... look to OSD to operation.-S1 (2)to switch NTSC/PAL output, (1)to switch S-Video/CGA output.FAQNo signal on you ... CGA monitor, adjust you monitor.Image no color-please switch NTSC/PAL, or switch SVIDEO/RGBS.SPECIFICATIONS Power DC5V 2A ± 0.5v ... 480P NTSC/PAL S-Video 480P NTSC/PALUser control Output Switch, Image Zoom, Image Position,Output adjust. Menu Key Dimensions 100 ...