-plot "2012-07-26/144016.dat" using 1:3 with lp title "ADC4", "2012-07-26/144016.dat" using 1:5 with lp title "ADC5"
+
+plot "< tail --lines=200 2012-08-01/101003.dat" using 1:3 with lp title "ADC4", "< tail --lines=200 2012-08-01/101003.dat" using 1:5 with lp title "ADC5"#, "< tail --lines=200 2012-08-01/101003.dat" using 1:2 with lp title "DAC"