From: Paul M Fly

It could be a source of trouble. It depends on the signal being jumpered,
the route the jumper takes, was
the signal controlled impedance in the board? There is a long list of
questions that come to mind. Your
best bet is get together with the circuit designer and your resident EMI
guru, show them the fix and see
what they have to say.

Good Luck,
*********************************
          Paul Fly

Eastman Kodak Company
Engineering Technology Center
901 Elmgrove Rd.
Rochester, New York 14653-5313
Phone: (716) 726-5670
Fax: (716) 726-0275
E-mail: [log in to unmask]
*********************************





"Carroll, George" <[log in to unmask]> on 08/23/2000 03:02:08
PM

Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond
      to "Carroll, George" <[log in to unmask]>

To:   [log in to unmask]
cc:    (bcc: Paul M Fly/243609/EKC)
Subject:  [TN] Jumpers




Ladies and Gentlemen,
After assembly of a board, it was discovered at test that there was an
error
in the fab board causing a signal short.  The inner layer short was cut and
a jumper installed to repair.   I request guidance regarding the allowable
length for a jumper.  I believe the linear length of this one to be about 4
inches.  Can the installation of a jumper on a board's surface cause EMI
problems?

George Carroll
SE&A

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