18 Check S1 and S2 parameters

In Focus mode, S1 and S2 are linked to the positions of the beam which is deflected away from the center of the imaging area on the specimen. When highlighted, their parameters can be changed by the Multi-function keys.

Normally, we use 175kX as the magnification. The radius of the spot is about 1.5 microns. Depending on the specimen, you can change those parameters to fit your needs.