Rohde & Schwarz SMU200A - Conflicting Settings - Custom Digital Mod

Instrument Function
R&S
®
SMU200A
347Operating Manual 1007.9845.32 ─ 15
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SOUR:BB:DM:FILT:TYPE
LTEFilter
User filter
The user filter file must have extention *.vaf and can be created with the R&S filter
wizard.
The filter wizard (filtwiz) is a tool from Rohde & Schwarz designed for creating filter files
that can be imported on a R&S SMU. Its main purpose is the conversion of user-defined
finite impulse response (FIR) filters into the filter format (*.vaf).
Beyond this filtwiz provides designs for standard filters (e.g. Root Raised Cosine, Gaus-
sian) as well as a tool to automatically derive a receiver filter from a given transmitter filter
with respect to the Nyquist condition for zero intersymbol interference (ISI).
The program was developed on a 32-bit Microsoft Windows platform under MATLAB.
For more information, refer to the description "Introduction to "filtwiz" Filter Editor" on the
Rohde&Schwarz Internet page.
5.8.3.5 Conflicting Settings - Custom Digital Mod
Having selected a modulation procedure, not every combination is possible when select-
ing the settings for the modulation parameters "Symbol Rate" and "Coding". These
restrictions inevitably give rise to conflicting settings if a parameter is changed and leads
to a prohibited combination.
A conflicting setting is indicated by a message on the Info line in the display. The R&S
SMU displays the setting entered by the user, but the modulation signal actually gener-
Baseband Signal - Baseband Block