Distortion (Preshoot, Overshoot, And Ringing); Settling Time - Keithley 4200-SCS Reference Manual

Model 4200-SCS Reference Manual
Figure 11-35
Pulse offset example

Distortion (preshoot, overshoot, and ringing)

Preshoot and overshoot are peak distortions preceding/following an edge. Ringing is the positive-
peak and negative-peak distortion (excluding overshoot) on pulse top or base. Distortion for a
pulse is shown in
implies an overshoot and undershoot <5% of pulse amplitude.
Figure 11-36
Preshoot, overshoot, and ringing

Settling time

As shown in
specifications. Settling time is measured from the 90% point on the rising edge to the point where
the pulse level remains in the accuracy band.
Figure 11-37
Settling time
Amplitude
100%
90%
4200-901-01 Rev. S / May 2017
15V High Level
10V
Amplitude
5V Low Level
0V
Figure 11-36. A combined preshoot, overshoot, and ringing specification of 5%
Overshoot
(e.g., 5%)
Amplitude
100%
Preshoot (e.g., 2%)
Figure 11-37, settling time is the time it takes for pulse levels to settle within level
Settling Time
Return to Section Topics
Section 11: Pulse Source-Measure Concepts
Ringing (positive)
(e.g., +3%)
Ringing (negative)
(e.g., -2%)
Time
Amplitude
Accuracy
Band
11-49