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    Interesting SNR reading

    This is a discussion on Interesting SNR reading within the Sky Router forums, part of the Sky Broadband help category; I know it's only been a couple of days since I migtated to Sky Max. BUT in that time my ...

    1. #11
      Wingco's Avatar
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      Re: Interesting SNR reading

      I know it's only been a couple of days since I migtated to Sky Max. BUT in that time my sync speed has dropped from 15389 to 13779, and speed has dropped from 14995 to around 10000 to 12000kbps.

      The snr is a steady 8 during the day, but fluctuates between 7 and 2 during the evening. I followed the advice in the tutorial to try to lock the router to a higher number by rebooting a number of times, but it didn't seem to make any difference.

      I'm considering using my Speedtouch with DMT (I know it's against the T&C's) to try to stabilise the snr. Opinions would be appreciated.


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    3. #12
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      Re: Interesting SNR reading

      Stats as at 20:09hrs today

      ADSL Link Downstream Upstream
      Connection Speed 13607 kbps 764 kbps
      Line Attenuation 31 db 8 db
      Noise Margin 4 db 18 db

    4. #13
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      Re: Interesting SNR reading

      the Speedtouch/Dmt tool to rase your noise margin would work (you know it is against T&C's to use your own router)
      Or you could contact Sky to cap your speed a little.
      If it was me I would do it myself with the speedtouch, but it is your choice.

    5. #14
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      Re: Interesting SNR reading

      Thanks Brian. If I used the ST + DMT am I likely to see any upward movement in sync speed?. I'm not too familiar with ADSL2.

    6. #15
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      Re: Interesting SNR reading

      As it happens my standby router is a Speedtouch 546v6 and I have been using it for a while (not with DMT). It's performance is no better than the sagem. I have loaded DMT and rased my noise margin and as you would expect the sync speed drops a little. Try to rase yours to a nice healthy 8dB and see how you go.

    7. #16
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      Re: Interesting SNR reading

      I'll give it a couple more days to see if it stabilizes, then when I have a play I'll have a benchmark.

    8. #17
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      Re: Interesting SNR reading

      Well!, either my exchange has just started to suffer contention, or something else is afoot.

      I was getting download speeds of around 10000/12000kbps using the 934G and a sync of around 13607. Snr was jumping anywhere betwen 10 and 0!.

      Since changing to my ST585v6 with DMT snr to 8, download speeds have been around the 8000kbps mark

      Line states taken from the Speedtouch:

      Bandwidth (Up/Down) [kbps/kbps]: 764 / 14,548
      Data Transferred (Sent/Received) [MB/MB]: 1.58 / 11.13
      Output Power (Up/Down) [dBm]: 12.5 / 0.0
      Line Attenuation (Up/Down) [dB]: 16.5 / 32.0
      SN Margin (Up/Down) [dB]: 10.5 / 7.5

    9. #18
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      Re: Interesting SNR reading

      With a sync of 14500 you should see a download speed of 12-13 Mbps using ethernet. I know you are not a newcomer to broadband, but have your optimised your PC with something like TCPOptimiser, link below. Also have you checked from your Test socket?

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


      Useful Utilites

      http://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





    10. #19
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      Re: Interesting SNR reading

      Just ran TCP Optimiser, no difference. Have upped the snr to 10 to help stabilise the line. Will give it a couple of hours to see what happens, then will compare via test socket.

      Thanks for your input.

    11. #20
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      Re: Interesting SNR reading

      Is there any reason why you are having to stabilise your line? Is you connection dropping? The V2 Sky routers seem to be able to keep their connection down almost to zero. My V1 often drops to 5.4 without loosing the connection.

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


      Useful Utilites

      http://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





     

     
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