Agilent Technologies 4395A - Page 117

Impedance
Analyzer
T
our
Step
4:
Connecting
and
Setting
Up
a
T
est
Fixture
Connecting
the xture
This
tour does
not
assume
any
specic
test
xture
.
Y
ou
can
use
atest
xture of
your choice
.
F
or how
to
connect
your
test
xture
to
the
impedance
test
kit,
refer
to the
documentation that
comes
with
the
test
xture
.
A
typical
test
xture
can
be
installed
in
such
a
procedure
as
shown
below:
1.
Turn
the
OUTPUT
port
APC-7
connector
of
the
impedance
test
kit.
2.
Make
sure
that
the
connecting
sleeve
is
completely
retracted.
3.
Set
the
test
station's
mount
post
to
the
pair
of
holes
located
at
one corner
of the
test xture
.
4.
Turn
the
xing
ring
counterclockwise
until
it
is
fully
tightened.
5.
Connect
the
impedance
test
kit's
OUTPUT
port
to
the
connector
located
on the
back side
of
the
test
xture
.
Figure 3-7.
Connecting the
test xture
Setting
the
Electrical
Length
Connecting a test xture adds an extra electrical length to the test circuit. This electrical
length, which is specic to the test xture you use
, must be known to the 4395A so that
it can
compensate for the extra electrical length and eliminate errors due to phase shifts
.
The 4395A incorporates a database of Agilent test xtures with their own electrical lengths
.
For example
,ifthe
model number of your test xture is 16192, you would set the electrical
length as follows:
Quick Start Guide 3-45