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COMTEST RS422 CABLE TESTER
The RS422 system is a 4 wire balanced data connection between a Controller and a Device. Examples of Controllers are editors, graphics systems and a variety of control panels. Devices include VTRs, vision mixers, routing switchers etc. Normally, 9 pin D-type male connectors are used at each end of cables, with female connectors on the rear panel of both Controller and Device. The circuit comprises 4 signal wires (2 balanced pairs) plus signal…
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