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Standard User tehidyman
(learned) Wed 15-Jun-11 14:06:26
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Setting Target SNR


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On my Netgear DG834g v4 I have the ability to reset my target SNR via Telnet. At present my noise margin varies around 15db. Attenuation is 53 db and current sync rate is 1920kbps. If I set a different target SNR could I increase my sync? I would like to increase it a little to get an IP Profile of 2Mbps. I was on Adsl2+ but have downgraded to avoid the problems of a noisy line. If it is possible how much should I change my target by and which direction?
Standard User epyon
(learned) Wed 15-Jun-11 14:35:10
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Re: Setting Target SNR


[re: tehidyman] [link to this post]
 
Around 70% SNR should just get you there.

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Standard User burakkucat
(member) Wed 15-Jun-11 15:52:11
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Re: Setting Target SNR


[re: tehidyman] [link to this post]
 
In reply to a post by tehidyman:
On my Netgear DG834g v4 I have the ability to reset my target SNR via Telnet. At present my noise margin varies around 15db. Attenuation is 53 db and current sync rate is 1920kbps. If I set a different target SNR could I increase my sync? I would like to increase it a little to get an IP Profile of 2Mbps. I was on Adsl2+ but have downgraded to avoid the problems of a noisy line. If it is possible how much should I change my target by and which direction?
I assume you have reset the DG834Gv4's ADSL mode from auto to G.Dmt.

I would now advise that you reduce your SNRM by 3dB to 12dB and then monitor the line status for a few days. If, after that monitoring period, the line still seems stable you might like to test a further 3dB reduction of the SNRM to 9dB.

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Standard User XRaySpeX
(knowledge is power) Wed 15-Jun-11 17:10:04
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Re: Setting Target SNR


[re: tehidyman] [link to this post]
 
Via TELNET:
adslctl configure --snr 50
to drop by 3 dB to 12 dB.
adslctl configure --snr 25
to drop by 4.5 dB to 10.5 dB.

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