Enova DGX Audio Switching Boards
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Hardware Reference Manual – Enova DGX 100 Series Digital Media Switchers
System Examples
The examples below show typical uses for the audio replacement and routing functions of the Audio Switching Board. Directions for
wiring the terminal block connectors are on page 148 and for cabling the HSSI SMA connector are on page 149.
Enova DGX systems with Audio Switching Boards are designed to route audio through the system in three ways:
Embedded Audio – An audio signal from an Audio Switching Input Board can be embedded on a video signal and then
routed to any or all of the standard video output boards.
Audio Only – An audio-only signal from an ASB Input Board can be routed to any or all of the ASB Output Boards.
All Audio – All audio signals (embedded or audio-only) are available to route to any or all destinations.
Embedded Audio – Replacing Embedded Audio on Video Signals
The Audio Switching Boards replace embedded audio on a standard video board (HDMI shown) with an audio-only signal from an
auxiliary audio source. The HDMI video signal is routed to a destination with the original video signal and the replaced embedded
audio signal. This behavior is enabled by default.
Audio Only – Audio Only from Source to Destination Device
The Audio Switching Input Board can route from connected sources directly to the Audio Switching Output Board and from there to
connected audio destination device(s).
All Audio (Embedded or Audio Only) – Routing to Differing Types of Destination Devices
The Audio Switching Output Board can route the HDMI embedded audio signal from an HDMI Input Board to an audio-only
destination (its breakaway function) while the HDMI embedded audio signal remains intact from the HDMI Output Board to another
destination device or devices.
IMPORTANT: When audio is routed as a breakaway signal from an HDMI signal, the audio also remains intact as embedded audio on
the HDMI signal.
FIG. 83
Audio on the HDMI input signal is replaced with auxiliary audio and routed to destination device
FIG. 84 Audio input signal routed to audio destination device
FIG. 85 Audio Switching Boards routing audio on HDMI input signal to both video destination and audio-only destination
AC
DC
FLT
AC
DC
FLT
HDMI with embedded audio
HDMI – auxiliary audio replaces embedded audio
Source device
Destination device
(video and audio)
Auxiliary audio system
Audio-only signal
Signal through system
AC
DC
FLT
AC
DC
FLT
Signal through system
Audio-only signal
Audio-only signal
Source device
Audio destination
device
AC
DC
FLT
AC
DC
FLT
Signal through system
Source device
Audio destination
device
Breakaway of analog stereo audio
HDMI with embedded audio
HDMI – embedded audio routed with video
Destination device
(video and audio)