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[Discuss-gnuradio] Metafile Sink Execution Time

From: Jonathan Fox
Subject: [Discuss-gnuradio] Metafile Sink Execution Time
Date: Mon, 25 Aug 2014 15:12:10 -0400

How long it takes for the Metafile Sink to began recording data?

I have a "No GUI" script that is a simple USRP source, throttle, and metafile sink. All have a 1M sample rates; the metafile sink has a relative rate of change of 1, 1M segment size, and have a detached header.

I start my script up I get the usually GNU Radio feed back (e.g. "Opening a USRP2/N-Series device..."), I get the "Press Enter to quit:", however post processing of collected meta data has shown that I can not immediately start my data collection as it won't collect the leading edge of the signal, I need to wait several seconds before proceeding. Why does this happen and is it possible to get a prompt on when the metafile sink has started recording?



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