Reference
A differential
probe is basically a differential amplifier used to make differential
measurements that reject any voltage common to the inputs and amplifies any
difference between the inputs. Voltage that is common to both inputs is often
referred to as the common-mode voltage (V
CM
) and voltage that is different as
the differential mode voltage (V
DM
).
Figure 22: Simplified model of a differential amplifier
P7700 Series TriMode Probes Technical Reference 33
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