@jem101 Thanks for that explanation, very useful.
The QAM on the log above and my logs show QAM 256? that seems good if I"m following?
While you're at it what about the BQM - might as well complete the lesson!
Assuming the spikes are really bad, as latency is really high. If that's correct the lower the average (blue) the better and the smoother the better?
bryansmithsnr wrote:@jem101 Thanks for that explanation, very useful.
The QAM on the log above and my logs show QAM 256? that seems good if I"m following?
While you're at it what about the BQM - might as well complete the lesson!
Assuming the spikes are really bad, as latency is really high. If that's correct the lower the average (blue) the better and the smoother the better?
The downstream channels run at a much higher frequency than the upstream ones, as a general rule, the higher the frequency the more data you can 'pack' into it which translates to a faster speed if you like.
The downstream runs at 256 QAM which, as a test for the reader, is how many bits per symbol?
I don't want to be greedy so I'll let someone else do a write up of how the BQM works, how to interpret it and what is does and doesn't say about your connection 😃
But yes, the intermittent spikes are not uncommon, it's a sign of very short term congestion - in general, the lower the green, yellow and blue sections are and the flatter they are, the better.
John
@Jem101
"256 QAM which, as a test for the reader, is how many bits per symbol"
8
Using your explanation, If Qam 32 was 5, Qam64= 6, Qam128=7, Qam 256=8
