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Manafacture: Delta File size: 587.75 kb File name: cfedb455-101d-43a9-bf50-0fdbe7cfaa99.pdf Language of manual:

Scrolling •B is used to change the hand setting in various setting modes. In most cases, holding down this button will start high-speed movement of the applicable hand(s). •High-speed movement of hands will continue until you press any button, or until the moving hand(s) finishes one complete cycle. - One complete cycle for the hands is one revolution (360 degrees) or 24 hours. Radio-controlled Atomic Timekeeping Precautions •Strong electrostatic charge can result in the wrong time being set. •The time calibration signal bounces off the ionosphere. Because of this, such factors as changes in the reflectivity of the ionosphere, as well as movement of the ionosphere to higher altitudes due to seasonal atmospheric changes or the time of day may change the reception range of the signal and make reception temporarily impossible. •Even if the time calibration signal is received properly, certain conditions can cause the time setting to be off by up to one second. •The current time setting in accordance with the time calibration signal takes priority over any time settings you make manually. •The watch is designed to update the date and day of the week automatically for the period January 1, 2001 to December 31, 2099. Setting of the date by the time calibration signal cannot be performed starting from January 1, 2100. •This watch can receive signals that differentiate between leap years and non-leap years. •Though this watch is designed to receive both time data (hour, minutes, seconds) and date data (year, month, day), certain signal conditions can limit reception to time data only. •If you are in an area where proper time calibration signal reception is impossible, the watch keeps time within ±20 seconds a month at normal temperature. •If you have problems with proper time calibration signal reception or if the time setting is wrong after signal reception, check your current time zone, and DST (summer time). Timekeeping •The year can be set in the range of 2001 to 2099. •The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced. •The date will change automatically when the current time reaches midnight. The date change at the end of the month may take more time than normal. •The current time for all time zones in the Timekeeping Mode and Dual Time Mode is calculated in accordance with the Greenwich Mean Time (GMT) differential of each zone, based on your Home Time Zone time setting. • GMT differential is calculated by this watch based on Universal Time Coordinated (UTC*) data. * UTC is the world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s rotation. The reference point for UTC is Greenwich, England. Illumination Precautions •The illumination provided by the light may be hard to see when viewed under direct sunlight. •Illumination automatically turns off whenever an alarm sounds. •Frequent use of illumination shortens the battery operating time. 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 illuminate the face of the watch. To avoid running down the battery, turn off the auto light switch whenever engaging in activities that might cause frequent illumination of the face. •Note that wearing the watch under your sleeve while the auto light switch is turned on can cause frequent illumination of the face and can run down the battery. •Illumination may not turn on if the face of the watch is more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground. •Illumination turns off after about 1.5 seconds, even if you keep the watch pointed towards your face. More than 15 degrees too high •Static electricity or magnetic force can interfere with proper operation of the auto light switch. If illumination does not turn on, try moving the watch back to the starting position (parallel with the ground) and then tilt it back towards your face 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, illumination may not turn on until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the auto light switch. •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. Tachymeter If your watch has a tachymeter bezel, you can perform the steps below to calculate average speed after using the Stopw...

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