VNA GUI reference
R&S
®
ZNL/ZNLE
383
User Manual 1178.5966.02 ─ 19
Smoothing
Activates the smoothing function for the active trace, which can be a data or a memory
trace.
With smoothing active, the trace value at each sweep point is replaced by the arith-
metic mean of the trace values at the sweep point itself, and at neighboring sweep
points (symmetrically, to the left and to the right). The number of trace values to be
averaged is defined by the
and can be adjusted according to the properties of
the trace.
Smoothing operates on the formatted trace and does not significantly increase the
measurement time.
Tip:
The sweep average is an alternative method of compensating for random effects
on the trace by averaging consecutive traces. Compared to smoothing, the sweep
average requires a longer measurement time but does not have the drawback of aver-
aging out quick variations of the measured values.
See
Remote command:
CALCulate<Chn>:SMOothing[:STATe]
Aperture
Defines how many trace values are averaged to smooth the trace if
is
switched on.
An "Aperture" of
a
% means that the value at sweep point
n
∈
{1, ..., N}
is replaced by
the arithmetic mean of the values at sweep points
max { 1,
⌈
n – a/100·N/2
⌉
}, ..., min { N,
⌊
n + a/100·N/2
⌋
}
,
Trace softtool
