You are asked to analyze a (bio) medical instrument that you have not seen before. You are assured that the instrument is properly connected to the measurand via a sensor, but you are not allowed to see that interface. However, you are allowed to see the output of that sensor both in time and in frequency domains, i.e., you have an oscilloscope and a frequency analyzer. You are also allowed to use a signal generator instead of that sensor if you wish to do so.

a.What would you measure,

b.And how would you characterize this (bio) medical instrument?