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CM1100 - 3 Day Old, keeps disconnection with high upstream power, using Spectrum
I think I posted on wrong forum- re posting here: Spectrum Ticket: 33699396 Just got my modem 3 days ago and set it up. Had a Spectrum tech come out yesterday and took out extra s...
The 58dbmv would cause issues on the line.
Spectrum would need to recheck the line. They fight checking lines.
I've actually had to rent one of their modems to prove to them it wasn't the "third party" device and get them to fix a line. Then once its fixed, going back to my own modem.
So a tech came today and checked everything from the pole drop to the modem line. Replaced pole connectors, the tech who came yesreday forgot to crimp a fitting smdh.
However, there is an issue with the modem too.
I still have my old modem so I hooked and rehooked it up to compare the 12 year old SBG6580 and the 3 day old CM1100.
Why is there an extra 2-3 dBmV on the CM1100? Is this normal or do I have a bad modem?
SBG6580:
| Channel | Lock Status | Modulation | Channel ID | Frequency | Power | SNR | Corrected | Uncorrectables |
| 1 | Locked | QAM256 | 1 | 615000000 Hz | 3.3 dBmV | 42.0 dB | 0 | 0 |
| 2 | Locked | QAM256 | 2 | 621000000 Hz | 3.3 dBmV | 42.5 dB | 0 | 0 |
| 3 | Locked | QAM256 | 3 | 627000000 Hz | 3.4 dBmV | 42.0 dB | 0 | 0 |
| 4 | Locked | QAM256 | 4 | 633000000 Hz | 2.9 dBmV | 41.9 dB | 0 | 0 |
| 5 | Locked | QAM256 | 5 | 639000000 Hz | 2.5 dBmV | 41.9 dB | 0 | 0 |
| 6 | Locked | QAM256 | 6 | 645000000 Hz | 2.9 dBmV | 42.0 dB | 0 | 0 |
| 7 | Locked | QAM256 | 7 | 651000000 Hz | 2.6 dBmV | 42.0 dB | 0 | 0 |
| 8 | Locked | QAM256 | 8 | 657000000 Hz | 2.2 dBmV | 41.4 dB | 0 | 0 |
| Channel | Lock Status | US Channel Type | Channel ID | Symbol Rate | Frequency | Power |
| 1 | Locked | ATDMA | 2 | 5120 Ksym/sec | 24000000 Hz | 47.0 dBmV |
| 2 | Locked | ATDMA | 1 | 5120 Ksym/sec | 17600000 Hz | 46.2 dBmV |
| 3 | Locked | ATDMA | 3 | 5120 Ksym/sec | 30400000 Hz | 47.7 dBmV |
| 4 | Locked | ATDMA | 4 | 5120 Ksym/sec | 36800000 Hz | 48.2 dBmV |
CM1100:
| Frequency start Value | |
| This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect. | |
|
Startup Procedure
| Procedure | Status | Comment |
| Acquire Downstream Channel | 759000000 Hz | Locked |
| Connectivity State | OK | Operational |
| Boot State | OK | Operational |
| Security | Enable | BPI+ |
| IP Provisioning Mode | Honor MDD | IPv4 only |
Downstream Bonded Channels
| Channel | Lock Status | Modulation | Channel ID | Frequency | Power | SNR / MER | Unerrored Codewords | Correctable Codewords | Uncorrectable Codewords |
| 1 | Locked | QAM256 | 25 | 759000000 Hz | 0.0 dBmV | 40.5 dB | 62683378 | 0 | 0 |
| 2 | Locked | QAM256 | 1 | 615000000 Hz | 2.1 dBmV | 43.3 dB | 61724613 | 0 | 0 |
| 3 | Locked | QAM256 | 2 | 621000000 Hz | 2.2 dBmV | 43.3 dB | 61727864 | 0 | 0 |
| 4 | Locked | QAM256 | 3 | 627000000 Hz | 2.0 dBmV | 43.2 dB | 61731617 | 0 | 0 |
| 5 | Locked | QAM256 | 4 | 633000000 Hz | 1.5 dBmV | 42.9 dB | 61734745 | 0 | 0 |
| 6 | Locked | QAM256 | 5 | 639000000 Hz | 1.6 dBmV | 43.1 dB | 61736552 | 0 | 0 |
| 7 | Locked | QAM256 | 6 | 645000000 Hz | 1.4 dBmV | 43.0 dB | 61741901 | 0 | 0 |
| 8 | Locked | QAM256 | 7 | 651000000 Hz | 1.2 dBmV | 42.7 dB | 61746046 | 0 | 0 |
| 9 | Locked | QAM256 | 8 | 657000000 Hz | 1.1 dBmV | 42.7 dB | 61749297 | 0 | 0 |
| 10 | Locked | QAM256 | 9 | 663000000 Hz | 0.9 dBmV | 42.4 dB | 61752859 | 0 | 0 |
| 11 | Locked | QAM256 | 10 | 669000000 Hz | 0.9 dBmV | 42.4 dB | 61756324 | 0 | 0 |
| 12 | Locked | QAM256 | 11 | 675000000 Hz | 0.5 dBmV | 41.6 dB | 61761621 | 0 | 0 |
| 13 | Locked | QAM256 | 12 | 681000000 Hz | 0.3 dBmV | 42.0 dB | 61764778 | 0 | 0 |
| 14 | Locked | QAM256 | 13 | 687000000 Hz | 0.6 dBmV | 41.6 dB | 61768533 | 0 | 0 |
| 15 | Locked | QAM256 | 14 | 693000000 Hz | 0.6 dBmV | 41.0 dB | 61773030 | 0 | 0 |
| 16 | Locked | QAM256 | 15 | 699000000 Hz | 0.3 dBmV | 40.6 dB | 61776696 | 0 | 0 |
| 17 | Locked | QAM256 | 16 | 705000000 Hz | 0.0 dBmV | 40.1 dB | 61778387 | 211 | 867 |
| 18 | Locked | QAM256 | 17 | 711000000 Hz | 0.4 dBmV | 39.8 dB | 61783098 | 118 | 494 |
| 19 | Locked | QAM256 | 18 | 717000000 Hz | 0.7 dBmV | 40.0 dB | 61787685 | 0 | 0 |
| 20 | Locked | QAM256 | 19 | 723000000 Hz | 0.1 dBmV | 40.3 dB | 61791148 | 0 | 0 |
| 21 | Locked | QAM256 | 20 | 729000000 Hz | -0.1 dBmV | 41.3 dB | 61794421 | 0 | 0 |
| 22 | Locked | QAM256 | 21 | 735000000 Hz | 0.1 dBmV | 42.2 dB | 61798302 | 0 | 0 |
| 23 | Locked | QAM256 | 22 | 741000000 Hz | 0.3 dBmV | 41.6 dB | 61802556 | 0 | 0 |
| 24 | Locked | QAM256 | 23 | 747000000 Hz | -0.2 dBmV | 40.7 dB | 61805961 | 0 | 0 |
| 25 | Locked | QAM256 | 24 | 753000000 Hz | -0.3 dBmV | 40.4 dB | 61810009 | 1 | 0 |
| 26 | Locked | QAM256 | 26 | 765000000 Hz | -0.1 dBmV | 40.6 dB | 61813549 | 0 | 0 |
| 27 | Locked | QAM256 | 27 | 771000000 Hz | -0.6 dBmV | 40.4 dB | 61817160 | 0 | 0 |
| 28 | Locked | QAM256 | 28 | 777000000 Hz | -1.3 dBmV | 40.4 dB | 61810387 | 3794 | 6724 |
| 29 | Locked | QAM256 | 29 | 783000000 Hz | -0.5 dBmV | 40.9 dB | 61820554 | 2265 | 1617 |
| 30 | Locked | QAM256 | 30 | 789000000 Hz | -0.2 dBmV | 40.9 dB | 61825204 | 0 | 0 |
| 31 | Locked | QAM256 | 31 | 795000000 Hz | -0.9 dBmV | 40.6 dB | 61827802 | 0 | 0 |
| 32 | Not Locked | Unknown | 0 | 0 Hz | 0.0 dBmV | 0.0 dB | 0 | 0 | 0 |
Upstream Bonded Channels
| Channel | Lock Status | Modulation | Channel ID | Frequency | Power |
| 1 | Locked | ATDMA | 1 | 17600000 Hz | 49.5 dBmV |
| 2 | Locked | ATDMA | 2 | 24000000 Hz | 50.5 dBmV |
| 3 | Locked | ATDMA | 3 | 30400000 Hz | 50.5 dBmV |
| 4 | Locked | ATDMA | 4 | 36800000 Hz | 51.0 dBmV |
| 5 | Not Locked | Unknown | 0 | 0 Hz | 0.0 dBmV |
| 6 | Not Locked | Unknown | 0 | 0 Hz | 0.0 dBmV |
| 7 | Not Locked | Unknown | 0 | 0 Hz | 0.0 dBmV |
| 8 | Not Locked | Unknown | 0 | 0 Hz | 0.0 dBmV |
Downstream OFDM Channels
| Channel | Lock Status | Modulation / Profile ID | Channel ID | Frequency | Power | SNR / MER | Active Subcarrier Number Range | Unerrored Codewords | Correctable Codewords | Uncorrectable Codewords |
| 1 | Locked | 0, 1, 2, 255 | 159 | 848000000 Hz | -1.0 dBmV | 39.5 dB | 1108 ~ 2987 | 161967520 | 111423613 | 0 |
| 2 | Not Locked | 0, 255 | 0 | 0 Hz | 5.5 dBmV | 0.0 dB | 0 ~ 4095 | 0 | 0 | 0 |
Upstream OFDMA Channels
| Channel | Lock Status | Modulation / Profile ID | Channel ID | Frequency | Power |
| 1 | Not Locked | Unknown | 0 | 0 Hz | 0 dBmV |
| 2 | Not Locked | Unknown | 0 | 0 Hz | 0 dBmV |
