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The Electronics Group of Crane Aerospace & Electronics in Redmond, Wash., is offering a digital switch matrix family providing switching for high data rate emitter coupled logic (ECL) signals as fast as 300 megabytes per second, or for the low data rate of RS-422 signals. The matrices are configured so that they can accommodate as many as 144 inputs and 144 outputs, which can be distributed among clock and data signals. They provide fan-out operation, enabling each input to be routed to any or all outputs simultaneously. They are also non-blocking, meaning that any number of input and output combinations can be connected. These devices are ideal for large data routing installations. The matrices can be configured for ECL signals (model 1130) or RS-422 signals (model 1120) with the choice of input and output circuit interface cards. They incorporate redundant and user-replaceable power supplies. They provide an alarm when failure occurs. This allows for the failing power supply to be powered down and replaced, from the front of the unit, while the matrix remains operational. Other features include user-programmable signal presence/loss detection at each output. A modular design allows user serviceability with advanced built-in test features. The units can be commanded from the front panel using a keypad and color graphical display, through an RS-232 direct interface or through a 10/100 TCP/IP LAN interface. All choices offer access to the available command set. For more information, contact Crane Electronics online at www.craneae.com.