| 摘要 |
A modem shelf is described in which internal dividers separate the interior of the shelf into individually isolated Faraday cages that effectively suppress EMI generated by circuit cards mounted within the shelf and isolate the circuit cards from EMI originating outside the shelf and from cards mounted within the shelf. The shelf enables high-speed data communications over a twisted pair network of about 10 Mbps or more. The top and bottom of the shelf are made of relatively thin sheet material, which maximizes the vertical dimension of the circuit cards mounted in the shelf and thus the area on which circuitry can be placed.
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