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About This Item
The TP-PMD stadard specifies the lower sublayer of the Physical Layer for FDDI for operation on twisted pair cables. As such it specifies the power levels and characteristics of the transmitter and receiver and the interface signal requirements including jitter. TP-PMD also specifies the connector details, the requirements of conforming FDDI cable plants and the permissible bit error rates and is designed to operate with one twisted pair in each direction.