User Manual

Recommendations on antenna mounting
45
Combining up to 8 links using the AWM 4
The following illustration shows an example of how to combine up to 8 links
with one AWM 4 antenna wall mount. This reduces the number of antenna
cables required from 16 to 4.
►
The illustration indicates which SMA and R-SMA connectors the ca-
bles need to have. You can either use Sennheiser CL 5/10 or CL 1/5/
10 PP extension cables together with SMA to R-SMA adapters or you
can make your own low-loss cables with the respective couplings.
▷ Please observe the information below on the length of the extension ca-
bles („Signal loss due to extension cables and antenna combiners“).
Always use four antenna combiners for one AWM 4, even if you
use fewer than eight receivers. Always combine all antenna sock-
ets ANT I of up to four receivers and all antenna sockets ANT II of
up to four receivers respectively to the two sockets of one link of the AWM
4. If you are not using all antenna sockets of the antenna combiner, lock the
unused sockets with a terminating resistor (50 Ω) to reduce incoming in-
terference and to maximize the RF performance.
SL Rack Receiver DW
Antenna combiner
Mini-Circuits ZN4PD-272-S+
SMA
Link I - Ant ILink I - Ant II Link II - Ant ILink II - Ant II
SMA
R-SMA
R-SMA
R-SMA male
(connected to AWM 4)
SMA male
(connected to antenna combiner)
R-SMA male
(connected to SL Rack Receiver DW)
SMA male
(connected to antenna combiner)
AWM 4
Cables needed between AWM 4 and antenna combiner
Cables needed between SL Rack Receiver DW and antenna combiner