[SI-LIST] Re: Tip & Ring Signals -Reg

Suresh, your primary concern with tip and ring should be meeting the safety 
standards.  Earth can provide some crosstalk shielding, but at the low 
frequencies of DSL you are primarily talking about shielding from other 
nearby RF sources.

Steve
At 05:14 AM 12/22/2004 +0000, RamachandranSuresh Kumar wrote:
>
>Hi all,
>I am a new user.
>
>This is the 12 layer ADSL  line card and regarding giving
>earth shield pouring.
>
>I am routing  24 differential pairs of tip@ring signals from the 
>transformer to the  CPCI Connector in the layout.
>I would like to know
>
>1. How if Earth Shield is poured in between the  tip@ring signal
>    routing plays the role.
>
>Whether earth shield helps in any way to this differential signal.
>
>The shield is shorted in the backplane with the ground,and kept sperately 
>in the line card.
>
>Expecting your reply
>
>With Regard,
>Suresh Kumar.R
>
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