Ensemble Designs BrightEye 30 handleiding

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Ensemble Designs

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Handleiding

BrightEye 3

BrightEye-5

The four channel mixer/shuffler is sub-divided into two, two channel

mixer/shufflers. The digital to analog path is supported by channels 1 and 2. The

reverse path (analog to digital) uses channels 3 and 4. Channel assignments are

limited to only allow assignment of inputs 1 and 2 to outputs 1 and 2; and inputs

3 and 4 to outputs 3 and 4.

The channel 1/2 outputs of the mixer are presented on analog outputs 1/2; and

mixer's channel 3/4 outputs drive the 3/4 AES output connector.

Conversion to and from the analog domain is performed at 48kHz, oversampled

by 256x to 24 bits of precision.

The reference input is active in this mode. It will accept analog composite video

(NTSC or PAL), 48kHz AES, or 48 kHz wordclock. The reference circuitry will

automatically detect any of these four signals and lock BrightEye 30's internal

clocks to the reference signal. When locked to a reference, the channel 3/4 AES

output of BrightEye 30 will be synchronous to that reference.

Successful genlock is indicated by a steady Green 'Ref' LED on the front of the

unit. The LED will light Red if some sort of genlock signal is present but

BrightEye 30 is not able to lock to it. BrightEye 30 operates internally at 48kHz

sample rate, and reference signals must be compatible with that rate.

The LED will be extinguished if no reference signal is detected. In this case, the

clocks are derived from an internal standard which exceeds AES specifications for

clock accuracy and jitter performance.

4. Sample Rate Conversion (and two channel Digital to Analog Conversion)

When configured as a digital sample rate converter, BrightEye 30 is a two

channel device, processing the channel 1/2 AES input connector and outputting to

the channel 3/4 AES output connector. The same signals are also output in analog

form on channels 3/4.

AES 1/2

Sample Rate

Converter

Analog Audio Output

Ch 3/4

AES or Video Ref In

AES 3/4

Output

AES

Rcvr

Audio Clock

Generation

2 Channel

D to A

2 Channel

Mix

Shuffle

Gain

AES

Formatter

BrightEye 30 Sample Rate Conversion Mode

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