Not receiving DOCSIS 3.1
Up until last week my ARRIS SB8200 was receiving DOCSIS 3.1, indicated by the blue lights on the front of the modem. Directly wired in I was pulling 900-940 mbps down. Those lights are now lit green,...
Forum Discussion
Right now, the coaxial is running 50 ft from the wall, directly to the modem. Currently no splitters or barrels between. I can definitely try a new coaxial and could change out the wall plate. I posted my signal levels, but not entirely sure what I am looking at there.
Right now your signal levels are really bad. You are not locking half your channels, and the OFDM has no SNR lock. Also you upstream is too high. Should be below 50dB. Can you connect direct to the wall (minus the 50') and post what your signal levels are then?
Hey Wider, here are my numbers with the modem connected directly to the coax line inside the wall.
Try swapping the barrel connected at the wall plate, if no changes take place, then a service technician call is in order.
Hey Darkatt, I swapped that barrel connector last night with no change. Posted some new numbers above with the modem wired directly to the coax line, inside the wall, without the wall plate / barrel connector in-between.
Looking like I will have to get a tech out. Appreciate all of the knowledge from you and Wider.
It helped, but didn't totally resolve, the high upstream issue. It didn't fix the problem in-between 357Mhz and 447Mhz. Could you describe the what is found at the demarc, or where the coaxial attaches to electrical ground? If that is locked or you live in a apartment of some sorts, then a tech. is required. Good luck.
