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Casio 2891 - page 1
Operation Guide 2891 1 Y our watch runs on electrical power generated from light and stored by a chargeable battery . To ensure stable operation, make sure that the solar cell of the watch is exposed to light as much as possible. 1. How the solar cell and battery work When exposed to light Light Power supplied to watch Solar cell Electrical energy ...
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Casio 2891 - page 2
Operation Guide 2891 2 • Each press of the D button causes the watch to beep and cycles through the Recall Mode, World Time Mode, Stopwatch Mode, T imer Mode, Alarm Mode, and Receive Mode as shown below. • If you do not perform any button operation for two or three minutes while in the Recall Mode, Alarm Mode, Receive Mode, Compass Mode, or Pre ...
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Casio 2891 - page 3
Operation Guide 2891 3 The power supply of this watch uses a solar cell to generate electrical power , which is stored by a rechargeable battery . Using or storing the watch where it is not exposed to light regularly or allowing it to be blocked from light by your sleeve as you are wearing it can cause the power of the rechargeable battery to run d ...
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Casio 2891 - page 4
Operation Guide 2891 4 ❚ Positioning Y our Arm Correctly • Y ou should be wearing the watch on the outside of your wrist when using the full auto light switch. • Make sure that the left (9 o’clock) and right (3 o’clock) sides of the watch are within ± 15 degrees of being parallel with the ground. The full auto light switch may not operat ...
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Casio 2891 - page 5
Operation Guide 2891 5 What is a radio-controlled watch? Y our radio-controlled watch is designed to receive a time calibration signal that contains standard time data, and adjust its current time setting accordingly . Signal is received by built-in antenna. Signal data Cesium atomic clock Tr ansmitter Long-wave time calibration signal Internally D ...
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Casio 2891 - page 6
Operation Guide 2891 6 1. In the Timekeeping Mode, press the D D D D D button six times to display the last reception date and time. 2. Hold down the E E E E E button for about two seconds until the current O n /OFF setting starts to flash on the display . This is the setting screen. Configuring Auto Receive Settings Use the procedure below to turn ...
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Casio 2891 - page 7
Operation Guide 2891 7 Y our watch uses a built-in magnetic sensor to detect and display direction. Y ou can use displayed data to determine the direction to an objective or your current bearing. • If you have reason to suspect that direction readings are not correct, you can calibrate the direction sensor using the procedure under “Calibrating ...
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Casio 2891 - page 8
Operation Guide 2891 8 ❚ To perform 2-point calibration 1. In the Timekeeping Mode, press the A A A A A button to enter the Compass Mode. 2. Hold down the E E E E E button for about two seconds until “–1–” appears on the display • This is the 2-point calibration screen. 3. While “–1–” is on the display , hold the watch so it is ...
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Casio 2891 - page 9
Operation Guide 2891 9 Digital Compass Reference ❚ What is a digital compass? The Earth is like a giant magnet with a north pole and a south pole. The magnetism of the Earth is called “terrestrial magnetism”. The magnetic sensor of your watch is a magnetic compass that detects terrestrial magnetism to determine direction. Earth ❚ Magnetic c ...
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Casio 2891 - page 10
Operation Guide 2891 10 Interpreting the Pressure T endency Graph Example Pressure T endency Graphs The following examples show how you can predict upcoming weather conditions based on the pressure tendency graph. When using the pressure tendency graph, remember that changes in your altitude and environmental conditions can affect air pressure and ...
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Casio 2891 - page 11
Operation Guide 2891 11 Calibrating the T emperature Sensor The temperature sensor is calibrated at the factory , and further calibration normally is not required. Perform the following operation only when you find that a temperature reading taken with another accurate instrument is very different from the reading produced by your watch. T ake care ...
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Casio 2891 - page 12
Operation Guide 2891 12 The watch uses International Standard Atmosphere (ISA) values that are defined by the International Civil A viation Organization (ICAO) to convert readings taken by its built-in pressure sensor to relative altitude values. Important! When taking altitude readings, make sure that the temperature of the watch is kept as stable ...
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Casio 2891 - page 13
Operation Guide 2891 13 Using the Altitude Alarm The altitude alarm sounds for five seconds when the measured altitude value is in excess of a preset target altitude. Note that the altitude alarm is enabled in the Altitude Mode only . Example: If the target altitude value is 130 meters, the alarm will sound when either of the following conditions i ...
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Casio 2891 - page 14
Operation Guide 2891 14 Cumulative Data In the Recall Mode, each press of the B button toggles the display between the altitude record screen and the cumulative data screen. Altitude Record Screen Cumulative Data Screen When the cumulative data screen is displayed, use the C (forward) and A (back) buttons to scroll through the cumulative data. • ...
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Casio 2891 - page 15
Operation Guide 2891 15 Altitude Reading Precautions Readings that are close to the absolute altitude above sea level are not possible under the following conditions. • During volatile weather conditions • During sudden temperature changes • When the watch is being subjected to strong impact ❚ Altitude T erminology There are two different m ...
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Casio 2891 - page 16
Operation Guide 2891 16 Y ou can set the start time of the timer in units of one minute in the range of 1 to 60 minutes. The watch beeps for 5 seconds when the end of the countdown is reached. T urning on the watch’s auto repeat timer feature causes the countdown to restart from the start time whenever the end of the countdown is reached. T imer ...
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Casio 2891 - page 17
Operation Guide 2891 17 4. Press the D D D D D button to move the flashing to the minute digits. • As with the hour setting, use the C (+) and A (–) buttons to change the minute setting. 5. When the setting is the way you want, press the E E E E E button to exit the setting screen and return to the timer mode screen. • This exits the setting ...
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Casio 2891 - page 18
Operation Guide 2891 18 4. Press the C C C C C button to cycle through the summer time settings until the one you want is displayed. • AT (Auto) This setting enables the auto summer time setting, which turns summer time on or off in accordance with the received time calibration signal. • When TYO (T okyo) is selected at the Home City , this set ...
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