Universal interfacing card for nuclear measuring system

An universal interfacing card has been developed for data communications between the NIM system and 16 bit IBM personal computer, XT/AT, to improve performance of the measuring system. It can be applied for both data analyzing and nucleonic controlling system, using a package program which is designed for supporting the user. The universal interfacing card can transfer the BCD counting data from a scaler with six digit capacity and receive a signal level from 8 modules of ratemeter with multiplexing system. Each channel can accept the signal of 0 to 100 mV with an error of less than +3.6% full scale. The card can be generated 0 to 10 V low level discriminator scanning signal with resolution of 10 mV and linearity 0.998. Besides, it can control eight sets of external devices through the signal obtained by comparing the result from the ratemeter with that from the reference point