Beam characteristics at ejection to be processed by a minicomputer. Jacques Nuttall and Fabio Fabiani (image 176.8.71) checking hardware with software. The fast ejection was linked to the accelerator synchronization pulse trains by a complex programming and timing system that coordinated ejection, beam transport, separators and bubble chamber operations. Tasios Kitsakis (image 177.8.71) testing its high level output stages.