AIE Audio Insert/Extract Boards
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Enova Digital Media Switchers - Hardware Reference Manual
AIE Audio Insert/Extract Boards
Overview
This chapter pertains to the Enova DGX Audio Insert/Extract (AIE) Board (FG1058-705 ), which supports analog stereo
audio. The Enova DGX Audio Insert/Extract Board works in conjunction with HDMI, 4K HDMI, DVI, DXLink Twisted Pair, DXLink
Twisted Pair 4K, and DXLink Fiber Input or Output Boards. The AIE Board can be installed in any of the expansion board slots
on the rear of the Enova DGX enclosure. The AIE Board can provide audio insertion and/or extraction functionality for
either the input or output boards. The board’s DIP switches must be set per the individual system’s requirements.
The configuration process requires removing the board from the enclosure and setting its DIP switches (for details, see
page 180). By default, the AIE Board is set with the extract/insert function enabled. In addition, the connectors default to
"extract" audio.
NOTE:
Setting the DIP switches is the only mechanism for configuring the Audio Insert/Extract Board to either insert or
extract audio. Therefore, setting the switches (which requires removal of the board from the enclosure) should be done at
the time of installation.
The Enova DGX 800/1600/3200 holds up to two AIE expansion boards (FIG. 83). The Enova DGX 6400 holds up to eight AIE
expansion boards:
NOTE:
Enova DGX 800 only: AIE Board connectors 1-8 in the left and right expansion board slots correspond to standard connectors
1-8 on the input and output boards respectively. AIE connectors 9-16 are inoperable.
Embedded audio signals switch with the video channels. Through the use of the Audio Insert/Extract Board, embedded
audio can be extracted and external audio matrix switches can be executed (using a separately purchased audio matrix
switcher like the Precis DSP) and then reinserted post-switch on the output side. For complete information on the Audio
Insert/Extract Board, see page 183.
Rules for System Setup
Individual connectors on an AIE Board in either expansion slot can be configured by setting the DIP switches to
insert or extract audio (default = "Enable/Extract").
If an AIE connector is set to "Disable," then it
must
also be set to "Extract."
When audio is "extracted" from an HDMI signal, the audio signal is not only sent to separate audio equipment but
also remains intact as embedded audio on the HDMI signal which is handled by the Enova DGX Switcher.
When audio is "inserted" onto an HDMI signal, the audio signal replaces the embedded audio on the HDMI signal
which is handled by the Enova DGX Switcher.
Left expansion board slot (Enova DGX 800/1600/3200) and top expansion board slots (Enova DGX 6400) – AIE
Board connectors correspond numerically to the standard input connectors. The audio signal on AIE Input 1 is
either inserted or extracted onto/from standard Input 1 (2 works with 2, 3 works with 3, etc).
For example, when AIE Input 1 in the left expansion board slot is set to insert and then you route HDMI Input 1, the
audio signal for AIE Input 1 is embedded on the HDMI signal.
Right expansion board slot (Enova DGX 800/1600/3200) and bottom expansion board slots (Enova DGX 6400) –
AIE Board connectors correspond numerically to the standard output connectors. The audio signal on AIE Output
1 is either inserted or extracted onto/from standard Output 1 (2 works with 2, 3 works with 3, etc.).
The audio is always inserted or extracted as analog stereo audio at line level.
Insert/Extract settings provide unity gain to and from the digital domain.
IMPORTANT:
The AIE Boards do not form an independent switching matrix. When an AIE Board is used on the input side,
audio signals cannot be controlled separately, but must either switch with the HDMI as embedded audio (insert function)
or are sent to supplemental audio equipment (extract function). When an AIE Board is used on the output side, audio
signals have already been switched as embedded audio with HDMI and can be either replaced or extracted,
depending on which function is set.
FIG. 83
AIE Audio Insert/Extract Boards installed in Enova DGX 3200 (Expansion Slots)
Audio Insert/Extract
Board
Audio Insert/Extract
Board
