Moreover, the system can also be used to improve the safe operation level of the transmission lines and to prevent the catastrophic fault due to excessively heavy loading.

X1 probe: no attenuation, input impedance follow that of scope input impedance (usually 1 Mohm). This type of probe is seldom used because of heavy loading effect on circuit under test.

To enable them to withstand the heavy loading of opening the valve, the cams are required to be hardened to a good depth during manufacture.