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S4000 Antenna Distribution Unit

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਍ഀ 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.

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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.

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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.

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TECHNICAL SPECIFICATION

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S4000 ADU
Power Supply:	12-18v DC, 250mA, Centre Positive
Input:	2 x TNC, 50Ω Bandwidth 35MHz
Output:	10 x SMC (2 Channels, 5 per Channel), 50Ω, +3dB, Individually Buffered

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