Agilent Technologies 4395A - Page 166

Selecting
the
Measurement
Format
(NA,ZA Mode)
Convert T
o Selected
Port
Softkey
Impedance
A/R,
S11,
S12
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
Z:Refl
B/R, S21,
S22
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
Z:Trans
A
dmittance A/R,
S11, S12
N
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
Y:Refl
B/R,
S21,
S22
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
Y:Trans
The
marker
readout
value is
a linear
impedance or
admittance value
even
if
the
LOG
MA
G
format
is
selected.
T
o
Display
Phase
beyond
6
180
Degrees
(NA,
ZA
Mode)
By
default,
the
4395A
wraps
the
trace
around
at
6
180
degree
phases
.
However,
there are
occasions
when
it
is
more
convenient
to
display
the
trace
without
6
180
degree
wrap-around. If
this
is
the
case
,
you
can
use
the
Expanded
Phase
F
ormat
,
which displays
phases beyond
6 180
degrees
as
shown
in
Figure
10-6
.
T
o
select
the
expanded
phase
format,
follow
these
steps:
1.
Press
4
Fo
rmat
5
.
2.
T
oggle
N
N
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
N
N
N
N
N
N
N
N
NN
EXP
PHASE
on
OFF
to
N
N
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
ON
off
.
Figure
6-4. Expanded Phase F
ormat
Using the Complex Plane F
ormat (ZA Mode)
Displaying R-X in the Complex Plane
1.
Press 4
Meas
5 and choose
N
NNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNN
IMPEDANCE: MAG(|Z|)
.
2.
Press 4
Format
5 and choose
NNNN
NNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNN
COMPLEX PLANE to select the complex plane format.
3.
Press 4
Scale Ref
5 and choose
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
AUTO SCALE to adjust the scale.
In the complex plane, the measurement parameter is always a complex number even if you
select a scalar parameter (such as j Z j ).
6-12 Setting and Optimizing Measurement Conditions