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Speedy11(at)aol.com
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Posted: Sat Mar 08, 2008 7:50 am Post subject: Thanks

Bob,

 Thanks for your reply.

 I'm slowly learning more as I go along.

 Stan Sutterfield

 Do not archive

  

  	  Quote: 	
		       Follow the instructions. If the wiring diagram

    provided by    the manufacturer SHOWS a ground connection

    at both ends, then    there's a reason for it an

    the designer's intentions should    be observed.



    However, the general rule of thumb is that    shields

    are to be GROUNDED at one end only . . . that    doesn't

    mean that the shield is not CONNECTED at both ends .    . .

    the shield may have an important role to play    with

    respect to signal or power return paths.



       A very common double-grounding error in aircraft

    audio    systems occurs when headset and microphone

    jacks are allowed    to find local ground at the

    point of attachment to the    airframe. This is why

    insulating washers  . .    .



http://www.aeroelectric.com/Pictures/Connectors/Audio/Jack_Insulation_Washers.jpg



       are recommended where the jacks are to me mounted

    to a    conductive location on structure.



    The schematic for    wiring the product should be

    quite explicit as to where the    shields are connected. 	


 

  



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