Harmonic Electra9200 - Chapter 6: Audio Modules; Overview

Chapter 6 Audio Modules Overview
© 2015 Harmonic Inc. All rights reserved. 51 Electra 9200, Rev O
Chapter 6
Audio Modules
This chapter contains comprehensive information for the Electra 9200 encoder audio
options. It describes the optional audio modules, and provides specifications and cabling
instructions. It includes the following sections:
n Overview
n IOM-RAC2 Module
n AHC-RAC Module
n AHC-561 Module
Overview
The following table describes the audio module features.
Table 6–1: Audio Module
Module Feature
IOM-RAC2 n Embedded audio extraction of eight pairs, per serial digital video input (48 kHz
synchronous to video only).
n MPEG-1Layer II compression; up to 16 stereo pairs.
n AC-3 and E-AC-3 compression; up to 16 stereo pairs or 8 multi channel plus 8 stereo
pairs.
n AAC/HE AAC
a
compression with MPEG-2 or MPEG-4 encapsulation; up to 16 stereo
pairs or 8 multi channel plus 8 stereo pairs.
n AC-3 2.0 or 5.1 pass-through, 16 streams.
n E-AC-3 2.0 or 5.1 pass-through, 16 streams.
n Dolby E pass-through, 16 streams.
n Transcoding from MPEG-1 Layer II, E-AC-3, AC-3, AAC, HE-AAC, and Dolby E to
MPEG-1 Layer II, E-AC-3, AC-3, AAC, HE-AAC, and Dolby E
n Audio leveling capacity: up to 16 streams (maximum of 8 multi channel streams)
n No more than one IOM-RAC2 module supported per chassis. See IOM-RAC2 Module
for more information.
AHC-RAC n AES3 digital audio inputs; 4x BN C (AES 3id/SMPTE 276M).
n Embedded audio extraction of eight pairs from four groups, from serial digital video
input (48 kHz synchronous to video only).
n MPEG-1L2 compression; up to three stereo pairs.
n AC-3 compression; up to three stereo pairs or one multi channel
b
.
n AAC/HE AAC
c
compression with MPEG-2 or MPEG-4 encapsulation; up to three
stereo pairs or one multi channel.
n AC-3 2.0 or 5.1 pass-through.
n E-AC-3 2.0 or 5.1 pass-through.
n Dolby E pass-through.
n Up to five AHC-RAC modules supported per 9200 chassis. See AHC-RAC Module for
more information.