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Re: [Discuss-gnuradio] LLLL error printout
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From: |
Josh Blum |
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Subject: |
Re: [Discuss-gnuradio] LLLL error printout |
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Date: |
Sat, 25 Aug 2012 14:03:50 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120714 Thunderbird/14.0 |
On 08/25/2012 01:58 AM, Qing Yang wrote:
> Hi Josh,
>
> I also meet the "L" output. Does this mean the USRP cannot send the packet
> out in time? What should I do to depress or avoid this error message?
>
Can you share under what conditions this occurs? For example, are you
experimenting with the stream tags? What hardware is involved?
There is a measurable latency between host and USRP. The time on the
packet should be greater than current usrp time + latency + some epsilon.
> Furthermore, can you explain the meaning of "U" and "O" output to the
> console?
http://files.ettus.com/uhd_docs/manual/html/general.html#overflow-underflow-notes
http://files.ettus.com/uhd_docs/doxygen/html/metadata_8hpp.html
-josh