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Noise Margin dropping from 6.1 to 4.6

SE
Rising Star
Posts: 72
Thanks: 1
Fixes: 1
Registered: 19-08-2013

Noise Margin dropping from 6.1 to 4.6

8. Noise margin: 6.0 / 4.6

9. Line attenuation: 26.2 / 20.2

10. Signal attenuation:26.1 / 19.7

A few days ago the noise margin was 6.1 and now it's down to 4.6

my speed with the new hub one is about the same at 49 d 8.5 u as before the drop, though with the old modem and router set from PN it was 51 d 9.75 u

 

is there a problem and am i right in thinking a high noise margin is better as it's the signal over the line noise ?

 

Thanks