These are our stand alone chopper systems; each system includes a chopper controller and chopper head. Chopper blades are sold separately. They modulate a continuous wave source for detection by pyroelectric and other detectors, and by a digital lock-in. You can lock the chopper on a reference signal and control the phase. Note, the Oriel Merlin® Digital Lock-in controls Oriel choppers, so there is no need to buy one of these systems which includes the controller; refer to Oriel Merlin® Digital Lock-in Radiometry System for Merlin® Choppers.
