S4000 Antenna Distribution Unit

The S4000ADU antenna distribution unit is designed to allow the use of a single pair of antennas with up to 5 receivers. For larger systems, one of the outputs is optimised for use feeding an additional ADU, allowing multiple ADUs to be cascaded each feeding up to four receivers. It is suitable for use with S4000, S4.16, S5.3 and S5.5 receivers and can be rack mounted (1U, half width) using the ACC/S4.16RK rack mount tray.

Connect the two receiving antennas to the Antenna A and B inputs. Using the SMC-TNC cables provided, connect outputs 1 to 4 to the receiver antenna inputs for both channel A and B. The ADU Link output may be used to feed a fifth receiver or can be used to feed another ADU. In this case use the SMC-TNC cables to connect the ADU Link outputs of the first ADU to the antenna inputs of the second one. Connect the DC power input to a suitable Trantec DC power supply or to the PS/RACK-PDU available from the Trantec product range.

With everything connected correctly, the receivers should function as normal. The ADU must be powered up to operate - this is indicated by the front panel power LED. By using one or more ADUs, a single pair of antennas can be optimally located and used to feed all the receivers in a system. Good quality RF cable should be used between the antennas and the first ADU. Each ADU output is individually buffered and has a gain of around +3dB to compensate for cable losses. If one output is short-circuited, the others will continue to operate normally.

TECHNICAL SPECIFICATION