Rohde & Schwarz R&S UPP, Руководство пользователя

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Manual Operation
R&S
®
UPP
115 User Manual 1411.1055.32 ─ 10
4.2.3 Analyzers
The R&S UPP performs all measurements using digital signal processing. Here, ana-
log signals to be measured are first subjected to complex analog preprocessing on
analog measurement modules before they are digitized and fed to the digital measure-
ment routines.
This concept has the following advantages:
●
All audio measurement functions are available at both the analog and the digital
interfaces.
●
The measurement methods at the analog and digital interfaces are identical.
●
Operation at the analog and digital interfaces is always the same.
●
The R&S UPP can also perform the complex measurement functions simultane-
ously on all channels; this results in an overall measuring time that is insignificantly
higher than the sample time.
●
Several measurement functions, e.g. level measurement, FFT analysis, waveform
analysis, etc., are calculated simultaneously in FPGAs and can therefore be dis-
played at the same time without a delay.
●
The digital measurement routines can continuously adapt their speed to the current
input frequency and thus achieve high measurement speeds.
●
Since the filters are also digital, an almost infinite number of filters is available and
can also be used for measurements at analog interfaces.
With the R&S UPP-B2 (digital audio interfaces) option, digital audio data streams can
also be measured at AES/EBU or SPDIF interfaces.
4.2.3.1 Function Blocks and Measurement Levels
The analyzer component of R&S UPP contains a series of measurement options that
are organized in various measurement levels. The measurement results of these levels
can also be displayed simultaneously.
The unfiltered input signal is analyzed at the input monitor level . The peak level at
the input connectors is analyzed here.
Functional Division of the Audio Analyzer