R&S UPZ
Applications
Output switcher
Operating Manual 1120.8610.14 - 0
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55
3.2 Output switcher
The following basic diagram shows a typical application of an output switcher.
L
L
L
L
R
R
R
R
Stereo System
Phono
Tuner
CD
Tape
Speaker Outputs
Signal Inputs
Rs232
FROM
PREVIOUS
USB
USB
DEVICE
R&S Audio Analyzer
Fig. 3-2 Use of output switcher
A commercial stereo system generally has several inputs for feeding signals. The
generator has a dual-channel connection to busbars
A
and
B
. The output switcher
controls the individual inputs of the stereo system. Their loudspeaker outputs are then
connected to the analyzer inputs. Thus, up to four inputs (each with left and right
channel) of the stereo system can be sequentially routed to the two inputs and
measured without modifying the cabling. Only the inputs of the stereo system have to
be manually switched over because this cannot be done by the remote control via the
Audio Analyzer.
If the output switcher is suitably connected, the channels can be set step by step. To
do this, all left inputs of the stereo system are switched to busbar
A
, and all right inputs
to busbar
B
). The number of inputs to be measured (4 in the above
example) is used as tracking (channel offset). Thus, the left inputs are on 1, 2, 3 and 4,
whereas the right inputs are on 5, 6, 7 and 8. With a step width of 1, the stereo inputs
can easily be through-connected.
