Troubleshooting Hub - Ethernet Bridge Radio AW900xTR System Communication.

Potential Symptoms

  • Unable to update display through Ethernet Bridge Radios (EBR's)
  • Communication issues with display using Ethernet Bridge Radio communication.


Product Family: Message Displays
Product: Galaxy, Galaxy Pro, GS6, GC6, GP4, GPR, GP3
Component: Ethernet Bridge Radios (EBR)
Control: Ethernet Bridge Radio Communications


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

This troubleshooting article requires the EBRD utility and a functional knowledge of its operation. Please consult the articles below for instruction as needed.

Radio LED Diagnostics
​ ​ ​ ​ ​ ​ ​Radio Label.png r

LED Indicator

Power - On Solid has power, Off has no power

RF Receive - Radio Reception is occurring when flashing



RF Transmit - Radio Transmission is occurring when flashing

Ethernet Link - On solid Link, Off No link

Channels 1, 2, 4, 8  16, 32 - Add the numbers lit to determine Channel setting.
Link Quality - Basic view of Link Quality between Server and Client Radios

Note - For more information regarding Radio Led indicators please reference the EBR Manual, DD1685027. See section 3. Maintenance


Troubleshooting Steps:

  • If there is no communication to server radio, begin at Step 1.
  • If there is no communication between the client and server radio, begin at Step 6.
  • If there is no communication between client radio and display, begin at Step 10.

  • If communication is intermittent, begin at Step 12.

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


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

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

3. Power cycle the POE Injector.

               Server Radio Pics.jpg

4. Locate the server radio. Refer to above image. Is the Power LED on?

5. 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.

6. Locate the client radio and verify it has power LED lit.

7. Check for any diagnostic LEDs lit on the client radio at the display.

8. Verify antennas have proper orientation.

9. Power cycle the display/client radio following:  Galaxy, No communication to display, Client radio or controller is locked up; DD2527710. For further reference, consult How do I reboot my Galaxy or Galaxy Pro Display? DD3511944.

  • If still unable to connect to sign proceed to next section for further troubleshooting or Contact Daktronics.

10. Verify the Ethernet/power cable connection on the back of the display. Connect cables if they are not connected.

11. Power cycle the display following How do I reboot my Galaxy or Galaxy Pro Display?, DD3511944 .

12. 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. 

KB ID: DD3071851

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