MOTOROLA TMX-2010 User Manual
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TMX-2010
Transport Multiplexer
ATSC Application N
March 200
ATSC Application Note
TMX-2010 TRANSPORT MULTIPLEXER
TABLE OF CONTENTS
1 INTRODUCTION......................................................................................................3
2 TMX-2010 MULTIPLEXER ......................................................................................5
3 SE-2000 SINGLE CHANNEL ENCODER................................................................8
4 HIGH DEFINITION ENCODER ................................................................................9
5 ATSC ARCHITECTURES......................................................................................10
6 SUMMARY.............................................................................................................14
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ATSC Application Note
1 Introduction
With local network broadcast affiliates rushing to meet the FCC mandated on-air date
for transitioning to digital ATSC broadcasting, determining an entry-level but fully
compliant encoding and multiplexing solution that is extensible to future more
sophisticated ATSC broadcast applications has become a common goal in the industry.
For example, a new ATSC broadcaster may begin with a digitally compressed MPEG
version of their traditional programming along with the FCC compliant amount of
program and system information protocol (PSIP), but later grow to add more programs
(multicasting) including high definition and data services.
Motorola BCS has designed a modular system to best meet a phased approach to full
DTV operations. The basic building blocks include a transport multiplexer and
standalone encoders. The elements seamlessly fit together to facilitate cost-effective
compliance and rapid deployment of new services.
TMX-2010 TRANSPORT MULTIPLEXER
Digital Satellite Receiver
TMX-2010 Multiplexer
TMX-2010
TMX Element Manager
ASI
SSI
SSI
Broadcast Tower
ASI
Cable Plant
Monitor
High Definition Encoder
HD Encoder
Digital Video Encoder
PSIP Generator
Data Serve r
ASI
ASI
ASI
IP
Hub
An application-rich local network broadcast affiliate incorporates network feeds, local
created content, data services, server content and supports separate private networks
and cable distribution pipes.
The Motorola Broadband Communications Sector’s (Motorola BCS) TMX-2010
transport multiplexer is built upon a flexible, module-based chassis, providing basic
multiplexing, ATSC standard PSIP handling (A/65) and IP data encapsulation (A/90),
and bitrate transcoding. Additional functionality such as statistical multiplexing and
PC
DTV Set
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ATSC Application Note
digital program insertion are optional upgrades. Motorola BCS’ SE-2000 digital video
encoder is a one rack unit high device providing high quality standard definition
encoding and audio processing. The high definition encoder contains all of the
input/output connections necessary for converting incoming, full bandwidth HD video,
audio and data into the ATSC-compliant MPEG-2 bitstream.
TMX-2010 TRANSPORT MULTIPLEXER
4
ATSC Application Note
2 TMX-2010 Multiplexer
The TMX-2010 Transport Multiplexer is Motorola BCS' new generation modular solution
for MPEG-2 cable, satellite and broadcast transport distribution architectures.
It supports many features to tailor MPEG-2 streams.
Service Multiplexing: Basic combining of multiple streams into one multiplex.
Grooming: The ability to select (add/drop) the streams that will appear in the
output transport.
TMX-2010 TRANSPORT MULTIPLEXER
The TMX Element Manager provides user friendly GUIs for simple and flexible selection
from the input MPEG-2 services into one or more customized transport stream outputs.
Video bit-rate transcoding
2 video elementary stream followed by a re-encode for the purpose of reducing the
video bitrate. The TMX-2010 supports transcoding of constant or variable bitrate
inputs into statistically multiplexed groups.
5
: Transcoding is a method of partially decoding a MPEG-
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