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EMI Prescan |
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It is extremely cost effective to determine at the earliest opportunity
if a electronic design is within the acceptable limits of the controlling
EMI regulations
- If it is, the assurance redirects the effort to the other design issues
- If it is not, the early detection saves money by redirecting the
EMI design before more effort is wasted.
- The following are three possible design issues where EMI prescan is useful.
- The design moves from concept to prototype
- A completed design is operated in a different setting
(i.e. from commercial to residential use) or
- A design has "feature creep"
- This method has been used on:
- Easylite ballasts
- Colorado vNet Control Products
- Colorado vNet Digital Audio Products
- Possible "fixes" if there is a problem
- When the radiated portion of the design is not in compliance
there are several possibilities -- the problem can be just one or
a combination of these issues
- Overall Layout of the Printed Circuit board
- Inadequate bypass capacitors
- Improper placement of radiating components
- Number of layers within the Printed Circuit Board
- Speed of high frequency signals
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