The TG-5000 Dual-Format HD-SDI Pattern Generator from Maxtron is a single-pattern test signal generator which supports two video output formats, 1080i 59.94 (UP) and 720p 59.94 (DN). The test pattern is the SMTPE RP-219 HDTV Color Bars, which was specifically chosen to expose system weaknesses and limitations. Overlaid over the test pattern is a traveling wizard that moves in a ping-pong fashion about the screen to help reveal dropped or repeated fields/frames, as well as frozen video. This pattern generator has a toggle switch to turn the unit on and off. The green power LED confirms power to the unit and blinks rapidly when the unit is in the 1080i mode.