Just had Virgin installed and wondered if a Guru could comment on my install please -
Downstream bonded channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
Go to Answer
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
Primary Downstream Service Flow
Primary Upstream Service Flow
Your Download Power Levels are on the high side but within spec (-6.0dBmV to +10.0 dBmV)
You have one Upstream Channel Modulation at 32 QAM, all four channels should be at 64 QAM.
Try a reboot to see if the Hub can renegotiate a better connection using this method ...
Switch the Hub off using the small switch on the rear of the Hub next to the power cord and pull the PSU plug from the wall socket.
Give it a good 5 minutes put the plug back in and switch the Hub back on.
Allow the Hub a few minutes to fully restart then check the Modulations again.
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Thanks for the quick reply. I will power off my hub for a while and see if the modulation changes on that channel.As for the Download Power Level being on the high side what does this mean in real terms for the quality of the connection. I should probably read the Technical Primer thread at some point.
The closer the Power Level are to the limits the more chance you have of problems if anything changes upstream, in that resect the closer to 0dBmV the better.
Connection wise I have read (but don't know how accurate it is) that the higher the Power Level the better the actual connection is.
I power cycled the hub and that channel seems to oscillate between 16/32/64 QAM (on clicking refresh data).Is configuration of the physical connection (Power Levels etc) performed at the cabinet or can it be done remotely.The power could be high because the incoming line originally had an external 2 way split. After the engineer visit i noticed he had removed the splitter (not sure why).
The Power Levels and QAM can be sorted by a VM Tech by changing things at the street cabinet.
The power Level can be brought down by putting an attenuator on the cable between the wall socket and Hub, not that you should do it 😉
Cheers, no I wouldn't' dare touch any of VM's kit 😉