Briana Chen - posted 10:21, Thursday 08 August 2024 - last comment - 14:30, Friday 09 August 2024(11810)
Get FFT/PSD of a probe point
Previously, Torrey had to divide out the controller from the control signal to get the error signal. You can avoid all that if you just use the built-in math channel on the laser lock box and set it to take an FFT at a probe point.
Comments related to this report
Torrey Cullen - 10:23, Thursday 08 August 2024 (11812)
Even though this is nice, I should mention that this FFT will differ from the spectrum analyzer because it is not windowed (will get more harmonics as a result), has a fixed bandwidth resolution depending on the time span. For these reasons, it may be better to still use spectrum analyzer on the Moku.
:)
Even though this is nice, I should mention that this FFT will differ from the spectrum analyzer because it is not windowed (will get more harmonics as a result), has a fixed bandwidth resolution depending on the time span. For these reasons, it may be better to still use spectrum analyzer on the Moku.