spectral history in AC equipment

Anyone can make history spectral equipment ac?
I’m testing with various AC equipment.
none works with spectral history.
everybody throws an error.

help please.

I think that spectral history is currently not available on AC equipment.

This URL may provide more info

http://forum.mikrotik.com/t/802-11ac-spectral-scan/81464/1

I hope soon I can do spectral history.