著者

松田 勲 相原 勝美 佐々木 信治

出版者

東京工芸大学

雑誌

東京工芸大学工学部紀要 (ISSN:03876055)

巻号頁・発行日

vol.8, no.1, pp.83-87, 1986-01-15

---

The estimating system for the frequency stability was manufactured. The measurement, the data aquisition and the estimation of the stability, etc. are all controlled by a microcomputer PC 8001 mkII. Allan-variance and power spectral density was calculated as the measure of the frequency stability in the time-domain and the frequency-domain respectively. It was found that the tested quartz crystal oscillator had the stability of 1×10^<-11> at 1 sec averaging time and its power spectral density was designated by the sum of the terms of 6×10^<-25> f^<-2> (random walk noise) and 1.5×10^<-22> f^0 (white noise).