:31
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Possibly off topic - Jitter on
Ethernet over poweradapters
On Wed, Feb 27, 2013 at 7:02 PM, Magnus Danielson
mag...@rubidium.dyndns.org wrote:
On 02/12/2013 08:19 PM, Mike S wrote:
On 2/10/2013 6:04
On Wed, Feb 27, 2013 at 9:54 PM, DaveH i...@blackmountainforge.com wrote:
IP can be run on a lot of different platforms.
Check out Request for Comments: 1149
Even better, check out the guys who actually implemented RFC1149.
This page has links.
http://www.blug.linux.no/rfc1149/
Chris
Ahem!
Ethernet over powerline!
NOT PoE!
The various forms of ether over power are (for practical purposes) a
wireless ethernet protocol coupled into the AC wiring.
And yes, it is noisy timing wise, for all the same reason that a
simplex/shared variable rate 802.11 system is.
On 2/10/13
From: Rob Kimberley
[]
I'm not sure if this is the best place to ask the question, but does anyone
have experience of using Ethernet over power line adapters? I have an
outside office, and my router is in the house plugged into the phone master
socket. I have used two Ethernet over power
From: Chris Albertson
[]
THose power over Ethernet devices work with analog signals and don't
evn look at the data packets. All they do is place a DC bias on the
twisted pair.Ethernet is always transformer coupled so your
routers, switches and computers never see DC.
[]
It is unlikely to add much noise. The PoE device only puts a DC bias
on the twisted pair. The data signal is differential. It is
transformer couple to is pretty much is immune to common mode noise.
So even iif the DC bias was noisy I don't thing it would matter.
Chris Albertson
Redondo
