地面数字电视广播发射机自动测试系统

频谱仪是测量地面数字电视广播发射机的必需仪器,提出了基于LabVIEW的虚拟仪器技术,实现了对频谱仪的软件自动控制。通过使用平铺式顺序结构,将各个单独测量模块组合起来,将分布式的测试转换为连续的自动测试,运用数据操作技术,实现了测量结果的获取和保存。测试结果表明,系统运行准确可靠,具有很好的实用性和推广性。

Automatic Test System of Digital Terrestrial Television Broadcasting Transmitters

Spectrum analyzers are necessary equipments to measure digital terrestrial television broadcasting transmit- ters. This paper proposes a virtual instrument technology based on LabVIEW, and achieves the automatic control on spectrum analyzer by software. By using the flat sequence structure, first of all, we assemble each individual test module, then, tra-nsform the distributed test to the continuous and automatic test, finally, achieve the acquisition and preservation of test results by using data manipulation technology. Test results show that the system is accurate and reliable, with good pract-icability and generalized.