GUI reference
R&S
®
ZNB/ZNBT
457
User 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
ter 4.7.29.5, "Multiple paths and calibration"
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> S
ij
, 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 S
ij
trace we have multiple traces S
ij
v
a
t
i
v
b
t
j
. 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
