Quasi-P
eak
Detection
Many
in
ternational
EMI
regulations
based
on
CISPR
standards
p ermit
use
of
a
quasi-p eak
detector.
The
quasi-p eak
detector
has
three
sets
of
c
harge
and
disc
harge
time
constan
ts,
dep ending
on
the
frequency
range
selected.
Because
of
these
fast
c
harge
and
slow
disc
harge
time
constan
ts,
the
output
of
the
quasi-p eak
detector
dep ends
on
the
rep etition
rate
of
the
broadband
signal.
See
Figure
4-7.
Figure
4-7.
Quasi-P
eak
Detection
4-8
Making
Typical
Measurements
HP
8572A
EMI
Receiv
er
User's
Guide