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Measurement Principles
R&S
®
RT-ZZ80
24
User Manual 1409.7689.02 ─ 02
●
Specifies the transferable spectrum for other waveforms. E.g. with square
wave signals, the fifth harmonic should still be within the bandwidth for a high
signal integrity.
●
Determines the minimum measurable signal rise time. The rise time t
rise
of the
probe is inversely proportional to its bandwidth. The following approximation
applies:
BW
t
rise
5
.
0
The
shows a typical step response of an R&S
RT-ZZ80 transmission
line probe.
Fig. 4-3: Step response of the R&S
RT-ZZ80
In addition to bandwidth, a constant amplitude frequency response of the probe is
decisive for high signal integrity. The
shows the typical amplitude fre-
quency response of an R&S
RT-ZZ80 transmission line probe.
4.1.2
Performance with Different Connection Types
The
shows three types of connection between probe and DUT as well
as the associated rise times, bandwidths, input impedances and overshoots. The
longer the connection to the DUT, the higher the connection inductance L
con
.
Signal Integrity of the Transferred Signal