Calibration
Required
for
the Network
Analyzer Mode
Step
3: Measuring
the Transmission
1.
Connect a
THRU
between
the
test
port
and
the
return
cable
to
the
analyzer (connect
to the
points
at which
the
test
device
is
connected).
2.
Press
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
TRANSMISSION
.
3.
Press
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
FWD.
TRANS.
THRU
.
Then
wait
the
S21
frequency
response
is
measured
and
the
softkey label
is underlined.
4.
Press
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
FWD.
MATCH
THRU
. Then
wait the
S11 load
match is
measured
and
the
softkey
label
is
underlined.
5.
Press
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
TRANS.
DONE
.
The transmission
coecients
are
computed
and
stored.
The
two-port
calibration
menu
is
displayed
(with the
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
TRANSMISSION
softkey underlined).
Step
4:
Measuring
the
Isolation
1.
If correction
for
isolation
is
not
required,
press
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
ISOLATION
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
OMIT ISOLATION
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
ISOLATION
DONE
.
Skip
to
step
5.
2.
If
correction
for
isolation
is
required,
connect
impedance-matched
LO
ADs
to the
test port
and
the
return
port.
3.
Press
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
FWD
ISOL'N
ISOL'N
STD
.
Then
wait
the
S21
isolation
is
measured
and
the
softkey
label
is
underlined.
4.
Press
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
ISOLATION
DONE
.
The
isolation
error
coecients
are stored.
The
two-port
calibration
menu
is
displayed
(with
the
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
ISOLATION
softkey
underlined).
Step
5: Completing
the Calibration
1.
Press
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
DONE
2-PORT
CAL
to
complete
the calibration.
The
error
coecients
are
computed
and
stored. The
correction menu
is displayed
with
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
CORRECTION
ON
off
.
A corrected
trace is
displayed. The
notation
\
C2
"
at
the
left
of
the
screen
indicates
that
2-port error
correction is
ON.
Step
6: P
erforming the
Measurement
1.
Connect the test device in the reverse direction. Then press
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
NN
N
N
N
N
N
N
N
N
N
N
N
PRESS to CONTINUE
.
2.
Reconnect the test device in the forward
direction. Then press
NNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNN
PRESS to CONTINUE
.
Now the error corrected trace is displayed. If you measure the other test
device,press
4
Trigger
5
NNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNN
MEASUREMENT RESTART
. Then perform the procedure of step 6.
Save the calibration data on a oppy disk or memory disk.
For additional information about calibration, see Appendix A.
Calibration 7-9
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