A 64-CHANNEL VME TRANSIENT RECORDER MODULE

This paper describes an inexpensive and innovative VME transient recor der module, with 64 multiplexed analog input channels, 12-bit resoluti on, sampling rate up to 666 kSPS and 2 MWords of local memory providin g standalone operation capability. This module was developed for the o peration control of the tokamak ISTTOK[1]. Its architecture takes adva ntage of the large scale integration and improved dynamic performance of recently developed devices. The main operational features are descr ibed and methods for assessing the performance are discussed. The expe rimental results already obtained as well as the philosophy of operati on and programmability of this module suggest its adequacy to the moni toring of a large and complex nuclear physics experiment.