Characteristics of Differential Probes
R&S
®
RT-ZD01
26
User Manual 1422.0732.02 ─ 02
Fig. 3-3: Signal curves
a) = Two signals of
±
700
V and opposing phase are applied to positive and negative inputs. At
the peaks, the probe is driven with an input voltage of
±
1400
V between the positive and
negative signal pin. The dynamic range limit is reached.
b) = The negative signal pin is connected to ground, the positive pin is driven with an input volt-
age of
±
1400
V. Dynamic range and operating voltage window are used completely. Note
that the oscilloscope displays the same waveform as with example a).
c) = Dynamic range limit is exceeded. The oscilloscope displays a clipped signal.
d) = Operating voltage window is exceeded. The oscilloscope displays a clipped signal.
Signal clipping
Only differential input signals are detected by the probe and displayed by
the base unit. Common mode signals are suppressed by the probe. There-
fore, the user does not initially recognize that the operating voltage window
is exceeded owing to inadmissible common mode voltages. If unexpected
clipping occurs, check the positive or negative input voltage relative to
ground.
Dynamic Range and Operating Voltage Window
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