Tektronix P6243, Instructions Manual

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Operating Basics
10
P6243 Instructions
Ground Lead Length
When you are probing a circuit, you should always use as short a
ground lead as possible between the probe head and circuit ground.
The input capacitance of the P6243 and the inductance of the ground
lead results in a resonant circuit that can ring. Using a shorter ground
lead will minimize ringing. See Figure 2.
Low-inductance
Ground Three-inch
Ground Six-inch
Ground
Figure 2: Waveform Distortion from Ground Lead Length
Figure 3 illustrates the resistance, capacitance, and inductance that
the probe and ground lead adds to a circuit.