R&S ZVL GUI Reference
Trace Menu
Operating Manual 1303.6580.32-06
146
Normal Profile
(Hann)
32 dB 1.6
Good compromise between pulse width and
sidelobe suppression
Steep Falloff
(Bohman)
46 dB 1.9
Dynamic range: separation of distant responses
with different amplitude
Arbitrary Sidelobes
(Dolph-Chebychev)
User defined between
10 dB and 120 dB
1.2 (at 32 dB sidelobe
suppression)
Adjustment to individual needs; tradeoff
between sidelobe suppression and impulse
width
Remote control:
CALCulate<Chn>:TRANsform:TIME:WINDow
CALCulate<Chn>:TRANsform:TIME:DCHebyshev
Low Pass Settings
The Low Pass Settings dialog defines the harmonic grid for low pass time domain transforms.
Harmonic grid
A harmonic grid is formed by a set of equidistant frequency points f
i
(i = 1...n) with spacing Qf and the
additional condition that f
1
= Qf. In other words, all frequencies f
i
are set to harmonics of the start
frequency f
1
.
If a harmonic grid, including the DC value (f = 0) is mirrored to the negative frequency range, the result is
again an equidistant grid.
The point symmetry with respect to the DC value makes harmonic grids suitable for lowpass time domain
transformations.
The dialog can be used to change the present grid of sweep points, which may or may not be harmonic.
• The three buttons in the Set Harmonic Grid... panel provide alternative algorithms for calculation
of a harmonic grid, based on the current sweep points.
• The control elements in the DC Value panel define the measurement result at zero frequency and
in the interpolation/extrapolation range between f = 0 and f = f
min
. They are enabled after a
harmonic grid has been established.
Defining the low frequency sweep points
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