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HP—IL(简称接口环)是美国H.P公司继HP—IB后近年发展的一种新型接口系统,由于它简单、功耗小,特别适合于由便携式仪器、手持式计算机及外设组成的自动测试系统,用在野外或现埸进行测试。本文介绍HP—IL的原理、功能、特点;结合HP—IL系统接口芯片(HP—82166集成电路芯片)介绍其结构、组成、各部份作用原理以及数据传递过程。最后还给出了系统中控者、讲者、听者、空闲者的响应流程图。本文为进一步了解这一种新的接口技术提供了一个基础知识。
HP-IL (referred to as the interface ring) is a new type of interface system developed by the HP company in the United States following the HP-IB in recent years. Due to its simplicity and low power consumption, HP-IL is especially suitable for the automatic Test system, used in the field or present 埸 for testing. This paper introduces the principle, function and characteristic of HP-IL. It introduces the structure, composition, principle of each part and data transmission process with HP-IL system interface chip (HP-82166 IC). Finally, it gives the response flow chart of the system controller, speaker, listener and idle person. This article provides a basic understanding of this new interface technology.