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BeninAZ's avatar
BeninAZ
New Contributor
2 years ago

Orbi CBR750 Disconnecting

My Orbi CBR750 modem keeps disconnecting. When we were using the COX modem everything was fine. The Orbi was fine until this past weekend. No firmware update on the modem. No splitter on the line. 

My basic understanding of the Event Log codes show that it is something with the coax connection.

What else can I do besides changing the COAX?

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 381000000 Hz Locked
Connectivity State Ok Operational
Boot State Ok Operational
Security Enabled BPI+
IP Provisioning Mode Honor MDD honorMdd(4)
Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectable
1 Locked QAM 256 33 357000000 Hz 7.3 dBmV 38.9 dB 0 0
2 Locked QAM 256 34 363000000 Hz 7.4 dBmV 38.9 dB 0 0
3 Locked QAM 256 35 369000000 Hz 7.3 dBmV 38.9 dB 1 0
4 Locked QAM 256 36 375000000 Hz 7.3 dBmV 38.9 dB 0 0
5 Locked QAM 256 37 381000000 Hz 7.3 dBmV 38.9 dB 0 0
6 Locked QAM 256 38 387000000 Hz 7.3 dBmV 38.6 dB 0 0
7 Locked QAM 256 39 393000000 Hz 7.1 dBmV 38.6 dB 2 0
8 Locked QAM 256 40 399000000 Hz 6.8 dBmV 38.6 dB 0 0
9 Locked QAM 256 41 405000000 Hz 6.3 dBmV 38.6 dB 0 0
10 Locked QAM 256 42 411000000 Hz 5.8 dBmV 38.6 dB 0 0
11 Locked QAM 256 43 417000000 Hz 4.5 dBmV 37.6 dB 8 0
12 Locked QAM 256 44 423000000 Hz 1.5 dBmV 36.3 dB 86 60
13 Locked QAM 256 45 429000000 Hz -4.0 dBmV 33.3 dB 11303 22887
14 Locked QAM 256 46 435000000 Hz 5.8 dBmV 35.5 dB 0 0
15 Locked QAM 256 47 441000000 Hz 10.9 dBmV 38.9 dB 5 0
16 Locked QAM 256 48 447000000 Hz 11.8 dBmV 38.9 dB 7 0
17 Locked QAM 256 1 783000000 Hz 12.6 dBmV 38.6 dB 0 0
18 Locked QAM 256 2 789000000 Hz 12.4 dBmV 38.6 dB 0 0
19 Locked QAM 256 3 795000000 Hz 12.0 dBmV 37.6 dB 0 0
20 Locked QAM 256 4 801000000 Hz 12.0 dBmV 38.6 dB 0 0
21 Locked QAM 256 5 807000000 Hz 12.3 dBmV 38.6 dB 0 0
22 Locked QAM 256 6 813000000 Hz 12.5 dBmV 38.6 dB 0 0
23 Locked QAM 256 7 819000000 Hz 12.6 dBmV 38.9 dB 0 0
24 Locked QAM 256 8 825000000 Hz 12.8 dBmV 38.6 dB 0 0
25 Locked QAM 256 9 831000000 Hz 12.8 dBmV 38.6 dB 0 0
26 Locked QAM 256 10 837000000 Hz 12.8 dBmV 38.6 dB 0 0
27 Locked QAM 256 11 843000000 Hz 12.3 dBmV 37.6 dB 0 0
28 Locked QAM 256 12 849000000 Hz 11.5 dBmV 37.3 dB 0 0
29 Locked QAM 256 13 855000000 Hz 11.5 dBmV 37.6 dB 0 0
30 Locked QAM 256 14 861000000 Hz 12.1 dBmV 37.6 dB 0 0
31 Locked QAM 256 15 867000000 Hz 13.0 dBmV 38.6 dB 0 0
32 Locked QAM 256 16 873000000 Hz 13.1 dBmV 38.6 dB 0 0
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 6 2560 Ksym/sec 12900000 Hz 43.5 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 17700000 Hz 43.5 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 24100000 Hz 43.0 dBmV
4 Locked ATDMA 3 5120 Ksym/sec 30500000 Hz 44.5 dBmV
5 Locked ATDMA 4 5120 Ksym/sec 36900000 Hz 43.5 dBmV
6 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked N/A Unknown 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked N/A Unknown 0 Ksym/sec 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 3 159 300000000 Hz 9.9 dBmV 43.3 dB 2216~5975 0 0 0
2 Not Locked 0 0 0 Hz 0.0 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 0 0 0 Hz 0.0 dBmV
2 Not Locked 0 0 0 Hz 0.0 dBmV

Event Log

Time Priority Description
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:52 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:08:53 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:03 Notice (6) CM-STATUS message sent. Event Type Code: 2
Jan 09 2023 21:09:08 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:10 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:09:11 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:12 Notice (6) CM-STATUS message sent. Event Type Code: 2
Jan 09 2023 21:09:15 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:17 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:09:17 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:18 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:09:23 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:23 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:09:23 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:35 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:09:36 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:50 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jan 09 2023 21:09:51 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:53 Notice (6) CM-STATUS message sent. Event Type Code: 5
Jan 09 2023 21:09:54 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:55 Notice (6) CM-STATUS message sent. Event Type Code: 2
Jan 09 2023 21:09:57 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:09:59 Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Jan 09 2023 21:09:59 Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:10:01 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Time Not Established Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Time Not Established Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Time Not Established Critical (3) No Ranging Response received - T3 time-out
Time Not Established Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Time Not Established Critical (3) Unicast Ranging Received Abort Response - initializing MAC
Time Not Established Critical (3) SYNC Timing Synchronization failure - Loss of Sync
Jan 09 2023 21:12:24 Warning (5) MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Jan 09 2023 21:12:24 Notice (6) TLV-11 - unrecognized OID
Jan 09 2023 21:12:24 Critical (3) Config File Rejected due to Invalid or Unexpected TLV 11
Jan 09 2023 21:12:28 Warning (5) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value
Jan 09 2023 21:12:28 Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW
Jan 09 2023 21:12:28 Warning (5) RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW
Jan 09 2023 21:12:30 Critical (3) No Ranging Response received - T3 time-out
Jan 09 2023 21:12:38 Alert (2) CM Certificate Error
Jan 09 2023 21:12:42 Notice (6) CM-STATUS message sent. Event Type Code: 5

1 Reply

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  • WiderMouthOpen's avatar
    WiderMouthOpen
    Esteemed Contributor
    2 years ago

    The only thing that looks abnormal in the signal levels is some noise between 429-435Mhz which might be CDMA cellular interference/ingress. The logs show some errors with your channels losing sync and some T3/T4 errors. Do you have underground wiring from the street to the house? If so, could you describe it?