Ensemble Designs 8500 Composite / SD Legalizer and Video Processing Frame Sync - Manual (Page 5)

The 8415 Audio Processor submodule shown below provides eight channels of digital
audio processing. Digital audio inputs to the 8415 can come from four AES ports and/or
disembedded from the 601 SDI input stream. After processing, digital outputs in both AES
and embedded form are possible.
There are four AES ports, using the four AES BNC connectors on the rear of the chassis.
When an 8415 is installed, these BNCs become bi-directional ports. Each of them can
either be an AES input or an AES output. These four AES ports are associated with pairs
of channels: Ch 1/2, Ch 3/4, Ch 5/6, and Ch 7/8. A port will become an output if it has not
been chosen as an AES input in the Aud In A and B menus.
There are two disembedders on the input side of the 8415 referred to as A and B. These
disembedders are being fed the 601 SDI video input stream in parallel and each of them
can be independently targeted to any of the four possible groups. The A disembedder will
produce two pairs of audio signals, referred to as SDI 1/2 and SDI 3/4.
The B disembedder will also produce two pairs of audio signals referred to as SDI 5/6 and
SDI 7/8. In the B disembedder, the SDI 5/6 pair corresponds to the first and second
channels in the selected group and SDI 7/8 is taken from the third and fourth channels in
that same group.
The disembedded audio can then be processed with level adjustment, channel mixing,
shuffling, and automatic tracking of the delay imposed on the video channel. It can then
be embedded into the video signal downstream of the the frame synchronizer, proc amp,
and DNR functions on the 8500 module.
There are two embedders referred to as A and B to support the eight channels of audio,
one for each group. The embedders are placed in series with the A embedder first and the
B embedder second. Each embedder must be configured for operating mode and the
desired group (1 – 4) in which to embed the audio. The configuration parameters for the
embedders in the Audio Out menu are not identical. There is no Replace All function for
the B embedder as this function occurs in the upstream embedder A.
(Note that using the 8415 requires Ave PC software version 2.0.4 and higher and the
Control module must be running version 2.0.5 or higher. These versions can be download-
ed from the Ensemble website.)
CH 1/2
CH 3/4
Dual Audio
Disembed
8415 Audio Processor Option
Source Selection
Level Adjust
Swap & Shuffle
Channel Mixing AES Inputs
Digital
Signal Processing
Ch 5/6
Ch 7/8
Audio
Embed
Output
Routing
Auto
Tracking
Audio
Delay
A A B
To 8500 SDI Out From 8500 SDI In
B
CH 5/6
CH 7/8
AES Outputs
SDI/AES
1/2 Out
SDI/AES
3/4 Out
Switch S4
Switch S5
8415 Audio Submodule Block Diagram
Model 8500 Series Modules
8500-5