A hidden braking assembly provides a connecting unit disposed inside a main frame. More specifically, a method of deploying an optical demodulator arrangement having at least one interferometer in a network that transmits an optical signal is provided. For this purpose, the ball bearing of the support bearing is supported on the car body with a ball bearing race that features a first ball track. Input commands andor information, for instance, relating to crop type, andor crop and environmental conditions, can also be inputted using either an onboard or remote input device.