Characteristics of Differential Probes
R&S
®
RT-ZD01
24
User Manual 1422.0732.02 ─ 02
●
Probing on ground-referenced signals. In this case, the common mode com-
ponent is always equal to half of the input voltage.
3.2
Dynamic Range and Operating Voltage Window
Two separate specifications are necessary in order to characterize the permissi-
ble input voltage range of a differential voltage probe:
●
The dynamic range (or "differential mode range") designates the maximum
differential voltage V
in
that may occur between the positive and negative sig-
nal pin.
●
At the same time, the two voltage values at each of the two signal pins V
p
und
V
n
referenced to the common ground must not exceed a specific limit value.
This limitation is referred to as the operating voltage window (some manufac-
turers also use the less precise term "common mode range" for the same
parameter).
If one of these ranges is exceeded, an unwanted signal clipping may occur.
Dynamic Range and Operating Voltage Window
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