FO Gryphon FAQ / Resources
General Information
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Q: Is there a need for isolating the Satellite Module during EMC testing?
A: The FO SAT Modules need to be isolated by 50mm.
The reason is the bypass caps typically are placed inside the fiber optic satellite modules from inputs to the Printed Circuit Board/Chassis. If the case of the fiber optic module is placed directly on the ground plane and there are bypass caps inside the satellite module from input to chassis, then there is an additional RF path provided to travel. This can cause different behavior and this is what is being avoided by isolating the fiber optic module by 50mm insulation above the ground plane. [REF - 004]
