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Unsure if I am measuring THDi or not.

I want to measure THDv and THDi in a LED lighting circuit so that harmonics can be measured. 

 

I have connected one distortion analyser to the circuit and the other via a current clamp. The one I would have thought would measure THDv get a reading of 42% whereas the THDi (or so I assume) gets a reading of approx 5%. Yet I would expect a THDi of a lot higher and the THDv under 5%. Have I just set this up all wrong to measure those two factors? 

 

XDA1 is intended to measure THDv and XDA2 to measure THDiXDA1 is intended to measure THDv and XDA2 to measure THDiScreenshot 2021-02-06 at 16.31.18.png

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