kyorishin's profile

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5 Messages

Wed, Jul 1, 2020 10:00 AM

comcast cant see my modem Arris sb8200 should i be concern?

coming from a 300mb plan i recently updated to a gigabit plan and the comcast diag said i should upgrade my modem

 

original modem was Motorola SB6141

 

just picked up an Arris SB8200

106029107_696895581093511_275000061068749455_n.jpg Atronix CMCDT2106T

tried to do the activation on xfinity.com/activate but it could not see it, was able to see the old modem fine. not sure if it would make a differece but from the wall inlet  i original had this splitter in line to modem when i also had TV but have since removed from account and only have internet now

 

called in to a rep and they manually updated my modem on my account for me and got the internet working but in the app (xfinity my account) and on the website it doesnt see my modem as connected.

should i be concern? am i missing out on anything if my modem isnt showing in their system?

 

this is my status the day after getting it working

Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 513000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK  
Security Enabled BPI+
DOCSIS Network Access Enabled Allowed  

 

 
Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
9 Locked QAM256 513000000 Hz -2.9 dBmV 42.9 dB 2 0
5 Locked QAM256 483000000 Hz -2.9 dBmV 42.9 dB 6 0
6 Locked QAM256 489000000 Hz -3.3 dBmV 42.7 dB 13 0
7 Locked QAM256 495000000 Hz -3.6 dBmV 42.5 dB 9 0
8 Locked QAM256 507000000 Hz -3.4 dBmV 42.7 dB 5 0
10 Locked QAM256 519000000 Hz -3.1 dBmV 42.9 dB 6 0
11 Locked QAM256 525000000 Hz -3.4 dBmV 42.5 dB 5 0
12 Locked QAM256 531000000 Hz -3.4 dBmV 42.6 dB 1 0
13 Locked QAM256 543000000 Hz -2.7 dBmV 43.0 dB 0 0
14 Locked QAM256 549000000 Hz -2.8 dBmV 42.8 dB 1 0
15 Locked QAM256 555000000 Hz -3.4 dBmV 42.7 dB 1 0
16 Locked QAM256 561000000 Hz -3.3 dBmV 42.7 dB 0 0
17 Locked QAM256 567000000 Hz -3.4 dBmV 42.7 dB 0 0
18 Locked QAM256 573000000 Hz -3.4 dBmV 42.8 dB 0 0
19 Locked QAM256 579000000 Hz -2.9 dBmV 42.8 dB 0 0
20 Locked QAM256 585000000 Hz -2.8 dBmV 42.8 dB 0 0
21 Locked QAM256 591000000 Hz -2.9 dBmV 42.8 dB 0 0
22 Locked QAM256 597000000 Hz -3.3 dBmV 42.5 dB 0 0
23 Locked QAM256 603000000 Hz -3.1 dBmV 42.3 dB 0 0
24 Locked QAM256 609000000 Hz -2.9 dBmV 42.6 dB 0 0
25 Locked QAM256 615000000 Hz -2.8 dBmV 42.6 dB 0 0
26 Locked QAM256 621000000 Hz -2.8 dBmV 42.5 dB 0 0
27 Locked QAM256 627000000 Hz -2.8 dBmV 42.5 dB 0 0
28 Locked QAM256 633000000 Hz -3.0 dBmV 42.5 dB 0 0
29 Locked QAM256 639000000 Hz -3.1 dBmV 42.5 dB 0 0
30 Locked QAM256 645000000 Hz -2.7 dBmV 42.7 dB 0 0
31 Locked QAM256 651000000 Hz -2.3 dBmV 42.7 dB 0 0
32 Locked QAM256 657000000 Hz -2.5 dBmV 42.8 dB 0 0
33 Locked QAM256 663000000 Hz -2.7 dBmV 42.6 dB 0 0
34 Locked QAM256 669000000 Hz -3.2 dBmV 42.4 dB 0 0
35 Locked QAM256 675000000 Hz -3.1 dBmV 41.1 dB 0 0
36 Locked QAM256 681000000 Hz -3.0 dBmV 42.4 dB 0 0
159 Locked Other 722000000 Hz -1.7 dBmV 41.2 dB 946 0
 
Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 4 Locked SC-QAM Upstream 23700000 Hz 6400000 Hz 53.0 dBmV
2 1 Locked SC-QAM Upstream 30100000 Hz 6400000 Hz 53.0 dBmV
3 2 Locked SC-QAM Upstream 36500000 Hz 6400000 Hz 53.0 dBmV
4 3 Locked SC-QAM Upstream 17300000 Hz 6400000 Hz 53.0 dBmV


Responses

EG

Expert

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86.2K Messages

10 m ago

The upstream power is too high / out of spec. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.

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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