On 9 Mar 2012, at 13:53, Nick wrote:
For the record, "magnetics" refers to galvanic isolation for the
data pairs between the Ethernet cable and the host device -
essentially a pair of small 1:1 transformers which used to be in
an external little module but nowadays tends to be inside the RJ45
socket itself. See http://www.amphenolcanada.com/ProductSearch/pdf/
RJmag_CAT.pdf for an example.
Its a very bad bit of quality control if this really happened as
stated... regrettably, the problem would only manifest itself with
the destruction of the RP...
They X-rayed a sample Nick,
The Pi blog says regarding the delay: 'This is because of a hardware
parts substitution that was made in the factory by accident:
specifically, where we’d specified jacks with integrated magnetics in
the BOM and schematics, the factory soldered in non-magnetic jacks.'
They have checked the board over for other issues - this seems to be
the only one.
John S
--
You received this message because you are subscribed to the Google Groups
"neonixie-l" group.
To post to this group, send an email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/neonixie-l?hl=en-GB.
