Introduction - pro bel 4407 Technical Manual

4407
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Introduction

The 4407 is a eight output AES3 digital audio synchroniser/converter. It is designed
to synchronise non-synchronous digital audio when locked to a AES11 reference. It
will also sample rate convert from any valid digital audio signal in the range 32kHz
to 54kHz to one of the available output sample clock rates; 32kHz, 44.1kHz and
48kHz.
The module features an on-board gain control, remote fader option and a
programmable automatic fade facility is provided. Audio modify features include
channel swap, either channel to both output channels and digital silence.
Remote control of gain and fader response is available through a dedicated RS484
serial port.
The module may be used in the 1050 3U and 1051 1U ICON modular product
rackframes with a choice of balanced or unbalanced rear connectors.
Characteristics of the 4407 are:
· eight outputs
·
AES3 or SPDIF inputs
· sample rate synchronising for asynchronous 32kHz, 44.1kHz or 48kHz sources
when module locked to AES11.
· sample rate conversion from 32 to 54kHz
· AES11 reference input
·
gain control 0dB to -12dB
· jumper selectable audio modify facilities (A-both, B-both, A/B swap and digital
silence)
· RS485 serial control (four wire and two wire) of gain and fader response
· automatic fade to or from silence in 0,1,2,4 or 8 seconds under serial control
·
compatible with Pro-Bel COSMOS status monitoring.
Technical Manual
Digital Audio Sample Rate Converter
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