Then the author has also accomplished the high speed data acquisition of ignition voltage and ignition current by adopting the high speed analog to digital conversion device and the first in and first out memory device ( fifo ) 采用高速a / d转换器和先进先出存储器( fifo ) ,有效地实现了高速数据采集,实现了对点火电压、点火电流的采集。
This converter changes the carrier frequency of a radio signal from rf at the antenna to some intermediate frequency that an analog - to - digital conversion chip can transform into a software - processable format 从天线接收到无线电信号后,这种变频器将其中的载频转换成中间频率,然后类比数位转换晶片再将中间频率转换成可由软体处理的格式。
The minimum thickness of sheath and maximum overall diameter of cables for analogue conversion lan are to see table 2 , and the minimu thickness of sheath and maximum overall diameter of cable for digital conversion lan are to table 3 模拟交换用局用电缆的护套最小厚度和电缆最大外径见表2 ;数字交换用局用电缆的护套最小厚度和电缆最大外径见表3 。
The data - sampling section completes analogue - to - digital conversion using fpga and high speed adc , then transmits these data to processing communication equipment in some format . because fpga has high speed processing capacity , this section can obtain very high sampling rate 数据采集部分采用现场可编程门阵列( fpga )作为与模数转换器件( adc )的接口,在单芯片内实现了同步采样控制、数据编码传输的功能。
The signals of ccir 656 are converted into the signals with the format that is suitable to the display devices . the analog - to - digital conversion is completed by ad9883a chip for the signals of hdtv from y / pr / pb interface and analog rgb component signals from vga interface 接口电路还用ad9883a芯片对高清晰度视频信号和vga接口输出的模拟rgb视频信号进行模数转换,转换为24bitsrgb数字视频信号,最后执行视频格式转换。