Journal of Networking Technology Oleg Borisov Panagiev 13 2 2022 https://doi.org/10.6025/jnt/2022/13/2/42-48 https://www.dline.info/jnt/fulltext/v13n2/jntv13n2_3.pdf We have introduced methods to develop the indicators of the CATV/HFC systems for Downstream. We proposed B/G and D/K standards for the digital carrier in HRC/ IRC systems using mathematical equations and algorithms. After the experimental results we have presented the values of BER, MER and SNR of the digital carrier for standard distribution.