在使用数字示波器测量波形参数的时候，我们经常会遇到“光标测量”与“自动测量”结果不一致的情况，到底该哪一个比较准确？本文将为大家解开这个困扰。示波器发展到现阶段，已经不仅仅是在调试中观察波形，更重要的是能很好的测量一些参数帮助大家优化设计方案。示波器的测量方法大致有三种：刻度测量；光标测量；自动测量。刻度测量就是根据波形所占格数进行估测，估测的准确度当然是比较低的，只适合做定性分析。
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利用RFID技术的无源传感器标签功能元件芯片和传感器标签幸运的是，有多种集成度更高的无源感测和优化选择。其中有RF430FRL152H，它集成了实现图1所示功能所需的所有电路，包括用于连接到模拟传感器的14位三角积分AD以及可用于连接数字传感器的SPI/I2C端口。RF430FRL15xH带有通过铁电RAM(FRAM)实现的2KB非易失性存储器，实现了低功耗、快速读写速度、无限次读/写耐久性和高电磁抗扰度综合优势。
