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Long-term stability
The
long-term
stability
of an
oscillator
is the
degree
of
uniformity
of
frequency
over time
, when the frequency is
measured
under
identical
environmental
conditions
, such as
supply
voltage
,
load
, and
temperature
.
Long-term
frequency
changes
are
caused
by changes in the oscillator
elements
that
determine
frequency, such as
crystal
drift
,
inductance
changes, and
capacitance
changes.