Since A/D and D/A converters are the key components in seismic instruments, their circuit designs and printed circuitboard (PCB) layout have a near relation with the feature of the instrument.
转换器、D／A转换器是地震仪器的核心部件，其电路和印刷板的布置及设计直接影响到仪器的精度和指标。
2
According to the schematics, PCB layout has been done, and furthermore, the core circuitboard of hardware has been accomplished via PCB manufacturing, soldering and debugging.
依照原理图，自行设计印刷电路板，再经过制作、焊接和调试，最终完成硬件核心部分电路板。
3
Introduce the PCB boardlayout, the principle of the layout of components, debug the hardware circuit after welding and present the module debugging method.