Forum Discussion

fjama13's avatar
fjama13
On our wavelength
7 months ago

Significant number of Pre/Post-RS errors and T3/T4 timeouts

Hi,

I have a significant number of Pre/Post-RS errors on the downstream and T3/T4 timeouts on the upstream. I have tried rebooting the Hub 5, making sure the coax cable is tight and resetting the Hub 5. I had an engineer visit on the 8th of June but the issue reoccurred shortly after the visit.

Any ideas? I seriously do think that the cab I am connected to has issues as this has been a pattern over the last 12-18 months. Please see the stats from the Hub 5 in the replies below

 

  • fjama13's avatar
    fjama13
    On our wavelength
    Cable Modem StatusItem Status TypeChannel Overview Downstream Upstream
    Cable Modem StatusOnlineDOCSIS 3.0
    Primary downstream channelLockedSC-QAM
    DOCSIS 3.0 channels325
    DOCSIS 3.1 channels11
     

    3.0 Downstream channels

    Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
    13310000002.640QAM 25625
    21390000004.840QAM 2561
    31630000004.440QAM 2564
    41710000004.240QAM 2565
    51950000003.740QAM 2568
    62030000003.340QAM 2569
    7227000000340QAM 25612
    8235000000340QAM 25613
    93230000002.441QAM 25624
    103390000002.740QAM 25626
    113470000002.640QAM 25627
    123550000002.741QAM 25628
    133630000002.541QAM 25629
    143710000002.240QAM 25630
    153790000002.240QAM 25631
    163870000001.741QAM 25632
    173950000001.240QAM 25633
    184030000000.940QAM 25634
    194110000000.940QAM 25635
    204190000001.141QAM 25636
    214270000000.741QAM 25637
    224350000001.341QAM 25638
    234430000001.541QAM 25639
    244510000001.341QAM 25640
    254590000000.841QAM 25641
    264670000000.441QAM 25642
    274750000000.541QAM 25643
    284830000000.441QAM 25644
    294910000000.241QAM 25645
    304990000000.441QAM 25646
    315070000000.341QAM 25647
    325150000000.141QAM 25648
     
    • fjama13's avatar
      fjama13
      On our wavelength

      3.0 Downstream channels

      Channel

      Locked Status

      RxMER (dB)

      Pre RS Errors

      Post RS Errors

      1

      Locked

      40

      333

      12

      2

      Locked

      40

      282

      18

      3

      Locked

      40

      268

      234

      4

      Locked

      40

      295

      4

      5

      Locked

      40

      245

      5

      6

      Locked

      40

      255

      8

      7

      Locked

      40

      276

      56

      8

      Locked

      40

      249

      99

      9

      Locked

      41

      309

      3

      10

      Locked

      40

      286

      5

      11

      Locked

      40

      300

      45

      12

      Locked

      41

      283

      97

      13

      Locked

      41

      269

      47

      14

      Locked

      40

      270

      68

      15

      Locked

      40

      263

      33

      16

      Locked

      41

      316

      43

      17

      Locked

      40

      294

      88

      18

      Locked

      40

      246

      97

      19

      Locked

      40

      240

      45

      20

      Locked

      41

      246

      72

      21

      Locked

      41

      257

      49

      22

      Locked

      41

      244

      47

      23

      Locked

      41

      266

      64

      24

      Locked

      41

      1777

      16

      25

      Locked

      41

      236

      56

      26

      Locked

      41

      225

      43

      27

      Locked

      41

      202

      45

      28

      Locked

      41

      239

      75

      29

      Locked

      41

      225

      22

      30

      Locked

      41

      249

      11

      31

      Locked

      41

      237

      46

      32

      Locked

      41

      240

      88

      3.1 Downstream channels

      Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
      159944K1840QAM 40961108

      3.1 Downstream channels

      Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)
      159Locked39-5.0293440767612965
      • fjama13's avatar
        fjama13
        On our wavelength

        3.0 Upstream channels

        Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
        04960000045.85120QAM 641
        143100000455120QAM 642
        236600000455120QAM 643
        330100000445120QAM 644
        423600000445120QAM 645

        3.0 Upstream channels

        Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
        0ATDMA00120
        1ATDMA0070
        2ATDMA00180
        3ATDMA0080
        4ATDMA00402

        3.1 Upstream channels

        Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
        61039.52KQAM 256

        3.1 Upstream channels

        Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
        6OFDMA20074000000231