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Anon737799
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9 Messages

Friday, November 5th, 2021 2:51 PM

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Noise on incoming line ? Random Disconnects

Hi.  I've been seeing a lot of noise on our incoming line.  I've removed my modem and router, took them OUTSIDE and hooked them up to the Incoming line to eliminate the house wiring.  (A few years ago I had the same issue).

I'm getting numerous modem resets all day long and a massive amount of timeouts.

I'm seeing 45db , 48db and higher of noise with my modem hooked up OUTSIDE the house to the Line coming out of the ground to the box (NO SPLITTERS ETC). This seems excessive. In addition, Streampix hasn't worked in years (can get into any menu / on demand etc) and several of the lower numbered channels are pixelated.

Can Xfinity do some kind of "Line Check" to determine where this noise is coming from.  Last time the tech replaced some things in the box on the property line.  (FIlters / capacitors ???  I can't remember).  Thanks.

Question

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Updated 

4 years ago

 • Edited

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EG

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110.3K Messages

4 years ago

@Anon737799 wrote: "I'm seeing 54db and higher of noise with my modem hooked up OUTSIDE the house to the Line coming out of the ground to the box (NO SPLITTERS ETC)."

That sounds like the upstream power level figure, not the SNR figure. Please post all of the signal status figures (the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers).

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Anon737799

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9 Messages

   I'm not at home to post current log.  The SNR varies and is (as of this morning) it was 49db.

Sorry for the typo.  IT should have read 45 db and above,  NOT 54db.  And yes, Downstream SNR has varied up to 54, but currently is 49db.   I'll try to edit that in the post above.

(edited)

4 years ago

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Anon737799

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9 Messages

If it helps: From my notes this AM.   Downstream SNR (1-32) varied from    - 0.30 dbmv to  -2.70 dBmv and 40.37 - 48.25dB  SNR- pretty much as they normally have been recently.

 

Upstream 54.00  dBmv

As a side note>  Even though I have the firmware update, I'm still using the SB6190 (Puma Chipset), which I'll be replacing this week).  It's been doing ok up until now, but perhaps it could be the culprit.... or contributing possibly..

(edited)

4 years ago

0

EG

Expert

 • 

110.3K Messages

4 years ago

The upstream power is too high / out of spec. It should not be that high directly off of the drop from the street / pole. The drop coax line itself may need to be replaced. Or the problem may be further up the line somewhere in the neighborhood lines.

You'll need to get a tech out to investigate / determine what is needed. Good luck !

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Anon737799

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9 Messages

4 years ago

 Thanks very much for the reply. Much appreciated. If it helps further,  This is what is just ran.  It seems to vary from day to day. This is accurate as of 10 min ago. Upstream power seems high to me also.

Status

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables
1 Locked 256QAM 9 489.00 MHz -2.40 dBmV 38.98 dB 544 3657
2 Locked 256QAM 10 495.00 MHz -2.30 dBmV 38.98 dB 269 3013
3 Locked 256QAM 11 507.00 MHz -2.10 dBmV 38.61 dB 1321 4776
4 Locked 256QAM 12 513.00 MHz -2.00 dBmV 38.61 dB 479 4152
5 Locked 256QAM 13 519.00 MHz -1.60 dBmV 38.98 dB 268 2043
6 Locked 256QAM 14 525.00 MHz -1.50 dBmV 38.98 dB 503 3931
7 Locked 256QAM 15 531.00 MHz -1.80 dBmV 38.98 dB 546 2725
8 Locked 256QAM 16 537.00 MHz -1.60 dBmV 38.61 dB 599 2860
9 Locked 256QAM 17 543.00 MHz -1.70 dBmV 38.61 dB 286 2238
10 Locked 256QAM 18 555.00 MHz -2.30 dBmV 38.61 dB 466 4009
11 Locked 256QAM 19 561.00 MHz -2.10 dBmV 38.61 dB 395 3210
12 Locked 256QAM 20 567.00 MHz -1.70 dBmV 38.98 dB 182 2069
13 Locked 256QAM 21 573.00 MHz -1.30 dBmV 38.61 dB 644 3639
14 Locked 256QAM 22 579.00 MHz -0.50 dBmV 38.98 dB 152 1021
15 Locked 256QAM 23 585.00 MHz -0.40 dBmV 38.98 dB 455 2852
16 Locked 256QAM 24 591.00 MHz -0.20 dBmV 38.98 dB 354 2937
17 Locked 256QAM 26 597.00 MHz -0.10 dBmV 38.98 dB 422 4015
18 Locked 256QAM 27 603.00 MHz -0.30 dBmV 40.37 dB 269 2141
19 Locked 256QAM 28 609.00 MHz -0.70 dBmV 38.98 dB 348 2028
20 Locked 256QAM 29 615.00 MHz -1.00 dBmV 38.98 dB 233 1960
21 Locked 256QAM 30 621.00 MHz -1.30 dBmV 38.98 dB 658 2704
22 Locked 256QAM 31 627.00 MHz -0.50 dBmV 38.61 dB 476 1646
23 Locked 256QAM 32 633.00 MHz -0.30 dBmV 38.61 dB 292 2018
24 Locked 256QAM 33 639.00 MHz 0.20 dBmV 38.61 dB 277 2045
25 Locked 256QAM 34 645.00 MHz 0.70 dBmV 39.90 dB 54 2031
26 Locked 256QAM 35 651.00 MHz 0.80 dBmV 39.50 dB 37 1957
27 Locked 256QAM 36 657.00 MHz 1.20 dBmV 39.90 dB 45 1918
28 Locked 256QAM 37 663.00 MHz 0.80 dBmV 39.50 dB 90 1986
29 Locked 256QAM 38 669.00 MHz 0.70 dBmV 39.50 dB 38 1316
30 Locked 256QAM 39 675.00 MHz 0.70 dBmV 39.50 dB 38 1329
31 Locked 256QAM 40 681.00 MHz 0.50 dBmV 39.50 dB 76 1259
32 Locked 256QAM 41 687.00 MHz -0.20 dBmV 39.90 dB 66 1954

Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 37 5120 kSym/s 36.50 MHz 51.50 dBmV
2 Locked ATDMA 39 5120 kSym/s 23.70 MHz 52.00 dBmV
3 Locked ATDMA 38 5120 kSym/s 30.10 MHz 51.50 dBmV


Current System Time: Fri Nov 05 15:47:00 2021

(edited)

0

0

EG

Expert

 • 

110.3K Messages

4 years ago

It's at the top limit ! There is an intermittent line / connection impairment going on somewhere. Further posting of the stats will not help. You have to get *boots on the ground* !

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