National Instruments Product Guide - 2008 - (Page 24) Digital I/O Industrial digital I/O (DIO) devices are suitable for a wide range of automation applications including controlling switches, relays, actuators, fans, lights, and motors. NI DIO devices have specialized industrial features for high reliability: Programmable power-up states ensure actuators and relays begin in a known state Watchdog timers detect and respond to fault conditions Change detection triggers applications with minimal processor usage Programmable input filters remove glitches and spikes Isolation provides safety and prevents ground loops Counter/Timers Counter/timer devices, which feature up to eight 32-bit counters, provide a variety of time-related measurements and fulfill critical timing functions as components of complex measurement systems. Use counter/timers for: Frequency measurement Edge/event counting Pulse-width measurement Event timestamps Analog Output Analog voltage and current output devices cover a full spectrum of test and control applications from basic software-timed output to complex high-speed waveform generation. Analog output devices feature: Up to 1 MS/s per-channel arbitrary waveform generation 12-, 13-, or 16-bit resolution ±10 V voltage or 0 to 20 mA current outputs High-channel density Quadrature encoders Multidevice synchronization Frequency generation Digital triggering and external clocking Frequency division Simultaneous updates Pulse-train generation Eight digital I/O lines Pulse-width modulation Two 24-bit counter/timers Features Low-Cost Digital I/O Up to 96 5 V TTL/CMOS lines for PCI, PXI, PCMCIA, and USB Features High Voltage Up to 48 VDC channel-to-channel isolation for industrial applications Features Software-Timed Outputs Simultaneous software-timed single-point updates across many channels for control applications 30 V Bank-Isolated Digital I/O Up to 64 sourcing or sinking digital I/O lines with 24 V logic levels High Precision High-stability (75 ppb) timebase and GPS-based synchronization for high-precision measurements Waveform Generation Onboard FIFOs and high-speed update rates for simple sine, square, and triangle waves or more complex user-defined waveforms Up to 150 V Digital Relays Mechanical or solid-state relay devices with up to 150 VDC channel-to-channel isolation Learn more at ni.com/digitalio Learn more at ni.com/digitalio Learn more at ni.com/daq 24 ni.com http://ni.com/digitalio http://ni.com/digitalio http://ni.com/daq http://ni.com
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