R&S FSW-K7, User Manual

Page: 24 / 407

Measurement Basics
R&S
®
FSW-K7
24 User Manual 1173.9240.02 ─ 23
4 Measurement Basics
Some background knowledge on basic terms and principles used in Analog Demodula-
tion measurements is provided here for a better understanding of the required configu-
ration settings.
● Demodulation Process ............................................................................................24
● Demodulation Bandwidth ........................................................................................ 26
● Sample Rate and Demodulation Bandwidth ........................................................... 27
● AF Triggers ............................................................................................................. 28
● AF Filters .................................................................................................................29
● Time Domain Zoom .................................................................................................29
● Receiving Data Input and Providing Data Output ................................................... 30
● Analog Demodulation in MSRA/MSRT Operating Mode .........................................45
4.1 Demodulation Process
The demodulation process is shown in Figure 4-1 . All calculations are performed simul-
taneously with the same I/Q data set. Magnitude (= amplitude) and phase of the com-
plex I/Q pairs are determined. The frequency result is obtained from the differential
phase.
For details on general I/Q data processing in the R&S FSW, refer to the reference part
of the I/Q Analysis remote control description in the R&S FSW User Manual.
Demodulation Process