how can i measure instantaneous voltage of an anlog waveform

[vanaddana]

Hi, All

I am new with LABVIEW need help urgently, and want to plot the stirling engine cycle PV graph, I have mounted suitable hardwares to the engine, pressure sensor with range of (0v-to5v) and position metet of range(0v-to10v) I  have aquired both pressure and volume signals  by DAQ assistant and BNC 2110. they are smoothly like sinusoidal waveform. How can I divide and measure at least 20 instantaneous voltage in one cycle and record the obtained data in two arrays for feeding XY graph wave form??. I have attached a simulation of idea for clarification. please attach your suggested code if you can thank you.

[adigator]

Hi,

If I get you right, you need to acquire signals from two sensors simultaneously and present the data in a xy graph.

So you should write your data from one whole cicle to two arrays, build a xy graph from that data and plot.

Since your new to LabVIEW I strongly recommend you to spend some time on the basic principles. This is a good start.

http://www.ni.com/gettingstarted/labviewbasics/

regards,

adigator

[vanaddana]

Yes exactly, tank you I am reading the material, I would be pleased if some body can send a code.