Rohde & Schwarz ZPV - Parameter Measurement

I
a) absolute
linear
ratio,
dimensionless,
by
pressing
button LTN.
21
b)
linear
ratio,
relative to
a
reference
ratio,
dimensionless,
by
pressing
button
LIN. /REP.
22.
c)
absolute
logarithmic ratio
in dB
by
pressing
button LOG.
3
d)
logarithmic ratio
in
dB,
relative to
a
reference
ratio, by
pressing
button LOG.
/REF. 24.
The
reference value is
the
voltage
ratio at
which
button
LEVEL REF.
STORE
9
is
pressed. The
phase
reference
is the
measured
value at
which button
f
,
T
REF. STORE
1_1
is pressed.
For defining
reference
ratio and
reference
phase
at
the
same time
press
button
PARAM. CAL.
10.
For the basic
setting
the
reference
ratio is
1/1
and the
phase
reference 0 .
2
.3-3
Parameter
Measurement
(using
Option ZPV-B2)
2.3.3..1
Reflection
Factor
Measurement (s^
,
s^p,
a^,
VSWR)
By
pressing
button
Sll,
S22
32
,
the
voltages in
channel
A and
in channel
B
and
the
phase
angle between
channels A and B,
referred
to
channel
A, are
measured.
Depending on
the plug-in used
and the
test setup,
the
button
DIR.
COUPL.
3
! should
be pressed
(see also
manual of
the
corresponding
plug-in).
Depending on the
connection
of the test
item,
the
result is, in
linear
display (LIN.
21
pressed),
either the input
reflection
factor
s^
^
or the
output reflection
factor s
. The
magnitude
and
phase (r,
f
15
pressed)
or the real
and
imaginary components (X, Y
YJ_
pressed)
of
these
reflection
factors
can also be output.
If
logarithmic display is
selected by
pressing
button
LOG.
23,
the
output
is the reflection attenuation
a of
the
test
item in
dB and
the
phase
angle
r
associated with the
reflection factor.
When
pressing
button
LIN. /REF.
22,
the
VSWR
of the test
item and the phase
angle associated
with the
reflection
factor are output.
For calibrating the test
setup with
directional
couplers
and
VSWR bridges,
a shortcireuit
has
to
be
established in
the test
plane
and button
PARAM.
CAL.
10
pressed. In
all other cases the
test output
should
be
match-
terminated
and button PARAM. CAL.
10
pressed.
R
36737
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12