I need to find the bandwidth of my unit under test which is nothing but some amplifier. By using 20 log of output by input I'm able to plot the bandwidth graph but facing difficulties in finding the cut of frequencies.
I tried 2 methods one is using Interpolation function in array palate which is giving inaccurate values some plus or minus 500 hz.
Another method I tried, since I'm using the xy graph to plot the data. (2 active cursors I'm using) so I given the -3db value to cursor 0 (Y)axis and reading the x axis value(f2). For f1 again I went for interpolation method. But the cursor 0 sometimes pointing the f1. I need to find the correct values of f1 and &2.
Thanks in advance.
