I am using the Pluto SDR in gnu radio running on a raspberry pi 4. I am a little confused how the buffer works in the FMCOMMS-2/3/4 block in gnu radio. In gnu radio, is the Pluto operating in "burst" mode by default? Say i'm using the FMCOMMS-2/3/4 source block with the buffer size set to 32,768. Does this mean that the Pluto captures a full, uninterrupted 32,768 samples at the specified sample rate before before sending any complex samples out of the source block in gnu radio? Does this mean that there is some dead time where the FMCOMMS-2/3/4 source block is not outputting any samples while the Pluto is collecting samples? Likewise for transmit, does the Pluto wait for the entire buffer to be filled before transmitting anything?
I am pretty new to gnu radio.