Agilent Technologies 83620A User Manual

8.
Spurious
Signals
(Harmonics
&
Subharmonics)
Description
and Procedure
Use this
pro cedure
to
measure
the
syn
thesizer's
harmonics
and
subharmonics
o
v
er
its
en
tire
frequency
range.
Harmonics
are
in
teger
multiples
of the
syn
thesizer
RF
output frequency
and subharmonics
are fractional
multiples
of the
YO
frequency
.
Subharmonics
do
not
exist
at
all
frequencies.
In
lo
w
band,
mixer
spurs
and
fundamen
tal
feedthrough
are
the
most
signican
t
harmonically-related
signals.
The
mixer
spur/YO
frequency
relationship
is
as
follo
ws:
X
(5.4
GHz xed
oscillator) 0
Y(YO
frequency) =
Mixer
Spur
F
requency
where
X
and
Y
are in
tegers.
Other
harmonics
are t
ypically direct
m
ultiples
of
the
YO
frequency
.
In
this
pro cedure,
the
syn
thesizer
is
man
ually
sw
ept
o
v
er
its
frequency
range
while
the
sp
ectrum
analyzer
measures
the
harmonics
and
subharmonics in
eac
h
frequency
band.
An
y
harmonics
or
subharmonics
that
are
within
5
dB
of
the
specication
are
subsequen
tly
v
eried
with
a
more
accurate
pro
cedure.
1.
T
urn
on
the
equipment
shown
in
Figure
2-9
and
Figure
2-10
.
Preset
the
instrumen
ts
and
let
them
w
arm
up
for
at
least
one
hour.
On
the
HP
8566B,
connect
the
CAL
OUTPUT
to
the
RF INPUT.
Press
4
SHIFT
5
4
W
5
to
calibrate
the
sp
ectrum
analyzer.
Figure 2-9. Spurious Signals (Harmonic) T
est Setup
< 20 GHz
2-40 Performance Tests
Spurious Signals (Harmonics Subharmonics)
HP 8360
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Agilent Technologies 83620A Specifications

General

Brand	Agilent Technologies
Model	83620A
Category	Blower
Language	English