Forum Discussion

Dave9's avatar
Dave9
Contributor III
4 years ago

This is what good signals look like

There are so many examples of bad signals posted here that I thought it would be helpful to show what good signals look like. This is my modem after 20 days of uptime. Almost 3 weeks. My downstream is basically perfect, always hitting 900+ Mbps at any time when node congestion wouldn't be an issue (signals and node congestion are unrelated). My upstream consistently hits 35 Mbps. The only thing in the logs is a DRW violation about once every 3 days which would cause a momentary upstream glitch at worst. It took 3 techs to get my connection stabilized (one to remove old equipment and filters, one to replace cable from the pole to the house, and one to fix an amplifier on the pole). But now that they've fixed everything, I couldn't be happier with the quality of my connection. Notice how I have basically zero uncorrectables even after 3 weeks. That's what a good connection looks like.

Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
5 Locked QAM256 807000000 Hz 9.5 dBmV 43.9 dB 63 0
1 Locked QAM256 783000000 Hz 10.0 dBmV 44.1 dB 23 0
2 Locked QAM256 789000000 Hz 10.2 dBmV 44.3 dB 2 0
3 Locked QAM256 795000000 Hz 9.7 dBmV 44.0 dB 2 0
4 Locked QAM256 801000000 Hz 9.8 dBmV 44.1 dB 48 0
6 Locked QAM256 813000000 Hz 9.3 dBmV 43.7 dB 41 0
7 Locked QAM256 819000000 Hz 9.3 dBmV 43.6 dB 2 0
8 Locked QAM256 825000000 Hz 8.8 dBmV 43.5 dB 2 0
9 Locked QAM256 831000000 Hz 8.9 dBmV 43.5 dB 6 0
10 Locked QAM256 837000000 Hz 8.7 dBmV 43.3 dB 3 0
11 Locked QAM256 843000000 Hz 8.6 dBmV 43.2 dB 3 0
12 Locked QAM256 849000000 Hz 8.8 dBmV 43.4 dB 13 0
13 Locked QAM256 855000000 Hz 8.5 dBmV 43.2 dB 16 0
14 Locked QAM256 861000000 Hz 8.4 dBmV 43.2 dB 11 0
15 Locked QAM256 867000000 Hz 8.2 dBmV 42.9 dB 3 0
16 Locked QAM256 873000000 Hz 8.0 dBmV 42.8 dB 5 0
33 Locked QAM256 357000000 Hz 7.9 dBmV 44.6 dB 5 0
34 Locked QAM256 363000000 Hz 7.9 dBmV 45.1 dB 11 0
35 Locked QAM256 369000000 Hz 8.0 dBmV 45.1 dB 3 0
36 Locked QAM256 375000000 Hz 8.1 dBmV 45.1 dB 48 0
37 Locked QAM256 381000000 Hz 8.1 dBmV 45.0 dB 57 0
38 Locked QAM256 387000000 Hz 8.2 dBmV 44.9 dB 43 0
39 Locked QAM256 393000000 Hz 8.4 dBmV 45.0 dB 3 0
40 Locked QAM256 399000000 Hz 8.3 dBmV 45.1 dB 7 0
41 Locked QAM256 405000000 Hz 8.5 dBmV 44.9 dB 4 0
42 Locked QAM256 411000000 Hz 8.6 dBmV 44.8 dB 15 0
43 Locked QAM256 417000000 Hz 8.6 dBmV 45.1 dB 21 0
44 Locked QAM256 423000000 Hz 8.8 dBmV 45.0 dB 34 0
45 Locked QAM256 429000000 Hz 8.8 dBmV 45.0 dB 32 0
46 Locked QAM256 435000000 Hz 8.9 dBmV 45.0 dB 22 0
47 Locked QAM256 441000000 Hz 8.8 dBmV 44.9 dB 3 0
48 Locked QAM256 447000000 Hz 8.7 dBmV 44.8 dB 3 0
159 Locked Other 300000000 Hz 7.5 dBmV 43.2 dB 2377524673 2

Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 2 Locked SC-QAM Upstream 23500000 Hz 6400000 Hz 38.0 dBmV
2 1 Locked SC-QAM Upstream 16900000 Hz 6400000 Hz 38.0 dBmV
3 3 Locked SC-QAM Upstream 29900000 Hz 6400000 Hz 39.0 dBmV
4 4 Locked SC-QAM Upstream 36300000 Hz 6400000 Hz 39.0 dBmV
Status
Up Time 20 days 05h:54m:35s.00

4 Replies

  • Thank you for posting. I apologize that it took three techs to work out the issues, but I am happy that you are happy with the results of there work.

    Mike J.
    Cox Support Forums Moderator
  • bm's avatar
    bm
    New Contributor

    well this is what im getting after 2 tech visits  a modem swap and partial line replacement

     

  • bm's avatar
    bm
    New Contributor

    blow up of my downstream

  • bm's avatar
    bm
    New Contributor

    can getting tons of No Ranging Response received - T3 time-out  US profile assignment change

    CM-STATUS message sent. Event Type Code: 16  CM-STATUS message sent. Event Type Code: 24;

    3 no ranging responses between 430 pm yesterday and 7 am today 4 event code 24 2 event code 16  and 5 profile assignment changes