Hi,
I'm using a mimo (2x2) USRP2 system. Both of the receiver USRP2
receive a PPS- and a Clock-Signal provided by one GPS card. In grc I
use the uhd_mimo_source block and two file_sink to receive and save
the data sent. After starting RX the USRP2 mimo system seems to lock
to the reference clock and reset the timer on PPS. Is this true? Or
do I have to configure the block to do so? If I test the data with
correlation it fails, which seems to be an indicator that at least
the reference clock is not locked on.
Is the uhd_mimo_source block automatically locked to external
reference clock if used or do I have to configure it?