Command Reference
R&S
®
ZNB/ZNBT
1257User Manual 1173.9163.02 ─ 54
SOURce<Ch>:LPORt<LogPt> <PhysicalPort>[, <PhysicalPort>]
Assigns the logical port number <LogPt> either to the single-ended physical port
<PhysicalPort1> or to a pair of physical ports <PhysicalPort1>,<PhysicalPort2>, at the
same time defining them as balanced port.
Important:
●
All required logical ports (balanced and single ended) must be created explicitly.
●
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.
●
For the R&S ZNB, 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. For the R&S ZNBT this is not the
case.
●
For the R&S ZNBT a balanced port can only be created from ports in the same port
group.
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
INSTrument:TPORt:COUNt?). 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
SCPI Command Reference
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