ContentsSCXI-1129 User Manual viii ni.com16 × 16 Matrix Configuration ......................................................................... 2-14Matrix Expansion ............................................................................................ 2-16Hardware and Software Scanning ................................................................................. 2-20Hardware-Timed Scanning ............................................................................. 2-21Hardware-Timed Scanning Using a DMM....................................... 2-21Hardware-Timed Scanning Using External Instruments.................. 2-22Synchronous Scanning ....................................................... 2-23Handshaking Scanning....................................................... 2-23Multimodule Scanning .................................................................................... 2-24Chain Triggering............................................................................... 2-24Example ............................................................................................ 2-24Wire ORed ........................................................................................ 2-25Dummy Entries................................................................................. 2-25Software Scanning .......................................................................................... 2-26Independent Switch Control............................................................................ 2-26Appendix ASpecificationsAppendix BAccessoriesAppendix CSCXI-1129 Block DiagramAppendix DSCXI-1129 Front ConnectorAppendix ECommon QuestionsAppendix FTechnical Support ResourcesGlossaryIndex