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Sending a packet once but receiving multiple times at receiver side (GNURadio, Zynq702+FMComms5)

Hello there,

The problem I am facing is may be not solely depends on FMCOMMS5 but also on my grc flowgrpah in GNURadio. I am asking though.

I am sending a '.txt' file once with 100 sequence of 0,1s by using OFDM simulation grc examples in GNURadio and also using a pair of zynq702+FMCOMMS5 set as transceiver. The software simulation transmitted it only once. But when I am transmitting it with FMCOMMS5, it recieves muliple times at the reciever side. That means the '.txt' file continue to receive more than 100 sequence untill I stop simulation with transceiver. 

If anybody can give me some explaination or suggestion for modification of Board configuration or Flowgraph would be grateful. Please use below pictures for my reference model.

Note: I havent done any modification for transmission on both board just connected HDMI plug once for signal visualization in the oscilloscope. 

Thank you.