GUI Reference
R&S
®
ZNC
161
User Manual 1173.9557.02 ─ 13
Note:
The frequency domain window is used to filter the trace prior to the time domain
transformation. An independent time gate ("TRACE CONFIG > Time Gate") can be used
after the transformation in order to eliminate unwanted responses.
The analyzer always uses a "No Profiling (Rectangle)" window to calculate the time-gated
frequency domain trace, see
"Time-Gated Frequency Domain Trace"
Remote command:
Side Lobe Level
Defines the side lobe suppression for an "Arbitrary Sidelobes (Dolph-Chebychev)" win-
dow. The entered value is the ratio of the power of the central lobe to the power of the
first side lobe in dB.
Remote command:
Resolution Enh(ancement)
Broadens the frequency range that the analyzer considers for the time domain transform
by a linear factor. A factor of 1 means that the original sweep range and the measured
sweep points are used; no additional assumptions are made. With higher resolution
enhancement factors, the measurement data is extrapolated using a linear prediction
method. As a result, the resolution in time domain can be improved.
The ideal resolution enhancement factor depends on the properties of the DUT. In dis-
tance to fault measurements on cables, factors between 3 and 5 turned out to be a good
choice.
Remote command:
4.2.4.8
Low Pass Settings (Dialog)
The "Low Pass Settings" dialog defines the harmonic grid for low pass time domain
transforms.
Background information
Refer to
chapter 3.7.1.4, "Harmonic Grid"
Access:
TRACE > TRACE CONFIG > Time Domain > Low Pass Settings...
Trace Settings