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Author Topic: Found item on noise data  (Read 5801 times)


  • Kitizen
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  • Posts: 3173
Found item on noise data
« on: September 24, 2014, 01:30:39 PM »

Just poodling I found an item on noise data averaging. Here is a link just in case it might be of interest to anyone.


  • Reg Member
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  • Posts: 727
Re: Found item on noise data
« Reply #1 on: September 24, 2014, 05:20:25 PM »

I'm wondering what is the point of the average described,  in relation to xDSL   ? 
Most instrumentation will measure the RMS of Gaussian noise accurately, and any other waveform will be in error. If this waveform error is constant you can compare results at different times, or average them OK, BUT averaging line noise and a switching PSU's noise say, is rather a waste of time.
Or am I missing something ?


  • Kitizen
  • ****
  • Posts: 4817
Re: Found item on noise data
« Reply #2 on: October 11, 2014, 10:11:27 PM »

One of stats called FEC's from my observation's is a great way into seeing physical noise on the line if your interleaved, more noise higher FEC's less noise lower FEC's.

You will find most people with medium FEC errors are on the longer line whilst others with very high FEC errors the noise is being introduced onto the line by internal or rare exterior devices.

So yes you could use the stats FEC count as the noise data averaging.