1. The HD coaxial tester is designed for the installation and maintenance of analog cameras (CVBS) and HD coaxial cameras with AHD onsite. (IP cameras are not supported.) 2. It also offers many useful functions, such as video display, PTZ control, DC12V output, testing, image generation, VGA video signal input, 1.0 signal input, RS485 data search, cable testing, LED lamp, etc. 3. It supports VGAcompatible digital input. Once VGA/Video is connected, switch the selector to choose VGA mode. The maximum resolution is 1920 x 1440. The video monitor tester features a resolution 5.0inch display with 800(RGB) x 480 wide viewing angle, providing a more intuitive and easier assessment of camera image quality. It supports PAL/NTSC standard video signals. 4. The video monitor tester comes with builtin Pelco D/P PTZ control protocols. Through its RS485 interface, users can control PTZ movements (up, down, left, right) and adjust zoom and aperture settings.