SNR رو چند باشه بهتره
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بالای 20 باشه عالی محسوب میشه.
SNR Margin
SNR means Signal to Noise Ratio. Simply put divide the Signal value by Noise Value
and you get SNR. You need high SNR for a stable connection. In general, a higher
signal to noise ratio will result in less errors.
•6bB. or below = Bad and will experience no line synchronisation and
frequent disconnections
•7dB-10dB. = Fair but does not leave much room for variances in conditions.
•11dB-20dB. = Good with little or no disconnection problems
•20dB-28dB. = Excellent
•29dB. or above = Outstanding
Note that most modems display value as SNR Margin and not pure SNR.