Accommodating VME64, VXS, and VPX boards in 6U and 3U form factors, Model 522 Development System provides unobstructed access to both system and rear transition boards for device monitoring. It has 200 cfm speed-controlled fans, front-mounted test points, and LED’s for all dc voltages, as well as optional LCD for displaying system voltages and fan and temperature monitoring functions. Modular, portable system is available in both standard and custom configurations.