Specifications

1
Phase Jitter in the Frequency Domain
Frequency domain jitter may be expressed in units of phase, frequency
fractional frequency, or time. Jitter is the total rms fluctuation of the
particular quanity incurred when integrated over a specified frequency
range.
The square root of the integral of spectral density of phase fluctuations,
S^if), over the (modulation rate range) is the phase jitter of that range.
Frequency domain Phase Jitter in radians
Calculated by the HP 3048A Phase Noise Measurement System using the
following equation.
1
•h
*
rms
[md] = [Sjl S^fW
Frequency domain Phase Jitter in degrees
Calculated by the HP 3048A Phase Noise Measurement System using the
following equation.
1
%
m
s{deg] = ^{S
I
f
lS
4
,(f)df
Calculations are performed when you specify Sphi(f) as the Data Type in the Integrate Noise menu
and enter the appropriate start, and stop frequencies. The results are displayed in radians and degrees.
rev.05SEP89 Jitter 4-29