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[Discuss-gnuradio] Why is my USRP N210 front panel LED E light blinking

From: LD Zhang
Subject: [Discuss-gnuradio] Why is my USRP N210 front panel LED E light blinking rapidly all the time?
Date: Thu, 20 Sep 2012 16:43:20 -0700


As a new user I have just made the uhd_fft.py to display something. I use the LFRX daughter board for initial testing. I have a concern with the front panel LED E light. While the uhd_fft.py is working, both the LED C and E lights are on solidly which is expected. When shutting off the uhd_fft.py, the two lights went off also. But the LED E light starts to first slowly blink and then to pick up speed in blinking. The E light being the ref lock, I am guessing the rx board doesn't like not having a ref? It got really annoying watching the fast blinking light. I fear that this might not be good for the overall health of the system. The only to cure this seem to be power cycle, which is not preferred. What should I do to prevent this or to ensure that everything is working correctly and there is no system complaints?


LD Zhang

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