【摘要】 利用ECL的随机存取存贮器(RAM)E855 64×1作了一个六输入可编程序触发逻辑线路(NIM标准)。能实现输入端数N≤6的任何逻辑功能。当改变不同的逻辑组合时,不需要改变任何硬件和连线,只需重新加载一次就可以了。本线路可以代替输入端数N≤6的任何逻辑功能的各种NIM逻辑单元用于高能物理在线实验中。利用这种原理可期望发展价格低廉的、使用灵活的和规模很大的触发逻辑系统满足高能物理计数器实验的需要。本线路的输入脉冲是脉宽≥4毫微秒的NIM信号。输出亦为NIM信号。输出端给出32毫安的电流,可连接两个50欧姆的负载,组成桥式输出。电路工作于选通和无选通两种方式。更多还原

【Abstract】 A Six Inputs Programmable Trigger Logical Circuit (NIM Standard) has beendeveloped using a ECL fully decoded random access memory (RAM) E855 64×1.This circuit can realize various logical functions of the inputs N≤6. While varyinglogical conbinations of the inputs, what is required is only loading the memories againand without hardware or link modifications. It can replace the logical NIM circuitsof the inputs N≤6 which ape used in the on-line experiments of the high energyphysics. Based on this principle, it can be expected to develop a low prices, facile andlarge scale trigger logical system in order to satisfy the requirements of the high energyphysics counter experiments. In this circuit the input signal is standard NIM level with the pulse width≥4 ns.The output signal is also standard NIM level. The output can supply 32 mA currentand connect two 50 Ω loads to form the bridge output. The circuit works with both strobeand no strobe format.更多还原