A portable electronic device for evaluating placement location of a diagnostic tool for a patient, the portable electronic device comprising: a graphical user interface configured to receive an input from a user and communicate an output to the user; an electronic memory storage configured to store programming instructions; and one or more processors configured to execute the programming instructions to perform the following steps: establishing a communications link with a pulse generator that is configured to generate electrical stimulation pulses at a first frequency of 12 Hz or greater; and simulating a controlled intermittent electrical coupling between the pulse generator and the diagnostic tool by instructing the pulse generator to automatically turn on and off the generation of electrical stimulation pulses for a plurality of cycles; wherein: each cycle includes a first time period and a second time period following the first time period; the simulating comprises instructing the pulse generator to generate the electrical stimulation pulses at the first frequency during the first time period; and the simulating further comprises instructing the pulse generator to stop generating the electrical stimulation pulses during the second time period. a graphical user interface configured to receive an input from a user and communicate an output to the user; an electronic memory storage configured to store programming instructions; and one or more processors configured to execute the programming instructions to perform the following steps: establishing a communications link with a pulse generator that is configured to generate electrical stimulation pulses at a first frequency of 12 Hz or greater; and simulating a controlled intermittent electrical coupling between the pulse generator and the diagnostic tool by instructing the pulse generator to automatically turn on and off the generation of electrical stimulation pulses for a plurality of cycles; wherein: each cycle includes a first time period and a second time period following the first time period; the simulating comprises instructing the pulse generator to generate the electrical stimulation pulses at the first frequency during the first time period; and the simulating further comprises instructing the pulse generator to stop generating the electrical stimulation pulses during the second time period. establishing a communications link with a pulse generator that is configured to generate electrical stimulation pulses at a first frequency of 12 Hz or greater; and simulating a controlled intermittent electrical coupling between the pulse generator and the diagnostic tool by instructing the pulse generator to automatically turn on and off the generation of electrical stimulation pulses for a plurality of cycles; wherein: each cycle includes a first time period and a second time period following the first time period; the simulating comprises instructing the pulse generator to generate the electrical stimulation pulses at the first frequency during the first time period; and the simulating further comprises instructing the pulse generator to stop generating the electrical stimulation pulses during the second time period. each cycle includes a first time period and a second time period following the first time period; the simulating comprises instructing the pulse generator to generate the electrical stimulation pulses at the first frequency during the first time period; and the simulating further comprises instructing the pulse generator to stop generating the electrical stimulation pulses during the second time period.