
5.
The
signal
observ
ed
on
an
oscilloscop
e
should
b e
as
solid
as
the
signal
in
Figure
7-4 .
Figure
W
A
VE7
here.
Figure
7-4.
W
a
v
eform
Integrity
in
SRC
Tune
Mode
6.
The
signal
observ
ed
on
the
sp ectrum
analyzer
will
app ear
jittery
as
in
Figure
7-5
(b),
not
solid
as
in
Figure
7-5
(a).
This
is
b ecause
in
SR
C
TUNE
mo
de
the
output
is
not
phase
lo
c
k
ed.
Figure
PLCOMP7
here.
Figure
7-5.
Phase
Lock
ed
Output
Compared
to
Open
Loop
Output
in
SRC
Tune
Mode
7.
Press
4
MENU
5
NNNNNNNNNNNNNNNNN
POWER
to
v
ary
the
p o
w
er
and
c
hec
k
for
corresp onding
lev
el
c
hanges
on
the
test
instrumen
t.
(A
p o
w
er
c
hange
of
20
dB
will
c
hange
the
v
oltage
observ
ed
on
the
oscilloscop
e
b
y
a
factor
of
ten.)
8.
Note
the
results
of
the
frequency
and
p o
w
er
c
hanges:
If
the
frequency
and
p o
w
er
output
c
hanges
are
correct,
skip
ahead
to
\A12
Reference
Chec
k"
lo
cated
in
this
c
hapter.
7-8
Source
Troubleshooting
DRAFT
3/21/106
15:13
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