Intended for video installation and maintenance professionals, LVPro20, LVPro30, and LVPro30SR have backlit screens and re-designed back panel, software, and electronics that enable snap-on adapter module. Video Test Module snaps on to back of testers, hijacking user interface to run host of tests on BNC, RG6, RG59, or HDMI cable, including signal level and loss, transmitter mapping, and cable length and quality. It will also generate color-bar test pattern for HDMI display testing.