Ensemble Designs 7600 HD/SD Embedder/Disembedder - Manual (Page 3)

Model 7600 HD/SD AMD
7600-3
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 be processed with level adjustment and channel mixing, and
shuffling. It can then be embedded into the video output stream.
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.
Power for the module is derived from the ± 12 volt frame power. It is regulated to the
required +5 volts for the digital circuitry by on-board regulators. The required +3 volts for
the multiplexer circuitry is developed in a linear regulator running off the +5 volt supply.
The module is fused with a resettable fuse device. If the fuse opens due to an overcurrent
condition, the module will lose power. After pulling the module, the fuse will reset auto-
matically requiring no replacement fuse.
The on-board CPU can monitor and report module ID information (slot location, software
version and board revision), and power status (+5 volts or +3 volts) to the optional frame
System Control module. This information can be accessed by the user or set to register an
alarm if desired using the remote control options available.
Module parameters can be adjusted through the control system with Avenue Touch
Screens, Express Control Panels, or the Avenue PC Application. Individual level controls
are available for all 8 channels. Memory registers can be used to save the complete config-
uration of the module, making it easy to change instantly between different configura-
tions.
HD or SD In
Ch 1/2
Ch 3/4
Ch 5/6
Ch 7/8
AES
Receivers AES
Transmitters
Tie back
to AES I/O
Ports
HD or SD Outputs
Channel Pairs
1/2 3/4 5/6 7/8
Deserializer Serializer
Video Through Path
2 Group
Disembedder
Channel Pairs
1/2 3/4 5/6 7/8
2 Group
Embedder
Audio
Input
Selector
Audio Mixer
and
Output
Selector
7600 HD/SD AMD Functional Block Diagram