The examination hardware system is developed, which includes system design, A/D sampling subsystem, frequency detection and downconversion subsystem, PCI data transmission subsystem.
完成了硬件实验平台的研究与开发，包括系统的硬件设计方案，以及A/D数据采样板、测频与下变频处理板和PCI 卡的设计。
The interface circuits include the PCI interface of the master controller, the interface of A/D converter and interface (HPI ) of the association processor.
接口电路又包括与主控制器的PCI接口，与A/D转换器的接口和与协处理器的接口（HPI）。
The data acquisition system includes analog input, A/D conversion, data buffering, DMA transferring and PCI interface.
采集系统包括模拟输入、A/D变换、数据缓存、数据DMA传输及PCI总线接口等电路。
The data acquisition system includes analog input, A/D conversion, data buffering, DMA transferring and PCI interface.
采集系统包括模拟输入、A/D变换、数据缓存、数据DMA传输及PCI总线接口等电路。
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