Since the introduction of HD Analog technology in 2010, several HD Analog formats have emerged, including: HD-CVI, AHD, HD-SDI and HD-TVI. While all HD Analog options offer the same basic benefits – both absolute and compared to analog or IP, each format features a unique set of capabilities and compatibilities.
High-Definition Transport Video (HD-TVI) is the latest HD technology introduced. HD-TVI solutions are capable of transmitting zero latency 720p or 1080p HD video over standard coaxial cabling up to 1600’. HD-TVI “tri-brid” recorders are compatible with all analog, all HD-TVI cameras, and supported IP cameras, on any channel and in any configuration.
High-definition Serial Digital Interface (HD-SDI) was the first HD Analog format introduced to the video security market. HD-SDI solutions are capable of transmitting 720p or 1080p resolution video over standard coaxial cable. HD-SDI recorders are only compatible with like-branded HD-SDI cameras and limited analog models, in limited configurations.
High-Definition Composite Video Interface (HD-CVI) is a proprietary HD Analog technology developed by the Chinese security product manufacturer, Dahua. HD-CVI solutions are capable of transmitting HD video over standard analog coaxial cabling up to 1300’ (1080p) and 1600’ (720p). HD-CVI recorders are compatible with all analog and like-branded HD-CVI cameras, in limited configurations.
Analog High Definition (AHD) is an alternative standard for HD data transmission solution utilized by security industry chip manufacturers NextChip and Eyenix. AHD solutions are capable of transmitting 720p @ 25-30 fps while minimizing data loss. AHD recorders are compatible with all analog and like-branded AHD cameras, in limited configurations.