Instructions for the new snapshot data plotter
    
Before I created the Snapshot Data Plotter, it was necessary for me to pick through a snapshot record and create image files for the reader to view and analyze. This had several downfalls. As technicians, we do not all have the same diagnostic approach and this inadvertently caused me to narrow the view to what I wanted to look at. To create and display images of every combination of graphical data (and the value of each point) would create a web page that was huge in size and take a very long time to make. I believe that the Snapshot Data Plotter is both better for the reader and myself.

Instructions For Use

When the web page loads, you should see the following: (note: the graph data will vary)

The data plotter will default to displaying the first four PIDS in two separate graphing areas. By checking or unchecking the "Dual Trace" boxes, you can change each of the two graphing areas to display one or two PIDS. 

To change the PID displayed by a particular trace, you can pick one of two methods. The first is by pressing the Prev or Next button for the trace.

The other option is to click on the drop down list box for the trace you wish to change.

The graphing area represents a specific amount of time and can contain as few as 50 and as many as 400 plot points. This information can be found in the area circled below. 

The current frame (and corresponding data) being pointed to on the graph, is where the green vertical line intersects the graph. 

To move the frame pointer, you can simply click anywhere inside the graphing area with your mouse or click on the arrows below

For proper perspective while viewing the graphs, it is necessary to know what the upper and lower vertical limits are. This information is found here

You may wish to change the upper and lower limits. This can be done with the following buttons. Take note however, that the minimum cannot be changed to more than the lowest value nor lower than the highest value. Simply type in the new value into the text field and press the appropriate button. For example, the following will change the max upper limit to trace 1

If you make a mistake and want to change the minimum and maximum values back to their original values, simply press the appropriate R button. Note that this will only affect the current PID.

I hope you enjoy this new data plotter. If you have further questions or suggestions, please feel free to write.

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 Copyright 2001 Flatrater Diagnostics