In 2017, the luminosity at the VEPP-2000 collider at the Budker Institute of Nuclear Physics SB RAS, Novosibirsk, was increased. In this regard, it was decided to upgrade the trigger system of the CMD-3 detector. For this, the development of a device called the Final Decision Block was started. The task of this unit is to generate the final decision on recording the current event in the detector based on the data received from the Charged and Neutral triggers. In this paper, we present the designed block and tests carried out with it, as well as its integration in the Data Acquisition System of the CMD-3 detector. The test results are presented both at the test bench and directly as a part of the Data Acquisition System of the detector.