Chapter 6: Audio Modules; Overview - Harmonic Electra9200 Installation Manual

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:

Overview

n
IOM-RAC2 Module
n
AHC-RAC Module
n
AHC-561 Module
n
Overview
The following table describes the audio module features.
Table 6–1: Audio Module
Module
IOM-RAC2
AHC-RAC
© 2015 Harmonic Inc. All rights reserved.
Embedded audio extraction of eight pairs, per serial digital video input (48 kHz
n
synchronous to video only).
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
n
pairs.
a
AAC/HE AAC compression with MPEG-2 or MPEG-4 encapsulation; up to 16 stereo
n
pairs or 8 multi channel plus 8 stereo pairs.
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
n
MPEG-1 Layer II, E-AC-3, AC-3, AAC, HE-AAC, and Dolby E
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
n
for more information.
AES3 digital audio inputs; 4x BNC (AES 3id/SMPTE 276M).
n
Embedded audio extraction of eight pairs from four groups, from serial digital video
n
input (48 kHz synchronous to video only).
MPEG-1L2 compression; up to three stereo pairs.
n
AC-3 compression; up to three stereo pairs or one multi channel
n
c
AAC/HE AAC compression with MPEG-2 or MPEG-4 encapsulation; up to three
n
stereo pairs or one multi channel.
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
n
more information.
51
Chapter 6
Audio Modules
Feature
Electra 9200, Rev O
Overview
IOM-RAC2 Module
b
.
AHC-RAC Module for