R&S UPZ
Applications
Input Switcher
Operating Manual 1120.8610.14 - 0
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Applications
Since the signal path of the R&S UPZ is a pure relay switching matrix, its use is not
limited to audio frequency applications. It is possible to switch AES/EBU-coded signals
by means of a R&S UPZ, for example. Due to the impedance of the connectors and
lines in the R&S UPZ, the cables used should not be too long.
3.1 Input Switcher
The following basic diagram shows a typical application of an input switcher.
O N
.
D o lb y D ig ita l 5 .1
C e n te r
F ro n t L e ft
F ro n t R ig h t
R e a r L e ft
R e a r R ig h t
S u b W o o fe r
G E N E R AT O R
A N A LYZER
1
2
2
1
R s 2 3 2
F R O M
P R E V IO U S
U S B
U S B
D E V IC E
R & S A u d io A n a ly z e r
Fig. 3-1 Use of input switcher
A modern multichannel surround-sound system has 5 + 1 outputs, which control the
associated loudspeakers. The first five outputs are identical whereas the additional
channel is used to connect a subwoofer. These six signal outputs are connected to six
inputs of an input switcher, so that the Audio Analyzer can measure the surround-
sound system without having to recable the connection.
