论文部分内容阅读
32c-8b-A/D 采用变换器是用于航天遥测系统发射部分的关键部件,用来对前端传感器送来的30路模拟信号按时间顺序依次轮流采样。其采集部分采用顺序式组合电子交换器,在同一系统中用不同采样率对不同速率的模拟信号进行采样,被采得的30路时分群信号经A/D 转换器进行编码后,再在每帧信码之首嵌入16位最佳帧同步码形成全 PCM 信号输出,并作为航天遥测系统发射部分的射频调制信号。
The 32c-8b-A / D converter is a key component used in the launch part of the aerospace telemetry system to sequentially sample the 30 analog signals from the front-end sensor in turn. The acquisition of part of the sequential combination of electronic exchangers in the same system with different sampling rates for different rates of analog signal sampling, was taken after the 30-channel time-division signal is encoded by the A / D converter, and then at each The first frame of the code embedded in the first 16-bit frame synchronization code to form the full PCM PCM signal output, and as part of aerospace launch of the radio frequency modulation signal modulation system.