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Random Delay? FMCOMMS5 sink to source

Question asked by mark@SIN on Aug 8, 2017
Latest reply on Aug 10, 2017 by mark@SIN

Dear all,

I am facing a problem of random delay. I am using FMCOMMS5 + Xilinx ZC706 with GNU radio. I added FMCOMMS5 sink and FMCOMMS5 source in GNU radio and made a self-loop from the Tx to Rx. I clocked in my data stream from a file to FMCOMMS5 sink to transmit, and received the data stream from the FMCOMMS5 source. The Tx and Rx was connectors were connected. I compared the transmitted data and received data to monitor the delay. I found that every time I restarted the system, the delay changed.


I need to fix the delay from the FMCOMMS5 sink to source (self-loop) in GNU radio. Is there anybody knowing how I can make it?   



Thanks for help!