1. EKG looking graph... if I get 3 channels from NI-DAQpad and put them on one waveform there are one over another.. how to "separate them"
2. Is it easier to acquire 3 channels separatly and then join them graphically on front panel
If you are using graphs, you have to represent each channel's data on a seperate graph to avoid overlapping of individual channel data
However, if you represent data on a chart, just increase plot legend to show three channels and right click on the chart -> select 'stack plots'.
Now you will get 3 stacked plots with different y axis but same x axis
3. How to simulate various paper speed of real EKG device...
Well, in an EKG, the stylus moves on the chart and you set the rolling speed to plot with variable x axis scaling
This is the closest you can do to achieve the same on a Virtual instrument : Just keep setting the x axis scale programatically to make the plot appear like it is running faster or slower.
This can be done using "X Scale.Offset and Multiplier:Multiplier" property node of the graph, Look at attached VI
4. Generally how to make display look as close as it get to the original
Right click on charts, go to advanced, select update mode and select any one of the following modes
- strip chart
- scope chart
- sweep chart
Decide which best suits your purpose
Hope this helps
Regards
Dev
Message Edited by devchander on 01-20-2006 06:32 AM
