TROUBLESHOOTING HUB: How to Troubleshoot the Ethernet Bridge Radio AW900xTR System


  • How do I troubleshoot the 900 MHz Ethernet Bridge Radio xTR system?


​0A-1327-1111 ​0A-1327-1121
​Dual QC Cable (separate Ethernet signal cable and 6 pin circular power cable)​10 Pin Circular QC Cable (power & signal on same cable)
​ ​Kits include the following:
  • Server & Client Radio
  • POE (Power over Ethernet) Injector    (aka DCI - direct current injector)
  • Ethernet cable from POE injector to server radio (black)
  • Quick Connect (QC) cable



Physical Setup & Radio Diagnostics


​ Radio LED Diagnostics           
​ ​ ​ ​ ​ ​ ​Radio Label.png LED LABEL                                  DESCRIPTION                             
PowerON = Power
Off = No Power
RF ReceiveFlashes steady - Client Radio
​RF Transmit​Flashes Steady - Server Radio
Ethernet LinkON = Link
Off= No Link
Channels 1, 2, 4, 8  16, 32Sum values to determine current channel - This channel is our location in the spectrum.
Link QualityProvides a basic view of our Link Quality from server to client radios.


Questions to ask in the scenario?

  • Have there been any recent network changes done?
  • Did any equipment (e.g. computer, radios, etc...) get moved recently?
  • Are all proper cables plugged in at computer?
  • Has there been any recent power outages or storms that have come through?

Section 1: No Communication to Server Radio

NOTE: Check for any network equipment or setting changes. (May need to involve IT/Networking personnel)



POE Injector/​DC Injector (DCI)

1. Verify the Green LED on the DC Injector is lit (see illustration above):

  • If LED is not lit proceed to check the following:
    • Verify power cable is connected to the POE and wall outlet. DD2627719
    • Verify that power outlet/power strip has good power. DD2154044
    • If all connections are good and power LED still not lit replace POE. DD2421105
  • If LED is lit proceed to step 2.

2. Check POE cable connections following: How to hook up the DC Injector for Ethernet Bridge Radios, DD2099766. 

  • If connections are not correctly connected proceed to checking the following:
    • If cables not connected proceed to: DD1999045.
    • If Cat5 cable not connected proceed to: DD2548984.
    • If Cat5 cable is loose proceed to: DD3248375.
    • If Cat5 cable has failed proceed to: DD1994623.
  • If connections are all connected properly and functional proceed to step 3.

3. Power cycle the POE Injector.

  • Unplug power cable and plug back in. DD2002012.
  • If communication issue is still present continue to next section for troubleshooting or Contact Daktronics.

               Server Radio Pics.jpg

Server Radio

1. Verify the Power LED is on.

  • If no power LED lit on radio proceed to check the following:
    • Check voltage to radio, if getting 18 VDC and POE has not been replaced proceed to: DD2154044.
    • Check voltage to radio, if getting 18 VDC and POE has been replaced proceed to: DD2088201.
  • If power LED is lit continue to Step 2.

2. Verify the Eth Link LED is lit.  This will light up when the radio is able to detect another device such as the network or a computer connected to it.

  • If Server radio has no Link LED proceed to:
    • Check RJ-45 connection between the network/computer and server radio if loose proceed to: DD2350347. 
    • If POE is tested good then replace Cat5 cable(s) between network/computer & POE and Server Radio & POE: DD1994623.
    • If all cables have been checked replace POE: DD2906292.
  • If all LEDs are lit properly continue to next section for further troubleshooting or Contact Daktronics.

Section 2: No Communication between Radios

Client Radio

  1. Verify the client radio has power LED lit.
    1. If no power LED on radio proceed to:
    • Check connection to display from Client radio; reseat or plug in if disconnected: DD2390723.
    • If connection/cable is good replace radios: DD1993462.
  2. Check for any diagnostic LEDs lit on the radio at the display.
    1. If Link LED not lit proceed to:
    • Reseat Cat5 cable to sign Quick Connect (QC): DD3326536
    • Connections secure and tested good then replace radios: DD2872076
  3. Verify antennas have proper orientation.
    • Check antenna on radio and replace if broken/damaged or missing: DD2866552.
    • Adjust antennas to best orientation: DD2825922.
      • Best orientation is vertical and parallel.  See Antenna Guide for more information
  4. Power cycle the display/client radio following: How do I reboot my Galaxy or Galaxy Pro Display?, DD3511944
    • DD2527710.
    • If still unable to connect to sign proceed to next section for further troubleshooting or Contact Daktronics.

Section 3: No Communication between Client Radio and Display

  1. For 0A-1327-1111 radios, verify the Ethernet cable connection on the back of the display (J32): DD2857748.
  2. Power cycle the display following How do I reboot my Galaxy or Galaxy Pro Display?, DD3511944 .
    • DD2527710.
    • If still unable to connect to sign proceed to next section for further troubleshooting or Contact Daktronics.

Section 4: Full Communication Restored and Connection Successful

  1. If still unable to communication, it's possible communication is intermittent or there is signal noise in the area.  It's also possible there is another device on the network with the same IP. 
    • Monitor the radio frequency and traffic following: DD2167938.
  2. For intermittent communication, verify radio line of site and antenna orientation. See the Physical Setup & Radio LED Diagnostics section for guides/pdfs that optimize radio communication.

Common Questions

Some of the information came directly from

Q: ​Can the sever radio be installed indoors?
​   A: Daktronics recommends installing the server radio outside (POE injector inside) in direct line of site of the client radio.  The signal of a radio will be attenuated when passing through glass (especially tinted glass) or walls.  The amount of attenuation depends on the material the signal is traveling through.
​Q: What is the range of a non-line-of-sight scenario?
​   A: "Every non-line of sight is unique and the range depends on how many obstructions are in the way, and the size, shape, and density of each obstruction. Foliage is easier to penetrate than a building."
​Q: Can I use a POE switch/router instead of the POE provided injector?
​   A: AvaLAN radios use forced POE injection and do not respond to 802.3af or 802.3at supported POE switches. A POE converter is required to power an AvaLAN radio. part # AW-POE-CON.

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KB ID: DD3071851

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DISCLAIMER: Use of this content may void the equipment warranty, please read this DISCLAIMER prior to performing any service of the equipment.