Agilent Technologies 4263B - Contact Resistance; Extending Test Leads; Contact Configuration; Measurement Contacts for Test Lead Extension

4263B
Contact
Resistance
Contact
resistance
between
the
contacting
terminals
and
the
DUT
causes
measurement error
when
measuring
large
values
of
capacitance
, especially
in D
(dissipation factor)
measurements.
When
measuring
large
capacitance
values
,
the four-terminal
measurement contacts
have the
advantage
of
less
measurement
error
as
compared to
the two
terminal method.
Select a
test
xture
which
can
hold
the
DUT
tight
to
stabilize
the
connection and
to give
the lowest
contact
resistance
.
Figure
7-8.
Contact
Conguration
Extending
T
est
Leads
If
you
need
to
extend
your
test
leads
and
measurement
contact
cannot
be
made
using
the
four-terminal
pair
conguration,
use
the
connection
shown
in
Figure
7-9
.
Figure 7-9. Measurement Contacts for Test Lead Extension
Impedance Measurement Basics 7-9