User manual LA CROSSE TECHNOLOGY 512A-811

[. . . ] This atomic clock regulates the WWVB radio transmitter located in Fort Collins, Colorado, where the exact time signal is continuously broadcast throughout the United States at 60 kHz to take advantage of stable longwave radio paths found in that frequency range. Radio waves at these low frequencies use the earth and the ionosphere as a wave-guide and follow the curvature of the earth for long distances. The built in antenna system will receive the WWVB signal anywhere in North America within 2000 miles of Fort Collins where long-wave radio reception is undisturbed. A microprocessor activates the receiver and processes the time signal from Fort Collins overnight. [. . . ] A microprocessor activates the receiver and processes the time signal from Fort Collins overnight. Through the radio signals, La Crosse Technology radio controlled clocks always keep precise time. The changeover from standard time to daylight savings time, and vice versa, takes place automatically with the same precision. Additional details To set up your clock simply install one fresh AA, LR6 ALKALINE battery. Due to the nature of long wave radio signals it is normally not possible to receive a signal during the day so it is best to install the battery late in the evening. Select your time zone by pressing one of the four time zone buttons PT-Pacific Time, MT-Mountain Time, CT-Central Time, ET-Eastern Time. The time zone buttons may be pressed any time after installing the batteries. If multiple buttons are pressed the clock will set to the time zone selected last. Another time zone can be selected during or after the clock has set itself. Your clock can only set itself to one of the four time zones stated above. For time zones outside of PT, MT, CT or ET you must manually set the time using the Manual Time set button on the back of the movement. Your La Crosse Technology clock will read this information and automatically advance the hands one hour in the spring and eleven hours in the fall. Arizona and Indiana If you live in an area that does not recognize DST you must press the (unmarked) DST button for one second to deactivate your clock's DST program. To reactivate the DST program simply press the DST button again for one second. If your clock is located in an area with little interference where it can quickly receive a signal the battery will last much longer than one year. Yes, but only in a dry environment and in a temperature range between 41 F and 131 F. Can the La Crosse Technology clock be wired to control timing circuits?Why does the second hand move only once every two seconds, but it moves two seconds per step?When the battery drops below 1. 25 volts the clock indicates that it is time to change the battery by advancing the second hand in two second steps. The operating voltage range is 1. 25 to 1. 75 volts. Warranty La Crosse Technology warrants this clock to be free of any defect in workmanship or materials for a period of one year after the date of purchase. You should notify La Crosse Technology promptly in writing or by e-mail in the event of any defect covered by this warranty. [. . . ] The operating voltage range is 1. 25 to 1. 75 volts. Warranty La Crosse Technology warrants this clock to be free of any defect in workmanship or materials for a period of one year after the date of purchase. You should notify La Crosse Technology promptly in writing or by e-mail in the event of any defect covered by this warranty. When requesting warranty service you must provide evidence of the date of purchase. This warranty does not cover the clock's inability to receive a signal due to interference, whatever may be the source of that interference. [. . . ]