Training History Problem

[Sebby]

I still think the 2Wire is to blame. But then you had it with you Netgear, Rik. I'm puzzled! 

[Rik]

It's my line, Sebby, it's mischievous.

[Sebby]

I think that goes for all BT lines, Rik. 

[Rik]

 

[Inactive]

I think that goes for all BT lines, Rik. 

With the odd exception.. 

[Rik]

Ah shaddup. 

[Simon]

Hopefully my replacement 2700 will last long enough to reach the 15 days, then I can see if my SNRM has got better.  It was up to 18 again yesterday. 

[Rik]

18 suggests that your re-synched at night, Simon, then the figure went higher during the day, as the noise went down.

[Inactive]

Ah shaddup. 

[Simon]

18 suggests that your re-synched at night, Simon, then the figure went higher during the day, as the noise went down.

So, higher, is actually a lower figure, yes?

[Rik]

No. If you have a target margin of 15, say, your router will negotiate the fastest connection it can manage for that margin. If it's done during the day, then your speed will be higher, but you'll see the margin drop below 15 at night. OTOH, if it's done at night, when noise is at its highest, then you'll get a slower sync speed, but the noise margin will rise during the day, when noise is lower.

[Lance]

I disagree with Rik, but it's because we are reading your post in different ways! You have to remember that the figure of 18 is the margin between a stable connection and the noise. Therefore, if the figure increases it means the actual noise has decreased.  

[Rik]

That's what I was trying to say.

[Inactive]

I don't agree or disagree with anyone, 'cos I don't know WTF you are talking about.

[Lance]

Lets just keep things that way, In!

[Inactive]

Lets just keep things that way, In!

That had me laughing Lance...nice one.. 

[Lance]

We aim to please!

[Simon]

I disagree with Rik, but it's because we are reading your post in different ways! You have to remember that the figure of 18 is the margin between a stable connection and the noise. Therefore, if the figure increases it means the actual noise has decreased. 

Right, but less noise is better isn't it?  So how come we are saying if the figure increases, say from 15 to 18, the noise has decreased, but we are aiming for a figure of 9 or less?  Surely, then, that means more noise! 

[Sebby]

It can be a strange one to understand and explain, but here goes... Your router will negotiate a rate so that the SNRM equals the target figure (in your case, Simon, 15dB). Come morning, the noise will have reduced (night is always noisy) so although you sync'd at a target of 15dB the night before, the reduced noise means this figure improves. Were you to re-sync again, your router would connect at a rate to meet the target SNRM; as there's less noise around, the sync will be higher. So, you'd have a SNRM of 15dB and a better sync. Come night, the figure would more than likely decline as you sync'd during a less noisy time.

[Lance]

Yes, less noise is better. The reason we are aiming for a lower margin is because the lower the margin the higher the speed. Therefore, the lower margin isn't caused by increased noise but actually increased speed and the router having to work harded to split out the noise from the data.

[Simon]

I'll have to look at this tomorrow.  I'm too tired to take it in now, and still trying to get through today's posts!

[Sebby]

It is a strange concept to grasp, but it will click, honest.

[Inactive]

You ain't alone Simon, I cannot understand WTF they are going on about either.

Bless 'em.. 

[Sebby]

[Simon]