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How DOCSIS PNM Works and Why You Need It

By Rick Yuzzi | January 9th, 2019 |Categories: Diagnostics, PreEqualization Analyzer, DOCSIS pre-equalization, correlation groups, proactive network maintenance, PNM, In Channel Frequency Response, ICFR, Main Tap Compression, Micro Reflections, Group Delay

Diagnostics tools on a DOCSIS network have traditionally been part of a reactive, break-fix methodology, where the operator is notified about issues in their plant AFTER service for subscribers have been impacted. In fact, it is often complaints [...]

DOCSIS Codewords and their Importance in Monitoring RF Performance

By Rick Yuzzi | December 6th, 2018 |Categories: DOCSIS, Codeword Errors, Diagnostics, Monitoring

Codewords are a key feature and an important check on data transmission in DOCSIS networks. They are are often able to recreate bad bits of data corrupted by linear distortions and noise in the cable plant if the corruption is not too bad (a [...]

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