Not applicable

SB6141 Dropping

I have my own SB6141 arris modem that keeps dropping. I think my downstream power level might be too high, but I'm not sure if I'm reading everything right. If it is, I'm not sure how to get it back down. Any help would be appreciated. Had a tech come out a couple weeks ago and said my signal wasn't the best but after doing some things said it was great. However I'm still having drops. Thanks for your help. 

DownstreamBonding Channel Value
Channel ID10 11 12 
Frequency531000000 Hz 537000000 Hz 543000000 Hz 549000000 Hz 483000000 Hz 489000000 Hz 495000000 Hz 501000000 Hz 
Signal to Noise Ratio38 dB 39 dB 39 dB 39 dB 38 dB 38 dB 38 dB 39 dB 
Downstream ModulationQAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
10 dBmV  10 dBmV  10 dBmV  10 dBmV  10 dBmV  10 dBmV  10 dBmV  10 dBmV  

 

UpstreamBonding Channel Value
Channel ID
Frequency24200000 Hz 37000000 Hz 30600000 Hz 19400000 Hz 
Ranging Service ID2507 2507 2507 2507 
Symbol Rate5.120 Msym/sec 5.120 Msym/sec 5.120 Msym/sec 2.560 Msym/sec 
Power Level42 dBmV 43 dBmV 43 dBmV 42 dBmV 
Upstream Modulation[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[2] 16QAM
 
Ranging StatusSuccess Success Success Success 

 

 

14 REPLIES 14
Highlighted
Expert

Re: SB6141 Dropping

Copy and paste the Whole signal, page, need to see the correcteds

 Paste the error log page as well.

 What's your zip code?

 

+10dBmv  is about the highest  I'd want to see the DS power

Not applicable

Re: SB6141 Dropping

78254. The forum and TWC aren't being very functional for me. So if this gets posted several times I apologize. 

 

DownstreamBonding Channel Value
Channel ID10 12 17 
Frequency531000000 Hz 537000000 Hz 549000000 Hz 579000000 Hz 483000000 Hz 489000000 Hz 495000000 Hz 501000000 Hz 
Signal to Noise Ratio39 dB 39 dB 39 dB 38 dB 38 dB 38 dB 39 dB 39 dB 
Downstream ModulationQAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
10 dBmV  10 dBmV  9 dBmV  9 dBmV  10 dBmV  10 dBmV  10 dBmV  10 dBmV  

 

UpstreamBonding Channel Value
Channel ID
Frequency24200000 Hz 37000000 Hz 30600000 Hz 19400000 Hz 
Ranging Service ID2507 2507 2507 2507 
Symbol Rate5.120 Msym/sec 5.120 Msym/sec 5.120 Msym/sec 2.560 Msym/sec 
Power Level42 dBmV 43 dBmV 43 dBmV 42 dBmV 
Upstream Modulation[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[2] 16QAM
 
Ranging StatusSuccess Success Success Success 

 

Signal Stats (Codewords)Bonding Channel Value
Channel ID10 12 17 
Total Unerrored Codewords16361726484 16360843583 16306647634 16306649795 16360816500 16360818726 16360819141 16360820074 
Total Correctable Codewords11 12 93 91 70 22 
Total Uncorrectable Codewords1416 1412 2983 2956 1494 1470 652 1489 
Signal Stats (Codewords)Bonding Channel ValueSignal Stats (Codewords)Bonding Channel Val
Expert

Re: SB6141 Dropping

since it dropped ch 11, that already tells me there's a noise ingress problem as well as the uneven correcteds/uncorrecteds between channels.

Bet there'sa at least one "DS partial service" error in the log.

 543 mHz is Tv ch 26... You also have a 30, 31 and 32 there( 567, 573 & 579) mHz  and your 579 also has higher than the rest uncorrected.

This isn't a modem problem, something is corroded or loose or there's open splitter ports, Modem should be on the first 2 way if you have a cable box and no splitters if intermittent only.

 

Not applicable

Re: SB6141 Dropping

Aug 01 2017 13:01:133-CriticalR02.0No Ranging Response received - T3 time-out;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 16:08:246-NoticeI401.0TLV-11 - unrecognized OID;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 16:08:245-WarningZ00.0MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 16:08:025-WarningU102.0TCS Partial Service;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 16:08:006-NoticeI401.0TLV-11 - unrecognized OID;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 16:08:005-WarningZ00.0MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:176-NoticeN/ACable Modem Reboot due to power reset ;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 14:15:466-NoticeI401.0TLV-11 - unrecognized OID;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 14:15:465-WarningZ00.0MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 14:15:245-WarningU102.0TCS Partial Service;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 14:15:226-NoticeI401.0TLV-11 - unrecognized OID;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jul 28 2017 14:15:225-WarningZ00.0MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:17:10:89:37:29;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:176-NoticeN/ACable Modem Reboot due to power reset ;CM-MAC=84:61:a0:7d:91:2d;CMTS-MAC=00:00:00:00:00:00;CM-
Not applicable

Re: SB6141 Dropping

I'll take a look around and tighten things up. But I only have Cable through TWC so I don't believe or see anything coming off a splitter. Outside in the box it looks to be connected really snug and nothing in the way. My cord was a little pinched inside and loose but I'll tighten it up with a wrench and/or get a new coaxial cable. Thank you very much. 

Expert

Re: SB6141 Dropping

+10 dBmv usually indicates no splitters.

 Make sure the back side of wallplates are tight as well, they need to be a tad more than finger tight.

 

This could be a chewed up line in tree branches or on the pole tap off block.

 

You have 3 really strong Tv channels per TV fool...

http://www.tvfool.com/?option=com_wrapper&Itemid=29&q=id%3de6a43639ed30b2

 

Not applicable

Re: SB6141 Dropping

Will do. I was unaware that tv channels can interfere. I've changed the coaxial cable and tightened. I will try for a day and see what happens. Thank you. Will check wall plates as well. 

Not applicable

Re: SB6141 Dropping

After changing the cable. 

DownstreamBonding Channel Value
Channel ID10 11 12 
Frequency531000000 Hz 537000000 Hz 543000000 Hz 549000000 Hz 483000000 Hz 489000000 Hz 495000000 Hz 501000000 Hz 
Signal to Noise Ratio39 dB 39 dB 39 dB 39 dB 37 dB 38 dB 38 dB 38 dB 
Downstream ModulationQAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 QAM256 
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
8 dBmV  7 dBmV  7 dBmV  7 dBmV  8 dBmV  8 dBmV  8 dBmV  8 dBmV  

 

UpstreamBonding Channel Value
Channel ID
Frequency24200000 Hz 37000000 Hz 30600000 Hz 19400000 Hz 
Ranging Service ID1352 1352 1352 1352 
Symbol Rate5.120 Msym/sec 5.120 Msym/sec 5.120 Msym/sec 2.560 Msym/sec 
Power Level42 dBmV 43 dBmV 43 dBmV 42 dBmV 
Upstream Modulation[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[2] 16QAM
 
Ranging StatusSuccess Success Success Success 

 

Signal Stats (Codewords)Bonding Channel Value
Channel ID10 11 12 
Total Unerrored Codewords14089374 13232176 13223994 13240363 13214759 13213289 13216066 13215028 
Total Correctable Codewords12 12 18 
Total Uncorrectable Codewords1281 1397 1396 1395 1550 1408 1607 1452 
Expert

Re: SB6141 Dropping

I don't like seeing the DS levels change like that... Was temperature different outside by more than 20 degrees? Or is the new cable a lot longer or rg59 instead of rg 6...?

See if the DS drop of 2 dB has made a difference  +8 should be a bit more reliable than the previous +10 dBm you had

 

Are you sure there's a straight line from outside to the modem and not an amplifier inhouse, your comment of wall plate"S" makes me wonder if there are others wired to an amp...(all that needs to be disconnected from the coaxial path from the grounding block to the modem.

Your last startup has awfull good to uncorrected counts, repost the page again without resetting the modem, need to see what it looks like with a few hours on it.

 The 6141's do display around 500 right at startup