ADLINK Technology NuDAQ DAQ-2500 Series, User Manual

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Table of Contents
4.1.4.4 Bus-mastering DMA Data Transfer ....................................... 23
4.2 D/A Conversion ................................................................25
4.2.1 Software Update........................................................................28
4.2.2 Waveform Generation ..............................................................28
4.2.2.1 Waveform Generation Timing ............................................... 29
4.2.2.2 Trigger Modes.......................................................................... 30
4.2.2.3 Iterative Waveform Generation ............................................. 32
4.2.2.4 Stop Modes........................................................................... 34
4.3 General Purpose Digital I/O...............................................36
4.4 General Purpose Timer/Counter Operation ........................37
4.4.1 Timer/Counter functions basics ...............................................37
4.4.2 General Purpose Timer/Counter modes ..................................37
4.4.2.1 Mode1: Simple Gated-Event Counting................................... 38
4.4.2.2 Mode2: Single Period Measurement...................................... 38
4.4.2.3 Mode3: Single Pulse-width Measurement.............................. 39
4.4.2.4 Mode4: Single Gated Pulse Generation................................. 39
4.4.2.5 Mode5: Single Triggered Pulse Generation ........................... 40
4.4.2.6 Mode6: Re-triggered Single Pulse Generation....................... 40
4.4.2.7 Mode7: Single Triggered Continuous Pulse Generation......... 41
4.4.2.8 Mode8: Continuous Gated Pulse Generation ......................... 41
4.5 Trigger Sources.................................................................42
4.5.1 Software-Trigger.......................................................................42
4.5.2 External Analog Trigger...........................................................42
4.5.2.1 Below-Low analog trigger condition ..................................... 43
4.5.2.2 Above-High analog trigger condition .................................... 44
4.5.2.3 Inside-Region analog trigger condition ................................. 44