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Standard User wolvesmad
(experienced) Fri 02-Jun-06 21:12:06
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Re: ST516v6 SNR Margin Tweaking 101


[re: Banger] [link to this post]
 
I understand now...........I'm aiming for 6Mb, but 5Mb is realistic tbh. Hopefully 6Mb can be achieved with tweaking.

What is the 510 like on low SNR??

------------------------------------------------
PIPEX

(Xtreme5)

Pipex GO! 2Mb(NDO Speed Test)/(Adsl Guide Speed Test)

Can'tWait4MaxDSL!!

Local Line Atten(dB):46 Local SNR Margin(dB):22
------------------------------------------------


Standard User Banger
(knowledge is power) Fri 02-Jun-06 21:56:04
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Re: ST516v6 SNR Margin Tweaking 101


[re: wolvesmad] [link to this post]
 
In reply to:

What is the 510 like on low SNR??




Hope someone else can advise on that as mine sticks at 5.5 to 6 db and is rock solid, havent experienced any lower than those figures.

Tim
Eclipse now ZeN
ST510v4 (4.3.2.6 CU Firmware) on 8 Meg Active
Check my bad boy speeds out on ZeN


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Standard User deleted
(deleted) Fri 02-Jun-06 22:38:40
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Re: ST516v6 SNR Margin Tweaking 101


[re: Banger] [link to this post]
 
I got rid of my ST510v4 soon after upgrading to Max as it was not particularly good at holding sync on my longish line at the higher speeds. As it does not allow SNR margin tweaking, there wasn't much I could do to improve the situation other than swap it for something else.

Now running a ST510v6, which is a completely different beast and much better for Max.

Adam.


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Standard User deleted
(deleted) Sun 04-Jun-06 09:48:56
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Re: ST516v6 SNR Margin Tweaking 101


[re: Banger] [link to this post]
 
In reply to:

DMT 7.11 now with sound effects.



I thought I was going mad! Strange noises every minute! I really need to get my server back up and running again so I don't have to run DMT on my Windows desktop.

Edited by deleted (Sun 04-Jun-06 09:49:48)

Standard User Banger
(knowledge is power) Sun 04-Jun-06 16:24:37
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Re: ST516v6 SNR Margin Tweaking 101


[re: deleted] [link to this post]
 
You can turn them off in the Misc/Options.

Tim
Eclipse now ZeN
ST510v4 (4.3.2.6 CU Firmware) on 8 Meg Active
Check my bad boy speeds out on ZeN


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Standard User JinxterX2
(experienced) Mon 05-Jun-06 13:43:03
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Re: ST516v6 SNR Margin Tweaking 101


[re: Banger] [link to this post]
 
DMT v7.16 is out


fixed: Telnet-Session Keep-Alive did not work correctly

Standard User JinxterX2
(experienced) Thu 08-Jun-06 14:55:58
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Re: ST516v6 SNR Margin Tweaking 101


[re: JinxterX2] [link to this post]
 
DMT Tool v7.17 is out


added: DMT-Server update (v0.74)
fixed: SNR-Monitor results disappear after Automat-Task was executed (if activated)


Btw, modemoption00=TrainingMarginGain and modemoption01=ShowtimeMarginGain apparently, so probably best to experiment with both these options at the same time when tweaking.

Still not sure exactly what the Area51 registers do (options 0d & 0e) but they have an effect on sync rate anyway dunno about power levels.
Standard User deleted
(deleted) Fri 09-Jun-06 12:00:44
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Re: ST516v6 SNR Margin Tweaking 101


[re: JinxterX2] [link to this post]
 
Just got a Speedtouch 536v6 and downloaded DMT V7.17.

DMT connects fine, show line speeds, errors etc. and will resync and reset the router.

However I cannot seem to change the sync. speed.

I set the Modem00 value to 28 then 80 - no change.

I then set the marging to max. on the slider - again no change.

I now don't know if the valuse aren't being set or if I have so much margin on SNR that it doesn't make any difference.

Just to confirm; setting the margin to maximum should bring the sync. speed down if there is a poor SNR?

I am right back to the test socket and the line is still going up dand down like a yoyo.

I have switched back to the Belkin with a sync speed of 5Mb but this also seems to be dropping the link every few minutes.

With the Belkin, the PPPoA seems to drop but the ADSL sync stays up.
However the router does not attempt to restart the line.

With the Speedtouch the DSL drops as well but the line does come back up.

I would like to be able to wind the sync. down on the Speedtouch to see if this will make the line more stable, but no joy so far.
It has 5.4.0.13 firmware; the download from the speedtouch website is just labelled 5.4 so I am wary of loading this over my router at present.

Not having a good day.

[Now back on the Speedtouch again - line is getting worse all the time]

Dave R
Standard User deleted
(deleted) Sat 10-Jun-06 08:55:35
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Re: ST516v6 SNR Margin Tweaking 101


[re: JinxterX2] [link to this post]
 
"Btw, modemoption00=TrainingMarginGain and modemoption01=ShowtimeMarginGain apparently, so probably best to experiment with both these options at the same time when tweaking. "

From my testing so far this looks like the values you have to achieve before syncing.

I have 00 set to 80 and the link comes up at 8Mb
I have increased the 01 setting and found that with it set to 78 the link will come up at 8Mb but with it set to 80 the link will not come up at all.

My tentative conclusion is that these SNR values have to be met before the link will come up.

However the Speedtouch does not seem to drop the sync speed if these values are not achievable.

I need the eqivalent of the Conexant 'MaxDownRate' fix to reduce the down sync rate.

Anyone have any ideas?
Standard User JinxterX2
(experienced) Sat 10-Jun-06 12:32:35
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Re: ST516v6 SNR Margin Tweaking 101


[re: deleted] [link to this post]
 
Hmmm option00 is probably minimum margin during training/negotiation and option01 is minimum margin during showtime i.e when the connection is up. Probably wrong tho.

Edited by JinxterX2 (Sat 10-Jun-06 12:38:37)

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