Options and Upgrades
Page 3-8
Reference Guide: Voyager E5784 and E5788 HD DSNG Encoder
ST.RE.E10137.3
3.4
Advanced Audio Coding Option
(M2/EOM2/ADVAUD)
3.4.1 Overview
The Advanced Audio Coding option module supplements the audio
encoding functionality of the Encoder to enable it to be used as a drop-in
replacement for other Encoders. It can encode four stereo audio pairs
(two-channels) or one multi-channel (six-channels - multichannel MPEG-2
AAC (ISO/IEC 13818-7) (LC)) and one stereo pair (two-channels). No
other combination of channel inputs is permitted.
The module can receive up to four simultaneous, independent AES3-2003
inputs on four 75
Ω
BNC co-axial AES3 inputs (compliant to AES-3id-2001)
located at the Encoder’s rear panel. It can also accept four AES3 inputs
from the Encoder’s backplane to permit the use of embedded audio. Each
input supports 16, 20 and 24-bit resolutions and 48 kHz sampling and is
capable of passing 16, 20 and 24 bit samples to the audio encoders. 24 or
20 bit input samples can be rounded to 16 bits.
The module accepts a PCR clock of 27 MHz in the form of a 3 wire serial
interface.
The inputs are synchronised to the system reference clock
through the use of phase locked sample-rate converters prior to encoding.
3.4.2 Assembly
Rear Panel
Figure 3.2: Advanced Audio Coding Option (M2/EOM2/ADVAUD)
The Additional Audio Coding option module comprises Assembly S14048
and Card S13600. See Table 3.1 for the slots that it can be installed in.
AES 1
AES 2
AES 3
AES 4
AES REF
A
Analogue Composite Video
Serial Digital Interface
HD Serial Digital
Interface
Audio Input
Encoder
Additional Audio Option
AES 1
AES 2
AES 3
AES 4
AES REF
Four stereo audio pairs
(two-channels)
or one multi-channel (six-channels)
and one stereo pair (two-channels).
27 MHz Reference Signal
Output Transport Stream
Output Transport Stream
Output Transport Stream
COMP VIDEO
SDI IN
HD SDI IN
AUDIO IN
ASI OUT 1
ASI OUT 2
ASI OUT 3
