Hello, What you will want to do is the following:
1) First, place a waveform chart on the front panel by right-clicking on the panel and selecting a Waveform Graph under the [Graph Inds] panel 2) Press [Ctrl]+[E] to go to the block diagram 3) [Right-click] on the diagram and choose [Signal Manipulation] >> [Split Signal] 4) You will want to wire the signal split icon to the output of your PCI device. 5) Now, you can compare the signals to determine the instantaneous maximum and plot the resultant signal. To do this, place a "waveform min and max.vi" SubVI on your block diagram. You can find this subVI by [right-clicking] on the block-diagram, selecting [All Functions]>>[Waveform]>>[Analog Waveform]>>[Waveform min and max.vi] Finally, you can use the "max" output of the subVI to plot the instantaneous max value of all incoming waveforms. I hope this helps. You may want to refer to the following discussion thread for example programs that perform similar actions: http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RNAME=ViewQuestion&HOID=506500000008000000B99A0000&ECategory=LabVIEW.LabVIEW+General Please let me know if you need further assistance. Have a great day! Kind Regards, Joe Des Rosier National Instruments
