A custom prototyping board and a controller are integrated to form an emulation system for emulating a circuit design. In one embodiment the injection device is an automatic device including a pump forcing the liquid through a tube to a hand-piece. The polarization dependent coupling device is arranged between the first and the second polarization converters, and the optical arrangement receives from different sides light beams propagating in different directions. The dimmer provides DC power to the lamp based on the phase angle. The first bundle is then sent to a plurality of remote sites in preparation for transmission of the TDMA frame to a communication unit in the simulcast system.