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motorola870

join:2008-12-07
Arlington, TX
kudos:3
reply to rchandra

Re: [TWC] more SB6120 blue lights

said by rchandra:

I noticed something didn't look quite normal with my cable modem yesterday...then finally it dawned on me: it went from two blue lights (RECEIVE, LINK) to three (also SEND). So it looks like the Buffalo, NY area was upgraded to bonded upstream channels.

Thanks.

interesting can you post a screen shot of the signals from 192.168.100.1? I know with the SB6120 you can't get anymore than 4 downstreams.


rchandra
Stargate Universe fan
Premium
join:2000-11-09
14225-2105

Click for full size

Downstream Bonding Channel Value
Channel ID 1 2 3 4
Frequency 705000000 Hz 711000000 Hz 717000000 Hz 723000000 Hz
Signal to Noise Ratio 37 dB 38 dB 38 dB 37 dB
Downstream Modulation QAM256 QAM256 QAM256 QAM256
Power LevelThe 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 10 dBmV 10 dBmV

Upstream Bonding Channel Value
Channel ID 8 7 6 5
Frequency 37000000 Hz 33800000 Hz 30600000 Hz 27400000 Hz
Ranging Service ID 8247 8247 8247 8247
Symbol Rate 2.560 Msym/sec 2.560 Msym/sec 2.560 Msym/sec 2.560 Msym/sec
Power Level 46 dBmV 46 dBmV 46 dBmV 45 dBmV
Upstream Modulation [3] QPSK
[2] 16QAM
[3] QPSK
[2] 16QAM
[3] QPSK
[2] 16QAM
[3] QPSK
[2] 16QAM

Ranging Status Success Success Success Success

Signal Stats (Codewords) Bonding Channel Value
Channel ID 1 2 3 4
Total Unerrored Codewords 537027905 537028133 537028311 537028312
Total Correctable Codewords 65 1 0 1
Total Uncorrectable Codewords 626 606 553 673

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Lightning7

join:2013-02-02
Brunswick, OH

your downstream is way too high! 10 dBmV to be in fact, should be close to 0 as possible. Mines always around 0.0 to 1.0 on all 4 channels bonded. Upstream looks ok. Prefer to be in the low to mid 40's. Mine is around 43.5 dBmV and can go to 42.0 at times with a 1.5 dBmV variance.



rchandra
Stargate Universe fan
Premium
join:2000-11-09
14225-2105

maybe, but with around half a billion unerrored codewords per channel and only around 600 uncorrecables each, I'm not exceptionally worried. That's a fairly good "batting ave."



swintec
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join:2003-12-19
Alfred, ME
kudos:5
Reviews:
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reply to Lightning7

said by Lightning7:

your downstream is way too high! 10 dBmV to be in fact, should be close to 0 as possible.

10 is still within spec.

I had a modem work for years at -18 - -19dBmV..dont know how but it did.
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