9-6 | ni.comChapter 9 Digital Routing and Clock GenerationUsing RTSI Terminals as Timing Input SignalsYou can use RTSI terminals to route external timing signals to many different M Seriesfunctions. Each RTSI terminal can be routed to any of the following signals:• AI Convert Clock (ai/ConvertClock)• AI Sample Clock (ai/SampleClock)• AI Start Trigger (ai/StartTrigger)• AI Reference Trigger (ai/ReferenceTrigger)• AI Pause Trigger (ai/PauseTrigger)• AI Sample Clock Timebase (ai/SampleClockTimebase)• AO Start Trigger (ao/StartTrigger)• AO Sample Clock (ao/SampleClock)• AO Sample Clock Timebase (ao/SampleClockTimebase)• AO Pause Trigger (ao/PauseTrigger)• Counter input signals for either counter—Source, Gate, Aux, HW_Arm, A, B, or Z• DI Sample Clock (di/SampleClock)• DO Sample Clock (do/SampleClock)Most functions allow you to configure the polarity of PFI inputs and whether the input is edgeor level sensitive.RTSI FiltersYou can enable a programmable debouncing filter on each PFI, RTSI, or PXI_STAR signal.When the filters are enabled, your device samples the input on each rising edge of a filter clock.M Series devices use an onboard oscillator to generate the filter clock with a 40 MHz frequency.Note NI-DAQmx only supports filters on counter inputs.The following is an example of low to high transitions of the input signal. High to low transitionswork similarly.Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
