I noted that the 0-10V dimming ratio is 9:1. what does this mean? are there many methods of 0-10V dimming or is it always an isolated interface using an opto-coupler to transfer the signal to control ...

My problem is that now, only the phase dimming work (both foward and reverse phase dimming). I need my driver to be able to dimm with 0-10V. The datasheet say about the FLTR2 pin : "A capacitor tied ...