In its very basic configuration, CROME system is composed of 3 mains devices : the CMPU, the alarm unit (CAU) and the CUPS.
Each device is composed of various electronic boards. The CMPU is the core monitoring and processing unit. It is composed essentially of 3 boards :
- A front end that is composed to collected charges that are generated by the detector. The measurement ranges covers 9 decades without auto-scaling going from the femto-ampere to the micro-ampere. This board can also generate high voltage going from 0 to 2000V.
- The processing boards
- The connection and power supply board