I have been getting a lot of ‘iU’ outputs when I run my scripts, and I
found in the FAQ (here: http://gnuradio.org/trac/wiki/UsrpFAQ/Gen)
"u" = USRP "a" = audio (sound card) "O" = overrun (PC not keeping up with received data from usrp or
“U” = underrun (PC not providing data quickly enough)
aUaU == audio underrun (not enough samples ready to send to sound
uUuU == USRP underrun (not enough sample ready to send to USRP sink)
uOuO == USRP overrun (USRP samples dropped because they weren’t
read in time.
So what type of underrun does the ‘i’ represent?