Rohde & Schwarz R&S UPP, Руководство пользователя

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Instrument Functions
R&S
®
UPP
407 User Manual 1411.1055.32 ─ 10
Configuration of the bar graphs is reserved for the "Bargraph1 Config" and/or "Bar-
graph2 Config" windows. The actual display takes place in the "Bargraph1" or "Bar-
graph2" windows.
"deactivated" Bargraph computation (and update) disabled. Only the band-limited
total RMS value is measured.
"activated" Bargraph computation (and update) enabled.
Remote command:
SENSe[1]:FUNCtion:BARGraph
on page 758
Post FFT
For activating/deactivating Post FFT. At the same time it is possible to switch between
automatic and manual selection of the FFT size and window. In addition the "FFT
Graph1" window can be opened from here.
Configuration of the FFT Graph is reserved for the "FFT Graph1 Config" and/or "FFT
Graph2 Config" windows. The actual display takes place in the "FFT Graph1" or "FFT
Graph2" windows.
"deactivated" Post FFT deactivated.
The necessary Post FFT size is computed automatic from the sam-
pling rate and the width of the narrowest subband (defined by the
lower limit frequency and the measurement mode).
The received samples are weighted using the Hann window function.
"activated"
Post FFT is enabled and can be displayed. The FFT size and window
can be selected manually.
Note: When Post FFT is turned on the FFT size and window are loa-
ded with the recommended standard settings. The manual settings
are discarded when Post FFT is turned off.
Remote command:
SENSe[1]:FUNCtion:FFT:STATe
on page 758
FFT Size
This is the FFT size to be used in computing the subbands, and is adjustable in powers
of 2 from 512 (0.5
k) to 256 k.
Frequency Band Analysis