Community Forum

Uncorrectable codewords and gigabit connection

SkyhawkDriver
Regular Contributor

Uncorrectable codewords and gigabit connection

Using a Arris T25 eMTA (on the list of supported gigabit eMTAs) and see varying numbers of uncorrectable codewords on the linear channels.  They tend to "move around" and are not on the same channel(s) consistently. 

 

Given this is a gigabit connection using DOCSIS 3.1, do the QAM channels even matter?  And how do I figure out if the ODFM channel is OK?  Here is what I can see in the logs.

Downstream OFDM

  FFT Type Channel Width(MHz) # of Active Subcarriers First Active Subcarrier(MHz) Last Active Subcarrier(MHz) Average RxMER(dB)
Pilot PLC Data
Downstream 2 4K 82 1640 673 754 46 40 40
SkyhawkDriver
Regular Contributor

Re: Uncorrectable codewords and gigabit connection

Anyone?