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R&S
ZNB/ZNBT
The predefined wave quantities can all be obtained with the same test setup, where a
2-port DUT is connected between the analyzer ports 1 and 2. The stimulus signal is
provided by the analyzer port 1 or 2 ("Source Port").
The predefined wave quantities correspond to the 2-port S-parameters:
●
"b1/a1 Source Port 1" is the ratio of the wave quantities b
port 1. This ratio corresponds to the S-parameter S
●
"b2/a1 Source Port 1" is the ratio of the wave quantities b
to the S-parameter S
●
"b2/a2 Source Port 2" is the ratio of the wave quantities b
port 2. This ratio corresponds to the S-parameter S
●
"b1/a2 Source Port 2" is the ratio of the wave quantities b
to the S-parameter S
The analyzer can also measure arbitrary ratios for other source ports; see
ter 5.2.2.2, "More Ratios
Tip: In the trace list, the source port is indicated in brackets. "b2/a1(P1)" denotes the
ratio b
Remote command:
CALCulate<Ch>:PARameter:MEASure "<Trace_Name>", "B2/A1" | ...
CALCulate<Ch>:PARameter:SDEFine "<Trace_Name>", "B2/A1" | ...
5.2.2.2
More Ratios dialog
The More Ratios dialog allows you to select arbitrary ratios between wave quantities b
a
as measured quantity. The ratios can be calculated with arbitrary source port and dif-
j
ferent detector settings.
Access: Trace – [Meas] > "Ratios" > "More Ratios..."
Background information
Refer to the following sections:
●
Chapter 4.3.5.1, "Wave
●
Chapter 4.3.5.2,
User Manual 1173.9163.02 ─ 62
(forward transmission coefficient).
21
(reverse transmission coefficient).
12
dialog",
/a
with source port 1.
2
1
quantities",
"Ratios",
on page 295.
on page 135
on page 136
GUI reference
Meas softtool
and a
, measured at
1
1
(input reflection coefficient).
11
and a
and corresponds
2
1
and a
, measured at
2
2
(output reflection coefficient).
22
and a
and corresponds
1
2
Chap-
,
i
295
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