Users manual
NR3700-O/G
Revision #:
A
Date:
9-13-16
Page #:
5 of 19
2.0 Crystal
Novus crystal based frequency reference products are based upon either TCXO or
OCXO technology. Temperature compensated crystal oscillators will normally use an
AT cut crystal and electronically compensate the device with temperature. An OCXO
device uses a SC (stress compensated) crystal and the part is held at a fixed
temperature to minimize temperature drift.
The TCXO implementation results in a temperature stable reference in the single digit
parts per million. An OCXO device affords a reference that is almost 2 orders of
magnitude more stable than the TCXO.
Comparison of an AT versus a SC cut crystal
