17.
On
the
syn
thesizer,
press:
4
MOD
5
NNNNNNNNNNNNNNNNNNNNNNN
FM
Menu
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
FM
On/Off
Int
(asterisk
on)
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Internal
FM
Rate
4
1
5
4
MHz
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Internal
FM
Dev
4
2.404
5
4
MHz
5
18.
Adjust
the
in
ternal
FM
deviation
on
the
syn
thesizer
to
minimize
the
amplitude
of
the
carrier
on
the
sp ectrum
analyzer.
19.
Calculate
the
p ercentage
of
error
as
follows:
Error
(%)
=
[(2.404
MHz
0
New
FM
Deviation)/2.404
MHz]
x
100.
20.
Record
the
error
in
T
able
2-27.
21.
T
urn
o
the
in
ternal
FM
mo
dulation.
Select:
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
FM
On/Off
Int
(asterisk
o
)
22.
Repeat
steps
15
through
21
at
the
syn
thesizer
(and
sp ectrum
analyzer)
frequencies
in
T
able
2-27.
23.
Record
the
w
orst
case
\In
ternal
FM
Error"
(from
T
able
2-27 )
on
the
test
record.
Related
Adjustments
FM
Gain
Mo
dulation
Generator
(Option
002)
Mo
dulation
Generator
Flatness
(Option
002)
In
case
of
Difficulty
Refer
to
the
T
r
oublesho
oting
man
ual.
HP
8360
P
erformance
T
ests
FM
Accuracy
2-117
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