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6
Digital Channels
Figure 10
High-Frequency Probe Equivalent Circuit
The impedance plots for the two models are shown in these figures. By
comparing the two plots, you can see that both the series tip resistor and
the cable's characteristic impedance extend the input impedance
significantly. The stray tip capacitance, which is generally small (1 pF),
sets the final break point on the impedance chart.
Agilent InfiniiVision 2000 X-Series Oscilloscopes User's Guide
99
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