Patent ID: 8332175

Claim:
An oscilloscope probe calibrating system for a single terminal probe and a differential probe, comprising: an oscilloscope comprising a plurality of inputs for receiving signals from the single terminal probe and the differential probe, an output for outputting an original calibration signal, and a display module displaying the waveforms of the original calibration signal and the signals from the single terminal probe and the differential probe; a main branch module coupled to the output of the oscilloscope for converting the original calibration signals into at least one first calibration signals; a sub-branch module configured for converting the first calibration signals into at least one second calibration signals, the sub-branch module comprising a single terminal sub-branch module coupled to one output of the main branch module, and a differential sub-branch module coupled to another output of the main branch module; and a resistor disposed with one end connected between the main branch module and the differential sub-branch module, and the other end grounded.