Atec Acterna-DTS300 - Manual (Page 10)

9
Real-Time Transport Stream Recording
and Play-Out
With the Generator, users can record and play bursty or
synchronous transport streams at speeds up to 214 Mbps,
providing stable, reproducible data sources for equipment
and network validation.
When the Generator records a transport stream, it saves the
original timing parameters with the stream for accurate
post-analysis and playback. It also filters PIDs, allowing
users to post-process specific portions of the transport
stream, such as CA, EPG, or proprietary data services. Large
transport streams can be recorded to disk while smaller
streams are saved to DRAM for rates greater than 90 Mbps.
The Generator processes any type of bitstream, including
elementary streams, packetized elementary streams, and
transport streams.
The Packet Editor application, provided with the Generator,
allows users to analyze or modify data on a packet-by-packet
basis and provides access to each bit in the transport packet
header and payload.
When playing out transport streams, the Generator contin-
uously loops files for long duration testing and performs
real-time packet resizing with support for 204- and 208-byte
packets. The Generator includes a built-in input clock for
data receivers and provides transport stream statistics to
help the user identify a file prior to play.
DTS-300 Hardware Options
Dual Analysis
The DTS-300 Dual Analysis option allows users to simulta-
neously analyze and compare the input and output streams
of a system or network. Unique in the industry, this capability
eliminates the cost and hassle of using two analyzers for
simultaneous analysis. With dual analysis on a single platform,
a user can also simultaneously compare multiple points
within a transmission system for rapid troubleshooting and
problem localization.
Dual Play
The DTS-300 Dual Play option, the only tool that allows
users to effectively test frequency hopping on set-top boxes
and digital TV, plays two different streams with independent
PSIP/SI tables to two different carriers from the same unit.
This type of testing greatly increases set-top box and digital
TV reliability and eliminates the need to purchase two
pieces of generation equipment to perform a single test.
DVB QPSK Receiver
The DTS-300 DVB QPSK interface option allows users to
record and analyze MPEG-2-based satellite signals, elimi-
nating the need for field-service personnel to carry additional
QPSK receiving equipment. This built-in interface demodu-
lates the signal to baseband and outputs the transport
stream as a DVB SPI signal that is then input to the Analyzer
or the Generator for analysis or recording. In addition, a
QPSK application gives users control over carrier frequency,
polarity, symbol rate, and LNB voltages as well as status
information such as signal strength, signal lock, signal-to-
noise ratio, and error status.
DHEI Interface
This built-in interface option to the DTS-300 eliminates the
hassle and expense of carrying additional DHEI receiving
equipment into the field. It converts a DHEI signal to DVB
ASI, which is then input to the Analyzer or the Generator
for analysis or recording.
Record View
Play View
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