Cable Forum - View Single Post - Those BLINKIN lights

paul nolan · 30-05-2008, 00:09

I'm still getting blinking on and off.... it's less frequent than it has been but it's still happening.

I found (perhaps coincidentally) that how changing how tightly the Coax is screwed into the F Splitter sometimes helps the V+ and the cable modem find an IP

I've tried swapping over my F-Splitter and replacing the Coax but that's not done the trick.

I'm now wondering if it's signal levels. The Green Box is right outside the house and when the V+ and seperate modem were installed they had a 10 db attenuator into the V+ and a 6 db attenuator into the modem.

looking atthe "technical stuff" page on the V+ I get the following signal related readings:-

SNR: 32.0 dB, 32.0 dB, 29.0 dB
AGC: -14 dBmV, -14 dBmV, -15 dBmV
Return Power: 58 dBmv

and the following on the Modem

Downstream Receive Power Level : -3.1 dBmV
Downstream SNR : 39.0 dB
Upstream transmit Power Level : 60.0 dBmV

are these levels about right? too high? too low?

30-05-2008, 00:09	#19
paul nolan Inactive Join Date: Sep 2006 Posts: 130	Re: Those BLINKIN lights - Southampton Outage? I'm still getting blinking on and off.... it's less frequent than it has been but it's still happening. I found (perhaps coincidentally) that how changing how tightly the Coax is screwed into the F Splitter sometimes helps the V+ and the cable modem find an IP I've tried swapping over my F-Splitter and replacing the Coax but that's not done the trick. I'm now wondering if it's signal levels. The Green Box is right outside the house and when the V+ and seperate modem were installed they had a 10 db attenuator into the V+ and a 6 db attenuator into the modem. looking atthe "technical stuff" page on the V+ I get the following signal related readings:- SNR: 32.0 dB, 32.0 dB, 29.0 dB AGC: -14 dBmV, -14 dBmV, -15 dBmV Return Power: 58 dBmv and the following on the Modem Downstream Receive Power Level : -3.1 dBmV Downstream SNR : 39.0 dB Upstream transmit Power Level : 60.0 dBmV are these levels about right? too high? too low?