Operation
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© 2017 Pico Technology
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The type of window, the order of the Kaiser–Bessel window, and the time span over which the signal is
displayed can be selected in the TDR options window, shown below.
Time Domain Options window allows measurement setup
Note:
To set a time range either starting or ending beyond 161.66ns, use the
Enter T1, T2
facility. However,
the displayed total time span must be less than 166.66ns.
The plot below shows the same cable terminated with a short circuit. The window is fifth-order Kaiser–
Bessel. This time the trace goes to –1 relative to the reference, indicating a reflection coefficient of –1 for
the short circuit.
Measured response of 50 cm shorted cable using Kaiser-Bessel fifth-order window
The trace below shows the effect of increasing the order of the Kaiser–Bessel window to 10. The ripple has
been completely removed but the slope of the edge has been further reduced.
