160 X75HD/X75SD Installation and Operation Manual
Chapter 9: Audio Configuration
Advanced Audio Inputs and Outputs Selection
In hybrid analog and digital standard definition processing for audio,
typically 4 audio channels are used. Users of X75 for hybrid analog/
digital standard definition video processing with audio have discovered
the M-PATH video and audio multiple path processing capabilities and
have asked for an enhancement.
Today's X75 embedded audio functionality allows for the 8 or 16
processed audio channels to be embedded into both SD-SDI outputs.
If you are processing two video signals, each with 4 channels of audio,
the processed audio can only be selected into two different groups (for
example group 1 and group 2).
For ease of configuration across multiple processes in a facility, the 4
audio channels are typically embedded into group 1. The new free
enhancement allows the user to place the processed audio channels for
each video channel into the same embedded group (typically group 1).
The 16 processing audio channels can be embedded in any sequence
independently on SD-SDI, SD-SDI2 and HD-SDI outputs. Embedded
audio processing for X75 requires that an audio module be installed.
For custom applications, the X75 unit provides full input and output
routing control. You can select multiple audio input sources
simultaneously and route them internally to meet your application
requirements (see Figure 9-4 on page 161). Each SRC can be assigned
to any stereo input sources. Mono-based audio outputs can select any
SRC outputs, including the summation, tones, and mutes. More than
one audio input LED will light when multiple audio input sources are
selected (for example, Analog and AES).
As Figure 9-4 on page 161 shows, the audio output is simultaneously
sent to three embedders (HD, SDI 1, and SDI 2); routing blocks are
located in front of the two SDI -‘embedders to allow these embedders to
be independently configured.
To make changes to these audio input and outputs, follow this path:
Audio Setup>Routing
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