Chapter 9 SC-2057©National Instruments Corporation9-3SC-205X Series User ManualIf the SC-2057 is connected to the VXI-DIO-128 connector labeled INPUT,the accessories connected to the SC-2057 will need to supply only digitalinputs. If the SC-2057 is connected to the VXI-DIO-128 connector labeledOUTPUT, the accessories connected to the SC-2057 will need to accept adigital input from the VXI-DIO-128 board.Use a type NB1 cable to connect the SC-2057 and your signal conditioningaccessories. When using SCXI modules with the SC-2057, you will needto use the SCXI-1348 cable adapter in addition to the type NB1 cable. Seethe SCXI-1348 Cable Adapter Installation section for specific informationon using the SCXI-1348 cable adapter.Connect one end of the type NB1 or SCXI-1348 cable to one of the 50-pinconnectors on the SC-2057; the other end will be connected to the signalconditioning accessory. Make this connection with the VXI-DIO-128 andthe signal conditioning accessories powered off, see Figures 9-2through 9-8.Warning Do not connect the SC-2057 to a board for which it is not designed. Suchconnection can damage the SC-2057 and any or all boards/accessories connectedto the SC-2057 and VXI-DIO-128. National instruments is NOT liable for anydamages resulting from incorrect connections.ConnectorsThe SC-2057 has two 96 pin connectors, P1 and P2, that you can use toconnect the VXI-DIO-128 to the SC-2057. Only one connector is neededto connect the SC-2057 to the VXI-DIO-128; the other connector is afeedthrough of the signals from the VXI-DIO-128. You can use thisfeedthrough connector to access data lines not being used by theaccessories connected to the SC-2057.The SC-2057 has two 50-pin ribbon cable connectors that you can use toconnect with signal conditioning accessories. The first 50-pin connector,J1, provides ports 0–3 or 8–11 from the VXI-DIO-128, depending on which96-pin connector on the VXI-DIO-128 is connected to the SC-2057. Thesecond 50-pin connector, J2, provides ports 4–7 or 12–15 from theVXI-DIO-128, depending on which 96-pin connector on the VXI-DIO-128is connected to the SC-2057.J1 and J2 are set up with a DIO-32F pin connector, which allows theVXI-DIO-128 to be connected to the same signal conditioning accessoriesavailable to the DIO-32F boards, provided that no handshaking is neededbetween the VXI-DIO-128 and the accessory.
