric pressure graph.

Note that if there are sudden changes in weather or temperature, the graph line of past measurements may run off the top or bottom of the display. The entire graph will become visible once barometric conditions stabilize. The following conditions cause the barometric pressure measurement to be skipped, with the corresponding point on the barometric pressure graph being left blank.

• Barometric reading that is out of range (260hPa/mb to 1100hPa/mb or

7.65inHg to 32.45inHg)

• Sensor malfunction

• Dead batteries

About Barometric and Temperature Measurements

• Barometric pressure and temperature measurement operations are performed as soon as you enter the Barometer/Thermometer Mode. After that, temperature measurements are taken every five seconds for the first three minutes, and then taken every five minutes thereafter.

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

• The barometer automatically takes measurements every two hours (starting from midnight), regardless of what mode you are in. The results of these measurements are used for the barometric pressure graph.

• You can also perform a barometric pressure and temperature measurement at any time by pressing C in the Barometer/Thermometer Mode.

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.

• You can change the measured barometric pressure unit between hectopascals/millibars (hPa/mb) and inchesHg (inHg). See “Changing the Barometric Pressure and Temperature Units” for details.

• You can change the measured temperature value displayed by this watch between Celsius (°C) and Fahrenheit (°F). See “Changing the Barometric Pressure and Temperature Units”.

Press C to enter the Barometer/Thermometer Mode.

• Barometric pressure is displayed in units of 1hPa/mb (or 0.05inHg).

• Temperature is displayed in units of 0.1°C (or 0.2°F).

• The displayed barometric pressure value changes to measured barometric pressure falls outside the range of 260hPa/mb to 1100hPa/mb (7.65inHg to 32.45inHg). The barometric pressure value will be displayed again as soon as the measured barometric pressure is within the allowable range.

A rising graph generally means improving weather.

A falling graph generally means deteriorating weather.

xxxx hPa/mb (or inHg) if a

xx. x °C (or °F) if a

Not visible on the display.

COUNTDOWN TIMER

With the countdown timer, you can set a start time in the range of 1 to 60 minutes, and countdown the time to zero. A beeper sounds each second of the final 10 seconds of a countdown, and you can also turn on a progress beeper that beeps at various times during a countdown. All of this makes the countdown timer a valuable tool for timing the start of a yacht race.

• The countdown timer also can be used as a stopwatch to measure elapsed time, split time, and two finishes. See “STOPWATCH” for more information.

• All the operations in this section are performed in the Countdown Timer/ Stopwatch Mode, which you can enter by pressing D.

Configuring the Countdown Timer

You need to make the settings listed below before actually using the Countdown Timer for timing.

• Countdown start time and reset time

• Auto repeat/repeat, progress beeper on/off

• Graphic on/off

Reset time

You can set a “reset time,” which is a kind of alternate countdown start time you can recall with the press of a button any time a countdown operation is in progress. After recalling the reset time, you can press E to restart the countdown operation from the recalled reset time.

Auto Repeat and Repeat

The countdown timer gives you a choice of two different repeat modes: auto repeat and repeat.

Auto Repeat

When auto repeat is turned on, the countdown automatically restarts from the countdown start time whenever it reaches zero.

Note

• Even if you start a countdown operation from the reset time, the countdown automatically restarts from the countdown start time whenever it reaches zero.

• Auto repeat timing repeats 100 times or until you press E to stop the countdown.

• Auto repeat timing is best when timing the starts of match races.

Repeat Timing

When repeat timing is turned on, the watch automatically switches to the Stopwatch Mode and starts stopwatch timing when the end of the countdown is reached.

▲

Countdown Timer Mode

Note

Repeat timing is best when timing the speed of yachts during ocean races.

To set the countdown start time and reset time

Countdown start time setting indicator

Timekeeping Mode time

4. While the reset time is flashing, use E (+) and B (–) to change it in one-

minute increments.

• You can set a reset time in the range of 1'00" to 5'00".

5. After making the setting you want, press A to exit the setting screen.

Important!

The reset time setting must be less than the countdown start time setting.

1. While in the Countdown Timer/Stopwatch Mode, hold down A until the time setting starts to flash, which indicates the setting screen.

• This causes the

appear on the display.

2. While the countdown start time setting is flashing, use E (+) and B (–) to change it in one-minute increments.

• You must set a countdown start time in

the range of 1'00" to 60'00".

3. Press D to display the reset time setting screen.

• The indicator in the upper display area

changes from indicate the reset time setting screen.

Stopwatch Mode

indicator to

to to

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