Horizontal pitch
Encyclopedia
Horizontal pitch is a unit of length defined by the Eurocard printed circuit board
standard used to measure the horizontal width of rack mounted electronic equipment, similar to the rack unit
(U) used to measure vertical heights of rack mounted equipment. One HP is 0.2 inch wide. A standard 19-inch rack
is 84 HP wide. A standard 23-inch rack
is 115 HP wide.
Printed circuit board
A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or signal traces etched from copper sheets laminated onto a non-conductive substrate. It is also referred to as printed wiring board or etched wiring...
standard used to measure the horizontal width of rack mounted electronic equipment, similar to the rack unit
Rack unit
A rack unit or U is a unit of measure used to describe the height of equipment intended for mounting in a 19-inch rack or a 23-inch rack...
(U) used to measure vertical heights of rack mounted equipment. One HP is 0.2 inch wide. A standard 19-inch rack
19-inch rack
A 19-inch rack is a standardized frame or enclosure for mounting multiple equipment modules. Each module has a front panel that is wide, including edges or ears that protrude on each side which allow the module to be fastened to the rack frame with screws.-Overview and history:Equipment designed...
is 84 HP wide. A standard 23-inch rack
23-inch rack
A 23-inch rack is used for housing telephone , computer, audio and other equipment though is less common than the 19-inch rack. The size notes the width of the faceplate for the installed equipment...
is 115 HP wide.