S4000ADU ANTENNA DISTRIBUTION UNIT
OPERATING INSTRUCTIONS
Introduction:
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, and S4000F receivers and can be rack mounted
(1U, half width) using the S4000RK rack mount kit.
Connection:
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 ADU/RX output of an S4000PDU.
Operation:
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 3dB to
compensate for cable losses. If one output is short-circuited, the others will continue to
operate normally.
Specifications:
Power Supply: 12-18v DC, 250mA, Centre Positive
Input: 2 x TNC, 50
Ω
; Bandwidth 30MHz, Centre Frequency as for specified TV channel
Output: 10 x SMC (2 Channels, 5 per Channel), 50
Ω
, +3dB, Individually Buffered
BBM Electronics Group, Kestrel House, Garth Road, Morden, Surrey, SM4 4LP
Tel: +44 (0)20 8330 3111, Fax: +44 (0)20 8330 3222
E-Mail: [email protected], Web: http://www.trantec.co.uk
