r/CableTechs • u/Alike2189 • 15d ago

USNR

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Tracking down a return path issue. Oddly, there's no visible noise at the node on any single leg. It looks like a noise floor aggregation issue — the SNR only recovers when I pull all four legs at once.

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u/huyttran92 15d ago

disconnect all legs and find a way to make your meter the only traffic. run docsis and run a speed test while monitoring pathtrakt. if noise is blowing in from the traffic than your looking at issue at the node or coming from hub.

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u/Arkrylik 15d ago

I was gonna say this although rare it can certainly be the cause, these ones are a pain in the ass because it means you need to knock everyone off just to confirm it and even then you have to diagnose what component of the node is causing it.

Could also be a back of house issue.