Loading ...
Loading ...
Loading ...
Applications
R&S
®
RTB2000
121User Manual 1333.1611.02 ─ 03
Shortcuts for FFT
1 = Start frequency
2 = Stop frequency
3 = Center
4 = Span
5 = Resolution bandwidth (RBW)
Source
Selects the channel for which the captured data is analyzed for the FFT. You can
select one of the active input channels, math or reference waveforms.
Remote command:
SPECtrum:SOURce on page 328
FFT Window
Windowing helps minimize the discontinuities at the end of the measured signal inter-
val and thus reduces the effect of spectral leakage, increasing the frequency resolu-
tion.
Various different window functions are provided in the R&S RTB2000 to suit different
input signals. Each of the window functions has specific characteristics, including some
advantages and some trade-offs. Consider these characteristics carefully to find the
optimum solution for the measurement task.
"Hanning"
The Hanning window is bell shaped. Unlike the Hamming window, its
value is zero at the borders of the measuring interval. Thus, the noise
level within the spectrum is reduced and the width of the spectral
lines enlarges.
Use this window to measure amplitudes of a periodical signal pre-
cisely.
FFT Analysis
Loading ...
Loading ...
Loading ...