plotting multiple analog waveform

[jennifer CLINTT]

Hello everyone,

I am trying to read three analog channels and plotting multiple graphs. see attached sheet and do send me your suggestion to remove the error.

Thanks and looking forward to your reply.

[orko]

Your error is caused by trying to connect the upper 1D array to the picture control input on the Plot Waveform.vi. To remove the error, delete those broken wires and wire an empty picture control constant instead to the Plot Waveform.vi

As far as getting all three 1D arrays to plot on one Chart, you could wire the output of the build array (which is a 2D array) to the chart. You may have to insert a transpose 2D array in there as well. See below for an example:

[T_Schott]

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