HP 8753D Option 011 User Manual

FN L
Oat
A12 Check
1.
Use
an
oscilloscop
e
to
observ
e
the FN
LO from
A14 at
the cable
end of
A14J2. Press
4
PRESET
5
4
SYSTEM
5
NN
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N
N
N
N
SERVICE
MENU
NN
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SERVICE
MODES
NN
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N
FRACN
TUNE
ON
to
switc
h
on
the
fractional-N
service mo
de.
2.
Use the
front
panel knob
to v
ary the
frequency from
30 to
60
MHz.
The
signal
should
appear
similar to
Figure
7-11
.
The
displa
y
will
indicate
10
to
60.8
MHz.
a.
If
the
FN
LO
signal
is
go
o
d,
the
A12
assembly
is fault
y.
b.
If
the
FN LO
signal is
not go
od,
skip
ahead
to
\A13/A14
F
ractional-N
Chec
k."
Figure
LO
W
A
VE7
here.
Figure
7-11.
Typical
FN
L
O
W
a
v
eform
at
A12J1
DRAFT
3/21/106 15:13
Source Troubleshooting 7-17
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HP 8753D Option 011 Specifications

General

Brand	HP
Model	8753D Option 011
Category	Measuring Instruments
Language	English