root@trb-dev:/home/mod6/fg4# dd iflag=fullblock if=/dev/ttyUSB0 of=fg4.fg2.bin
^C2283932+0 records in
2283932+0 records out
1169373184 bytes (1.2 GB) copied, 152985 s, 7.6 kB/s

root@trb-dev:/home/mod6/fg4# ent fg4.fg2.bin
Entropy = 8.000000 bits per byte.

Optimum compression would reduce the size
of this 1169373184 byte file by 0 percent.

Chi square distribution for 1169373184 samples is 279.94, and randomly
would exceed this value 25.00 percent of the times.

Arithmetic mean value of data bytes is 127.5001 (127.5 = random).
Monte Carlo value for Pi is 3.141588973 (error 0.00 percent).
Serial correlation coefficient is -0.000002 (totally uncorrelated = 0.0).
root@trb-dev:/home/mod6/fg4#