Novus NR2110-OG, Руководство пользователя

Страница: 30 / 104

Users manual NR2110-OG
Revision #: J
Date:
3/17/17
Page #: 30 of 46 www.novuspower.com
Typical OCXO
Another alternative for a frequency reference is an atomic reference. These devices use a
change in atomic state of an isotope of Cesium or Rubidium for stability. Instead of a
stability of ±50 ppb/year for a typical OCXO- stability of ±1 ppb/year is very common.
Atomic sources are very complex and while a very stable source, phase noise
performance may not be acceptable for many applications.
Typical phase noise performance for a Rubidium source
For applications requiring the stability of an atomic source but also requiring low phase
noise a low phase noise OCXO is disciplined to an atomic source. The phase noise for the
NR2110-RO has phase noise improved by well over 20 dB by this technique.