What Type of Connectors are Employed?
Posted on May 28, 2009
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There are several types of connectors used on the bus and at the coupler stubs, the most common of which is the concentric twinax connector. The concentric twinax connector has three bayonet coupling slots/lugs known as TRB type (same envelope size as a coaxial BNC connector). The center contact is high (positive) connected to the twinax blue wire and the cylindrical contact is low (negative) connected to the twinax white wire. The body of the connector is bus shield. Additional mating interfaces include: (1) two-bayonet, (2) four-bayonet and (3) threaded. Because bayonet-type connectors do not require safety wiring and can withstand severe shock and vibration, these are typically preferred over threaded types. There is a subminiature version of the twinax concentric connector known as TRS type (same envelope size as TPS coaxial connectors). The mating interface options are the same as those for the TRB style listed above. Other connector shell options employing concentric twinax contacts include D-subminiature and cylindrical multi-pin (for example, MIL-DTL-38999 or D38999.
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