Agilent Technologies 4263B - Standard for the LOAD Correction; Using a Standard Supplied by a Component Manufacturer; Using Your Own Standard; Selecting the LOAD Standard

4263B
Standard
for
the
LO
AD
Correction
Y
ou
need
a
standard
to
do
the
LO
AD
correction. This
can be
any standard
which has
specied
reference
values
.
The
type
of
standard does
not have
to be
same as
the device
to be
measured.
That
is
,
a
capacitor
standard can
be used
when you
want to
measure inductors
.
Using
a
Standard
Supplied
by
a
Component
Manufacturer
Use
the
manufacturer
specied
values
of
the standard
as the
reference values
for the
LO
AD
correction.
Using
Y
our
Own
Standard
If
you
do
not
have
a
standard with
specied reference
values,
you can
use
a
device
such
as
a
general
purpose
capacitor
or resistor
.T
ouse
such
a
device
,
it
is
necessary
to
measure
its
impedance
value
accuratelly
.
The measured
impedance value
is used
as
the
reference
value
for
the
LO
AD
correction.
Selecting
the
LO
AD
standard.
The
criteria for
selecting the
LO
AD
standard
is
as
follows:
When
measuring
DUT
s
of
various
impedance
values
,
it
is
recommended to
use
a
100

to
1
k
device
as
the
LO
AD
standard.
It
can
be measured
accurately
by
LCR
meters
.
When
measuring
a
DUT
of
one
impedance
value
,
it
is
recommended
that
the
LO
AD
standard
have
a
impedance
value
close
to
that
of
the
DUT
.
It
is
important
to
use
the
stable
LO
AD
standard
not
susceptable
to
inuences
of
environment
such
as
temperature
or
magnetic
elds
.
From
this
viewpoit,
capacitors
or
resistors are
better
suited
than
inductors
.
Measuring
the
LO
AD
reference
value
.
Use
the
following
procedure
to
measure
the
LO
AD
standard's
value
accurately
.
1.
Connect
the
Agilent
direct-connect
test
xture
(such
as 16047A)
to
a
high
accuracy
LCR
meter
,
and
perform
the
OPEN/SHORT
correction.
2.
Set
the
test
frequency
.
It
should
be same
as the
frequency
for
measuring
the
DUT
.
3.
Set
the
LCR
meter's
measurement
conditions (such
as integration
time or
averaging time)
so
that
it
can
measure
as
accurately
as
possible
.
4. Connect
the LO
AD standard
to
the
test
xture
,
and
measure
its
impedance
value
.
This measurement
value is
used as
aLO
AD
reference
value
.
7-14 Impedance Measurement Basics