USERS GUIDE
NR2310D-O/G
REVISION
M
DATE
071720
Page #:
7
www.novuspower.com
Atomic Oscillator
Another type of time base 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.
RUBIDIUM SOURCE TYPICAL PHASE NOISE PERFORMANCE
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-R/O has phase noise improved by well over
20 dB by this technique.