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Remote Commands Reference
R&S
®
RTC1000
239User Manual 1335.7352.02 ─ 04
Parameters:
<WindowType> RECTangular | HAMMing | HANN | BLACkharris | FLATtop2
RECTangular
The rectangular window multiplies all points by one. The result is
a high frequency accuracy with thin spectral lines, but also with
increased noise. Use this function preferably with pulse
response tests where start and end values are zero.
HAMMing
The Hamming window is bell shaped. Its value is not zero at the
borders of the measuring interval. Thus, the noise level inside
the spectrum is higher than Hanning or Blackman, but smaller
than the rectangular window. The width of the spectral lines is
thinner than the other bellshaped functions. Use this window to
measure amplitudes of a periodical signal precisely.
HANN
The Hann 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 ampli-
tudes of a periodical signal precisely.
BLACkmanharris
The Blackman window is bell shaped and has the steepest fall in
its wave shape of all other available functions. Its value is zero
at both borders of the measuring interval. In the Blackman win-
dow the amplitudes can be measured very precisely. However,
determining the frequency is more difficult. Use this window to
measure amplitudes of a periodical signal precisely.
FLATtop2
The flattop window has a poor frequency resolution, but the best
amplitude accuracy and the sharpest side lobe. It is recommen-
ded for accurate single-tone amplitude measurements.
*RST: HANN
CALCulate:MATH<m>:FFT:AVERage:COUNt <AverageCount>
Defines the number of spectrums used for averaging if
CALCulate:MATH<m>:
ARIThmetics
is set to AVERage.
Parameters:
<AverageCount> Integer value
Range: 2 to 512
*RST: 2
CALCulate:MATH<m>:FFT:MAGNitude:SCALe <Magnitude Scale>
Defines the scaling unit of the y-axis.
FFT
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