rx_time is the time something upstream was received. This could be the
time of the first sample received by a USRP:
https://gnuradio.org/doc/doxygen/classgr_1_1uhd_1_1usrp__source.html#a8ba918061af928ee7c01e7124580eb82
rx_time could also be the time a packet was received, or could be set by
other blocks.
There is a utility called gr_read_file_metadata that installs with GR,
but I haven't tried it yet.
On 01/31/2018 05:37 PM, Zhongyuan Zhao wrote:
Hi
I have several questions regarding the rx_time in the metadata file
sink, https://gnuradio.org/doc/doxygen/page_metadata.html
1) What is exactly the timestamp? The moment first sample is recorded on
the hard drive?
2) Is there an example to convert rx_time to readable format?
3) Is there an way to timestamp the IQ data at the moment they are
generated by USRP?
Thanks.
Zhongyuan Zhao
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