Turbo HD (TVI) systems
Turbo HD - Hikvision Digital Technology patented technology that allows to transmit High Definition video using coaxial cables as like a RG 59 (CCTV cable) and RG6U (television cable) to long distance, 500 meters using 2-5 Megapixel cameras and 700 meters using 1 Megapixel cameras. Also you can use UTP and FTP cable to transmit signal with video baluns.
Thanks to this technology it is very simple to upgrade old analog video surveillance system to HD, you don't need to install new cables, can use old cables with new cameras. Turbo HD DVR allow to connect HD cameras and old Analog cameras in one recorder, so you don't need to change all cameras at one time, you can use old cameras and HD cameras together.