The reason why most people break the shield is to prevent a ground loop.  Current flows in the shield if two systems connected together are at different ground potentials.  Why are they at different potentials?  Are you using a single point grounding scheme?

Joe Berki

At 11:16 AM 5/20/2005 -0400, you (John Slade) wrote:

Both ends need to be grounded and do not use the shield as a conductor for any function.  Data running in adjacent cables can be corrupted by currents in cables next to them.  If the shields are not grounded at both ends you have created an antenna. 
 
Hi Joe,
That's contrary to what I've read in various places (ie aeroelectric connection). Its my understanding that only one end should be grounded, otherwise you have a potential difference, and current, along the shield.
 
Which is right? - anyone?