Rohde & Schwarz R&S UPP, User Manual

Page: 486 / 938

Instrument Functions
R&S
®
UPP
470 User Manual 1411.1055.32 ─ 10
These filters are implemented as recursive, elliptical eighth-order digital filters (excep-
tion: fourth order is also possible for lowpass and highpass filters). All filters are calcu-
lated by means of frequency transformation from a database with standardized refer-
ence lowpass filters. The ripple in the passband is 0.1
dB; stopband attenuation is
available in steps of approx. 10 dB.
The user only has to enter the passband and the minimum stopband attenuation. The
frequencies of the stopband are calculated and displayed taking the required stopband
attenuation into consideration. The implemented stopband attenuation is always equal
to or greater than the specified value.
Apart from the parameters entered in the Filter panel, the sampling rate must also be
known to allow calculation of the filter. The other parameters (stop frequency, delay
and the attenuation actually implemented) can therefore only be calculated and dis-
played after the filter has been activated in the analyzer or generator.
5.40.1 Filters 01 to 09
Selection of the filter type for the filters 1 to 9.
Filters 01 to 09
Remote command:
SENSe[1]:UFILter<n2>
on page 774
User-Definable Filters