VNA GUI reference
R&S
®
ZNL/ZNLE
356
User Manual 1178.5966.02 ─ 19
The "Define Math..." buttons in the "Complex Data" and "Formatted Data" sections
both open the
, but with different scope:
●
"Complex Data" > "Define Math..." defines mathematical operations on raw com-
plex trace data.
●
"Formatted Data" > "Define Math..." defines mathematical operations onformatted
trace data.
Both can be combined.
Complex Data/Formatted Data
The controls in the "Complex Data" section define math operations on raw complex
trace data, the controls in the "Formatted Data" section define math operations on for-
matted trace data.
"Complex Data" math is available in all firmware versions of all R&S
ZNx vector net-
work analyzers. "Formatted Data" math was added in version 1.30 of the R&S
ZNL/
ZNLE firmware.
Trace Math ← Complex Data/Formatted Data
Activates or deactivates the "Complex Data" and/or "Formatted Data" formula previ-
ously defined using
ter 10.6.4.2, "User Def Math dialog"
Trace math for unformatted and formatted trace data can be active at the same time.
Trace Math ← Complex Data/Formatted Data
Activates the mathematical mode, applying the last active mathematical relation to the
active trace. The trace is replaced by the mathematical trace and Math is displayed in
the trace list while the mathematical mode is active:
"Trace Math" is enabled if the active data trace fulfills the conditions for evaluating the
mathematical relation. E.g., if no "User Defined" mathematical relation is defined, a
memory trace must be coupled to the active data trace, so that the R&S
ZNL/ZNLE
can evaluate one of the relations "Data / <Mem>" or "Data - <Mem>".
Remote command:
CALCulate<Chn>:MATH:STATe
CALCulate<Chn>:MATH:FORMatted:STATe
Data / <Mem>, Data - <Mem> ← Complex Data/Formatted Data
Activates the mathematical mode with the corresponding trace mathematical operation.
The division (subtraction) is calculated on a point-to-point basis: Each measurement
point of the active trace is divided by (subtracted from) the corresponding measure-
ment point of the memory trace. If the memory trace represents the result of a previous
sweep with unchanged settings, the divided (subtracted) curve is typically centered at
1 / 0 dB (0). It shows the variation of the results in subsequent sweeps.
The result of the division is a mathematical trace and replaces the active data trace in
the diagram area. The mathematical trace is updated as the measurement goes on
and the analyzer provides new active trace data.
Trace softtool