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Table of Contents
Topic
Initial Set-up
INVENTORY OF CONTENTS
1. The travel alarm
2. Instruction manual
3. Warranty card
ABOUT RADIO-CONTROLLED TIME - WWVB
The NIST (National Institute of Standards and Technology-Time and Frequency
Division) WWVB radio station is located in Ft. Collins, Colorado, and transmits the exact
time and date signal continuously throughout the United States at 60 kHz. The signal can
be received up to 2,000 miles away through the internal antenna in the alarm clock. Due
to the nature of the Earth's Ionosphere, reception is very limited during daylight hours.
The alarm clock will search for a signal every night when reception is best. The WWVB
radio station derives its signal from the NIST Atomic clock in Boulder, Colorado. A
team of atomic physicists is continually measuring every second, of every day, to an
accuracy of ten billionths of a second per day. These physicists have created an
international standard, measuring a second as 9,192,631,770 vibrations of a Cesium-133
atom in a vacuum. More information on the atomic clock and WWVB can be found at
.
www.nist.gov
PROGRAM MODE
Following is a list of steps to set up your new
La Crosse Technology travel alarm clock.
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Figure One
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