Fluke ScopeMeter 190 Series III User Manual page 80

®
ScopeMeter Test Tool
Tips
Figure 38. Parasitic Capacitance between Probes, Instrument and Environment
Note
Parasitic capacitances can cause ringing on the signal. Ringing can be limited by adding
a ferrite bead around the probe cable.
W Warning
To avoid electrical shock, always use the insulation sleeve or the hook clip when
using the probe reference (ground) lead. The voltage applied to the reference lead
is also present on the ground ring near the probe tip as shown in Figure 39. The
isolation sleeve avoids the risk of accidentally interconnecting the reference
contact of multiple probes when ground leads are connected or short-circuiting
any circuitry via the bare ground ring.
Figure 39. Probe Tip
A
Same Potential

75
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