11.
Connect a
load to
PORT 2,
and press:
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
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
N
REV
ISOL'N
ISOL'N
STD
12. Connect
the load
to PORT
1, and
press:
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
FWD
ISOL'N
ISOL'N
STD
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
ISOLATION
DONE
13. Y
ou
may
repeat
any
of
the
steps
above
.
There
is
no
requirement
to
go
in
the
order
of
steps.
When
the
analyzer
detects
that
you
have
made
all
the
necessary
measurements
,
the
message
line will
show
PRESS
'DONE' IF
FINISHED
WITH
CAL
.
Press
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
DONE
TRL/LRM
.
The
message
COMPUTING
CAL
COEFFICIENTS
will
appear
, indicating
that the
analyzer is
performing
the
numerical
calculations
of
error
coecients
.
Note
Y
ou can
save
or
store
the
measurement
correction
to
use
for
later
measurements
.
Refer
to
the
\Printing,
Plotting,
and
Saving
Measurement
Results"
chapter
for
procedures
.
14.
Connect
the
device under
test. The
device S-parameters
are
now
being
measured.
TRM
Error-Correction
1.
Y
ou
must
have
a
TRM
calibration
kit
dened
and
saved
in
the
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
N
N
USER
KIT
,
as
shown
in
\Modifying
Calibration
Kit
Standards
,"
located
later
in
this section.
Note
This
must
be
done
before
performing
the
following
sequence
.
2.
Press
4
CAL
5
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
CAL
KIT
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
SELECT
CAL
KIT
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
USER
KIT
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
RETURN
N
N
N
N
N
N
N
N
NN
NN
N
N
N
N
N
N
N
N
RETURN
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
CALIBRATE
MENU
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
N
N
N
N
N
N
N
TRL*/LRM* 2-PORT
.
3.
T
o
measure
the
\TRM
THRU
,"
connect
the
\zero
length" transmission
line between
the two
test
ports
.
4.
T
o
make the
necessary four
measurements,
press:
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
THRU TRMTHRU
5. T
o measure the \TRM SHORT
," connect the
short to PORT 1, and press:
NNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
N
S11 REFL: TRMSHORT
6. Connect the short to PORT 2, and press:
NNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNN
S22 REFL:
TRMSHORT
Note
If loads can be connected to both port 1 and port 2 simultaneously
,
then the following TRM load measurement can be performed using the
N
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
DO BOTH FWD + REV
softkey.
7. To measure the \TRM LOAD," disconnect the short and connect the TRM load to PORT1.
Refer to \Choosing Calibration Load Standards."
5-24 Optimizing Measurement Results
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