Cable Forum - View Single Post - 50M Think Broadband Ping Monitor Results (POST YOURS)

Sephiroth · 18-01-2013, 13:49

As Qasi says. The SNR strikes me as being the key value. I published in another post somewhere a table of low power levels and the necessary SNR with headroom published in the DOCSIS 3 specs. In practice, the SNR headroom needs to be DOCSIS value + 6dB to allow for impairments not attributable to the foreseen DOCSIS environment.

Yet mine currently seems to be running OK with one channel at 28 dB SNR & power at -11.5 dBmv (albeit some DS speed loss). When I had a VMNG 300, it was plain shocking when I had that brief spell at 28 dB SNR. Is my SH a good'n? LOL!

18-01-2013, 13:49	#3229
Sephiroth Wisdom & truth Join Date: Jul 2009 Location: RG41 Services: RG41: 1Gig VOLT Rutland: Gigaclear 400/400 Posts: 12,505	Re: Think Broadband Ping Monitor Results (POST YOURS) As Qasi says. The SNR strikes me as being the key value. I published in another post somewhere a table of low power levels and the necessary SNR with headroom published in the DOCSIS 3 specs. In practice, the SNR headroom needs to be DOCSIS value + 6dB to allow for impairments not attributable to the foreseen DOCSIS environment. Yet mine currently seems to be running OK with one channel at 28 dB SNR & power at -11.5 dBmv (albeit some DS speed loss). When I had a VMNG 300, it was plain shocking when I had that brief spell at 28 dB SNR. Is my SH a good'n? LOL! __________________ *Seph.* My advice is at your risk.