Cable Forum - 150M Just installed Hub 3.0 - Getting very low (O<5m) speeds?

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- - 150M : Just installed Hub 3.0 - Getting very low (O<5m) speeds? (https://www.cableforum.uk/board/showthread.php?t=33703640)

Damien

17-09-2016 16:06

Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Yo,

So I just installed the Hub 3.0, activated the service ahead of that, but now my speeds have dropped drastically. I was expecting my 100m service to hit near 150m but am getting around 5mbs at most. It was working fine before the 'upgrade'. I phoned VM and they 'did things at their end' but it hasn't worked, they then said there is a fault in the area and it will be slow in peak times but since it was working fine prior to this and since I can't find an error on the website I am not convinced.

Any ideas?

TAZMANUK

17-09-2016 18:15

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Hi

Login to the hub and see how many download channels you see if you see about 3 then give the hub a reboot and recheck channels and redo speed test

Might have failed to lock on.

Damien

17-09-2016 19:43

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Is this it? Only have one...

[img]Download Failed (1)[/img]

---------- Post added at 20:43 ---------- Previous post was at 20:06 ----------

Is there a way to go back and use the old superhub?

sollp

17-09-2016 19:53

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Quote:

Originally Posted by Damien (Post 35859582)

Is this it? Only have one...

https://dl.dropboxusercontent.com/u/...reenshot_1.png

---------- Post added at 20:43 ---------- Previous post was at 20:06 ----------

Is there a way to go back and use the old superhub?

Poor SNR on D/S channel hub now having trouble locking on because of this

jb66	17-09-2016 19:54

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

snr too low, you have a signal fault regardless of what hub you use, are your fittings tight? can you remove any attenuators

Damien

17-09-2016 20:12

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

So I attempted to reattach the cord and found this inbetween the hub and the cable:

http://i.imgur.com/10J5LxE.jpg

and now, either cocidence or not, I am getting:

Quote:

Downstream bonded channels
Channel Frequency(Hz) Power
(dBμV) SNR
(dB) Modulation Channel ID
1 298750000 1 32.2 256 qam 13
2 322750000 -1.7 33.4 256 qam 16
3 314750000 -1.2 32.5 256 qam 15
4 306750000 0.7 32.3 256 qam 14
5 290750000 -0.5 31 256 qam 12
6 282750000 -0.9 29.4 256 qam 11
7 274750000 0.5 29.8 256 qam 10
8 266750000 1.5 31.1 256 qam 9
9 258750000 0.7 32.2 256 qam 8
10 250750000 0.5 33.3 256 qam 7
11 242750000 1.2 33.8 256 qam 6
12 234750000 2.2 31.6 256 qam 5
13 226750000 1 25.9 256 qam 4
14 218750000 0 24.2 256 qam 3
15 210750000 0.2 26.7 256 qam 2
16 202750000 0.9 26.6 256 qam 1

I also tried to tighten the connections a bit although that didn't feel like it had much to give however now on Speedtest I think 80mbs but the web itself is still going very slow

---------- Post added at 21:12 ---------- Previous post was at 21:07 ----------

Checked again:

Quote:

Downstream bonded channels
Channel Frequency(Hz) Power
(dBμV) SNR
(dB) Modulation Channel ID
1 298750000 3.7 37.3 256 qam 13
2 322750000 2.7 37.3 256 qam 16
3 314750000 3 37.6 256 qam 15
4 306750000 3.2 37.6 256 qam 14
5 290750000 3.2 37.6 256 qam 12
6 282750000 3 37.6 256 qam 11
7 274750000 3 37.6 256 qam 10
8 266750000 3.2 37.6 256 qam 9
9 258750000 3 37.6 256 qam 8
10 250750000 3.5 37.6 256 qam 7
11 242750000 3.9 37.6 256 qam 6
12 234750000 4 38.6 256 qam 5
13 226750000 3.9 38.6 256 qam 4
14 218750000 4.3 38.9 256 qam 3
15 210750000 4.3 38.6 256 qam 2
16 202750000 4.3 38.6 256 qam 1

General Maximus

17-09-2016 21:07

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Those power levels are fine and if you are getting 80mbits on your 100mbit connection then I wouldn't be worried too much just yet, you can put it down to Saturday evening traffic. I hate to ask a stupid question but why were you expecting to get 150mbits out of your 100mbit connection?

jb66	17-09-2016 21:12

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

How's your upstream power levels?

Damien

18-09-2016 06:42

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Quote:

Originally Posted by General Maximus (Post 35859594)

It should be 150mb. I got the Hub 3.0 as part of the speed upgrade.

---------- Post added at 07:42 ---------- Previous post was at 07:41 ----------

Quote:

Originally Posted by jb66 (Post 35859595)

How's your upstream power levels?

I'll check later. Currently getting 30mb.

Damien

18-09-2016 15:23

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Today's downstream:

Quote:

Channel Frequency(Hz) Power
(dBmV) SNR
(dB) Modulation Channel ID
1 298750000 2.4 31.6 256 qam 13
2 322750000 -0.9 34.3 256 qam 16
3 314750000 -0.4 32.8 256 qam 15
4 306750000 1.5 31.8 256 qam 14
5 290750000 0.9 30.7 256 qam 12
6 282750000 0.2 30.2 256 qam 11
7 274750000 1.2 29.9 256 qam 10
8 266750000 2.4 30.9 256 qam 9
9 258750000 1.9 32.8 256 qam 8
10 250750000 1 33.8 256 qam 7
11 242750000 1 31.9 256 qam 6
12 234750000 2.5 31.3 256 qam 5
13 226750000 1.7 26.1 256 qam 4
14 218750000 0.5 24.2 256 qam 3
15 210750000 1.4 24.1 256 qam 2
16 202750000 2.2 25.2 256 qam 1

Upstream:

Quote:

Channel ID Frequency(Hz) Modulation Power
(dBmV) Mode Channel Bandwidth(Hz) Symbol Rate (ksps)
10 39400000 ATDMA 43.8 16 qam 6400000 5120
12 25800000 ATDMA 46.3 16 qam 6400000 5120

General Maximus

18-09-2016 15:35

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

upstream is absolutely fine but you still might have some problems with the downstream. The powers levels are spot on but if I remember correctly your snr should be 33+ and those 24's defo look too low. That was a few years ago though and it might have changed with all the upgrades they are doing and the new kit/technology going in.

Edit: interestingly, there is a direct correlation between the channel frequency and the snr (the lowest frequency has the lowest snr and it goes up incrementally and the highest frequency has the highest snr). I don't know how it all works so it might be a coincidence that due to the channels you are on (my bonding group is in the 130's) that you don't need a high snr. I have just had a look at mine and the majority of my channels are above 300mhz which is why the snr's are 36 and 37.

jb66	18-09-2016 15:43

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

still looks like a loose fittng somewhere. maybe splitter or isolator

General Maximus

18-09-2016 15:53

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

am I right about the correlation between low frequency and low snr or should they be higher?

Damien

18-09-2016 16:03

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

Quote:

Originally Posted by jb66 (Post 35859656)

still looks like a loose fittng somewhere. maybe splitter or isolator

That's my working theory at the moment. Finally got VM to send someone around because I suspect the problem might be with the wiring elsewhere. I just can't see where anymore force can be applied to connect things up.

I have removed that little component I linked to above. Maybe I should try reattaching it?

thenry

18-09-2016 16:12

Re: Just installed Hub 3.0 - Getting very low (O<5m) speeds?

leave it off but show the engineer when he/she comes round. Having said that I hope he/she doesn't just drive off after seeing you have removed a fault. jb66 mentions loose fittings elsewhere so have the engineer check your whole connection.

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