GUI reference
R&S
®
ZNB/ZNBT
457User Manual 1173.9163.02 ─ 62
If switch matrices are involved, a sweep is performed for every possible signal path
and for each of these paths a separate S-parameter trace is shown (see Chap-
ter 4.7.29.5, "Multiple paths and calibration", on page 275).
Figure 5-17: Multiple traces due to multiple paths
The purpose of the typical result traces "Trc1"" and "Trc2" is to avoid connection errors
and to track hardware problems: if the correct standard type is measured, and every-
thing is properly connected, then the measured traces are expected to be similar to the
typical trace.
The S-Parameter traces are labeled P[j_i]_<standard type> Sij, where j indicates the
input (test) port and i indicates the output port, e.g. P[1_2]_Unknown_Through S21.
If switch matrices are involved, the label also indicates:
●
which VNA port b is switched to the input port j and
●
which VNA port a is switched to the output port i
Instead of a single Sij trace we have multiple traces Sijvativbtj. E.g., "S21v1t1v2t2"
means that S21 is measured with VNA port 1 connected to the input port and VNA port
2 connected to the output port.
Start Cal Sweep / Abort Sweep
Starts the calibration sweep for the related port assignment or aborts it.
Remote command:
[SENSe<Ch>:]CORRection:COLLect:AUTO:ASSignment<Asg>:ACQuire
Detect Ports & Start Cal
Performs the "Detect Port Assignment" and "Start Cal Sweep" functions, one after the
other.
Detect Port Assignment
Starts a procedure by which the R&S ZNB/ZNBT (with a little help from the attached
calibration unit) auto-detects the connected ports. The automatic assignment replaces
the configured one.
In case auto-detection fails
●
an error report is shown as a warning dialog
●
the undetected port connections are marked with warning signs
●
the calibration can be invalid
Cal softtool
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