Metal working – Method of mechanical manufacture – Electrical device making
Patent
1987-09-18
1990-06-05
Eley, Timothy V.
Metal working
Method of mechanical manufacture
Electrical device making
29834, 29846, H05K 336, H05K 302, H05K 310
Patent
active
049302140
ABSTRACT:
An electrical to fiber optic conversion unit for use in a fiber optic transmission link includes a ferrous metal chassis with an open front end for receiving a plurality of conversion modules and power supply or test modules. The conversion module includes circuitry for converting electrical signals to fiber optic signals and is constructed of a multi-layer printed circuit board having top and bottom layers substantially covered with a non-current conducting chassis ground. The several internal layers of the conversion PC board include two signal layers for interconnecting components on the board, with the signal layers being separated by a power distribution layer and a interconnect layer for connecting components on opposite ends of the board. The multi-layer PC construction suppresses RF noise from the conversion module providing that the front panel of the module may be left uncovered while still achieving very low levels of RF emission.
REFERENCES:
patent: 4399487 (1983-08-01), Neumann
patent: 4479263 (1984-10-01), Rosenfeldt et al.
patent: 4631641 (1986-12-01), Brombal et al.
patent: 4751613 (1988-06-01), Werdin et al.
The "Versimux" brochure for Versitron, a division of Keene Corporation.
The "Versimux Fiber Optic Multiplexer" manual for Versitron, a division of Keene Corporation.
"MP908 Fiber Optic Multiplexer Port" brochure for Versitron, a division of Keene Corporation.
"MP918 Fiber Optic Multiplexer Port" brochure for Versitron, a division of Keene Corporation.
"MP907 Fiber Optic Multiplexer Port" brochure for Versitron, a division of Keene Corporation.
"MP917 Fiber Optic Multiplexer Port" brochure for Versitron, a division of Keene Corporation.
"MP927 Fiber Optic Multiplexer Port" brochure for Versitron, a division of Keene Corporation.
"MP947 Fiber Optic Multiplexer Port" brochure for Versitron, a division of Keene Corporation.
"MP9701 Fiber Optic Multiplexer Port", brochure for Versitron, a division of Keene Corporation.
"MP9711 Series Fiber Optic Link" brochure for Versitron, a division of Keene Corporation.
"MP9721 Telephone Multiplexer Port" brochure for Versitron, a division of Keene Corporation.
"MP9301 Fiber Optic Multiplexer Port" brochure for Versitron, a division of Keene Corporation.
"MPF9702 Telephone Optic Drop Port" brochure for Versitron, a division of Keene Corporation.
"VersiLink Stand-Alone Fiber Optic Communications Modules" brochure for Versitron, a division of Keene Corporation.
Henke Reinhold
Werdin David A.
ADC Telecommunications Inc.
Eley Timothy V.
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