Question Are these cable modem levels good?

[dwd999]

Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables UnCorrectables 1 Locked QAM 256 25 117000000 Hz -0.5 dBmV 40.9 dB 0 0 2 Locked QAM 256 26 123000000 Hz -0.7 dBmV 40.3 dB 0 0 3 Locked QAM 256 27 129000000 Hz -1.2 dBmV 40.3 dB 0 0 4 Locked QAM 256 29 141000000 Hz -0.7 dBmV 40.3 dB 0 0 5 Locked QAM 256 37 189000000 Hz 0.4 dBmV 40.9 dB 12 0 6 Locked QAM 256 41 213000000 Hz 0.7 dBmV 39.9 dB 0 0 7 Locked QAM 256 42 219000000 Hz 0.7 dBmV 39.9 dB 0 0 8 Locked QAM 256 43 225000000 Hz 0.7 dBmV 40.4 dB 0 0 9 Locked QAM 256 44 231000000 Hz 0.9 dBmV 40.4 dB 0 0 10 Locked QAM 256 45 237000000 Hz 1.0 dBmV 41.1 dB 0 0 11 Locked QAM 256 46 243000000 Hz 1.0 dBmV 40.4 dB 0 0 12 Locked QAM 256 47 249000000 Hz 1.2 dBmV 40.4 dB 0 0 13 Locked QAM 256 48 255000000 Hz 1.4 dBmV 39.9 dB 0 0 14 Locked QAM 256 1 735000000 Hz 3.9 dBmV 38.6 dB 0 0 15 Locked QAM 256 2 741000000 Hz 3.5 dBmV 38.9 dB 0 0 16 Locked QAM 256 3 747000000 Hz 3.5 dBmV 38.6 dB 0 0 17 Locked QAM 256 4 753000000 Hz 3.5 dBmV 38.9 dB 0 0 18 Locked QAM 256 5 759000000 Hz 3.4 dBmV 38.6 dB 0 0 19 Locked QAM 256 6 765000000 Hz 3.5 dBmV 38.9 dB 0 0 20 Locked QAM 256 7 771000000 Hz 3.9 dBmV 38.6 dB 0 0 21 Locked QAM 256 8 777000000 Hz 4.0 dBmV 38.9 dB 0 0 22 Locked QAM 256 9 783000000 Hz 4.0 dBmV 38.9 dB 0 0 23 Locked QAM 256 10 789000000 Hz 3.5 dBmV 38.6 dB 0 1 24 Locked QAM 256 11 795000000 Hz 3.2 dBmV 38.9 dB 0 0 25 Locked QAM 256 12 801000000 Hz 3.0 dBmV 38.6 dB 0 0 26 Locked QAM 256 13 807000000 Hz 3.0 dBmV 38.6 dB 0 0 27 Locked QAM 256 14 813000000 Hz 3.0 dBmV 38.6 dB 0 0 28 Locked QAM 256 15 819000000 Hz 3.5 dBmV 38.6 dB 0 0 29 Locked QAM 256 16 825000000 Hz 3.7 dBmV 38.9 dB 0 0 30 Locked QAM 256 21 855000000 Hz 3.5 dBmV 38.2 dB 0 0 31 Locked QAM 256 23 867000000 Hz 3.7 dBmV 38.9 dB 0 0 32 Locked QAM 256 24 873000000 Hz 3.5 dBmV 38.6 dB 0 0

 

[Ralston18]

Arris modem - correct?

Table data is taken from the Downstream Bonded Channels section - correct?

FYI - Referencing the following linkl:

https://arris.my.salesforce-sites.c...ed to be,in relation to the noise on the line.

SNR is good. > 30dB

"If QAM64, SNR should be 23.5 dB or greater (from the link).

Downstream Bonded Channels (from the link):

"In the Downstream Bonded Channels section, verify Power levels are within the acceptable range of - 15 dBmV to + 15 dBmV for each downstream channel."

Also good.

 

[dwd999]

Arris modem - correct?

Table data is taken from the Downstream Bonded Channels section - correct?

FYI - Referencing the following linkl:

https://arris.my.salesforce-sites.com/consumers/articles/General_FAQs/S33-Cable-Signal-Levels#:~:text=The three signal levels that need to be,in relation to the noise on the line.

SNR is good. > 30dB

"If QAM64, SNR should be 23.5 dB or greater (from the link).

Downstream Bonded Channels (from the link):

"In the Downstream Bonded Channels section, verify Power levels are within the acceptable range of - 15 dBmV to + 15 dBmV for each downstream channel."

Also good.

Thanks for the Power level info. Actually its a Netgear CM700. I'm concerned since I've been having problems where the modem works fine when hooked up to one computer but if I hook it up to a router the internet signal goes on and off; tried it with 2 different routers, same problem. I may just bite the bullet next week even if I have to pay to have the cable company service people come over and check the line. Thanks again.