Download Hardware Manual - RTD Embedded Technologies, Inc.

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Connecting to the PC/104 Bus
The PC/104 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.
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.
1.
Turn off power to the PC/104 system or stack.
2.
Select and install stand-offs to properly position the cpuModule on the PC/104 stack.
3.
Touch a grounded metal part of the rack to discharge any buildup of static electricity.
4.
Remove the cpuModule from its anti-static bag.
5.
Check that keying pins in the bus connector are properly positioned.
6.
Check the stacking order; make sure an XT bus card will not be placed between two AT bus cards or it
will interrupt the AT bus signals.
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.
Connecting to the PC/104-Plus (PCI) Bus
Other PC/104-Plus or PCI-104 expansion boards may be connected to the cpuModule’s PC/104-Plus (PCI) bus
connector. To connect expansion modules to the PC/104-Plus bus, follow the procedure below to ensure that
stacking of the modules does not damage connectors or electronics.
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.
1.
Turn off power to the PC/104-Plus or PCI-104 system or stack.
2.
Select and install stand-offs to properly position the cpuModule on the stack.
3.
Touch a grounded metal part of the rack to discharge any buildup of static electricity.
4.
Remove the cpuModule from its anti-static bag.
5.
Check that keying pins in the bus connector are properly positioned.
6.
Check the stacking order; if a PCI to ISA bridge card is used to connect any PC/104 modules, make sure
an XT bus card will not be placed between two AT bus cards or it will interrupt the AT bus signals.
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-Plus or PCI-104 stack.
There are three additional considerations to make when using the PCI bus:
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BDM-610000063
Slot selection switches on add-in boards
PCI bus expansion card power
PCI bus signaling levels
Rev F
Chapter 2: Getting Started
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