root@trb-dev:/home/mod6/fg5# stty -F /dev/ttyUSB0 115200 raw -echo -echoe -echok root@trb-dev:/home/mod6/fg5# dd iflag=fullblock if=/dev/ttyUSB0 of=fg5.fg1.bin ^C3025778+0 records in 3025778+0 records out 1549198336 bytes (1.5 GB) copied, 196596 s, 7.9 kB/s root@trb-dev:/home/mod6/fg5# ent fg5.fg1.bin Entropy = 8.000000 bits per byte. Optimum compression would reduce the size of this 1549198336 byte file by 0 percent. Chi square distribution for 1549198336 samples is 261.67, and randomly would exceed this value 50.00 percent of the times. Arithmetic mean value of data bytes is 127.5021 (127.5 = random). Monte Carlo value for Pi is 3.141614273 (error 0.00 percent). Serial correlation coefficient is 0.000001 (totally uncorrelated = 0.0). root@trb-dev:/home/mod6/fg5#