problem on fetch VI's

[parsa]

Hi

I have writen a program to generate signals an measure on the oscilloscope(Im using some parts of NI's VI's). the problem is that when I tune for example the Offset, it works correctly on oscilloscope but on my graf all the signals are centered and have the same scales independent of tuning the configurations.

[Dennis_Knutson · Accepted solution]

You don't seem to understand what the offset does. It is a scope display option that moves the 0V reference up or down. It certainly does not change the absolute voltages that are returned. You would need to do the same thing with your graph by creating a scale for each channel and changing the min and max for each so that the zero reference is moved up or down.