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1
General
Information
INTRODUCTION
This
Servic
e
Manual
is
a
guide
to
servicing
the
4395A
Net
w
ork/Sp ectrum/Imp edance
Analyzer.
This
man
ual
pro
vides
information
ab out
p erformance
test,
adjustmen
t,
troublesho
oting
and
repairing
the
analyzer.
ORGANIZA
TION
OF
SERVICE
MANUAL
This
man
ual
consists
of
ma
jor
c
hapters
listed
b elow.
The
c
hapters
are
divided
b
y
tabs.
This
section
describ es
the
names
of
the
tabs
and
the
con
ten
t
of
eac
h
c
hapter.
Perfomanc
e
T
est
pro
vides
the
pro cedures
required
for
p erformance
test
of
the
analyzer.
Calculation
She
et
pro
vides
a
calculation
sheet
for
those
p erfomance
tests
that
require
additional
calculation
to
determine
the
nal
test
results.
Performanc
e
T
est
R
e
c
or
d
pro
vides
a
p erformance
test
record.
The
record
sheets
pro
vides
for
all
test
items.
A
djustments
pro
vides
pro cedures
for
adjusting
the
analyzer
after
repair
or
replacemen
t
of
an
assem
bly
.
Some
of
the
adjustmen
ts
up dates
correction
constan
ts
stored
in
to
the
Flash
R
OM
on
the
A1
CPU
b oard.
The
correction
constan
ts
is
up dated
b
y
using
the
adjustmen
t
program
(PN
04395-18004).
Note
The
next
four,
four
c
hapters
are
the
core
troublesho
oting
c
hapters.
T
r
oublesho
oting.
The
troublesho
oting
strategy
is
to
systematically
v
erify
p ortions
of
the
analyzer,
and
th
us
narrow
do
wn
the
cause
of
a
problem
to
the
defectiv
e
assem
bly
.
This
c
hapter
is
the
rst
of
a
series
of
troublesho
oting
pro cedures.
It
c
hec
ks
the
op eration
of
the
analyzer
indep enden
t
of
system
p eripherals,
and
suggests
ho
w
to
remedy
system
problems.
Power
Supply
T
r
oublesho
oting
Digital
Contr
ol
T
r
oublesho
oting
A
c
c
essories
T
r
oublesho
oting
Eac
h
of
the
v
e
functional
group
c
hapters
ab o
v
e
v
eries
its
constituen
t
assem
blies
un
til
the
faulty
assem
bly
is
iden
tied.
A
c
c
essories
T
r
oublesho
oting
v
eries
external
RF
cables
and
calibration
kit
devices.
A
c
c
essories
T
r
oublesho
oting
is
the
last
of
the
gray-tabb ed
troublesho
oting
c
hapters.
General
Information
1-1
Summary of Contents for 4395A
Page 10: ......
Page 26: ......
Page 34: ......
Page 77: ...Figure 2 17 B R Magnitude Ratio Phase Dynamic Accuracy Test Setup 2 Performance Tests 2 43 ...
Page 167: ...Figure 5 1 Adjustment Hardware Setup Adjustments 5 5 ...
Page 186: ...Figure 5 13 Receiver Gain Adjustment Location 5 24 Adjustments ...
Page 190: ...Figure 5 16 Receiver Flatness Adjustment Setup 1 MHz 5 28 Adjustments ...
Page 194: ...Figure 5 20 DC Bias Adjustment Setup 2 5 32 Adjustments ...
Page 196: ...Figure 6 1 Troubleshooting Organization 6 2 Troubleshooting ...
Page 206: ...Figure 7 1 Power Supply Lines Simplified Block Diagram 7 2 Power Supply Troubleshooting ...
Page 212: ...Figure 7 5 A1 CPU Connector Locations 7 8 Power Supply Troubleshooting ...
Page 220: ...Figure 8 1 Digital Control Group Simplified Block Diagram 8 2 Digital Control Troubleshooting ...
Page 240: ...Figure 10 1 Top View Major Assemblies 10 4 Replaceable Parts ...
Page 292: ...Table A 2 Manual Changes by Firmware Version Version Make Manual Changes A 2 Manual Changes ...
Page 308: ......
Page 311: ...Figure B 1 Power Cable Supplied Power Requirement B 3 ...
Page 312: ......
Page 342: ......