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Modem reset a few times a week

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New Poster

Modem reset a few times a week

All,

 

I started to get more anoyed with the modem disconnects and reboots. I have the following modem signal information after a fresh reboot. Are those ok, is it something else?

 

I see a lot of R02.0 Critical errors:

 

May 04 2020 14:10:03 3-Critical R02.0 No Ranging Response received - T3 time-out;

 

Downstream Bonding Channel Value
Channel ID 13  14  15  16 
Frequency 597000000 Hz  603000000 Hz  609000000 Hz  615000000 Hz 
Signal to Noise Ratio 35 dB  35 dB  36 dB  36 dB 
Downstream Modulation 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   -8 dBmV  

 

Upstream Bonding Channel Value
Channel ID
Frequency 23000000 Hz  29400000 Hz  35800000 Hz 
Ranging Service ID 13779  13779  13779 
Symbol Rate 5.120 Msym/sec  5.120 Msym/sec  5.120 Msym/sec 
Power Level 54 dBmV  54 dBmV  54 dBmV 
Upstream Modulation [2] QPSK
[1] 32QAM
[3] 64QAM
 
[2] QPSK
[1] 32QAM
[3] 64QAM
 
[2] QPSK
[1] 32QAM
[3] 64QAM
 
Ranging Status Success  Success  Success 

 

Signal Status (Codewords) Bonding Channel Value
Channel ID 13  14  15  16 
Total Unerrored Codewords 268774946  268774458  268774627  268774546 
Total Correctable Codewords 57  36  45  39 
Total Uncorrectable Codewords 964  1463  1287  1375 
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Diamond Problem Solver

Re: Modem reset a few times a week

All your upstream channels are too high and out of spec, post the rest of your downstream signals. The ones you posted are too low or close to being out of spec. Both will contribute to a modem resetting

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New Poster

Re: Modem reset a few times a week

Tahnks for your reply.

 

What do I need to check? the cable connections, or the modem is going bad?Are are the normal values for downstream/upstream? 

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Diamond Problem Solver

Re: Modem reset a few times a week

You need your downstream levels to compare. But the upstream has to drop at least 4-5db. Generally, it’s your cable connections but it could also be an outside drop or tap issue

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Expert

Re: Modem reset a few times a week

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.



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