Agilent Technologies 4395A - System Overview

System
Overview
System Overview
The
4395A
has
three
analyzer modes;
network ,
spectrum ,
and impedance
(available with
option
010).
In
network
analyzer
mode
,the
4395A measures
the reection
and transmission
characteristics
of
devices
and
networks
by
applying
a
known
swept signal
and measuring
the response
of
the
test
device
.
The
signal transmitted
through the
device or
reected from
its
input
is
compared
with
the
incident
signal
generated by
a swept
RF source
.The
signals
are
applied
to
a
receiver
for
measurement,
signal
processing,
and display
.The
network analyzer
system consists
of
a
source
,
signal
separation
devices,
a receiver
,and
a display
.
In
spectrum
analyzer
mode
,the
4395A measures
the amplitude
and frequency
of
a
signal
spectral line
by sweeping
the tuning
frequency of
the
receiver
.
The
test
signal
is
applied
to
a
receiver
through
an input
attenuator.
The spectrum
analyzer
consists
of
an
input
attenuator
,
a
receiver
,
and a
display.
Impedance
analyzer
mode is
available with
option 010,
and
requires
the
43961A
RF
impedance
test
kit
as
well.
In impedance
analyzer mode
,
the
4395A
applies
test
signals
to
the
DUT
through
the
impedance
test
kit,
and determines
the
impedance
characteristics
of
the
DUT
by
a
method
called
the
I-V
analysis
method,
that is
,
by
measuring
the
voltage
(V)
and
current
across
the
DUT
.
The
4395A
's
impedance
analyzer
system
consists
of
a
signal
source
,a
test kit
(the
43961A
RF
impedance
test
kit),
a
receiver
,
and
a
data
display
device
.
Figure
A
-1
is
a
schematic
block
diagram
that briey
illustrates the
4395A
's
principle
of
operation.
F
or
more
information,
refer
to
Service
Manual (English)
(Agilent part
number:
04395-90100),
which
describes
the
4395A
's
principle
of
operation in
greater detail
with
a
complete
block
diagram.
Figure A
-1. Schematic block diagram
A-2 Basic Measurement Theory