Test Patterns
Ed,
I'd like to comment on one subject you raised in this note. I've changed the
subject since this is essentially a new thread.
It is likely that test patterns analogous to those specified in 1000BASE-X Annex
36A will be made available in 10 GbE PHY parts from multiple vendors. There need
not be a compromise between these test patterns and an Idle pattern which keeps
EMI to a minimum through efficient coding.
Best Regards,
Rich
--
Edward Chang wrote:
>
> Rich:
>
> In addition, the /I/, IDLE, signal circulating along the media (or fiber) is
> very powerful debugging tool in a field to test the whole link, as I
> mentioned several times. I will be disappointed to see this tool taken away
> by a scrambled code. Although the repetitive /A/K/R/ but not actually
> scrambled code is manageable. For an optical link, the IDLE should not
> cause EMI problem for us. I may bring the GbE optical link EMI test at next
> meeting.
>
> Regards,
>
> Edward S. Chang
> NetWorth Technologies, Inc.
> EChang@xxxxxxxxxxxxxxxx
> Tel: (610)292-2870
> Fax: (610)292-2872
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