7 Performance Plots - Keysight N2800A User Manual

7
Performance Plots
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Two time responses are shown:
• "Time Response to an Ideal Step at Probe Tip" This is the classical "step response"
which is defined as the time response to an ideal, zero rise-time step present at the
probe tip. This can be determined accurately because the probe rolls off significantly
within the 40GHz measurement range.
• "Time Response to a ?ps Step at Probe Tip" This is the time response of the probe
when measuring a step with the indicated 10%-90% rise-time present at the probe
tip. The measured step is generated using a 5
an edge shape as shown in the plot showing the loading effect of the probe. The
rise-time of this test step is picked to illustrate approximately the fastest step the
probe can measure with less than 3% error in the rise-time measurement.
order Bessel low pass filter that has
th
InfiniiMax III Series Probes User's Guide