摘要: Two fast NIM logic scale-down units have been designed and packaged in a single-width NIM module. The scale-down factor ''N'' is set via an octal DIP switch located on the front panel. Each unit accepts input pulses of width >50 n... 展开 Two fast NIM logic scale-down units have been designed and packaged in a single-width NIM module. The scale-down factor ''N'' is set via an octal DIP switch located on the front panel. Each unit accepts input pulses of width >50 ns up to a maximum rate of 15 Mhz. The output pulses are produced at a rate of 1/N th of the input rate where N is an integer between 1 and 255. The time difference between the input and output signals is approx.10 ns and remains constant regardless of the scale-down factor. LEDs attached to the input and output pulses give a visual indication of the relative rates. (ERA citation 12:029029) 收起