hi,
search the example for plotting multiple waveforms
regards timo
another hint:
if the settings (e.g. sample rate) of all three channels are equal, you can use one DAQmx read vi to collect the meas. values.
physical channels= "Dev1/ai0:2" aquires ai0, ai1 and ai2
for examples use the example finder (daq mx, analoge voltage..)
-timo