Appendix D: Probe Basics
Ground Leads
Always use a ground lead when you probe a circuit to minimize noise
pickup and signal aberrations. Conn ecting the ground lead to a point
near the signal source usually provides the best results.
Long ground leads can cause false ringing and aberrations in the
acquired waveform that are not in the actual signal. To see the best
signal fidelity, use the shortest possible g round lead.
Short ground lead
Long ground lead
172 TDS3000C Series Oscilloscope User Manual
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