The 8000BL includes two tray stacking mechanisms which serve to input and output trays of devices. These stacking mechanisms rely on stepper motors and air cylinder pins to move the trays up and down. The stepper motors can be "homed" after any number of cycles, depending on a user-defined setting.

The tray in use is moved along its axis on a tray carriage with small air cylinders designed to assure the tray is held tightly and squarely in a known corner of the carriage. The carriage itself is moved by a servo motor driven lead screw system. The repeatable accuracy of the tray placement is less than .001".

Label application is accomplished by a pick up head mounted on a linear slide and run by as stepper motor. The pick up head mount runs across the top of the tray in the label application position. A series of fiber-optic sensors are mounted to determine whether a device is present in the tray.