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Real-time streaming of IQ data

Question asked by Michael_Betz on Dec 15, 2011
Latest reply on Dec 20, 2011 by tabbott
Dear Agilent support,

we have an N9010A EXA Signal Analyzer with the VSA software.

What i would like to do is to record a very long time trace (several hours) to harddisk for offline analysis.

Ideally, i was thinking about a small C-application, remote controlling the analyzer over some LAN based protocol (e.g., VISA).

I found some examples, how to get single time traces with IQ data (up to the length of the internal buffer of ~ 4 MSamples). So if put the acquire command in a loop, i'll get continuous data.

My question is, can I acquire a realtime trace without gaps this way? This would be possible if there is some kind of double buffering implemented in hardware. Then I could read out one buffer while the measurement continues and fills the second buffer.

I speculate that this should be possible because the VSA software is able to do "real-time" measurements as well.

Thanks for any hints on this subject.

Best wishes