Command Reference
R&S
®
ZNL/ZNLE
889
User Manual 1178.5966.02 ─ 07
●
A balanced port configuration generally introduces a new set of mixed mode mea-
sured quantities. Therefore the traces must be redefined when a balanced port is
created. To avoid any inconsistencies the analyzer deletes all traces when
SOURce<Ch>:LPORt<LogPt>
is used.
●
It is essential to complete the logical port assignment before defining other port
properties such as common or differential mode impedances: whenever a logical
port is created using
SOURce<Ch>:LPORt<LogPt>
, the parameters of all existing
logical ports are reset.
Suffix:
<Ch>
.
Channel number.
<LogPt>
Identifying number of the newly created balanced or single-
ended logical port.
Must be between 1 and the number of physical ports (see
). If unspecified the numeric suf-
fix is set to 1.
Parameters:
<PhysicalPort>
Number of first/only physical port
Range:
1 to number of physical ports
<PhysicalPort>
Number of second physical port (optional), forming a balanced
port with the first physical port.
The port numbers must be different. Moreover, a physical port
cannot be assigned to several logical ports.
Range:
1 to number of physical ports
Example:
*RST; :SOUR:LPOR1 1,2
Combine the physical ports 1 and 2 to the logical port 1 (bal-
anced)
SOUR:LPOR1?
Query the physical ports assigned to logical port no. 1. The
response is
1,2
.
Manual operation:
SOURce<Ch>:LPORt<LogPt>:CLEar
[<Scope>]
Dissolves balanced port
<LogPt>
or all logical ports.
Suffix:
<Ch>
.
Channel number
<LogPt>
Logical port number used to number balanced ports.
Range according to the current port configuration
(
). If an undefined balanced port
number is used, the analyzer generates an error message.
Exception: Parameter
ALL
, see below.
VNA Command Reference
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