rtd cpuModules CMA34CR, Руководство пользователя

Страница: 32 / 102

24 CMA34CR cpuModule BDM-610000083 Rev L
Connecting to the Stack
The bus connectors of the cpuModule are simply plugged onto a PC/104 stack to connect to other devices.
Follow the procedure below to ensure that stacking of the modules does not damage connectors or electronics.
For mechanical dimensions, including board-to-board spacing, see Physical Dimensions on page 75.
1. Turn off power to the PC/104 system or stack.
2. Always work at an ESD protected workstation, and wear a grounded wrist-strap.
3. Select and install stand-offs to properly position the cpuModule on the stack.
4. Remove the cpuModule from its anti-static bag.
5. Check that pins of the bus connector are properly positioned.
6. Check the stacking order; make sure all of the busses used by the peripheral cards are connected to the
cpuModule.
7. Hold the cpuModule by its edges and orient it so the bus connector pins line up with the matching
connector on the stack.
8. Gently and evenly press the cpuModule onto the PC/104 stack.
Power Input Connections
Power to the board must come from either the top or bottom PCIe/104 Type 2 bus connectors ( CN1 or CN2 ),
or the auxiliary power connector ( CN3 ). These connectors provide the re5V and +12V DC voltage rail
inputs to the cpuModule. This is different from previous cpuModules which only re5V for operation.
WARNING Do not force the module onto the stack! Wiggling the module or applying too much pressure
may damage it. If the module does not readily press into place, remove it, check for bent pins or
out-of-place keying pins, and try again.