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Rafiq-l
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Filters on the coaxial cable

Hi, 

don’t know if I’m using the right terminology, this filter at the end of my coaxial cable which then goes it to the back of modem, does it need to be fitted or can I do without it ?

if I’ve got them plugged in then I have no connection, I’ve had this problem for 2 days now and I’ve had to remove them for my internet to work.

anybody please let me know if I need to book an engineer.

00393DC3-6F3E-4CF2-98AA-4C7FE4FE9468.jpeg

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Richw1982
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Message 2 of 19
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Re: Filters on the coaxial cable

Hi, can you copy and paste your upstream and downstream power levels from the hub settings pages?

I work for Virgin Media - but all opinions posted here are my own
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Rafiq-l
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Message 3 of 19
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Re: Filters on the coaxial cable

How would I find that info ?

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Richw1982
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Message 4 of 19
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Re: Filters on the coaxial cable

if you go to 192.168.0.1 under the password box there is an option for 'Check Router Status' if you click on that select downstream and then upstream.  

I work for Virgin Media - but all opinions posted here are my own
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Rafiq-l
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Message 5 of 19
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Re: Filters on the coaxial cable

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

16030000054.5205995120 KSym/sec16QAM5
23940000052.7705995120 KSym/sec16QAM8
35370000053.7705995120 KSym/sec16QAM6
44620000053.0205995120 KSym/sec16QAM7



3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1US_TYPE_STDMA0040
2US_TYPE_STDMA00400
3US_TYPE_STDMA0090
4US_TYPE_STDMA00200

 

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Rafiq-l
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Re: Filters on the coaxial cable

3.0 Downstream channels

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

41630000006.90000240.946209QAM2564
11390000007.40000240.366287QAM2561
21470000007.09999840.366287QAM2562
31550000006.90000240.366287QAM2563
51710000006.69999738.983261QAM2565
61790000006.50000040.366287QAM2566
71870000006.50000040.366287QAM2567
81950000006.30000340.366287QAM2568
92030000006.19999740.366287QAM2569
102110000006.30000338.983261QAM25610
112190000006.40000240.366287QAM25611
122270000006.40000238.983261QAM25612
132350000006.40000238.983261QAM25613
142430000006.40000238.983261QAM25614
152510000006.50000038.983261QAM25615
162590000006.69999738.983261QAM25616
172670000006.59999838.983261QAM25617
182750000006.69999740.366287QAM25618
192830000006.40000238.983261QAM25619
202910000006.50000040.366287QAM25620
212990000006.80000340.366287QAM25621
223070000007.09999838.983261QAM25622
233150000007.30000340.366287QAM25623
243230000007.59999840.366287QAM25624
253310000007.19999738.983261QAM25625
263390000007.50000040.366287QAM25626
273470000007.69999740.366287QAM25627
283550000007.50000040.366287QAM25628
293630000007.59999840.366287QAM25629
303710000007.69999740.366287QAM25630
313790000007.69999740.366287QAM25631
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Rafiq-l
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Message 7 of 19
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Re: Filters on the coaxial cable

3.0 Downstream channels

Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

4Locked40.94620900
1Locked40.36628700
2Locked40.36628700
3Locked40.36628700
5Locked38.98326100
6Locked40.36628700
7Locked40.36628700
8Locked40.36628700
9Locked40.36628700
10Locked38.98326100
11Locked40.36628700
12Locked38.98326100
13Locked38.98326100
14Locked38.98326100
15Locked38.98326100
16Locked38.98326100
17Locked38.98326100
18Locked40.36628700
19Locked38.98326100
20Locked40.36628700
21Locked40.36628700
22Locked38.98326100
23Locked40.36628700
24Locked40.36628700
25Locked38.98326100
26Locked40.36628700
27Locked40.36628700
28Locked40.36628700
29Locked40.36628700
30Locked40.36628700
31Locked40.36628700
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Message 8 of 19
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Re: Filters on the coaxial cable

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

33964K1880QAM4096759



3.1 Downstream channels

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

33Locked439.517502260
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Richw1982
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Message 9 of 19
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Re: Filters on the coaxial cable

Your upstream levels are out of spec, they should be 33-51 yours are around 53.  I assume the attenuators are wideband, so they affect downstream and upstream, this would bring your levels further out and would explain why you were getting no service.  I would leave them off for now, one of the forum team should be along soon and will be able to help you further.  I think you are going to require an engineer visit to investigate 

 

I work for Virgin Media - but all opinions posted here are my own
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Rafiq-l
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Message 10 of 19
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Re: Filters on the coaxial cable

Thank you 👍

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