Tests for key modules are completed, and a local closed-loop test system is designed for the simulation of V.17 modem system.
分别对系统各个模块进行模块级测试，并设计开发了基于多线程技术的本地闭环测试系统，以实现对V．17调制解调软件进行系统级仿真实验测试。
参考来源 - 高速传真通信系统中的调制解调器研究·2,447,543篇论文数据，部分数据来源于NoteExpress
设计方案分为两步：开环测试和闭环测试。
The scheme have two step: open loop test and closed loop test.
我们所研制的这种测试仪，实际是一种闭环测试系统。
The liquid flow meter developed by TRICM is in fact a closed loop measurement system.
更重要的是，它是一种闭环测试方法，测试过程中系统处在受控状态。
Most important, it is a kind of closed-loop test and lead to the least effect on process.
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