DNx-MUX-414 – 14 Channel 1-by-3 Multiplexer/switch Interface

The DNR/DNF/DNA-MUX-414 provides 14 independent one-by-three switches for use with UEI’s RACKtangle, FlatRACK and Cube chassis respectively. The MUX-414 boards are designed for use in a wide variety of switching and digital control applications and in particular making connections is SIL applications. Each channel provides a “common” terminal connected to three independent SPST (Form A) contacts. In a typical SIL application, this allows each flight computer signal to be connected to the actual trainer, a simulated device, a third test or error signal, or left open to simulate a broken wire or other open circuit condition.



  • DNR/DNF/DNA-MUX-414 for RACKtangle/FlatRACK/Cube chassis
  • 14 fully isolated 1 x 3 channel multiplexer/switch
  • Ideal solution for maximum flexibility SIL connections
  • ±48 VDC / 34 Vrms
  • 0.2 Ohm resistance (not including cabling)
  • 1 A continuous load current rating
  • 3 A surge current (<100 mS)
  • 250 Hz update rate

Each channel is capable of switching voltages up to ±48 VDC, AC waveforms with peaks less than ±48 VDC or sinusoidal signals up to 34 Vrms. Each channel is rated for continuous operation at 1 A DC or AC rms with a switch resistance of less than 0.2 Ohm (typical, not including external cables).

All relays default to “open” on power up/reset. Switching rates up to 250 Hz are supported and all channels default to break-before-make relay operation. Each board provides 350 VDC isolation between channels, as well as between the board, cube and other installed I/O boards.

All connections are made through a convenient 62-pin D connector ensuring no problems obtaining mating cables or connectors. Users may also connect the DNx-MUX-414 boards to our popular DNA- STP-62 screw terminal panel via the DNA-CBL-62 cables. The cables are fully shielded and are available in 1, 3, 6, 10 and 20 foot lengths.

The DNx-MUX-414 series includes software drivers supporting all popular operating systems including: Windows, Linux, QNX, VXWorks, RTX, and other popular Real-Time Operating Systems. Windows users may use the UEIDAQ Framework which provides a simple and complete software interface to all popular Windows programming languages and data acquisition and control applications (e.g. LabVIEW, MATLAB).

I/O Chassis
Model No.


RACKtangle ®


For DAQ chassis options, click here.