9.
Spurious Signals
(Non-Harmonic)
Description
and Procedure
Use this
pro cedure
to measure
known,
xed, oset
spurs
that
are
generated
in
the
frequency
syn
thesis
section
of
the
syn
thesizer.
The
syn
thesizer
is
set
to
v
arious
CW
frequencies where
these
spurious
signals
will most
likely
o ccur.
Then the
sp
ectrum
analyzer
is
tuned
to
the
spur
frequencies to
measure
their
lev
els.
1.
Preset
the
instrumen
ts
sho
wn
in
Figure
2-11
and let
them w
arm up
for at
least
one
hour.
On
the
HP/Agilen
t
8566B,
connect
the
CAL
OUTPUT
to the
RF INPUT.
Press
4
SHIFT
5
4
W
5
to
calibrate the
spectrum
analyzer.
Figure
2-11.
Spurious
Signals
(Non-Harmonic)
T
est
Setup
Equipment
Sp
ectrum
Analyzer
HP/Agilent
8566B
2.
T
o
ac
hiev
e
p
eak
p
ow
er, turn
on RF
p
eaking.
Set:
4
USER CAL
5
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
Tracking
Menu
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
Peak
RF
Always
(asterisk
on)
3.
Connect
the
equipmen
t
as
sho
wn
in
Figure
2-11.
Fixed
Spurious
Signals
4. On the syn
thesizer, press:
4
CW
54
19.765
54
GHz
5
4
POWER LEVEL
5
Set the maximum specied lev
eled po
wer.
5. On the spectrum analyzer, set:
Center Frequency:
19.765 GHz
Frequency Span: 500 kHz
Reference Level: 10 dBm
Scale Log: 5 dB/Division
Resolution Bandwidth: Auto
Sweep Time: Auto
Marker: Set to 19.765 GHz
Agilent 8360 Performance Tests
Spurious Signals (Non-Harmonic)
2-41