uptream power level not within acceptable range for docsis 3.1 modem

Upstream QAM	Channel Bonding Value
1	2	3	4	5
ACTIVE	ACTIVE	ACTIVE	ACTIVE	ACTIVE
30300000	41200000	36700000	23700000	17300000
5120	1280	5120	5120	5120
42.520599	42.000000	41.770599	43.020599	43.770599
32QAM	64QAM	64QAM	64QAM	64QAM
US_TYPE_STDMA	US_TYPE_STDMA	US_TYPE_STDMA	US_TYPE_STDMA	US_TYPE_STDMA

it should be between +55 dBmV to 45 dBmV

please help.

Thanks

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Responses

EG

Expert

•

111.4K Messages

5 years ago

It's fine. Are you actually having any connectivity problems ?

0

rmaster

Frequent Visitor

•

16 Messages

5 years ago

yes I'm

0

EG

Expert

•

111.4K Messages

5 years ago

Please describe them.

What do the downstream power levels and the SNR's look like ?

0

rmaster

Frequent Visitor

•

16 Messages

5 years ago

Downstream well within operating range, it is just upstream power level not to meeting the requirement

this what I own

https://www.surfboard.com/products/wi-fi-cable-modems/sbg8300/

0

EG

Expert

•

111.4K Messages

5 years ago

Can we see the downstream stuff please ? As I stated, the upstream power is fine.

Arris is wrong ! They have been passing the buck and have been conning people with that statement lately !! They are probably trying to cover up for the lawsuits against them because of their use of the horrible Puma 6 chipsets... Only the Comcast plant / engineering specs matter;

Specification Min Max
Downstream Power Level
Cable Modems -10dBmV +10dBmV
Gateways and EMTAs -7dBmV +7dBmV
Downstream Signal to Noise Ratio 35dB -
Upstream Power Level +35dBmV +50dBmV
Upstream Signal to Noise Ratio 31dB -
Upstream Receive Power -2dBmV
+2dBmV

You didn't describe your connectivity problem as was asked ?

0

rmaster

Frequent Visitor

•

16 Messages

5 years ago

well here it is

IndexLock StatusFrequency (Hz)SNR (dB)Power Level (dBmV)Modulation

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked
507000000	405000000	411000000	417000000	423000000	429000000	435000000	441000000	447000000	453000000	459000000	465000000	471000000	477000000	483000000	489000000	495000000	513000000	519000000	525000000	531000000	543000000	549000000	555000000	561000000	567000000	573000000	579000000	585000000	591000000	597000000
38.983261	40.366287	40.366287	40.366287	40.366287	40.946209	40.366287	38.983261	40.946209	38.983261	40.366287	40.366287	38.983261	38.983261	38.983261	38.983261	38.983261	38.983261	40.366287	38.983261	38.983261	40.366287	40.366287	38.983261	40.366287	40.366287	40.366287	38.983261	40.366287	38.983261	38.983261
-0.799999	-1.200001	-1.299999	-1.099998	-1.200001	-1.200001	-1.400002	-1.400002	-1.299999	-1.900002	-1.799999	-1.900002	-2.000000	-1.799999	-1.900002	-1.599998	-1.700001	-0.799999	-0.799999	-0.599998	-0.400002	-0.200001	0.299999	0.200001	0.000000	0.400002	0.200001	0.299999	-0.099998	-0.200001	0.099998
QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256

0

EG

Expert

•

111.4K Messages

5 years ago

It's all good. You still haven't described your connectivity problem...

0

rmaster

Frequent Visitor

•

16 Messages

5 years ago

Well on 6th day I couldnt login into gateway

on 7th day all connectins were lost, no wifi or wired connection at all

endup resetting modem to bring it back online

0

rmaster

Frequent Visitor

•

16 Messages

5 years ago

any thoughts

0

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rmaster

uptream power level not within acceptable range for docsis 3.1 modem

EG

rmaster

EG

rmaster

EG

rmaster

EG

rmaster

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