User manual CHANEY INSTRUMENT MODEL 00581 MORELAND

[. . . ] The atomic clock is a huge piece of scientific equipment and it is so expensive that it is normally found in laboratories and standards institutions etc. Thanks to the latest technology, the accuracy of the atomic clock is now brought to your home. The NIST* (National Institute of Standards and Technology) is broadcasting electronically encoded time signals based on an atomic clock from an antenna in Fort Collins, Colorado to cover the mainland of the United States. The signal is picked up by the radio receiver circuit in your clock, and is then decoded to synchronize the time to within a split of a second precision. [. . . ] The Bars facing the Antenna indicate the strength of the radio signal, no bar means there is no or very weak signal received, one bar indicates a weak signal and 5 bars the strongest (see Fig. Use the radio signal strength indicators to find a location that the reception is strong. If the clock is too close to electrical appliances such as TV, mobile phone and computer they may cause undesirable signal interference. Strong signal is normally found close to the window. In some areas where the signal is poor or less, you may need to position and rotate the clock until the best signal strength is obtained. When the signal strength falls to 2 bars, remove the antenna from the back of clock (Fig. 3) and move the antenna around if necessary but the antenna needs to be kept horizontal for the best reception. Once you have found the optimal position leave the clock still so that it can pick up good signals. It normally takes 3 to 9 minutes to synchronize. Once it is successful, the clock will show extremely accurate time and the correct date. Successful synchronization is symbolized by the still antenna and the radiating beacon. (Fig. 7) A properly synchronized clock attempts to adjust itself with the radio time signal every evening and if it fails for more than 24 hours, the Antenna icon disappears. The clock will still function as a quartz clock until it gets synchronized again. The clock is a radio device and like the mobile phone or the radio, in certain locations and at certain time of the day, it may not be able to pick up signal strong enough to synchronize. The clock will activate auto synchronization at 8:00 p. m. in standard time (9:00pm in DST time) every day. If the clock fails to synchronize in the first attempt, it will make a new attempt at the beginning of every hour afterwards for 7 more times. In most cases, the clock synchronizes overnight as the radio signal is the strongest and cleanest in the early morning. You may leave the clock to synchronize to the right time later or you may temporarily set the clock manually. If user manually sets the time, the clock will start synchronization when the time reaches the beginning of next hour and if fails will try every hour for 2 more times. Manual Setting If necessary the clock can be set manually. Once it is manually set, the clock will attempt to synchronize regularly for 3 days. [. . . ] If you are travelling outside the US mainland, you can offset the hour. 8. 1 To offset time If the mode switch is in OFFSET position you can set any offset value to match the time in any where in the world. You can adjust from 0 up to +23 offset by pressing OFFSET* (and adjust 0 to -23 offset by pressing OFF SET *. ) If you want to reset offset to zero, it can be done by one touch on OFF-SET CLR button while the mode switch is at the OFFSET mode. To read home time, push Home button. 8. 2 To change Home Time from standard to daylight savings and vice versa Push and hold Home button then push DST, once you are at different offset. Note if you are travelling to the India Subcontinent where the local time is half an hour from the main time zones of the world you may reset the clock by taking off the batteries and then manually set the clock to the local time according to the procedure described above. [. . . ]