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Users manual
NR3700-O/G
Revision #:
A
Date:
9-13-16
Page #:
7 of 19
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.