PortaNet User Manual
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Differences between the audio on line 1 and line 2:
1.
The audio output of mix1 passes through a compressor/limiter
before feeding line 1 encoder. Line 2 does not have a
compressor/limiter.
2.
The audio vu-meter ONLY monitors the output of MIX1.
3.
In IP, the compression mode for line 2 is fixed to G722 mode.
Audio input diagram
All the four inputs of the PortaNet are balanced XLR connector. Three of them
are located on the front panel and the fourth one is on the rear panel. All of
them can be configured to accept LINE or MIC levels, and to be phantom
powered (48 volts.).
At either side of the connectors are microswitches which allow the selection
between MIC/LINE levels and phantom power. On the top panel there is one
level control for each input. When the phantom switch and the MIC level are
selected, the audio input gain is decreased by 15 dB to compensate for the
higher output of condenser microphones.
X.3
Audio “International Sound” input
This is an additional line level which can be mixed to the headphone outputs to
provide the international sound to the commentators.
X.4
Audio outputs
PortaNet includes two kinds of audio outputs: headphone and balanced line level
auxiliary outputs. These outputs can be configured depending on the
requirements of the application, by setting the matrix available in the PortaNet
web browser.
