root@trb-dev:/home/mod6# dd iflag=fullblock if=/dev/ttyUSB0 of=fg1.fg4.bin
^C2368668+0 records in
2368668+0 records out
1212758016 bytes (1.2 GB) copied, 163288 s, 7.4 kB/s
root@trb-dev:/home/mod6# ent fg1.fg4.bin
Entropy = 8.000000 bits per byte.
Optimum compression would reduce the size
of this 1212758016 byte file by 0 percent.
Chi square distribution for 1212758016 samples is 231.89, and randomly
would exceed this value 75.00 percent of the times.
Arithmetic mean value of data bytes is 127.4992 (127.5 = random).
Monte Carlo value for Pi is 3.141630371 (error 0.00 percent).
Serial correlation coefficient is -0.000087 (totally uncorrelated = 0.0).