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Channel ID 48 - what is it? Why corrected?

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Channel ID 48 - what is it? Why corrected?

 

Hi,

 

I just got a new Arris SB8200 modem as a replacement of another SB8200.

 

I noticed that this one is showing corrected values (20) for channel ID 48. 

 

Anybody knows what this channel is / what it is there for? And do I need to worry about the 20 corrected values below?

 

Thanks.

 

 

 

 

Downstream Bonded Channels
Channel ID Lock Status Modulation Frequency Power SNR/MER Corrected Uncorrectables
25 Locked QAM256 699000000 Hz 3.9 dBmV 39.4 dB 0 0
1 Locked QAM256 513000000 Hz 2.4 dBmV 40.1 dB 0 0
2 Locked QAM256 519000000 Hz 2.6 dBmV 40.3 dB 0 0
3 Locked QAM256 525000000 Hz 2.3 dBmV 40.1 dB 0 0
4 Locked QAM256 531000000 Hz 2.5 dBmV 40.2 dB 0 0
5 Locked QAM256 537000000 Hz 2.7 dBmV 40.3 dB 0 0
6 Locked QAM256 543000000 Hz 2.9 dBmV 40.4 dB 0 0
7 Locked QAM256 549000000 Hz 3.0 dBmV 40.3 dB 0 0
8 Locked QAM256 555000000 Hz 2.7 dBmV 40.1 dB 0 0
9 Locked QAM256 561000000 Hz 2.6 dBmV 40.2 dB 0 0
10 Locked QAM256 567000000 Hz 2.8 dBmV 40.1 dB 0 0
11 Locked QAM256 573000000 Hz 2.7 dBmV 40.1 dB 0 0
12 Locked QAM256 579000000 Hz 2.6 dBmV 40.2 dB 0 0
13 Locked QAM256 585000000 Hz 2.4 dBmV 40.0 dB 0 0
14 Locked QAM256 591000000 Hz 2.4 dBmV 40.0 dB 0 0
15 Locked QAM256 597000000 Hz 2.6 dBmV 39.9 dB 0 0
16 Locked QAM256 603000000 Hz 3.0 dBmV 40.1 dB 0 0
17 Locked QAM256 609000000 Hz 2.7 dBmV 39.8 dB 0 0
18 Locked QAM256 615000000 Hz 2.6 dBmV 39.7 dB 0 0
19 Locked QAM256 621000000 Hz 2.5 dBmV 39.6 dB 0 0
20 Locked QAM256 627000000 Hz 2.3 dBmV 39.3 dB 0 0
21 Locked QAM256 633000000 Hz 2.7 dBmV 39.5 dB 0 0
22 Locked QAM256 639000000 Hz 3.0 dBmV 39.7 dB 0 0
23 Locked QAM256 645000000 Hz 2.8 dBmV 39.6 dB 0 0
24 Locked QAM256 651000000 Hz 2.6 dBmV 39.4 dB 0 0
27 Locked QAM256 663000000 Hz 2.7 dBmV 39.6 dB 0 0
28 Locked QAM256 669000000 Hz 3.3 dBmV 39.7 dB 0 0
29 Locked QAM256 675000000 Hz 3.6 dBmV 39.6 dB 0 0
30 Locked QAM256 681000000 Hz 3.4 dBmV 39.5 dB 0 0
31 Locked QAM256 687000000 Hz 3.3 dBmV 39.2 dB 0 0
32 Locked QAM256 693000000 Hz 3.4 dBmV 39.3 dB 0 0
48 Locked Other 850000000 Hz 4.7 dBmV 37.2 dB 20 0

 

 
Upstream Bonded Channels
Channel Channel ID Lock Status US Channel Type Frequency Width Power
1 84 Locked SC-QAM 38700000 Hz 6400000 Hz 44.5 dBmV
2 81 Locked SC-QAM 19300000 Hz 6400000 Hz 44.3 dBmV
3 82 Locked SC-QAM 25700000 Hz 6400000 Hz 44.3 dBmV
4 83 Locked SC-QAM 32300000 Hz 6400000 Hz 44.0 dBmV
Expert

Re: Channel ID 48 - what is it? Why corrected?

That is the DOCSIS 3.1 / OFDM downstream channel which delivers the 1000 Mbps Gigabit speed tier. It is present whether one subscribes to the Gig Speed Tier or not.

 

And no, not to worry. 20 is very low. And that channel will always show more errors than regular 256 QAM downstream channels.



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Expert

Re: Channel ID 48 - what is it? Why corrected?


@EG wrote:

That is the DOCSIS 3.1 / OFDM downstream channel which delivers the 1000 Mbps Gigabit speed tier. It is present whether one subscribes to the Gig Speed Tier or not.

 

And no, not to worry. 20 is very low. And that channel will always show more errors than regular 256 QAM downstream channels.


^ This. 

 

Also should be noted that DOCSIS 3.1 has built in Forward Error Correction, so any Correctable Errors you see are normal. It's the Uncorrectable Errors that one should be concerned with if it's showing an unusually high number. 


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I am a Customer Expert volunteering my time to help other customers here in the Forums.
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