Ensemble Designs BrightEye 24 handleiding

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Ensemble Designs

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Handleiding

PRODUCT OVERVIEW

BrightEye™ 24 is both a digital to analog video converter as well as an audio dis-

embedder. The incoming serial digital video signal is converted to an analog

composite signal, while digital audio signals embedded in the digital video signal

are extracted and converted to analog outputs.

Front panel controls select analog reference level, AES group for disembedding,

and provide gain adjustment. Input presence and output VU information are

indicated as well. The BrightEye PC Control application is provided to allow more

detailed control of the unit from a PC with USB support.

A glossary of commonly used video terms is provided at the end of this manual.

FUNCTIONAL DESCRIPTION

BrightEye 24 combines a video digital to analog converter with an audio dis-

embedder (demux) and audio digital to analog converter.

The input to the module is a standard definition 601 digital signal (SDI) at either

525 (NTSC) or 625 (PAL) line rate.

The SDI input is digitally encoded to composite video and then converted to

analog form for output on the Cpst Out BNC connector. The encoder will switch

automatically between NTSC and PAL to follow the line standard detected on the

SDI input. When operating in the NTSC standard, setup can be enabled/disabled

using the BrightEye PC interface.

In parallel to the video processing, one group (four channels) of embedded audio is

demultiplexed from the input SDI signal. The disembedder can be targeted at any

of the four possible embedded groups, both from the front panel as well as

through BrightEye PC. Audio levels for the four channels can be adjusted and the

assignment of input channels to output channels (channel swap and shuffle) con-

trolled from BrightEye PC. The audio processing chain also provides audio level

and peak indication. The reference level of the digital processing chain can be set

to either -18 or -20 dBFS.

After the digital audio processing, the four channels are converted to analog form

and output as low impedance, balanced signals. The analog reference level of the

outputs can be set to either -10dBu (pro-sumer) or +4dBu (professional).

Both the analog video and audio outputs will mute to no signal when the input

signal is lost or removed.

BrightEye-2

BrightEye 24 SDI to Analog Converter and Disembedder

Composite Output

Audio

Disembedder

SDI Input

Composite

Encoder

Mixer

Shuffler

Ch 1/2

Ch 3/4

DAC

Ch 1

Ch 3

Ch 2

Ch 4

Balanced

Audio

Outputs

BrightEye 24 Functional Block Diagram

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