Rohde & Schwarz R&S UPP, User Manual

Page: 422 / 938

Instrument Functions
R&S
®
UPP
406 User Manual 1411.1055.32 ─ 10
Note: The precorrector table is created after acquiring or reading in the trace data from
the "DUT" in the "DispConfig" panels.
"deactivated" The precorrector is disabled. The FFT bins are used and displayed
without change. The levels of the subbands are calculated from the
original FFT spectrum.
"activated" The precorrector is enabled. The next entry field, which is "Equal
File", for the file name of the precorrector table, is activated and the
file shown there is loaded. The levels of the subbands are calculated
from the precorrected FFT spectrum.
Remote command:
SENSe[1]:VOLTage:EQUalize
on page 759
MMEMory:LOAD:IEQualize
on page 758
Frq Lim Low
For entering the lower band limit for computing the subbands and the total RMS value.
Display and computation of the subbands starts at the band in which the lower limit fre-
quency is located. The lower subband is measured in full, that is, the limit frequency
entered does not alter the energy content of the lower band.
The lower the frequency of the lower limit frequency, the narrower the frequency bands
which have to be measured. In order to not to drop below a minimum number of bins
per band, the FFT resolution and the FFT size must be increased in the narrower fre-
quency bands.
The lower limit frequency therefore has a decisive influence on the measurement
speed and should therefore not be lower than the measurement task requires.
Remote command:
SENSe[1]:FREQuency:LIMit:LOWer
on page 760
Frq Lim Upp
For entering the upper band limit for computing the subbands and the total RMS value.
Display and computation of the frequency bands ends at the band in which the upper
limit frequency is located. The upper subband is measured in full, that is, the limit fre-
quency entered does not alter the energy content of the upper band.
The upper limit frequency has no effect on the measurement speed.
Remote command:
SENSe[1]:FREQuency:LIMit:UPPer
on page 760
Bargraph
Used for activating bar graph computation and display. In addition the "Bargraph1" win-
dow can be opened from here.
Frequency Band Analysis