Radwin Ltd. RW2049 用户手册

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External Lightning Surge Suppressors and Grounding
Appendix E
RADWIN 1000/2000/5000 User ManualVersion  2.5.30p3
E-3
The device should be permanently connected to ground.
External Lightning Surge Suppressors and Grounding
A Grounding Kit and Surge Arrestor Unit must be located near the ODU and 
properly grounded as illustrated in 
Figure E-2: Grounding a typical pole installation