MPEG Transport Stream
Monitor
MTM400
Flexible and Upgradeable
The MTM400 provides a flexible solution with an upgrade path,
including diagnostic monitoring features that enable customers to
build a cost-effective monitoring system to suit their individual
requirements. Diagnostic capability can be added to the key
monitoring points where transport streams are manipulated while
extended confidence monitoring probes can be installed throughout
the network:
- Triggered recording enables
problems to be captured and analyzed in greater depth using
offline analysis tools such as the Tektronix MPEG Test System
Standalone Software*1
- PSI/SI/PSIP/ARIB SI analysis and
repetition rate graphing allows broadcasters to determine that the
system information is present and correct in the transport stream
- Template testing checks a number
of key parameters to ensure that the transport stream has been
constructed as the broadcaster intended. These parameters include
the Transport Stream ID and Network ID, the number of programs in
the multiplex, that each program has all of its components (Video,
Audio, Data, Teletext, Subtitles) and Conditional Access (CA)
status
- Bit rate testing determines
whether PIDs, programs, services or user-defined groups of PIDs
are within user-definable limits to ensure correct multiplex
operation. Tektronixproprietary PID variability test gives
indication of PID bit rate variation to assess effects of
statistical multiplexing
- In-depth PCR analysis with
graphical results views enables timing and jitter measurements to
be made to ensure correct operation of the network
- Service logging enables
verification of service level agreements to ensure that
contractual obligations are met
- Offline analysis software
applications for in-depth deferred time analysis of streams
captured using the MTM400 gives Tektronix the most powerful MPEG
monitoring diagnostics available in the world today*2
*1 Separate data sheet is
available.
*2 MTS400 Series MPEG Test System offline software tools are
available for use with the MTM400. These are stand-alone software
applications intended to run on the MLM1000 control PC. Separate
data sheet is available.
Applications
Terrestrial Distribution
Terrestrial broadcasters need to verify accuracy of content at
unmanned transmitter sites. They need to check for errors,
troubleshoot problems and capture errors for offline investigation.
- The MTM400 is designed for 24/7
unattended operation
- Low-cost, extended-confidence
monitoring enables widespread deployment
- Centralized networked operation
minimizes staffing requirements
- Remote stream capture means
engineers do not have to visit the site
- COFDM and 8VSB RF terrestrial
interfaces allow monitoring at the transmitter site or remote
off-air monitoring
Contribution and
Primary Distribution
Large networks carry compressed video from many points to many
points over limited bandwidth. Content is distributed at high data
rates with potential loss of revenue if video content is not
delivered per agreement. Right content at right place at right time
is key.
- MTM400’s low cost, extended
confidence monitoring enables widespread deployment
- High bit rate capability up to
155 Mb/s*3 for monitoring transport streams carried
over GbE/ATM/OC3/SDH
- Bit rate testing and logging
enables bandwidth usage to be monitored and Service Level
Agreements to be verified
*3 Maximum transport stream bit
rate is dependent on transport stream content and depth of analysis
being performed. Depth of stream analysis is handled gracefully if
SI/PSIP max content is exceeded to ensure critical measurements
continue to be performed.
Cable Headend
Cable companies need to verify content accuracy at multiple,
unmanned headend sites as operations are centralized. Budgets are
tight and resources are limited.
- The MTM400 is a cost-effective
solution which can be used for unattended operation for unmanned
regional headends
- Network monitoring units linked
to central operations center reduces manpower requirements
- Comprehensive coverage of QAM
Annex A/B/C RF interfaces allows cost-effective, multi-channel,
multi-layer monitoring
- Selection of PLL and AFC
characteristics of the QAM interface enables constellation
analysis on signals that are too poor for normal operation
DTH or
Network Operator Satellite Uplink Monitoring
Large numbers of channels may be monitored by limited personnel. A
fault on a single signal could result in great customer
dissatisfaction and churn. Errors in the stream or incorrect content
must be identified before large numbers of viewers are affected.
Operators need to monitor both before and after modulation.
- The cost-effective MTM400
solution provides low cost per stream
- QPSK (L Band) and Turbo 8PSK RF
interfaces allow a stream to be monitored both at the ASI/SMPTE310M
interface and the RF interface by switching between the two
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