信号的切换采用常用的多路模拟开关。
Signal switches use the analog switches which are used often.
根据试验和理论分析，这种现象是由多路模拟开关输出引脚上的分布电容引起的。
According to tests and theoretical analysis, it is found that the distributing capacitors cause the inter-channel influence phenomenon.
频率通过用可编程器件EPLD控制，而脉冲信号的宽度和幅度通过多路模拟开关和数字电位器调节。
The pulse frequency can be selected by EPLD. The voltage amplitude and pulse width of analog pulse can be adjusted by analog switches and digitally controlled potentiometers.
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