TRADE NEWS: Agilent Technologies' New DOCSIS Protocol Analyzer Speeds Development of New Cable TV Systems; DPA Analyzes Both Upstream and Downstream DOCSIS signals.
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Agilent Technologies This article needs sources or references that appear in reliable, third-party publications. Alone, primary sources and sources affiliated with the subject of this article are not sufficient for an accurate encyclopedia article. Inc. (NYSE NYSE
See: New York Stock Exchange :A) today introduced a commercially available DOCSIS (Data Over Cable Service Interface Specification) A cable modem standard from the CableLabs research consortium (www.cablelabs.com), which provides equipment certification for interoperability. Protocol Analyzer (DPA DPA - Data Protection Act ) that enables functional analysis of both upstream and downstream data-over-cable service interface specification (DOCSIS) signals. The analyzer provides equipment manufacturers and service providers with unprecedented visibility into DOCSIS protocol implementations, speeding and simplifying development, interoperability testing and certification of equipment and services for delivering high-speed Internet and voice services over cable TV systems.
The Agilent E7333A DOCSIS Protocol Analyzer analyzes the upstream and downstream protocols by acquiring the signals and decoding media access control (MAC) messages within a wide RF dynamic range. The new product also provides a highly versatile triggering subsystem for physical layer measurements, and has applications in R&D testing, conformance testing, manufacturing, and system troubleshooting and monitoring.
The E7333A currently supports DOCSIS 1.0 and 1.1 specifications and is expected to have an option for supporting EURO DOCSIS in the future. It offers up to 16 MB of downstream and 8 MB of upstream acquisition memory. Data flowing into these memories can be filtered by packet identification (PID (1) (Process IDentifier) A temporary number assigned by the operating system to a process or service.
(2) (Proportional-Integral-Derivative) The most common control methodology in process control. ) in the downstream or by interval usage code (IUC IUC Information Unit for Conventions
IUC Intrauterine Contraception
IUC Interval Usage Code (DOCSIS)
IUC Interview Under Caution
IUC Interconnect User Charge
IUC Immediate Unit Commander
IUC Initial User Capability ) or service identification (SID) in the upstream. Flexible trigger generation can provide analog triggering signals for physical layer measurement instrumentation such as vector signal analyzers and spectrum analyzers. Engineers can configure these analog triggers to be coincident with specific IUC pre- and post-burst events, and monitor two upstream IUC selective physical layer measurements (SNR See signal-to-noise ratio.
SNR - signal-to-noise ratio , time and frequency offset).
"The E7333A provides advanced protocol and physical layer testing for DOCSIS cable modems and CMTS (Cable Modem Termination System) A computerized device that enables cable modems to send and receive packets over the Internet. It inserts IP packets from the Internet into MPEG frames and transmits them to the cable modems via an RF signal. systems," said Peter Johnson, DOCSIS business manager for Agilent's Worldwide Custom Solutions Operation. "Engineers can now perform efficient and complete investigations using both the physical layer tools and the MAC layer analysis capabilities built into the second-generation DPA."
The E7333A is controlled with a PC and will operate in the Agilent E1371A/B A/B Airborne
A/B Afterburner (jet engines)
A/B Air Blast
A/B Air Bus
A/B Afterburning DOCSIS Design Verification Test System as a direct replacement for the first-generation DOCSIS Downstream Protocol Analyzer or with the PC alone. When used with the PC alone, optional software products to perform MAC and PHY-MAC conformance testing can be utilized to perform the following analysis:
-- downstream frame analysis on both the MPEG and MAC frames, including MAC message decoding with search capabilities on SYNC, MAP, UCD, RNGRSP, REGRSP and UCCREQ messages; -- upstream burst analysis with message decoding and search capabilities on RNGREQ, REGREQ and packet messages; -- downstream MAC Timing analysis for Sync jitter and errors; -- DOCSIS 1.1 MAC and MPEG protocol decodes and error checking; and -- synchronized upstream and downstream timing analysis.
U.S. Pricing and Availability
The Agilent E7333A DOCSIS Protocol Analyzer is priced starting at $39,950 and is available now.
More information on the E7333A DOCSIS Protocol Analyzer is available at www.agilent.com/comms/DOCSIS.
About Agilent Technologies
Agilent Technologies Inc. (NYSE:A) is a global technology leader in communications, electronics and life sciences. The company's 37,000 employees serve customers in more than 120 countries. Agilent had net revenue of $8.4 billion in fiscal year 2001. Information about Agilent is available on the Web at www.agilent.com.
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