Rohde & Schwarz R&S ZNB - Page 275

GUI Reference
R&S
®
ZNB/ZNBT
275User Manual 1173.9163.02 ─ 53
Y- and Z-parameters are expressed as Y/Z
<out>< in>
, where <out> and <in> denote the
output and input port numbers of the DUT.
Remote command:
CALCulate<Ch>:PARameter:MEASure "<Trace_Name>", "Y11" |
"Z11" ...
CALCulate<Ch>:PARameter:SDEFine "<Trace_Name>", "Y11" |
"Z11" ...
Y11/Y12 /Y21/Y22
Selects one of the 2-port Chapter 5.3.4.2, "Y-Parameters", on page 124 as a measured
quantity for the active trace. The Y-parameters describe the admittances of a DUT with
output ports terminated in a short circuit (V = 0).
The four 2-port Y-parameters can be interpreted as follows:
●
Y
11
is the input admittance, defined as the ratio of the current I
1
to the voltage V
1
,
measured at port 1 (forward measurement with output terminated in a short circuit,
V
2
= 0).
●
Y
21
is the forward transfer admittance, defined as the ratio of the current I
2
to the
voltage V
1
(forward measurement with output terminated in a short circuit, V
2
= 0).
●
Y
12
is the reverse transfer admittance, defined as the ratio of the current I
1
to the
voltage V
2
(reverse measurement with input terminated in a short circuit, V
1
= 0).
●
Y
22
is the output admittance, defined as the ratio of the current I
2
to the voltage V
2
,
measured at port 2 (reverse measurement with input terminated in a short circuit,
V
1
= 0).
Remote command:
CALCulate<Ch>:PARameter:MEASure "<Trace_Name>", "Y11" | "Y12" |
"Y21" | "Y22"
CALCulate<Ch>:PARameter:SDEFine "<Trace_Name>", "Y11" | "Y12" |
"Y21" | "Y22"
Z11 / Z12 / Z21 / Z22
Selects one of the 2-port Chapter 5.3.3.2, "Z-Parameters", on page 123 as a measured
quantity for the active trace. The Z-parameters describe the impedances of a DUT with
open output ports (I = 0).
The four 2-port Z-parameters can be interpreted as follows:
●
Z
11
is the input impedance, defined as the ratio of the voltage V
1
to the current I
1
,
measured at port 1 (forward measurement with open output, I
2
= 0).
●
Z
21
is the forward transfer impedance, defined as the ratio of the voltage V
2
to the
current I
1
(forward measurement with open output, I
2
= 0).
●
Z
12
is the reverse transfer impedance, defined as the ratio of the voltage V
1
to the
current I
2
(reverse measurement with open input, I
1
= 0).
●
Z
22
is the output impedance, defined as the ratio of the voltage V
2
to the current I
2
,
measured at port 2 (reverse measurement with open input, I
1
= 0).
Meas Softtool