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Upgrading the Performance of Legacy Hard Metric Backplane Systems using the 3M UHM Connector
Keywords: connector, upgrade, Compact PCI
System vendors are continually faced with a consequence of Moores Law. The marketplace routinely requires improvements in data transfer rates through electronic systems because of clients insatiable demand for ever increasing bandwidth. As such, backplane systems typically have short market lives and the new product development paradigm normally requires a ground-up system redesign utilizing new silicon, board designs and interconnect components. One approach for lengthening the usable market life of these systems can be to build next generation daughter cards that will function in the legacy backplane. Such an approach can work if the silicon can support enhanced performance over the legacy backplane and if performance enhanced interconnects are available to mate to this backplane. In this paper, it will shown that the 3M UHM connector offers such an interconnect solution to enable stretching the usable performance life of Compact PCI and Hard Metric connector based backplanes. It will be shown that the UHM connector, when mated to the legacy Compact PCI or Hard Metric headers on existing backplanes, enables a significant increase in bandwidth allowing the existing system to be driven data rates that are multiple times higher. In addition, the isolation improvement offered by the UHM connector will be shown to simultaneously provide approximately a 50% reduction in backplane connector crosstalk. Finally, different options for incorporating the UHM connector in to a legacy system will be illustrated including one that allows drop-in replacement of HM or Compact PCI connectors without any board design changes.
Alexander Barr, Advanced Product Development Specialist
3M Company
Austin, TX

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