50M Post RS Errors - Page 7

Jon22 · 16-04-2015, 13:30

I've put the 10dB attenuator on, it's lowered the downstream power levels to between 1 and 2 dBmV. Be interesting to see if anything else going to be done.

Jon22 · 21-04-2015, 19:13

So it's been a week since whatever was done to bring the SNR up a bit yet I'm still getting the Post RS errors. Not as many as before though.

Downstream
DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 299000000 267000000 275000000 283000000 291000000 307000000 315000000 323000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Locked Locked Locked Locked Locked Locked Locked
Channel ID 13 9 10 11 12 14 15 16
Modulation 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM
Symbol Rate (Msym/sec) 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level (dBmV) 0.95 0.35 0.49 0.74 0.81 1.18 1.20 1.24
RxMER (dB) 36.61 36.61 36.39 36.39 36.84 36.84 36.84 36.84
Pre RS Errors 34372 32607 40905 28075 29114 27782 28638 28708
Post RS Errors 15235 5064 15724 11469 15712 16117 17230 17388

General Maximus · 21-04-2015, 19:35

The power levels and snr are excellent, reset the rs errors counter and see what happens.

Jon22 · 21-04-2015, 20:17

Quote:

Originally Posted by General Maximus

The power levels and snr are excellent, reset the rs errors counter and see what happens.

I reset them yesterday. Seem to get a burst of them after a few hours.

Sephiroth · 21-04-2015, 20:34

Has the modem reset at all during that period? Or have you rebooted it?

Jon22 · 21-04-2015, 21:15

Quote:

Originally Posted by Sephiroth

Has the modem reset at all during that period? Or have you rebooted it?

Last time I rebooted the modem was after I put the attenuator on. There's been 1 T3 timeout since.

Sephiroth · 21-04-2015, 21:44

So the post RS errors were cleared after the reset and no reset has occurred since?

Jon22 · 22-04-2015, 00:25

Quote:

Originally Posted by Sephiroth

So the post RS errors were cleared after the reset and no reset has occurred since?

Yep, reset the counters after and also reset them yesterday. Haven't rebooted the modem since last week. Gone up a bit more since the last stat post.

Downstream
DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 299000000 267000000 275000000 283000000 291000000 307000000 315000000 323000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Locked Locked Locked Locked Locked Locked Locked
Channel ID 13 9 10 11 12 14 15 16
Modulation 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM
Symbol Rate (Msym/sec) 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level (dBmV) 1.98 1.53 1.49 1.61 1.66 2.29 2.51 2.47
RxMER (dB) 36.61 36.61 36.39 36.39 36.84 36.84 36.84 36.84
Pre RS Errors 42452 42428 49518 35967 36538 35003 36033 35696
Post RS Errors 17977 7663 18163 14121 18401 19061 20287 20107

Ignitionnet · 22-04-2015, 00:51

Mmm.

If these are causing a service problem and the same thing isn't being seen with the rest of the people on your tap I reckon you could do with being moved to another port in the cabinet.

If that doesn't sort it might need a repull - new cable between you and cabinet.

Jon22 · 22-04-2015, 15:12

Been sending more PM's back and to, to the person I'm dealing with on the VM forum. Looks as though they are going to arrange for another Superhub to be sent out. Don't know if it'll help but would at least rule it out. If not, I'll have to somehow see if they can arrange to do what Ignitionnet has suggested. Not quite sure how I'm going to approach that.

Sephiroth · 22-04-2015, 18:05

When/if they send you another tech, then the tap change can be made. Important to get all this in your file notes. Ask the Forum Team member to do that.

Jon22 · 23-04-2015, 13:48

Quote:

Originally Posted by Sephiroth

When/if they send you another tech, then the tap change can be made. Important to get all this in your file notes. Ask the Forum Team member to do that.

Ok, thanks. I presume when the tech was last out, he just moved it on the current tap point, rather than moving to another? The forum team member is waiting to hear back from an email she has sent to the tech who last came out, for an update. If she doesn't hear anything then she's going to arrange for a new Superhub to be sent out tomorrow. I don't know if it'll help though. Had a couple of dropouts overnight.

23/04/2015 03:25:19 GMT 23/04/2015 03:25:19 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 03:25:19 GMT 23/04/2015 03:25:19 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 03:25:19 GMT 23/04/2015 03:25:19 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 03:25:19 GMT 23/04/2015 03:25:19 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 03:25:19 GMT 23/04/2015 03:25:19 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 03:25:19 GMT 23/04/2015 03:25:19 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 03:25:19 GMT 23/04/2015 03:25:19 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 03:25:18 GMT 23/04/2015 03:25:18 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 03:25:14 GMT 23/04/2015 03:25:14 GMT Critical (3) 84000500 SYNC Timing Synchronization failure - Loss of Sync
23/04/2015 03:25:13 GMT 23/04/2015 03:25:13 GMT Critical (3) 84000500 SYNC Timing Synchronization failure - Loss of Sync
23/04/2015 02:09:01 GMT 23/04/2015 02:09:01 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 02:09:01 GMT 23/04/2015 02:09:01 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 02:09:01 GMT 23/04/2015 02:09:01 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 02:09:01 GMT 23/04/2015 02:09:01 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 02:09:01 GMT 23/04/2015 02:09:01 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 02:09:01 GMT 23/04/2015 02:09:01 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 02:09:01 GMT 23/04/2015 02:09:01 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 02:09:01 GMT 23/04/2015 02:09:01 GMT Warning (5) 84020200 Lost MDD Timeout
23/04/2015 02:08:57 GMT 23/04/2015 02:08:57 GMT Critical (3) 84000500 SYNC Timing Synchronization failure - Loss of Sync
23/04/2015 02:08:57 GMT 23/04/2015 02:08:57 GMT Critical (3) 84000500 SYNC Timing Synchronization failure - Loss of Sync

DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8
Frequency (Hz) 299000000 267000000 275000000 283000000 291000000 307000000 315000000 323000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock) Locked Locked Locked Locked Locked Locked Locked Locked
Channel ID 13 9 10 11 12 14 15 16
Modulation 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM 256QAM
Symbol Rate (Msym/sec) 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000 6.952000
Interleave Depth I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17 I=12
J=17
Power Level (dBmV) 0.95 0.06 0.21 0.49 0.63 1.12 1.19 1.26
RxMER (dB) 36.17 35.97 35.97 36.17 36.61 36.61 36.84 36.61
Pre RS Errors 414754 367639 374310 347346 441633 435656 438585 466876
Post RS Errors 206202 161448 169767 159677 249880 246223 252402 280655

Jon22 · 24-04-2015, 18:38

Been a change of plan, it's been arranged for a Principal Technician to come on Tuesday. So without telling him how to do his job, would it be right for him to consider:

1. Moving to a different tap point
2. Check the condition of the coax cable and consider a repull if necessary
3. Maybe change the Superhub

jb66 · 24-04-2015, 18:42

Is this fault service affecting?

Jon22 · 24-04-2015, 18:49

Quote:

Originally Posted by jb66

Is this fault service affecting?

Well see that's the thing, I always seem to get full speed. Its not like I'm pushing for something to be done, the forum team member sent me a PM on Wednesday asking how things had been. I replied back that the SNR seemed to be ok but I was still getting the post rs errors. She sent an email to who she thought was the engineer who attended to get an update (turns out it was someone else), and they replied back, saying to book an engineer again. I'm just going along with what they are saying.