Use a complete Hybrid or Tribrid DVR system to replace or expand existing equipment, or as a new low-cost value-oriented HD deployment. Cameras can be mixed as HD and non-HD, and Tribrid systems offer IP capability for further scalability. When purchasing a specific type of system, e.g. HD-TVI Tribrid, ensure that all cameras on that system will be HD-TVI, analog/CCTV, or compatible IP cameras. Do not mix and match the various HD technologies: HD-SDI, HD-TVI, HD-CVI, and AHD.