The Embedded Local Monitor Board upgrade proposals

Abstract

The Embedded Local Monitor Board (ELMB) is a microcontroller based plug-in module using the CANopen communication protocol. It has been widely used in LHC systems and experiments for slow-control and monitoring purposes, providing multiple, galvanically isolated analog inputs, and multiple digital inputs and outputs. While the module showed excellent performance in the past 15 years, a new design is deemed necessary due to the obsolescence of some components of the existing ELMB and the higher radiation tolerance required for the planned HL-LHC upgrade. Three development paths, one fully backward compatible and two conceptually different solutions with different levels of radiation tolerance are presented.