R&S
®
ZVA/ZVB/ZVT Trace Menu
1145.1084.12 4.17 E-6
b2/a1 Src Port 1, b1/a1 Src Port 1, b2/b1 Src Port 1, b1/b2 Src Port 1
Select predefined complex ratios of the standard 2-port wave quantities a
1
, a
2
, b
1
, and b
2
:
The predefined wave quantities are all obtained with the same test set configuration, port 1 providing
the stimulus signal (source port 1, forward measurement if the stimulus signal is fed to the input of the
DUT).
• b2/a1 Src Port 1 is the ratio of the wave quantities b
2
and a
1
and corresponds to the S-
parameter S
2
1
(forward transmission coefficient).
• b1/a1 Src Port 1 is the ratio of the wave quantities b
1
and a
1
, measured at PORT 1, and
corresponds to the S-parameter S
1
1
(input reflection coefficient).
• b2/b1 Src Port 1 is the ratio of the transmitted to the reflected wave quantities in a forward
measurement.
• b1/b2 Src Port 1 is the inverse of b2/a1 Src Port 1.
The analyzer can also measure arbitrary ratios for other source ports; see More Ratios.
Remote
control:
CALCulate<Ch>:PARameter:MEASure "<Trace_Name>", "B2/A1" | ...
[SENSe<Ch/Tr>:]FUNCtion[:ON] "...POWer:RATIO B2, A1" etc.
Create new trace and select name and measurement parameter:
CALCulate<Ch>:PARameter:SDEFine "<Trace_Name>", "B2/A1" | ...
More Ratios
Opens a dialog to select arbitrary ratios of wave quantities, e.g. for different different detectors and
source ports or more than 2 ports. .
The notation for ratios and the functionality of the More Ratios dialog is analogous to the definition of S-
parameters.
• Numerator selects the type (left pull-down list) and the port number assignment (right pull-down
To Next Page
Loading...
