TV One-Task - Series Analogue and test pattern Generators are ultra compact, high performance products designed to meet the most demanding requirements. The output resolution and refresh rate can be selected from a wide variety of presets in either RGBHV or YPbPr format. Model 1T-TGPCHD provides an Analogue output, while model 1T-TG-DVI provides a DVI output. The fifteen Test Patterns provided were selected as the most useful for video reference and troubleshooting applications. Both models are 5VDC powered.