一引言一个自动测试系统(Automated Test System)由或多或少的器件组成,包括各色各样的可程控或不可程控的电子测量仪器及其他器件(例如可程控的衰减器、晶体管测试夹具等)。今后,为简单起见,把这些组成部分或单元都统称为器件,这些器件本身往往可以脱离该ATS而单独使用,或移作为另一个ATS的一个组成部份。 I. INTRODUCTION An Automated Test System consists of more or less devices, including a variety of programmable or non-programmable electronic measuring instruments and other devices (such as programmable attenuators, transistor test fixture, etc.) . In the future, for the sake of simplicity, these components or units are collectively referred to as devices, which themselves can often be used alone or as part of another ATS.