Most in-circuit test fixtures use spring-loaded probes and are vacuum actuated. 很多在线测试固定装置是带有弹簧的探针或者采用真空启动的。
The development of computer and virtual instrument has provided some new ways for PCB In-circuit test. 计算机和虚拟仪器的发展为PCB在线测试提供了更为灵活的实现方式。
A pulsed total dose effect in-circuit test system based on PCI card virtual instrument was developed. Working principle and technical specifications were introduced in detail. 建立了基于PCI插卡式虚拟仪器的脉冲总剂量效应在线测试系统,详细说明了其工作原理和技术指标。
Presentation the basic elements and realization means in off-circuit and in-circuit test, using analog signature analysis to orientation fault quickly. 介绍了离线和在线测试中,利用端口特征分析实现故障的快速定位的基本原理及其实现方法。
The difficulty of which is the design of in-circuit test unit, three-wire test method and six-wire test method are used to solve effectively the key problem that isolates measured components from others on measured electronic function module in the paper. 其中,路内测试单元的设计是难点,本文采用三线测试法和六线测试法有效地解决了被测器件与电子功能模件上其他器件隔离的关键问题。