• [A+B]/2 - GND (for common mode measurement)
Note: In the B – GND Mode, the negative polarity B input is not inverted.
The four input amplifiers 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 6: TriMode input structure
Operating voltages
The TDP7700 Series probes are designed to probe high-frequency, low-voltage circuits. Before probing a circuit, take into
account the limits for the operating voltages discussed in this section.
• Max non-destruct input voltage
• Input signal dynamic range
• Offset voltage
• Operating voltage window
Theory of operation
TDP7700 Series TriMode™ Probes Technical Reference
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