[Arm-netbook] SHIPPING!: EOMA-68 Micro Engineering Boards

[Christopher]

I'll look at it after 3:45CST. At the doctor's right now.

Sent from my iPhone

On Aug 7, 2013, at 1:35 PM, "luke.leighton" <luke.leighton at gmail.com> wrote:

> http://rhombus-tech.net/allwinner/a20/eoma68_a20_ethernet_tx_signal.png
> 
> rrright.  i put a scope (£80 from maplin's 2 years ago... :) across
> the ethernet tx+ line (i think) and it's clearly showing a "beat"
> signal (carrier i presume).  i altered the picture, whacked up the
> contrast so it's a little clearer.
> 
> this is *before* the ethernet socket (the one with the transformer).
> if i plug in a cable and connect between the Tx+ and Tx- i get....
> well it's practically nothing.
> 
> chris i've cut both R2 and R3 (they should not both have been added -
> only one of them) - and it's the same story: a *really* faint
> barely-visible carrier (through the RJ45).
> 
> thoughts?
> 
> l.
> 
> _______________________________________________
> arm-netbook mailing list arm-netbook at lists.phcomp.co.uk
> http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook
> Send large attachments to arm-netbook at files.phcomp.co.uk