Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for
How do you know snr setting?
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Plusnet Community
- :
- Forum
- :
- Help with my Plusnet services
- :
- Broadband
- :
- Re: How do you know snr setting?
How do you know snr setting?
30-10-2010 10:41 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
How can you find out what your SNR is set at and if for instance it's set at 9 and your SNR drops below this let's say to 8, would you lose connection or is the setting of 9 there just to cap your ip profile?
Message 1 of 4
(807 Views)
3 REPLIES 3
Re: How do you know snr setting?
30-10-2010 10:47 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
I assume that you are asking about the default SNR.
The only way to check that is to do a resync and then check the noise margin reported by your router immediately afterwards.
The effect of the default noise margin is only to set the starting conditions at the resync.
Once you are connected the router will hang onto the connection until either the noise overwhelms the signal or the error rates become unacceptably high.
Typically the line will stay in sync down to about 3 - 4 dB depending on the quality of the line.
For example my line will hold down to about 3dB but the error rates can become unacceptable at 3.5dB.
There are two things to note
On a very quiet line the noise margin can drop lower without problems and not all routers report the same noise margin (typical error is +/-0.5dB
The only way to check that is to do a resync and then check the noise margin reported by your router immediately afterwards.
The effect of the default noise margin is only to set the starting conditions at the resync.
Once you are connected the router will hang onto the connection until either the noise overwhelms the signal or the error rates become unacceptably high.
Typically the line will stay in sync down to about 3 - 4 dB depending on the quality of the line.
For example my line will hold down to about 3dB but the error rates can become unacceptable at 3.5dB.
There are two things to note
On a very quiet line the noise margin can drop lower without problems and not all routers report the same noise margin (typical error is +/-0.5dB
Message 2 of 4
(500 Views)
Re: How do you know snr setting?
30-10-2010 11:47 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
Thanks for the quick reply. That puts my mind at rest, has your explanation concurs to what happened to me. My connection dropped 2 days ago and showed an SNR of 9 but this has been going has low has 7 and I was hoping that this would not cause my connection to drop. So I suppose my SNR is set at 9, but would I be right in thinking that if my connection holds out for the 400 hours that gets mentioned on this site my SNR should drop to 6? May I just add that I'm on ADSL2+.
Message 3 of 4
(500 Views)
Re: How do you know snr setting?
30-10-2010 11:50 AM
- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Highlight
- Report to Moderator
I wouldn't hold your breath as it seems look at all sorts of things (error rates included) using an unknown algorithm.
It may or it may not - it's in the lap of the gods
It may or it may not - it's in the lap of the gods
Message 4 of 4
(500 Views)
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Plusnet Community
- :
- Forum
- :
- Help with my Plusnet services
- :
- Broadband
- :
- Re: How do you know snr setting?