The principle of vision limit comparisontester is described. The design process and tested results of the tester performance parameters are given.
叙述视觉极限对比测试仪的原理，介绍该仪器系统的设计过程，给出仪器性能参数的实际测试结果。
2
It introduces team members to the underlying principles of test automation tools such as IBM Rational Functional Tester: modular test design, and tool-assisted data entry and data comparison.