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在电子计算机中往往把字的信息用一束传输线来进行传送,在传输高速脉冲信号时,对带状电缆组成的二线式或三线式传输线路进行了试验,以便代替由大量同轴电缆组成的传输线路。带状电缆的优点是,它既可取得较高的波阻抗,又能使机械结构简化。在距离较短的线路上,不仅信号噪声儿(S/N)极大,而且传输速度亦超过同轴电缆。本文同时还介绍了求算试制的带状电缆的各种常数,分析各种传输特性和少数导体的带状电缆在计算机中作短距离的传输。对于加上上升时间为20毫微秒的脉冲信号时的传输特性进行了实际测量,得到了良好的特性。
In electronic computers, word information is often transmitted by a transmission line. When transmitting high-speed pulse signals, two-wire or three-wire transmission lines composed of ribbon cables are tested in place of a large number of coaxial cables Transmission line. The advantage of ribbon cable is that it can achieve higher wave impedance, but also to simplify the mechanical structure. In the short distance of the line, not only the signal noise (S / N) is extremely large, and the transmission speed also exceeds the coaxial cable. This article also describes the calculation of the prototype of the ribbon cable of various constants, analysis of a variety of transmission characteristics and a few conductors of the ribbon cable in the computer for short-distance transmission. The transmission characteristics at the time of adding the pulse signal with a rise time of 20 nanoseconds were actually measured, and good characteristics were obtained.