A new era of hadron collisions will start around 2027 with the High-Luminosity LHC, that will allow to collect ten times more data that what has been collected since 10 years at LHC.
In order to withstand the high expected radiation doses, the ATLAS Liquid Argon Calorimeter readout electronics will be upgraded.
The calibration board delivers calibration pulses with known amplitude and shape close to ionisation signal, to calibrate the 128 000 channels of the LAr calorimeters.
Stringent requirements on the linearity, uniformity and dynamic range have to be fulfil to qualify the design. The first results of the tests on the first 32-channels calibration prototype will be shown.