Patent ID: 6131175
Filing Date: 2000-10-10
Classification: G01R

Abstract:
Electronic apparatus having first and second modes of performing measurements and comprising:a plurality of measurement channels, each measurement channel having an input and an output;a plurality of probes, each probe of the plurality connected to the input of an associated measurement channel;a signal generator that produces a first signal unlikely to be identical to a work signal to be measured in a device under test;a terminal coupled to the first signal and physically accessible by probes within the plurality thereof;a signal comparison circuit having first and second comparison inputs and a comparison output, the comparison output indicative of whether or not a signal applied to the first comparison input matches one applied to the second comparison input, the first comparison input coupled to the first signal and the second comparison input coupled to the output of at least one measurement channel;a control circuit coupled to the comparison output and that causes the electronic apparatus to change the mode of performing measurements subsequent to an indication that the signal applied to the second comparison input matches the first signal.