Large Time Graph Dissapearing

[Moap]

Basically, the problem that I am having is when I am using an oscilloscope to measure the voltage in my capacitor.  When I am using a large time amount such as 7seconds to fully fill the capacitor, I usually set the x-axis to be equal to about 500 ms/div.  For some reason, whenever it goes on to the next part of the graph (because it cannot fit all on one screen), it gets rid of the previous graph, thus leaving me with only the part that is being graphed at the moment.  This creates a problem, because at the end when I want to go back and find voltage points, the program only allows me to see the current part of hte graph on the screen, and wont let me go back to see any other part of the graph.  Any ideas?   

[Tien_P]

Hi Moap,

Most scopes operate this way, old data will be cleared once the signal reached the end.  If you want to see all your data in Multisim, select View>>Grapher View.  In here, you can see all your data and you also zoom in/out to any section.

[Moap]

That did help, the only problem is that in that window, after about 5 seconds it changes and gets rid of any graphing progress up to that point. Why?

[Tien_P · Accepted solution]

See if this helps, select Simulate>>interactive simuation settings>>Analysis Options, increase the "maxium number of points".

[Moap]

Thanks, that seems to have fixed the problem.  What amount would you reccomend using?

[Tien_P]

Your simulation data is stored with your Multisim file, the more data you stored the larger the file will be so your file may a few seconds longer to load.