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8-Channel, high voltage, simultaneous sampling, fully isolated A/D board

DNx-AI-228-300, DNA-AI-228-300, DNR-AI-228-300, DNF-AI-228-300


  • (DNR-AI-228-300 shown in photo)
  • 8 differential analog input channels
  • ±300 VDC inputs
  • 350 Vrms isolation (channel to channel and channel to chassis)
  • Simultaneous sampling (one A/D converter per channel)
  • Built-in anti-aliasing filters (@ 48% of sample rate)
  • 120 kHz per channel sample rate (480 kHz board max)
  • 24-bit resolution
  • Gains - 1, 2, 4, 8, 16, 32 and 64

8-Channel, high voltage, simultaneous sampling, fully isolated A/D board
Product Style: What do the "DNx" prefixes mean? "DNA" prefix is for a Cube & MIL Cube Board, "DNR" prefix is for a Rack & MIL Rack Board , and "DNF" prefix is for a FLATRACK board.
Software/Programming: How UEI solutions are used. Hosted - Connected to a PC with Windows, Linux, QNX, VxWorks, RTX, or similar OS. Hosted also is for OPC-UA, Modbus and EtherCAT. Standalone - Controller with Linux or VxWorks OS, Simulink I/O Target or UEILogger. Available options for this product are shown in the drop down menu.
Quantity: $2490
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Typically in stock for shipment in 3-4 weeks. Subject to global supply chain challenges.

DNx-AI-228-300, DNA-AI-228-300, DNR-AI-228-300, DNF-AI-228-300

The DNx-AI-228-300 is an 8-channel fully isolated, high voltage, simultaneously sampling A/D board. The DNx-AI-228-300 features a ±300 VDC input range and 24-bit resolution. This provides ±35.8 µV resolution over the ±300 VDC, G=1 input range.

Each channel also provides an isolated digital I/O line. DOuts are 3.3 V logic while DIns are both 3.3 V and 5 V logic compatible.

An A/D per channel configuration allows channels to be sampled simultaneously at rates up to 120 kS/s each (480 kS/s max aggregate entire board). The A/D per channel configuration virtually eliminates input cross talk and channel settling time issues even when connected to high impedance signal sources.

Each channel is electrically isolated from all other channels as well as from the Cube or RACKtangle chassis. In addition to the isolation, each input is overvoltage protected up to ±300 V (power on or off). All connections are made through a female DB37 series connector.

Software included with the DNx-AI-228-300 provides a comprehensive yet easy-to-use API that supports all popular Windows programming languages as well as supporting programmers using Linux and most real-time operating systems including QNX, INtime, RT Linux, VxWorks, and more. Finally, the UEIDAQ Framework supplies complete support for those creating applications in data acquisition software packages such as LabVIEW, MATLAB/Simulink, or any application which supports ActiveX or OPC servers.

The DNx-AI-228-300 is a member of UEI's popular Guardian series, which provides high levels of user diagnostics. The AI-228-300 board provides both the ability to detect input overvoltage conditions as well as the ability to remotely disconnect the channel from field wiring.



  • PowerDNA
  • UEIModbus
  • UEILogger

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