Theory of operation
The four input a
mplifiers are multiplexed together and only the selected input
mode function is sent to the connected oscilloscope. The following figure shows a
conceptual view of the TriMode probe input structure, where the C input provides
the probe ground reference and is connected to the probe tip ground interconnect
using the probe’s cable coaxial shields.
Figure 4 : TriMode input structure
For oscilloscopes that provide full TriMode support, the oscilloscope-controlled
probe graphical-user interface can perform a probe compensation operation on
all input modes and attenuation settings at once using the Probe DC Calibration
fixt
ure supplied with each P7700 Series probe.
P7700 Series TriMode Probes Technical Reference 11
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