
Operation Guide 2872
• The |
Mode is applied in all modes. |
• The year can be set in the range of 2000 to 2039. The day of the week is |
calculated automatically in accordance with the date you set. |
• The watch’s |
month lengths and leap years. Once you set the date, there should be no |
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
reason to change it except when battery power drops to Level 4. |
Digital Compass
A
•You can calibrate the bearing sensor if you suspect the direction reading is incorrect.
To enter and exit the Digital Compass Mode
12 o’clock position | 1. While in the Timekeeping or in any of the other |
Temperature
Barometric Barometric
pressure pressure indicators
Pressing E in the the Timekeeping or in any of other sensor modes enters the Barometer/ Thermometer Mode and automatically starts taking barometric pressure and temperature measurements.
•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 (or 0.05 inHg).
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| Compass Mode. |
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| Digital Compass operation. After about two | ||
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| l | seconds, letters appear on the display to |
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| indicate the direction that the 12 o’clock |
Timekeeping |
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| 2. Press C to return to the Timekeeping Mode. | |||||||
Mode time |
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To take a direction reading
• The displayed barometric pressure value changes to xxxx hPa (or inHg) if | |
| a measured barometric pressure falls outside the range of 260 hPa to 1100 |
| hPa (7.65 inHg to 32.45 inHg). 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 (or 0.2°F). |
• | The displayed temperature value changes to xxx °C (or °F) if a measured |
| temperature falls outside the range of |
| 140.0°F). The temperature value will be displayed again as soon as the |
| measured temperature is within the allowable range. |
• In some areas, barometric pressure is expressed in millibars (mb) instead | |
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Magnetic north pointer
12 o’clock position
Direction indicator
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Angle value (in degrees)
270° | NW NW NN | W | 0° | |||
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SW |
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SSW |
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180° | ES | S | ESE | 90° | ||
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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 B to start a Digital Compass
measurement 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.
•After the first reading is obtained, the watch continues to take direction readings automatically each second, for up to 20 seconds.
• | You can select either hectopascals (hPa) or inchesHg (inHg) as the display |
| unit for the measured barometric pressure, and Celsius (°C) or Fahrenheit |
| (°F) as the display unit for the measured temperature value. See “To |
| change the barometric pressure and temperature units”. |
• | See “Barometer and Thermometer Precautions” for important precautions. |
Barometric Pressure Indicators
The watch’s barometric pressure indicators graphically show you whether the barometric pressure for up to the last 15 hours has been rising, holding steady, or falling. Since changes in barometric pressure signal changes in the atmosphere, you can predict upcoming weather with reasonable accuracy by looking at the current tendency of barometric pressure.
The barometric pressure indicator display area of the watch has three lines: top, middle, and bottom. The location of each indicator tells you whether barometric pressure is rising, steady, or falling.
Rise greater than 3hPa from previous reading
Within ±2hPa of previous reading
•During measurement, the watch displays an angle value, a direction indicator, and four direction pointers, which change dynamically when the watch is moved. After measurement is complete, the angle value, direction indicator, and four direction pointers are frozen in accordance with the last measurement.
•The indicator flashes on the display while a measurement is in progress.
Note
•Note that taking a measurement while the watch is not horizontal
(in relation to the horizon) can result in large measurement error.
•The margin of error for the angle value is ±11 degrees. If the indicated direction is northwest (NW) and 315 degrees, for example, the actual direction can be anywhere from 304 to 326 degrees.
•Any ongoing direction measurement operation is temporarily paused while the watch is performing an alert operation (daily alarm, Hourly Time Signal, countdown timer alarm) 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 it to pause is finished.
•The following table shows the meanings of each of the direction abbreviations that appear on the display.
Direction | Meaning | Direction | Meaning | Direction | Meaning | Direction | Meaning | |
N | North | NNE | North- | NE | Northeast | ENE | East- | |
northeast | northeast | |||||||
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E | East | ESE | East- | SE | Southeast | SSE | South- | |
southeast | southeast | |||||||
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S | South | SSW | South- | SW | Southwest | WSW | West- | |
southwest | southwest | |||||||
W | West | WNW | West- | NW | Northwest | NNW | North- | |
northwest | northwest |
•See “Digital Compass Precautions” for other important imformation about taking direction readings.
Fall greater than 3hPa from previous reading
How to Interpret Barometric Pressure Indicators
•The rightmost indicator is the newest indicator, the leftmost indicator is the oldest indicator.
Rising pressure generally means improving weather.
Falling pressure generally means deteriorating weather.
•The locations of the indicators, not their pattern, indicates barometric pressure tendencies.
•A series of multiple indicators in the top line of the barometric pressure indicator display area indicates a series of rising pressure readings. It does not indicate steady pressure at a high level.
•A series of multiple indicators in the bottom line of the barometric pressure
indicator display area indicates a series of falling pressure readings. It does not indicate steady pressure at a low level.
• A movement of indicators from the top line to the middle line does not indicate falling pressure, and a movement of indicators from the bottom line to
the middle line does not indicate rising pressure. A move to the middle line indicates that the current
pressure measurement is relatively unchanged (within ±2hPa) from the previous measurement. Rising pressure is not indicated until an indicator
appears in the top line, and falling pressure is not indicated until an indicator appears in the bottom line.
•Steady pressure is indicated by a series of indicators in the middle line.
Notes
•Though you can configure the watch to display barometric pressure in units of hPa or inHg, the barometric pressure indicator positions are always determined based on ±3 hPa changes in barometric pressure.
•No indicator is plotted if a measurement operation cannot be performed due to sensor malfunction, low battery power, because of the watch is in the function sleep state, or any other reason.
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