Calibration and performance tests of the Very-Front-End electronics for the CMS electromagnetic calorimeter

The Very-Front-End electronics processing signals from pho- todetectors of the CMS electromagnetic calorimeter have been put through an extensive test programme to guarantee function- ality and reliability. The final characteristics of the VFE boards designed for the calorimeter barrel and endcaps are presented. The results, which have been also verified during test beam at CERN, confirm the high quality of the boards production and show that the CMS detector specifications are reached.