Chapter 2 Using the SCXI-1129© National Instruments Corporation 2-13 SCXI-1129 User ManualFigure 2-8. 8 × 32 Matrix Configuration4 x 16 MatrixRelays4 x 16 MatrixRelays4 x 16 MatrixRelays4 x 16 MatrixRelaysC0–C15R0–R3R4–R716 columns16 columns16 columns16 columns4 rows4 rows4 rows4 rows0123012301230123AB0AB1AB2AB3High-VoltageRearSignalConnectorDigitalComm.Low-VoltageRearPanelSignalConnectorSCXIBusConnectorB1R0 = Bank 1 Row 0B1C0 = Bank 1 Column 0Each row and column consists of two wires. One for source (+) and one for return (–).Note: The analog bus relays have a built-in safety interlock. For safety reasons, they cannot be closed unlessa terminal block is connected.0123Com0Com1Com2Com3SCXIBusInterface128 K x 8 SRAMScan List MemoryDigital Interfaceand Control(FPGA)Calibration EEPROMSCANADVDEXTRIGINFront SignalConnectorConnection RelaysAnalog Bus RelaysSCXI-1335TerminalBlockSCXI-1129ModuleC16–C31
