Product Info

Infinet Wireless: Technical Documentation – InfiMAN Evolution
Installation – 64
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14 Figure - Cable gland assembly
6.4.3 Requirements to the lightning protection unit AUX-ODU-LPU-G location
AUX-ODU-LPU-Gis an optional accessory which may be used to serve as a line protection unit for theODUand for
the indoor network equipment connected to the Ethernet port of theIDU.
AUX-ODU-LPU-Gshould be properly assembled, mounted and grounded.
General recommendations for installations of lightning protection units:
Install the lightning protection unit on both ends of the cable to protect both the outdoor and the indoor
unit.The purpose of theLPUat the top is to protect theODUfrom a surge of lightning strike which can hit
the long FTP cablerun along the height of the pole or on the roof of the building.The purpose of theLPUat
the bottom is to protect theIDUand customer equipment.
Use the lightning protection unit to protect all circuits for signal transmission and power supply (video,
audio, management signals, Ethernet, etc.)
Regularly (especially before the periods with high thunderstorm activity) check the integrity of lightning
protection units, grounding elements andbonding conductors.
Make sure to install the twoLPUdevices in the correct polarity, as shown in the diagram:
TopLPUwith "ETHOUT" facing theODU.
BottomLPUwith "ETHOUT" facing theIDU.
LPUunits connected to each other via "ETHIN".