Probing Principles
AC and D C Coupling
You can couple the signal input to the oscilloscope with either DC or AC coupling. DC coupling shows both the DC a nd AC
measurement components. AC coupling removes the DC component from the displayed signal.
1. This low-frequency square wave is
displayed using AC coupling. The signal
exhibits low-frequency rolloff.
2. Press the DC Coupling button to display
the waveform as truly square.
CAUTION. When you use AC coupling, make
sure that the input DC current does not exceed
the probe specifications.
34 TCP0030 Current Probe Instruction Manual
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