Development of a new device for precise timing

Details Development of a new device for precise timing Development of a new device for precise timing

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001rnaoj...5...73h&link_type=abstract

Report of the National Astronomical Observatory of Japan (ISSN 0915-6321), Vol. 5, No. 3, p. 73 - 79 (2001)

Computer Science

Sound

2

Clocks, Timing

Scientific paper

The Japanese shortwave time signals JJY were shut down on 2001 March 31st. Astronomers who have been using JJY are seeking alternative methods for precise timing. We designed equipment, called the GHS Clock, that can be used with inexpensive GPS receivers to produce both an LED flash and a pip sound at the beginning of each second. According to the GPS receiver manual, this device has an accuracy better than 500 nano-seconds, and our tests show that it usually has an accuracy better than 200 nano-seconds.

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