电台音频救生模块自动测试系统

介绍了基于GPIB总线的计算机与数字仪器之间的通信来实现电台音频救生模块的自动测试系统原理。系统采用了虚拟仪器软件开发平台LabWindows/CVI,利用带有GPIB接口的8648C信号源、TDS5052数字示波器与计算机连接,实现了模块的AGC响应时间指标的自动测试。详细介绍了系统的硬件组成及软件测试程序流程图,并给出了部分程序代码。最后给出了AGC响应时间的自动测试波形图,符合模块的测试要求,实验证明是可行的,对实际工程应用具有参考价值。

Automatic Test System for Radio Audio Frequency Lifesaving Module

The principle of implementing automatic test system of radio audio frequency lifesaving module based on the communication between computer and digital instrument based on GPIB bus is introduced. In this system, the development platform of virtual instrument software, LabWindows/CVI is adopted, by using the 8648C signal generator with GPIB interface, TDS5052 digital oscilloscope, and making connection with the computer, an automatic test for AGC response time of the module is implemented. The hardware composition and software test flowchart of the system are presented, and the partial program coding is given. The automatic test wavefonn of the AGC response time is illustrated. The result shows that making the test requirement for the module is satisfied. The experiments prove the feasibility and the value for reference in oracticat oroiects.