If you have a rotary potentiometer that measures the amount of angular displacement, what would you say the output signal of the transducer is? I'm unsure if it's resistance or voltage. A change in angular displacement changes the point of contact within the potentiometer, which directly affects its resistance. However, in our case, we are measuring the change in voltage over the potentiometer with a DMM. Actually, there is a list of parameters we need to figure out, and this is what I've come up with. Input Signal to Transducer: angular displacement Output Signal from Transducer: voltage Output device: DMM Output of the sensing system: resistance I'm mainly just confused with the many different types of output. I would think the transducer is the "big picture" (of which our important quantity is voltage), while the sensing system is the potentiometer itself, which changes its resistance. Then I just figured that the output device is whatever your measuring the change with.