What are the specs for a VMEbus board?
A VMEbus board can be either single or double height. A single height board is 100mm x 160mm with one 96 pin DIN 41612 connector called P1 on the rear that plugs into the backplane. A double height board is 233mm x 160mm and may have a second 96 pin DIN connector named P2. A single height board is also known as a 3U and a double height a 6U. There are 9U boards in existence but they are not part of the VMEbus specification. The front edge or face of a typical board is 20mm wide and may incorporate RS-232 connectors, indicator lights and switches.