Ensemble Designs 8500 Composite / SD Legalizer and Video Processing Frame Sync User Manual
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the normal audio functions and is carried to the AES output formatter and
driver.
When in the Data mode, the AES formatter is driven by the output timing
of the 8500, the original SDI input must be synchronous to the reference
input or the 8500 must be configured to use the SDI signal as the timing
reference.
Data mode signal to be disembedded, output as AES, then re-
embedded – In this case the audio submodule is also required. This case is
similar to the one above, while the disembedded data is re-embedded in the
SDI output of the 8500. The same timing requirements apply.
Original embedded data to be left unchanged with an additional
embedded group to be added – The original embedding in the SDI input
passes through the 8500 processing path. At the same time, an audio
submodule is used to create a second embedded group which is placed in
cascade, following the original audio group which contains the data mode
signal.
A data mode signal in AES format is input to the audio submodule –
This example could be used when there is a need to embed the AES data
into the output of the 8500. In this case the AES data input must be syn-
chronous. When being used in this manner, the audio submodule can embed
data mode AES into one pair of channels in an embedded group, while
embedding conventional audio into the other pair.
•
Audio Mix: This menu gives full access to the 4x4 or 8x8 audio mixer controls.
Any input channel can be routed to any or all output busses. Sliders or Touch
Screen rotary knobs permit levels to be adjusted from -70dB to +12dB.
Alternatively a value can be put in the numeric window, followed by the Enter key,
and this will become the new gain setting. Default buttons are provided for return
to zero level.
The Tie function is used for stereo operation where gain of a pair of channels is
usually desired to be the same. An invert selection allows inversion of a channel to
permit phase correction.
•
Audio Delay: With the Auto Track switched On, audio will be delayed the same
amount as the video passing through the 8500 frame synchronizer thus preserving
lip sync. If incoming audio is early due to signals passing through an upstream
frame sync without a compensating audio delay, Bulk Delay can be used to correct
the problem. Up to 1000 mS of fixed delay can be added to compensate for
upstream timing errors.
8500-18
Model 8500 Series Modules