Hantek 1060 User Manual page 16

Over compensated
Under Compensated
3. If necessary, use a non-metallic tool to adjust the trimmer capacitor of the probe for
the flattest square wave being displayed on the scope meter.
4. Repeat if necessary.
WARNNING: To avoid electric shock while using the probe, be sure the perfection of
the insulated cable, and do not touch the metallic portions of the probe head while it is
connected with a voltage source.