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Re: Sky Broadband, Sync Speed fail
Posted: Tue Jul 15, 2014 7:11 am
by Jack Regan
Exactly the same cables. Routers are next to each other so just switching form one to the other.
SNR 50 has made a slight improvement, 800/ 4448
Re: Sky Broadband, Sync Speed fail
Posted: Tue Jul 15, 2014 10:06 am
by billion_fan
Jack Regan wrote:Exactly the same cables. Routers are next to each other so just switching form one to the other.
SNR 50 has made a slight improvement, 800/ 4448
Whats you SNR margin like with this change?
Re: Sky Broadband, Sync Speed fail
Posted: Tue Jul 15, 2014 6:01 pm
by Jack Regan
Upstream 800
Downstream 4448
SNR Margin(Upstream) 17.0
SNR Margin(Downstream) 6.5
Line Attenuation(Upstream) 23.5
Line Attenuation(Downstream) 37.0
Re: Sky Broadband, Sync Speed fail
Posted: Wed Jul 16, 2014 9:30 am
by billion_fan
Jack Regan wrote:Upstream 800
Downstream 4448
SNR Margin(Upstream) 17.0
SNR Margin(Downstream) 6.5
Line Attenuation(Upstream) 23.5
Line Attenuation(Downstream) 37.0
Try changing the SNR to 1, and see if the line is stable with that setting, and of course check the sync rate,
Re: Sky Broadband, Sync Speed fail
Posted: Wed Jul 16, 2014 5:38 pm
by Jack Regan
SNR -1 Made the service totally unstable ..
Re: Sky Broadband, Sync Speed fail
Posted: Thu Jul 17, 2014 9:19 am
by billion_fan
Jack Regan wrote:SNR -1 Made the service totally unstable ..
Not -1, just 1, we are trying to reach a SNR downstream value of 3.5db
Re: Sky Broadband, Sync Speed fail
Posted: Thu Jul 17, 2014 11:50 am
by Jack Regan
Thats a typo ... 1 was the SNR setting I tried. Although I'll make the change again to confirm .. appreciate your help with this.
Re: Sky Broadband, Sync Speed fail
Posted: Thu Jul 17, 2014 12:15 pm
by billion_fan
Jack Regan wrote:Thats a typo ... 1 was the SNR setting I tried. Although I'll make the change again to confirm .. appreciate your help with this.
If it won't sync with that try 25 for example
Re: Sky Broadband, Sync Speed fail
Posted: Tue Jul 22, 2014 6:55 pm
by Jack Regan
Finally got a chance to play with this today :
SNR 1 U7 D4.4 1024/5024 - unstable
SNR 25 U7 D4.7 1024/5024 - unstable
SNR 50 U7 D5.3 1024/4500 - stable
SNR 75 U8 D6.8 1024/4288 - stable
SNR 100 U7 D7.9 1024/3904 - stable
So I am currently at SNR 50 G.DMT. The Sky router before I just switched was 903/5024 so I'm close. But to be honest I'm wondering about staying with the 7800.
Is it likely that once set the SNR will need to be tweaked again? ...
Re: Sky Broadband, Sync Speed fail
Posted: Wed Jul 23, 2014 9:33 am
by billion_fan
Jack Regan wrote:Finally got a chance to play with this today :
SNR 1 U7 D4.4 1024/5024 - unstable
SNR 25 U7 D4.7 1024/5024 - unstable
SNR 50 U7 D5.3 1024/4500 - stable
SNR 75 U8 D6.8 1024/4288 - stable
SNR 100 U7 D7.9 1024/3904 - stable
So I am currently at SNR 50 G.DMT. The Sky router before I just switched was 903/5024 so I'm close. But to be honest I'm wondering about staying with the 7800.
Is it likely that once set the SNR will need to be tweaked again? ...
If the line is stable, you shouldn't have to tweak the SNR again