3.1 channel power.

[deviousiphone]

Hi

Is this normal for the 3.1 channel?

-16.1

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

35

Locked

33

-16.1

56832906

392

Seems like it might be off to me?

Thanks.

[Sephiroth]

No - it's out of range and will give errors. What are the Docsis 3.0 channel power levels?

[Tudor]

One thing I have noticed on my Hub4 is that the 3.1 channel is alway considerably lower the the 3.0 channels.

[deviousiphone]

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

4	163000000	1.599998	40.366287	QAM256	4
5	171000000	1.299999	40.366287	QAM256	5
6	179000000	0.900002	40.366287	QAM256	6
7	187000000	0.599998	40.366287	QAM256	7
8	195000000	0.299999	40.366287	QAM256	8
9	203000000	0.000000	40.946209	QAM256	9
10	211000000	-0.200001	40.366287	QAM256	10
11	219000000	-0.500000	40.366287	QAM256	11
12	227000000	-0.700001	40.366287	QAM256	12
13	235000000	-1.000000	40.366287	QAM256	13
14	243000000	-1.000000	40.946209	QAM256	14
15	251000000	-1.000000	40.366287	QAM256	15
16	259000000	-1.000000	40.946209	QAM256	16
17	267000000	-1.299999	40.366287	QAM256	17
18	275000000	-2.000000	40.366287	QAM256	18
19	283000000	-2.099998	40.366287	QAM256	19
20	291000000	-1.900002	40.366287	QAM256	20
21	299000000	-1.700001	40.366287	QAM256	21
22	307000000	-1.799999	40.366287	QAM256	22
23	315000000	-2.900002	38.983261	QAM256	23
24	323000000	-2.900002	38.605377	QAM256	24
25	331000000	-2.900002	38.983261	QAM256	25
26	339000000	-3.500000	38.983261	QAM256	26
27	347000000	-2.900002	38.983261	QAM256	27
28	355000000	-3.799999	38.605377	QAM256	28
29	363000000	-3.599998	38.605377	QAM256	29
30	371000000	-4.099998	38.605377	QAM256	30
31	379000000	-4.599998	38.605377	QAM256	31
32	387000000	-4.599998	38.983261	QAM256	32
33	395000000	-4.799999	38.605377	QAM256	33
34	403000000	-4.599998	38.983261	QAM256	34

[Sephiroth]

Your downstream channels are not out of range. But the DOCSIS 3.1 channel is (if it's still like you posted originally).

Do you have an attenuator attached to your cable? If so, what is the value (e.g. 10dB) written on it? In any case, if you have one, I suggest that you remove it and screw the coax cable back into the Hub tightly. Then report.

[deviousiphone]

Hi Seph

No attachments to the cable I am afraid.

It's a shame as the engineer was only here yesterday. He must not of tested the levels.

Fortunately the line doesn't seem to be compromised for general use.

Hopefully a Virgin employee will pick this up and get it sorted.

Thanks for the time you spent assisting.

[Sephiroth]

Just to say that the technician (that’s what they - in the plural sense - are) will nearly always test the power levels by plugging his own device into the coax cable.  Maybe he didn’t this time. 

I would expect the VM bods on the forum to use their remote tools to confirm that you have no DOCSIS 3.1 channel and get the Network Team to sort that’s out quick-smart.  

[deviousiphone]

I am on the 1gigabit service.

Speeds seem OK and generally stable.

I will let the powers at be take a look and see what they decide 😂

[Nathan_B]

Hi there @deviousiphone, welcome back to our forum and thanks for your post.

I have done some checks on our end after looking at the stats you posted as something did look out of spec. I will send you a PM to confirm your details and discuss this further.

Regards

Nathan

[Nathan_B]

Thanks for chatting with me via PM @deviousiphone, I'm glad I was able to help you get this issue sorted.

Please let me know how you get on with the tech visit, just a heads up too, someone over the age of 18 must be in the property when the engineer visits. If the appointment is missed there may be a £25 charge added to your account so, if you do need to reschedule or cancel for any reason you can do so via your online account here.

Regards

Nathan