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Product Description

The Model 267-1/2 is a modular interface converter that accomplishes the hardware conversion between an RS-232 interface and an EIA-530 interface implemented in RS-422 and RS-423 voltage levels. The RS-422 signals are differential whereas the RS-423 signals are single ended. The voltage levels of the EIA-530 interface also comply with MIL-STD-188-114A, Type 2. The Model 267 packaging concept offers the user the ability to place a large number of complex, multi-purpose, interface converters in a compact rack mounted package. The Model 267 interface converter is a card that includes all of the circuitry to do bi-directional conversion for 10 Category I, differential drivers and receivers, and three Category II, single ended, circuits.

The Model 267 is offered in two versions, DTE or DCE. For the Model 267-1 the RS-232 port is configured to interface to a DTE and the EIA-530 port interfaces with a DCE. The reverse configuration is offered as the Model 267-2. The Model 267 has a power switch to allow insertion/removal of a module into a live, powered, card cage. Seven LED's display the status of the prime signals. The Model 267 Interface Converter is hosted by the Model 76-6 or 76-7(redundant power supply) Card Cage. The Model 76-6 card cage can accept up to 14 plug-in modules and contains a modular switching power supply that develops the various voltages required by the interface converters.

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