Atlona Help Center

KB01089 - How to get an AT-UHD-PRO3 matrix to send IR to a display


The AT-UHD-PRO3 series of matrices allows you the ability to send IR commands into the IR In ports on the back of the matrix which correspond to the matching HDBaseT Outputs (for example IR IN 1 corresponds to HDBaseT output 1 and IR IN 4 is for HDBaseT output 4). This will then allow IR signals to travel over the HDBaseT line and be sent out from the supported HDBaseT receiver and its respective IR emitter (such as the AT-IR-CS-TX).  

To utilize this function:

  • Please start by connecting your IR cable (such one from a third party control system) to the IR inputs on the back of the matrix:

   (S) = Signal and () = Ground

  • Please note, the AT-UHD-PRO3’s IR inputs do not have the ability to supply power to an IR receiver, therefore the IR inputs are optimized for connections with third-party control systems.
  • Do not connect power to the signal or ground pins on the Atlona, this can cause permanent damage to your system.
  • You are able to use a locally powered IR receiver such as one powered by an IR connecting block and simply connect the signal and ground pins to the Atlona’s IR inputs.

Once the IR IN has been connected, we are ready to connect the IR emitter to the HDBaseT receiver:

  • Please note, the AT-UHD-PRO3’s supported HDBaseT receivers typically ship with an included AT-IR-CS-TX This emitter will flash to show it's emitting an IR signal. The AT-IR-CS-TX emitter can be used on the HDBaseT receivers IR OUT port.
  • The AT-IR-CS-TX has the following pin out; Solid stripped wire = Signal (S), plain wire = Ground () :


  • At your supported HDBaseT receiver, connect your IR emitter’s wires to the appropriate pins on the HDBaseT receiver’s IR Out port:

   (S) = Signal and () = Ground

  • Once connected, your pin out at the HDBaseT receiver should be like so:
  • Please note the AT-IR-CS-TX will flash a RED led to show its sending IR signal:
  • Some emitters do not flash and since the human eye cannot see IR, Atlona recommends testing IR with a digital camera (if using a cell phone, use the front camera as this does not have an IR filter as the main camera typically does)
  • Once connected, position your IR emitter over the displays IR eye (typically found on front of the display)
  • With the proper connections confirmed, the AT-UHD-PRO3 matrix will now take the IR signal received at its IR IN ports and automatically pass those through to the corresponding HDBaseT outputs which will then be emitted from the HDBaseT receivers IR OUT port using the AT-IR-CS-TX emitter.
  • For assistance terminating your captive screw connectors, please see this InfoComm video.
  • Please note, if video and audio is passing through the matrix to an output zone, so should the IR signals. There is no special configuration required on this matrix system to pass IR.

If you are unable to pass IR to one output zone but have IR working in other zones:

  • Please double check your wires and ensure that they are in the correct places.
  • Since other outputs have working IR control, let’s swap the CAT cables from a working HDBaseT output with an HDBaseT output that is having issues?
  • After that, swap the IR IN ports between the corresponding two HDBaseT ports we swapped the CAT cables to.
  • With cables swapped, we should be able to send IR signals into a port we know works with another CAT run and if this still has issues, there may be a failure on your IR control system side.
  • If swapping cables allows IR that previously did not work in one port, to work in another, there is a possibility that an IR port can be bad.
  • As a final test, please try another IR IN port coupled with another HDBaseT receiver to confirm if a specific IR IN will not work on any IR IN port or if we found a specific IR IN port that does not work (meaning taking the IR IN cable to another port will allow it to pass).
  • If noticing intermittent IR performance, there may be an issue with IR interference. Please consider isolating your IR emitter or attaching the IR emitter hood (supplied with the AT-IR-CS-TX)

Please note the human eye cannot see IR and thus to test IR, use the front facing (aka "Facetime") camera on a cell phone and point your IR remote at the camera to see a pink/purple light.  

Article ID: KB01089


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