National Instruments cDAQ-9138 User Manual

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National Instruments cDAQ-9138 User Manual Manual pdf 10 page image

NI cDAQ-9138/9139 User Manual© National Instruments | ixCounter n HW Arm Signal ....................................................................................... 5-36Routing Signals to Counter n HW Arm Input .................................................. 5-36Counter n Sample Clock Signal................................................................................ 5-36Using an Internal Source .................................................................................. 5-37Using an External Source ................................................................................. 5-37Routing Counter n Sample Clock to an Output Terminal ................................ 5-37Counter n Internal Output and Counter n TC Signals .............................................. 5-37Routing Counter n Internal Output to an Output Terminal .............................. 5-37Frequency Output Signal .......................................................................................... 5-37Routing Frequency Output to a Terminal......................................................... 5-38Default Counter/Timer Routing........................................................................................ 5-38Counter Triggering ........................................................................................................... 5-38Other Counter Features..................................................................................................... 5-39Cascading Counters .................................................................................................. 5-39Prescaling.................................................................................................................. 5-39Synchronization Modes ............................................................................................ 5-3980 MHz Source Mode....................................................................................... 5-40External or Internal Source Less than 20 MHz ................................................ 5-40Chapter 6Digital Routing and Clock GenerationDigital Routing ................................................................................................................. 6-1Clock Routing................................................................................................................... 6-180 MHz Timebase .................................................................................................... 6-220 MHz Timebase .................................................................................................... 6-2100 kHz Timebase .................................................................................................... 6-2Appendix AController Operating System and ConfigurationAppendix BWhere to Go from HereAppendix CNI ServicesIndex