Cable Forum

Cable Forum (https://www.cableforum.uk/board/index.php)
-   Virgin Media Internet Service (https://www.cableforum.uk/board/forumdisplay.php?f=12)
-   -   Superhub bouncing (https://www.cableforum.uk/board/showthread.php?t=33675269)

foxtrot_yankee 28-02-2011 14:26

Re: Superhub bouncing
 
So the engineer came out on Saturday lunchtime: He fitted the 6dB attenuator and replaced the splitter in the grey box on the outside wall of the house as it had corroded pretty badly.

The power levels reduced too much (+2dB) so I've taken the attenuator off for now. The T3 and T4 timeouts still exist in the Event Log. The Superhub hasn't dropped connection since, but it still doesn't "feel" right. Webpages and YouTube videos can take an age to load and sometimes timeout. There doesn't appear to be evidence of packet loss either.

How can I resolve these T3 and T4 timeouts?

pip08456 28-02-2011 14:30

Re: Superhub bouncing
 
If you are saying that a downstream power level of 2dBmv is too low then you are mistaken. The closer to 0dBmv the better.

foxtrot_yankee 28-02-2011 15:01

Re: Superhub bouncing
 
Quote:

Originally Posted by pip08456 (Post 35183761)
If you are saying that a downstream power level of 2dBmv is too low then you are mistaken. The closer to 0dBmv the better.

It brings the SNR down to 27-33dB though. Without the attenuator, the SNR is around 44dB.

pip08456 28-02-2011 15:36

Re: Superhub bouncing
 
So why didn't you say that in the first place or do you think just cherry picking parts of the stats will help you with your problem?

foxtrot_yankee 28-02-2011 15:44

Re: Superhub bouncing
 
Quote:

Originally Posted by pip08456 (Post 35183833)
So why didn't you say that in the first place or do you think just cherry picking parts of the stats will help you with your problem?

Nice hissy fit. :D

Peter_ 28-02-2011 15:46

Re: Superhub bouncing
 
Quote:

Originally Posted by foxtrot_yankee (Post 35183799)
It brings the SNR down to 27-33dB though. Without the attenuator, the SNR is around 44dB.

SNR is fine at 44dB.

pip08456 28-02-2011 15:54

Re: Superhub bouncing
 
Quote:

Originally Posted by foxtrot_yankee (Post 35183845)
Nice hissy fit. :D

Yup!:D

foxtrot_yankee 28-02-2011 16:01

Re: Superhub bouncing
 
Quote:

Originally Posted by Masque (Post 35183848)
SNR is fine at 44dB.

I know, but that's where there's a conflict:

Without the attenuator, power is high but SNR is good.
With the attenuator, power is good but SNR is low.

In any case, my primary concern is these T3 and T4 timeouts which I'd like to investigate. I believe these may be independent of the Superhub's levels. :confused:

pabscars 28-02-2011 16:13

Re: Superhub bouncing
 
Surely SNR shouldn't be dropping that much with just a 6dB attenuator fitted, mine doesn't.

I wonder if the attenuator is faulty?

---------- Post added at 17:13 ---------- Previous post was at 17:10 ----------

I think posting your full up and downstream stats are in order, preferably with the attenuator and without.

pip08456 28-02-2011 16:15

Re: Superhub bouncing
 
Quote:

Originally Posted by pabscars (Post 35183878)
Surely SNR shouldn't be dropping that much with just a 6dB attenuator fitted, mine doesn't.

I wonder if the attenuator is faulty?

---------- Post added at 17:13 ---------- Previous post was at 17:10 ----------

I think posting your full up and downstream stats are in order, preferably with the attenuator and without.

Saves "cherry picking!".

foxtrot_yankee 28-02-2011 16:28

Re: Superhub bouncing
 
Quote:

Originally Posted by pabscars (Post 35183878)
Surely SNR shouldn't be dropping that much with just a 6dB attenuator fitted, mine doesn't.

I wonder if the attenuator is faulty?

---------- Post added at 17:13 ---------- Previous post was at 17:10 ----------

I think posting your full up and downstream stats are in order, preferably with the attenuator and without.

Without the attenuator is in the first post. I'll post them with the attenuator when I get in tonight.

Quote:

Originally Posted by pip08456 (Post 35183882)
Saves "cherry picking!".

Waaah! :bigcry:

pabscars 28-02-2011 16:38

Re: Superhub bouncing
 
Try and post as much info as you can, your first post doesn't show much at all, so include the quantity and frequency of T3 and T4's, what speed your supposed to be getting, whether your connecting wired or wireless, Up AND downstream power levels.

It will help diagnosing your issues that much easier for those in the know, and once armed with the right knowledge you can ring up and hopefully get it sorted.

pip08456 28-02-2011 16:42

Re: Superhub bouncing
 
Quote:

Originally Posted by pabscars (Post 35183904)
Try and post as much info as you can, your first post doesn't show much at all, so include the quantity and frequency of T3 and T4's, what speed your supposed to be getting, whether your connecting wired or wireless, Up AND downstream power levels.

It will help diagnosing your issues that much easier for those in the know, and once armed with the right knowledge you can ring up and hopefully get it sorted.

Good one! Saves "cherry picking"!
https://www.cableforum.co.uk/images/local/2011/02/1.jpg

https://www.cableforum.co.uk/images/local/2015/12/3.gif

jb66 28-02-2011 16:49

Re: Superhub bouncing
 
It must be a faulty attenuator or its not screwed in tight

foxtrot_yankee 28-02-2011 16:55

Re: Superhub bouncing
 
Quote:

Originally Posted by pip08456 (Post 35183910)
Good one! Whine, whine, whine!

:D


All times are GMT. The time now is 01:21.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
All Posts and Content are © Cable Forum