The EXC-8000cPCI is an advanced Multi Protocol card (up to 6 modules) and together with the M8K429 (5 channel) module gives you a ARINC-429 test and simulation board for the Compact PCI bus.
The EXC-4000cPCI is an advanced Multi Protocol card (up to 4 modules) and together with the M4K429RTx modules gives you a ARINC-429 test and simulation board for the Compact PCI bus.