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NI multifunction I/O devices integrate essential measurement and control capabilities like analog input/output, digital I/O, and counter/timer functions into a single device. This combination of features reduces hardware complexity, simplifies test system design, and supports diverse applications from data acquisition to automation.
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Multiple gain settings let you optimize accuracy based on your signal levels. Lower input ranges use the same ADC resolution, so each bit measures a smaller value.
Recommended Uses
NI multifunction I/O input devices with simultaneous sampling have one ADC per channel for a cleaner measurement and sample rates that don’t slow down as you add more channels.
Recommended Uses
Most NI multifunction I/O devices include four 32-bit counter/timers with a 100 MHz base clock (20 MHz base clock for separate frequency generator function).
Recommended Uses
Capture transients, get better time resolution, or use software averaging to reduce noise on any of the 20+ NI DAQ devices that sample between 1 MS/s and 14 MS/s.
Recommended Uses
More channels on a single device lowers the cost per channel. For even more channels, install multiple PXI Express DAQ modules in a PXI Express chassis.
Recommended Uses
A multifunction I/O device and PXI multifunction I/O module combines flexible channels, sample rates, and outputs for reliable data acquisition and control—ideal for applications such as laboratory automation, research, and design verification.
All NI multifunction I/O hardware without a user-programmable FPGA is programmed using the NI-DAQmx driver, which includes APIs for NI LabVIEW and other text-based programming languages. These devices can also be used with NI FlexLogger™ software for no-code data logging and visualization.
FPGA-equipped devices require the LabVIEW FPGA Module for full programming and customization.
There are several: USB DAQ devices offer portability and quick setup for benchtop testing, while PCI and PXI boards deliver high performance for automated systems. Ethernet modules enable remote and distributed measurements, and modular NI platforms like CompactDAQ and CompactRIO combine multifunction I/O with real-time processing for advanced control and monitoring.
These can include the number and type of channels, such as analog, digital, and counter or timer, along with resolution and sampling rate to ensure accuracy. Other considerations include connectivity options like USB, PCI, PXI, or Ethernet, software compatibility for easy integration, synchronization capabilities, signal conditioning, scalability, and environmental specifications such as operating temperature and isolation.
Advantages include high accuracy and reliability, broad signal support (analog, digital, counters), and easy integration with NI software like LabVIEW, NI-DAQmx, FlexLogger, TestStand, and DIAdem. Engineers also benefit from modular scalability, robust synchronization features, and support from NI and a community of users.