JVC GY-HD250U GY-HD250 Studio Reference Manual v1.12 (Oct. 2008) (66 pages, 18 - Page 64

Version 1.12 KM-H3000U / KM-H2500U: Multi Format HD-SDI Production Switcher Available Jan. 2009 Key Features:  12(KM-H3000) / 6(KM-H2500) multi format SDI inputs, 720p, 1080i, 480i  3(KM-H3000) / 2(KM-H2500) Keyers  4 inputs with frame synchronizers  4 up/down converters  2 2D DVEs with crop and resize functionality  2 internal media store sources with animation support  Pattern generator with circle and pattern rotation  Wash generator  Floating high quality chroma keyer  6 HD-SDI outputs; 2 programs, preview, AUX1, AUX2 and AUX3  Analog composite output  Sync generator with 3 independently timed outputs  Remote control using RS-422 and 24 GPI inputs  10 memories, 8 tallies  Positional Joystick (KM-H3000 only) KM-H3000 Accessories not included:  Desk / Rack mount frame  Redundant power supply 63