4263B
P
erforming
the
OPEN
Correction
Before
connecting
the
Device
Under
T
est
(DUT)
to
the
test xture
,it
is necessary
to remove
residual
errors
of
the
xture
by
performing the
error correction
function.
The
OPEN
correction
is
for
canceling
the stray
admittance in
parallel with
the DUT
.T
o perform
the
OPEN
correction,
1.
Conrm
that
nothing
is
connected
to
the
test
xture
.
2.
Press
.
The
OPEN
correction
menu
is
displayed.
3.
Select
OpenMeas
using
or ,
and
press
.
The
OPEN
correction
is
performed
with
the
following
message
.
After
a
while
,
the
4263B
completes
OPEN
correction
with
the
message
Open
Correction
Complete
.
If
you
select
MeasVal
in
the
OPEN
correction
menu,
the
4263B
displays
the
OPEN
admittance
measurement
value
(OPEN
correction
data).
1.
Select
MeasVal
and
press
.
The
4263B
displays
the
primary
parameter
G.
2.
Press
The
4263B
displays
the
secondary
parameter
B
.
3.
Press
to
return
to the
OPEN correction
menu.
The following warning message
is displayed when the OPEN admittance
j
Yo
j
is not
less than 100

S
and is unsuitable for the OPEN correction data.
Even if this warning message is displayed, the OPEN correction data will be used. However,it
would be better to verify that there is no error in the connection between the test xture and
the UNKNOWN terminal, and in the OPEN correction procedure.
1-24 Getting Started