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billybadassweav's avatar
billybadassweav
New Contributor
5 years ago

Dynamic Range Window Violation

Hello,

I am having issues getting someone to help fix a problem with my internet connection.  I receive a Dynamic Range Window Violation in my modem log every few minutes and this greatly affects my internet staying connected and VERY SLOW speeds.  I have Cox Gigablast 940MB and speeds are near 50 to 60MB constantly and dropped connection.  Modem is brand new and worked find until we switched from 300MB plan to 940MB plan.  Here is my error log details from modem event log.  This problem has been reported many times and it appears that a "data tech" can be sent to the home to investigate the issue and fix the problem. Please help!

Event Log

The table below contains the log of events that the SB8200 has detected. This log can be important to the service provider to help diagnose and correct problems, if any should occur.

Date Time Event ID Event Level Description
01/27/2020 21:04 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:52 67061600 6 "DS profile assignment change. DS Chan ID: 32; Previous Profile: 1 2; New Profile: 1 2 3.;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation"
01/27/2020 20:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation"
01/27/2020 20:52 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation"
01/27/2020 20:52 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation"
01/27/2020 20:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:52 2436694061 5 "Dynamic Range Window violation"
01/27/2020 20:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:52 67061600 6 "DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2.;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:51 73040100 6 "TLV-11 - unrecognized OID;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:51 68000300 5 "DHCP WARNING - Non-critical field invalid in response ;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:01 2436694066 6 "Honoring MDD; IP provisioning mode = IPv4"
01/01/1970 00:00 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:7e:95:40:25:ce;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
01/27/2020 20:50 2436694044 3 "Resetting the cable modem due to docsDevResetNow"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=18:9c:27:f9:b9:bd;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"

2 Replies

  • Heather_H's avatar
    Heather_H
    New Contributor

    I have this exact same problem occurring with my less than year old Netgear CM1000 and I was told last night by Cox chat that it is a modem issue. I'm going to replace the modem and if I continue to have problems, I am going to have a big problem with Cox. 

    • JonathanJ's avatar
      JonathanJ
      Former Moderator
      @Heather H

      Before swapping out the modem we like to check the signal level. Please email my team your full-service address and full name to cox.help@cox.com.

      Jonathan J
      Cox Moderator