Atec MTS300 User Manual
Features & Benefits
Real-time Monitoring and
Compliance Testing of
MPEG, DVB, ATSC and
ISDB Transport Streams
for Complete Application
Flexibility
Status and Error Logging
for Capturing Intermittent
Problems or Creating Test
Records
Dolby Digital AC-3
Compliance Testing and
AAC Stream Monitoring for
Testing Advanced Audio
Capabilities
Tektronix-exclusive PCR
Overall Jitter, Drift and Offset
Measurements Allow You
To Diagnose the Most
Challenging Real-time
Performance Problems
Detailed Off-line Analysis of
Transport Streams, Program
Streams and Elementary
Streams Available to Fully
Verify Design Performance
ASI/M2S, SPI (LVDS),
SMPTE310M and DHEI
Interfaces Available To
Support a Variety of
Design Configurations
Optional Real-time
Multiplexing of Elementary
and Transport Streams
Provides Flexible Real-time
Manipulation of Stream
Content and Parameters
Capture, Playback and
On-line Storage of Transport,
Program and Elementary
Streams
Optional Editing Capability
Allows You to Create Custom
Transport Streams and Inject
Errors or Jitter to Fully Stress
Your Design
Applications
Evaluation and Verification of
MPEG, DVB, ATSC and ISDB
Designs
Design and Verification of
Digital Video Set-top Boxes
(STBs)
Stress and Characterization
of Circuits and ICs Developed
for Products Using MPEG-2
Compressed Digital Video
Technology
MPEG Test System
MTS300
The Tektronix MTS300 MPEG Test System is
a high-performance MPEG protocol diagnostic
and analysis tool giving you innovative solutions
to meet the challenges of designing, verifying
and characterizing products and systems
using MPEG-2 technology.The MTS300 offers
powerful acquisition and computational capabilities for analyzing designs based on MPEG,
DVB,ATSC and ISDB standards.These flexible
and expandable capabilities include real-time
monitoring, data rate analysis and Tektronixexclusive timing analysis to help diagnose the
most challenging problems and characterize
real-time performance. In-depth, deferred-time
(off-line) analysis helps fully verify compliance
to standards and diagnose problems in complex
transport streams. Easy-to-use transport
stream capture, playout and on-line storage
let you build extensive suites of test streams
and use these streams to exercise your
designs.Additional stream editing capability,
with error and jitter injection and real-time
multiplexing, gives you the ability to create
and playout test sequences that fully stress
and characterize design parameters.
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MPEG Test System
MTS300
Real-time Monitoring
The MTS300 uses intuitive icons and colors
to indicate the current status of MTS300
I/O ports and any MPEG transport stream
under analysis. A simple, easy-to-use
display indicates:
The current usage and status of the MTS300
I/O ports.You can install up to four I/O ports
on an MTS300
The current status of monitored transport
streams and the programs within monitored
transport streams. Highly visible indicators let
you quickly identify the transport stream or
program with problems
The type of problem detected in a monitored
transport stream. Intuitive icons show problems
in transport stream protocol, timing errors,
or problems in the video or audio elementary
streams
Using this display,you can easily configure
and control the product in real-time testing
applications, to quickly identify and diagnose
problems with designs or to characterize
design or system performance.
Real-time Analysis
In addition to being an MPEG-2 protocol monitor, the MTS300 gives you powerful real-time
analysis capability to help diagnose difficult
real-time performance problems.The MTS300
real-time analysis capabilities include:
The evaluations recommended by DVB
standard TR 101 290 to verify decodability,
quality and reliability
Tektronix-exclusive timing analysis,including
PCR overall jitter and wander measurements
Flexible, intuitive displays of data rates and
program allocations
Analysis of Mega-frame Initialization packets
used in DVB-T Single Frequency Network
applications
Real-time analysis of transport streams used
in data broadcasting applications based on
ISO/IEC 13818-6 (DSM-CC) and EN 301 192
standards
Fully selectable monitoring depth, fault criteria,
and error reporting and alarms
Triggered capture of transport streams for later
in-depth analysis
Status and error logging
Deferred-time Analysis
and Custom Transport
Stream Creation
A collection of optional MTS300 software
gives you powerful tools for analyzing MPEG-2
transport streams in detail and for creating
your own custom streams to use in functional
and stress testing.
Option DT – Deferred-time analysis and stream
creation: software tools for detailed syntactic
and semantic analysis of the transport stream,
including T-STD buffer simulation, and for
creating custom streams, including error and
jitter injection utilities
Option ES – MPEG video and audio elementary
stream analysis: Software tools for detailed
analysis of MPEG video elementary streams,
including GOP (Group of Picture) structure and
I-frame decoding, and fo r detailed analysis of
MPEG audio elementary streams, including
extraction of audio content into .WAV files
Option AC3 – Dolby Digital AC-3 analysis:
Software for detailed analysis of Dolby Digital
AC-3 audio content
Option TM – Transmission Multiplexing
Configuration Control (TMCC) Combiner:
Software for adding TMCC information
into transport streams
New Advanced Multiplexer
and DVB/ATSC Table Editor –
Multiplexer (Option MTS3FMX)
The software can re-multiplex:
MPEG-2 Video elementary streams
MPEG-2 Audio elementary streams
AC-3 Audio elementary streams
MPEG-2 Video PES (packetized
elementary streams)
MPEG-2 Audio PES
AC-3 Audio PES
PIDs from other transport streams
Other data – the bit rate must be specified
The Solution
The multiplexer allows the user to collect
together components from streams recorded
off hard disk or CD/DVD-ROM, manipulate
them in an unlimited manner and then rebuild
a fully compliant output stream for whatever
use is desired.Along the way, the system’s
in-built syntax knowledge of tables and
descriptors ensure compliance and high
quality output of the final multiplex transport
stream.
Decompose Existing Streams
MTS300’s off-line multiplexer accepts any
recorded transport stream as an input source.
The user can then decompose this transport
stream into its component PES.The user can
then save resulting PES and ES streams
onto disk.
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MPEG Test System
MTS300
Regroup Them with Stored Streams
These PES or elementary video and audio
streams can be grouped together into logical
groups – “Programs” of video, audio and other
associated data (private data, e.g., teletext).
The original timing relationships are
preserved. These streams and/or other prerecorded PES or ES streams can then be
reassembled together to build up a totally
new transport stream as the user desires.
Regrouping of elementary streams or programs can be achieved within an existing
transport stream, by allowing the individual
stream identifiers (PIDs) to be remapped
as required.
Map, Check and Rebuild Your
Own Multiplex
These streams can then be rebuilt into a larger
multiplex stream and new system information
tables can be customized and added. Powerful
syntax auto-check warn the user of mis-mapped,
reserved or duplicate PIDs, including the
Program Paradigm, by checking and automatically updating PAT,PMT and derivable fields
(in its “standard”mode) accordingly, to create
a final legal and DVB or ATSC-compliant output stream. MTS300’s multiplexer allows the
user to be able to construct a transport stream
for any rate equal to or greater than the sum
of the individual components to be multiplexed.
Another facility offered is the ability for the
multiplexer to insert correct PCR values on the
PIDs defined by the user.This allows for PCRs
to be on a separate PID or embedded on an
existing PID.
Generate Compliant Timing and Output Bit
Rates As Required
The multiplexer is able to insert the PCRs
at the correct repetition rate and also allows
the user to specify the PCR repetition rate,
if desired.
Create, Add or Modify SI Flexibility
The multiplexer allows all of the standard
MPEG/DVB/ATSC system information tables
(SI) and descriptors to be edited.The user is
permitted to generate illegal conditions that
allow stress of decoder or transmission chain
equipment to verify its robustness. It is also
possible to generate private tables and
descriptors.
Test Feature – Deliberately Create
Illegal Streams
The software can be set to generate an
optional warning when certain illegal conditions have been generated.This is visible
clearly on the user interface. In a similar manner, the multiplexer allows all legal descriptors
to be added to each table.The repetition rate
for each table can be changed, overriding the
default value.A conditional warning is generated if an illegal repetition rate is defined.
“Expert” and “Standard” Modes
Standard Mode will calculate related fields
and table pointers (e.g., checksums) for the
user without having to worry,but an Expert
Mode is also provided to allow the user to set
these to illegal conditions for test conditions
as described above.
New Advanced Video and
Audio Elementary Stream
Analysis and Display – ES
Analyzer (Option MTS3FIN)
This application brings to MTS300 not only the
ability to actually view the moving picture from
within a PES stream, but also to carry out a
whole range of sophisticated new tests on the
lower layers of an elementary stream within a
transport multiplex.This gives added confidence when analyzing streams because
encoder performance can be verified right
down to slice and block layer together with
motion vectors (see Figures 1 and 2).
Display and analysis of GOP, Picture, Slices
and Macroblock layer
Picture quality analysis including Quantizer
Scale distribution, motion vector graphs, macroblock and picture-size plots
DCT Analysis and display
Teletext analysis (PES and VBI)
Closed Caption Analysis to EIA 608,708, 746
DVB Subtitle analysis and display over picture
Analysis of MPEG-2 audio to provide plots of
allocation bits, scalefactor grouping and SCFSI
against sub bands
Audio analysis of MPEG-2 audio to provide plots
of allocation bits, scalefactor grouping and
SCFSI against sub bands
Audio analysis of Dolby Digital (AC-3),AAC,
AdiFF and ADTS
Regression test report generator
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