Measure Harmonics in my driver

[gilbertomaldito]

I would like to measure my harmonics in my LED driver. When I measured it in HSPICE, the harmonics frequencies are in the order of 1000k. Example,. first harmonic = 1k Hz, 2nd H = 2k Hz, so on and so forth. But my input is AC, my harmonics frequencies must be 60Hz, 120Hz, 180, so on and so forth.

Please guide me how to measure harmonics in these frequencies..


- Andrew-