root@trb-dev:/home/mod6/fg2# dd iflag=fullblock if=/dev/ttyUSB0 of=fg2.fg3.bin
^C2116784+0 records in
2116784+0 records out
1083793408 bytes (1.1 GB) copied, 145352 s, 7.5 kB/s

root@trb-dev:/home/mod6/fg2# ent fg2.fg3.bin
Entropy = 8.000000 bits per byte.

Optimum compression would reduce the size
of this 1083793408 byte file by 0 percent.

Chi square distribution for 1083793408 samples is 242.76, and randomly
would exceed this value 50.00 percent of the times.

Arithmetic mean value of data bytes is 127.4976 (127.5 = random).
Monte Carlo value for Pi is 3.141747137 (error 0.00 percent).
Serial correlation coefficient is 0.000028 (totally uncorrelated = 0.0).
root@trb-dev:/home/mod6/fg2#