INTRODUCTION
About Your Atomic Clock
In addition to a regular quartz time clock, the Model 7500E contains an antenna and a microchip. The antenna receives the official time signal from the U.S. Government's National Institute of Standards and Technology and the microchip translates the time signal and adjusts the time display to the correct time. The Model 7500E receives a 60-kilohertz, low frequency AM radio signal from the WWVB radio station maintained by the National Institute of Standards and Technology (NIST). The NIST, using its atomic clock, is the official timekeeper for the U.S. and is located in Boulder, Colorado. The Model 7500E will work anywhere it can receive the WWVB signal from the NIST. This signal is broadcast to reach across the continental U.S. and into parts of Canada and Mexico. To learn more about the NIST time correction technology used in the Model 7500E, you can visit: http://tf.nist.gov/stations/wwvb.htm
