(1)了解多点信号平均器的原理 (2)观察与测量多点信号平均器的输出特性 (3)观察与测量多点信号平均器的抑制噪声能力-(1) to multi-point signal averaging of the Principle (2) observation and measurement of multi-point signal averaging, the output characteristic (3) Observation and measurement of multi-p