Participant

Re: Intermittent T4 errors SB6141

TWC sent out a higher level tech who tested all my cables & even replaced a couple more connectors. He showed me the signal levels (which I know doesn't cover all frequencies) and said that's all they would do until I installed a TWC modem. If that failed then they could look further. I had access to another SB6141 so I installed it a couple of days later. With this modem I'm only getting one t4 a day instead of three. Firmware version is the same but the hardware is V7.0 vs. 8.0 in the previous one. 

Don't know why the t4 difference but we'll probably just live with it. My son hates it because it interrupts his online gaming. I really don't want to pay for a TWC modem.

Expert

Re: Intermittent T4 errors SB6141

copy and paste the latest signal level page... 

problem is the old design of 8x4 modems, they only have a 96 mHz acceptance bandwidth and also can't handle ingress on skipped channels.... It should work better with all 8 channels close together. TWC leased modems don't fix everything but force TWC/ spectrum to get the coaxial issues fixed.

 

Participant

Re: Intermittent T4 errors SB6141

Sorry it's been so long since I looked at this. Here's the signal page.

 

Downstream Bonding Channel Value
Channel ID10 11 12 13 14 15 16 
Frequency507000000 Hz 513000000 Hz 519000000 Hz 525000000 Hz 531000000 Hz 537000000 Hz 543000000 Hz 549000000 Hz 
Signal to Noise Ratio37 dB 37 dB 38 dB 38 dB 37 dB 37 dB 36 dB 37 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
0 dBmV  0 dBmV  0 dBmV  0 dBmV  0 dBmV  0 dBmV  -1 dBmV  -1 dBmV  

 

Upstream Bonding Channel Value
Channel ID
Frequency37000000 Hz 19400000 Hz 30600000 Hz 24200000 Hz 
Ranging Service ID3745 3745 3745 3745 
Symbol Rate2.560 Msym/sec 2.560 Msym/sec 5.120 Msym/sec 5.120 Msym/sec 
Power Level44 dBmV 43 dBmV 44 dBmV 43 dBmV 
Upstream Modulation[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[2] 16QAM
 
[3] QPSK
[1] 16QAM
[2] 64QAM
 
[3] QPSK
[1] 16QAM
[2] 64QAM
 
Ranging StatusSuccess Success Success Success 

 

Signal Stats (Codewords)Bonding Channel Value
Channel ID10 11 12 13 14 15 16 
Total Unerrored Codewords555393451 554559918 554568543 554576729 554550862 554553347 554552383 554554586 
Total Correctable Codewords17 13 50 14 
Total Uncorrectable Codewords482 533 560 554 668 585 578 617 
Expert

Re: Intermittent T4 errors SB6141

Doesn't look all that bad... Has your problem cleared up?

 

Participant

Re: Intermittent T4 errors SB6141

Still get one, sometimes 2 , T4 timeouts a day.

 

Proven Sharer

Re: Intermittent T4 errors SB6141

Just a hunch based on your comment about interference with TV channels carried at 105 and 153 MHz on the cable/DTA:  Do you live near a commercial radio broadcasting tower that has any FM stations in the 103 to 108 MHz range?  Or near a similar radio tower that is used by a utility company or business?  If so, ingress [leakage] interference could be causing the problem with your TV channels, and could also create problems for your internet modem. 

Participant

Re: Intermittent T4 errors SB6141

No broadcasting nearby and all TV channel issues have been gone for the last few weeks.

 

 

Proven Sharer

Re: Intermittent T4 errors SB6141

Sounds like your latest tech visit was successful.  If you are satisfied, you can mark this as "SOLVED" in the pull-down OPTIONS menu on the right side of this window.  Stop back again if the problems return.

Participant

Re: Intermittent T4 errors SB6141

Had some late night downtime for maintenance about a week ago . Don't know what they did but no T4 errors or modem reboots since then. And the all cable work they did here seems to have solved all the TV issues

Spectrum Employee

Re: Intermittent T4 errors SB6141


@redsho1999 wrote:

Had some late night downtime for maintenance about a week ago . Don't know what they did but no T4 errors or modem reboots since then. And the all cable work they did here seems to have solved all the TV issues


Proof that node sweeps are important right there!

Definitely sounds to me like a maintenace OSP (outside plant, street & neighborhood-wide) issue was present and 3rd shift fixed it.  In general, maintenance doesn't take services offline unless they have something significant to do (like swapping a LE, an amp, a node, or replacing some damaged hardline).

My postings on this site are my own, off-the-clock, and don’t necessarily represent TWC’s/Charter's strategies or opinions.