Methodology for determining the length of the cable from the terminal device to the switching equipment in IP video surveillance systems

The article considers the issue of the methodology for calculating guaranteed, high-quality, uninterrupted transmission of video information over Ethernet protocol, with PoE technology based on the 10GBASE/1000BASE-T standard from the terminal device to the source of information accumulation. The exact indicators/degrees/coefficients affecting/reducing the signal transmission range, such as: temperature, electromagnetic fields, detachable joints, splices/couplings, operational losses, have been established. The calculation method was carried out taking into account modern types of cable products: "U/SFTP Cat.6 4x2x24AWG", "F/SFUTP Cat.6 4x2x24AWG", "SFTP Cat.7 4x2x24AWG LSZH" and "SFTP Cat.7a 4x2x24AWG LSZH". The conducted studies prove the possibility of a significant increase in the signal transmission range on the 1000BASE-T standard due to the use of modern cable products, and the resulting formula allows for accurate calculations taking into account the presence or absence of various operational factors.