HP 8753D - Page 329

Figure
6-44.
Isolation
E
XF
Thus
there are
two
sets
of
error
terms
,
forward
and
reverse
,
with
each
set
consisting
of
six
error
terms
,
as
follows:
Directivity
,
E
DF
(forward)
and
E
DR
(reverse)
Isolation,
E
XF
and
E
XR
Source
Match,
E
SF
and
E
SR
Load
Match,
E
LF
and
E
LR
Transmission
Tracking,
E
TF
and
E
TR
Reection
Tracking,
E
RF
and
E
RR
The
analyzer's
test
set
can
measure
both
the
forward and
reverse characteristics
of the
test
device
without
you
having
to
manually
remove
and
physically reverse
the device
.The
full
two-port
error
model
illustrated
in
Figure
6-45
depicts
how
the
analyzer eectively
removes
both
the
forward and
reverse error
terms for
transmission
and
reection
measurements
.
6-62 Application and Operation Concepts