Appendix A: Specifications
Figure 37: Input voltage versus frequency
NOTE. Mea
surement Category II refers to circuits connected to mains socket
outlets and similar points in the mains installation.
Measure
ment Category III refers to distribution level and fixed installation
circuits inside a building.
Fi
gure 38: Maximum voltage between oscilloscope references, and between
oscilloscope references and earth ground
94 THS3000 Series Oscilloscopes User Manual