Input Coupling
The input channels can be configured for DC coupling or AC coupling. DC coupling allows DC and low-frequency components of a signal to pass through without attenuation. In contrast, AC coupling removes DC offsets and attenuates low frequency components of a signal. Use AC coupling to zoom in on AC signals with large DC offsets, such as switching noise on a 12 V power supply. Refer to the specifications for input limits that must be observed regardless of coupling.