4263B
Using
a
Guard
Plate
for
Low
Capacitance
Measurements
Use
a
guard
plate
to
minimize
measurement
errors
caused
by
stray
capacitance
when
measuring
low
capacitance
values
,
such
as
chip
capacitors
.
See
Figure
7-10.
Figure
7-10.
Example
of
DUT
Guard
Plate
Connection
Shielding
Shielding
minimizes
the
eects
of
electrical
noise
picked
up
by
the
test
leads
.
So
,
provide
a
shield
plate
and
connect
it
to
the
outer
shield
conductors
of
the
four-terminal
pair
test
leads
as
shown
in
Figure
7-11.
Figure
7-11.
Guard
Shield
7-10
Impedance
Measurement
Basics
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Summary of Contents for 4263B
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