Power Level Range

[SOSAGES]

Morning all,

I was wondering if anyone knew what range the up and downstream power levels should fall between on the 50MB service.

I am not using the superhub if that has any bearing on the figures.

My upstream is currently: 45.25
My downstream is currently: 6.54

I ask as i have had a lot of issues the last 2 months and wanted to keep an eye on the power levels.

Thanks in advance.
SOS

[jimexbox]

This might be of some use...

http://community.virginmedia.com/t5/Up-to-100Mb-broadband/POWER-LEVELS-amp-SNR-A-TECHNICAL-PRIMER-Nov-2011/td-p/846181

[jempalmer]

I'm scheduled for an engineer visit tomorrow A.M. 500gb TIVO "installation". 30 to 60mb BB upgrade to be done at the same time. Reading on these forums that the power levels on my SH are too high. Currently between 8.0 and 8.5 over the 4 channels. Will I have 8 downstream channels after the upgrade and if so will those levels put the SH over the 33dBmV threshold?

Thanks.

[General Maximus]

Morning all,

I was wondering if anyone knew what range the up and downstream power levels should fall between on the 50MB service.

I am not using the superhub if that has any bearing on the figures.

My upstream is currently: 45.25
My downstream is currently: 6.54

I ask as i have had a lot of issues the last 2 months and wanted to keep an eye on the power levels.

Thanks in advance.
SOS

Your pwer levels are within spec for both downstream and upstream. What is your snr like?



I'm scheduled for an engineer visit tomorrow A.M. 500gb TIVO "installation". 30 to 60mb BB upgrade to be done at the same time. Reading on these forums that the power levels on my SH are too high. Currently between 8.0 and 8.5 over the 4 channels. Will I have 8 downstream channels after the upgrade and if so will those levels put the SH over the 33dBmV threshold?

Thanks.

you wont have 8 downstream channels after the upgrade. The superhub is capable of using 8 bonded channels and you will probably be using 3 or 4 of them atm. They are going round bonding more channels by area but there is no way you will be using 8 channels tomorrow, I think they will save that for 200mbit next year. If you are using 4 channels now I am very confident it will stay the same tomorrrow (or maybe go to 5). All the dude coming round will do is maybe check your power levels and make a phone call to get you provisioned for 60mbit. With your power levels being so high will either move your tap point in the cabinet or put an attenuator on your modem.

[SOSAGES]

Hi - sorry for being stupid how do i check my SNR? i had a look at the modem config but could not see anything obvious that screamed SNR.

[craigj2k12]

RxMER?

[General Maximus]

it should be the next thing after power and as Craig says, RxMER. As a clue, it should be something like 37db

[SOSAGES]

ahh i get ya :) thanks.

Downstream is 36.84
Upstream is 45.75
hopefully that looks ok :)

[General Maximus]

yeah thats good