OMG-ULTRA-SIO Dual Port Isolated/Non-Isolated ISA RS-422/485 Adaptor Board User's Guide
■ The OMG-ULTRA-SIO provides the PC with two additional ground isolated RS-422/485 (P/N 3189) or two non-isolated RS-422/485 (P/N 3089) serial ports for terminals, modems, printers, etc. Isolation is important in installations where the equipment being connected to the PC is either far from the PC, or on a different power transformer circuit. Ground loop current is a commonly neglected and misunderstood phenomenon that leads to data loss and the possible destruction of communications interfaces. The isolated OMG-ULTRA-SIO provides up to 500 volts DC of isolation.
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Dual Port Isolated ISA RS-422/485 Adaptor Board 、 Dual Port Non-Isolated ISA RS-422/485 Adaptor Board 、 Serial I/O Adapter |
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User's Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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2005/3/11 |
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702 KB |
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