@Alex4161 your signal levels and codeword data isn't too bad at all. From the posted data:
Downstream Docsis 3.0 channels (1 to 32)
Signal levels: Good. There is the usual high frequency roll off at the top end which is typical, not desired but typical on the Rogers network. That roll off will disappear over time.
Signal to Noise Ratios: Good. No real complaints. You can see a slight dip at the high end due to the high frequency roll off.
QAM: Good, running 256 for all channels, which is the highest you will see for DOCSIS 3.0
Downstream DOCSIS 3.0 Codewords.
For the most part, ok. I was concerned after your previous post that you might have had broadband noise covering the whole 5 to 1002 Mhz range, but, nope, the high Correctable Codewords and Uncorrected Codewords are isolated occurrences, at the low or high end. The low end covers the start of the first DOCSIS 3.0 channel and lower part of the DOCSIS 3.1 OFDM channel, and from what I think, probably affects the OFDM channel numbers, as seen in the Index 33 OFDM data. I suspect that there's noise ingress at the lower end of the Downstream band but, it doesn't appear to be causing an major problems. Same thing occurs at Index 30 but to a much lesser extent. All of the rest are fine.
Upstream DOCSIS 3.0
Three upstream channels running, sometimes you will see three channel, sometimes four channels, just depends on the CMTS and neighbourhood node that you're connected to. The upstream signal levels are well within spec.
Downstream DOCSIS 3.1 (Index 33)
I'm assuming that 350 Mhz is the start of the OFDM sub-carriers. It doesn't line up with the OFDM sub-carrier start point or mid-point for the CODA-4582 modems, so Rogers is probably customizing the sub-carrier frequency ranges for these modems. In any event, not a big deal, just an observation. The signal level is good, as the Signal to Noise Ratio. There is an amount of Correctable and Uncorrected Codewords. The Uncorrected Codewords at this point is only 44, basically negligible. My guess is that whatever is creating the noise at the low end of the Downstream band is causing the Correctable and Uncorrected Codewords. Not a big deal with those small uncorrected numbers.
Overall, not too shabby. I wouldn't expect any issues with posted signal data.
@Alex4161 What stands out is the number of uncorrectable codeword errors on the D3.1 OFDM channel, especially if the uncorrectable codeword error count continues to steadily increase. That number really should be close to zero. With too many uncorrectable errors, your modem will drop down to using DOCSIS 3.0.
I would call in to Rogers about this for further investigation. Do not reboot your modem. Try to get this escalated to a Level 2 tech for further investigation with the modem in its current state.
