HP 8753D Option 011

PLREF W
av
eforms
REF
Signal A
t A11TP1
Pin 9.
REF is
the
buered
PLREF+
signal.
The
1st
IF
is
phase
lo
c
ked
to
this
signal.
Use
an
oscilloscop
e
to
observ
e
the
signal at
the frequencies
noted in
Figure 7-9
and Figure
7-10.
High
Band REF
Signal. In
high band
the REF
signal is
a
constan
t
1
MHz
square
w
a
v
e
as
indicated
b
y
Figure
7-9
.
Figure
HBSIG7
here.
Figure
7-9.
High
Band REF
Signal
(

16
MHz
CW)
DRAFT
3/21/106 15:13
Source Troubleshooting 7-15
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