Princeton Applied Research 5302 Lock-In Amplifier

Princeton Applied Research 5302 Lock-In Amplifier with 5316A Differential Preamplifier Plug-In Module. Unit powers on. Passes self-test and self-calibrate. Display good. Fan quiet. Pushbuttons, rotary encoder and meter movement O.K. Basic test O.K. No manual, test leads or other accessories. Purchaser responsible for any calibration and proper use. This unit does have some “automatic” set up sequences provided for specific parameters. It also appears to be very intuitive to operate if familiar with lock-in amplifiers. Many online resources are available for this unit and other similar ones.