Rohde & Schwarz R&S UPP, User Manual

Page: 490 / 938

Instrument Functions
R&S
®
UPP
474 User Manual 1411.1055.32 ─ 10
Third-
octave fil-
ter:
6
2 low Passband CenterFreq

 
% 15 . 23 2315 . 0 2 1 2 Bandwidth
6 6    
Octave fil-
ter:
2 low Passband CenterFreq

 
% 71 . 70 7071 . 0 2 1 2 Bandwidth
   
With the third-octave and octave filters, the 0.1 dB bandwidth is reduced until an
attenuation of approx. 3 dB is obtained for the cutoff frequencies. The displayed
numeric value for "Width" is therefore less than the 3 dB bandwidth of the third-octave
and octave filter.
Center Freq
Used to specify the center frequency. The notch filter has a transmission zero at the
center frequency; the attenuation at this frequency is considerably greater than the
specified stopband attenuation.
Remote command:
SENSe[1]:UFILter<n2>:CENTer
on page 774
Width
For notch filter: used to specify the difference between the upper and lower cutoff fre-
quency (- 0.1
dB) of the passband.
For third-octave and octave filter: displays the width of the passband.
Remote command:
SENSe[1]:UFILter<n2>:WIDTh
on page 776
Stopb Low
Displays the lower cutoff frequency of the stopband; the cutoff frequency is derived
from the selected passband and the stopband attenuation (only for the notch filter).
This value is only updated after the filter is activated.
Remote command:
SENSe[1]:UFILter<n2>:STOPb:LOWer
on page 775
Stopb Upp
Displays the upper cutoff frequency of the stopband; the cutoff frequency is derived
from the selected passband and the stopband attenuation (only for the notch filter).
This value is only updated after the filter is activated.
User-Definable Filters