  This paper presents an analysis of the updated version of the Front-End Board
(FEB) for the NectarCAM camera, developed for the Cherenkov Telescope Array
Observatory (CTAO). The FEB is a critical component responsible for reading and
converting signals from the camera's photo-multiplier tubes into digital data
and generating module-level trigger signals. This study provides an overview of
the design and performance of the new FEB version, including the use of an
improved NECTAr3 chip with advanced features. The NECTAr3 chip contains a
switched capacitor array for sampling signals at 1 GHz and a 12-bit
analog-to-digital converter (ADC) for digitization upon receiving a trigger
signal. The integration of the new NECTAr3 chip results in a significant
reduction of NectarCAM's deadtime by an order of magnitude compared to the
previous version. The paper also presents the results of laboratory testing,
including measurements of timing performance, linearity, dynamic range, and
deadtime, to characterize the new FEB's performance.
