Daktronics

NPN-6x00/5x00 Series: What do status lights on the receiver cards mean?

Topic

  • What do the status lights on NPN receiver cards mean?
  • Why are indicator lights on NPN receiver cards blinking fast, rapidly, or irregularly?
  • What do the leds on the NPN receiver cards mean?

Environment

  • Product Family: NPN Series Displays (Narrow Pixel Pitch)
  • Product: NPN Series
  • Components: Receiver Card

Steps

Notes: Using this concept you are able to identify connections that were not made during the initial installation, and other connections that needed to be reseated. Only power and interconnections are required to check these statuses (minus the control input/output locations), so it's a great early diagnostic tool.

The Receiver card that plugs into the hub board has two LEDs on it. 
  • DS4 (right led) represents the connection to the next hub board (output).
2022-11-14_11-11-47left slow.gif
  • DS3 (Left led) represents the connection from the previous hub board (input). 
2022-11-14_11-11-47right slow.gif

For diagnosing potential issues:
A slow flash indicates that the communication with the next hub board is good.
2022-11-14_10-21-26 reduced.gif
  • A fast flash indicates that the communication is bad. ​​​​​​​

KB ID: 000026594

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