The positioner is a dedicated controller which has a mechanical linkage to the actuator movement. This signal is then fed to the valve actuator or more commonly, a pneumatic positioner. The pneumatic output signal provides the input signal to the pneumatic positioner. Stepper motors with XYZ piezo block positioner or closed-loop controller systems have also been used. The positioner must be mounted on or near the control valve assembly. Automatic calibration and configuration of positioner. The positioner, such as a robotic arm is coupled to the probe. It then sends the angular position to the positioner using the DiSEqC 1.2 protocol. This type of positioner is a microprocessor-based instrument. It is a new high-resolution spectrograph to be used with the 2dF fibre positioner. Kesling is known for developing the Positioner appliance. The second type of positioner is an analog I/P positioner. On Oct. 5 2009, LITE 99.9 changed its positioner to 99.9 LITE FM. In 2013, the station changed its positioner to "Hawaii's Alternative". The positioner changed again on December 4, 2009, to "Big Oldies 107.3".