wesam_az 0 Posted October 20, 2016 how can I determine weather my Active Balun supports HD-TVI or not?? it's not written in its manual as I attach a copy of the manual. another question please, which is better in long distances (425m) Active or passive balun. each camera has its own box, and its transformer close to the camera ..so do I need to use an active balun ??or it's enough to use passive balun as the power is already close to the camera. Share this post Link to post Share on other sites