21.
Maximum FM
Deviation
(F
or
B-Series
Only)
Description
and
Procedure
In
this
pro
cedure,
the
syn
thesizer's
RF
output
is
monitored
directly
on
a
spectrum
analyzer
for
lo
w
FM
rates.
The FM
amplitude is
increased un
til the
maxim
um
deviation
exceeds
the
specication.
F
or higher
FM
rates,
the
FM
rate
is
set
so
that
a
Bessel
n
ull
o
ccurs
when
the
RF p
eak
deviation
equals
the
sp
ecication.
The
mo
dulation
amplitude
is
increased
in order
to pass
through
the
correct
Bessel
null
for the
FM rate
used
and
the
p
eak
deviation
sp
ecied.
1.
Connect
the
equipmen
t
as
sho
wn
in
Figure
2-30
.
Preset
all
the
instrumen
ts
and
let
them
w
arm
up
for
at
least
one
hour.
Figure
2-30.
Maximum
FM
Deviation
T
est
Setup
Equipment
Spectrum Analyzer
HP/Agilent 8566B
Function Generator
HP/Agilent 3325A
Function Generator
HP/Agilent 8111A or HP/Agilen
t 8116A
DC FM (
100 Hz) (Using HP/Agilent 8111A or HP/Agilent 8116A)
Note
Synthesizer mo dels without 1 GHz
capability should use 5 GHz settings
instead of 1 GHz, as indicated in parenthesis.
2. On the synthesizer, press:
4
CW
54
1
54
GHz
5
(5 GHz)
2-100 Performance Tests
Maximum FM Deviation
Agilent 8360
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