The ACU is a universal and flexible automatic change-over unit designed for controlling TV and FMm, analogue or digital. The ACU includes a Baseband and RF internal switch. It can also control an external high power coaxial relay. In case of breakdown of the main RF signal, the equipment operates the subsequent switch-over to the auxiliary source, thus ensuring continuity of service. The internal coaxial relay allows switch-over of RF signals of up to 350 W average power up to 1 GHz, and 150W up to 3 GHz.
By means of the dedicated DB-25 connector located in the rear panel of the unit, it can be matched with
any type of external coaxial relay to control any high power installations. The unit, which is 100% microprocessor-controlled, allows the software-operated configuration of all operating parameters, such as low power threshold, waiting and switching time. The graphic display makes it possible to check the parameter settings and the operational status of the system. Automatic operation can be deactivated from the front panel in order to allow the manual control of switching. All base-band routing is made by means of fully passive bistable circuitry, in order to grant the signal continuity even in case the changeover unit gets damaged.
The unit features a dual independent mains power system and, as a standard, it is equipped with low voltage DC input for battery supplied systems.
