【摘 要】
：
采用时分制传输多路信号,常发现抽样输出脉冲PAM信号前沿和后沿过渡时间增大时,造成编码精度下降。前沿过渡时间增大,将造成编码器输出的PCM信号(本文主要讨论8—4—2—1码)
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采用时分制传输多路信号,常发现抽样输出脉冲PAM信号前沿和后沿过渡时间增大时,造成编码精度下降。前沿过渡时间增大,将造成编码器输出的PCM信号(本文主要讨论8—4—2—1码)在输入信号电平过中值的,出现编码分层值的跳变。后沿过度时间增大,将出现下一路信号假的高电平。特别在前一路为高电平信号,后一路为低电平信号。前一路信号对后一路信号影响最严重。今分析其影响和消除方法,并列出实测数据。
Transmission of multi-channel signal using time-division, often found that the sampling output pulse PAM signal front and back transition time increases, resulting in decreased encoding accuracy. Frontier transition time increases, will result in the encoder output PCM signal (in this paper, mainly discussed 8-4-2-1 code) in the input signal level over the median, the encoded hierarchical value of the jump. After the excessive time increases, there will be the next signal false high. Especially in the previous high-level signal, the signal is low after all the way. The signal of the former road has the worst effect on the signal of the latter road. This analysis of its impact and eliminate methods, and lists the measured data.
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