Cannot perform Xtalk in VL53L5CX GUI

Ade K.1 · ‎2022-10-03

Hi all,

I'm trying to get the GUI to perform Xtalk calibration, but every attempt so far returns the error 'Error from ULD: XTalk error, invalid parameter provided'.

I've tried altering the default parameters in various combinations but no luck so far.

Does anyone have a clue as to what I'm missing here?

Arie

John E KVAM · ‎2022-10-03

in order to do crosstalk, the absolute ideal condition would be to point the sensor into some completely open area. Nothing within a good 5 feet. I use my desk looking up at a ceiling. (make sure there is noting in the FoV,)

Then set the parameters to 5% reflectance an as big a distance as tool will allow. I use 999.

But the real trick is that you actually need a coverglass. Without a coverglass, you do get an error.

And once calibrated, be sure to check the "CoverGlass On" box. Otherwise the calibration is not taken into account.

john

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Ade K.1 · ‎2022-10-03

Thanks John,

This was with the cover glass placed and the box ticked, but it may have had to do with the spacer I had in between. I started with a 1mm spacer. I tried again with a 0.25mm spacer and a distance of 999, and now it calibrated just fine.

John E KVAM · ‎2022-10-03

Give it another try. I used it with both layers of an anti-static bag as a coverglass and although the bag makes a really awful coverglass, you do get a result.

Our community relies on fruitful exchanges and good quality content. You can thank and reward helpful and positive contributions by marking them as 'Accept as Solution'. When marking a solution, make sure it answers your original question or issue that you raised.

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