User`s guide

Summary Plot
This view contains many calculated PLL characteristics such as damping factor, natural frequency, input
noise level, lock range, lock-in time, pull-in time, pull-out range, and noise bandwidth.
Data summary and PLL characteristics
The PLL characteristics provided in the summary window are the following:
• Damping factor –
ζ as defined in Eq. 1 (see PLL Analysis Theory).
• Natural frequency –
ω
n
as defined in Eq. 1.
• PSD of noise – level of white input noise.
• Lock range – frequency range within which a PLL can lock within one beat note between the
ω
Ref
and ω
Out
.
• Lock-in time – time scale for PLL to lock into from the lock range.
• Pull-in time – time scale for the PLL to lock from the pull-in range, which is the range within which the
PLL will always lock.
• Pull-out range – the dynamic limit for stable operation of a PLL.
• Noise bandwidth – PLL output phase noise integrated over the bandwidth of the PLL
© WAVECREST Corporation 2005 Section 4 - GigaView
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