Quartz crystals are also found inside test and measurement equipment, such as counters, signal generators, and oscilloscopes.
在测试测量设备中也有它们的身影，例如计数器、信号发生器及示波器。
By using test signal method, the sub-synchronous electrical damping characteristics of a generator and the impacts of the designed SEDC on the generators electrical damping are analyzed.
采用测试信号法，通过计算发电机组的次同步电气阻尼特性，分析所设计的SEDC对发电机组次同步振荡的抑制效果。
Accurate GPS signal generators can be used as the analysis aid in test and evaluation of advanced GPS receivers designs.
精确的GPS信号生成器是测试与评价先进GPS接收机设计的重要分析工具。
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