Sencore, Sioux Falls, SD, offers the VP301 Video Pro, a HDTV, NTSC, and computer display video source for service and custom audiovisual installation, alignment, and calibration. The Video Pro provides the patterns needed for black level, white balance, focus, and convergence alignment in all video display operating modes. The Video Pro is portable, lightweight, and battery-operated. (605) 339-0100; .