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Product Description

The Model 287 miniature Opto Isolated RS-232 to RS-422 Interface Converter is packed with features and capability. The Model 287 does not require a separate AC or DC input, however, the power required is extracted from the RS-232 interface. This power is further conditioned and isolated to develop an isolated power supply to operate the link side of the interface converter. The Model 287 includes a DB9 female connector to allow it to be directly attached to any PC com port. A DTE/DCE switch allows reversing the transmit data and receive data signals should the Model 287 be required to interface to a different type of port. The control signals are also used as a power source. Data is accommodated at rates up to 19,200 BPS. The opto barrier is rated to withstand four kilovolt discharges onto the RS-422 link cables. The link interface is implemented in an RJ-12 modular connector. The Model 287 is housed in a small plastic case. The Model 287 has capability to withstand the high voltage transients using semiconductor circuitry which detects high voltage transients and directs them through a safe path to ground. The path in the Model 287 includes a ground stud to which is affixed a 12 inch ground wire connection composed of a 10 AWG wire with lug terminals. The Model 287 will withstand a 4 kilovolt discharge with the ground connection.

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