User's Guide Part 1

Table Of Contents
Contents
NIDU specifications ................................................................................................................... 2-52
Chapter 3:
System planning ........................................................................................................... 3-1
Typical deployment ........................................................................................................................... 3-2
ODU with POE interface to PSU ................................................................................................. 3-2
E1 or T1 interfaces ....................................................................................................................... 3-4
SFP and Aux Ethernet interfaces ............................................................................................... 3-6
GPS receiver interfaces............................................................................................................... 3-9
Site planning..................................................................................................................................... 3-11
Grounding and lightning protection ........................................................................................ 3-11
Lightning protection zones ....................................................................................................... 3-11
Site grounding system.............................................................................................................. 3-12
ODU and external antenna location ........................................................................................ 3-13
ODU ambient temperature limits ............................................................................................ 3-13
ODU wind loading ..................................................................................................................... 3-14
Hazardous locations .................................................................................................................. 3-15
PSU DC power supply............................................................................................................... 3-15
PSU location .............................................................................................................................. 3-16
PTP-SYNC location .................................................................................................................... 3-16
GPS receiver location................................................................................................................ 3-16
NIDU location ............................................................................................................................ 3-17
Drop cable grounding points ................................................................................................... 3-17
LPU location ............................................................................................................................... 3-18
Multiple LPUs ............................................................................................................................ 3-18
Radio spectrum planning ................................................................................................................ 3-21
General wireless specifications ............................................................................................... 3-21
Regulatory limits ....................................................................................................................... 3-22
Conforming to the limits........................................................................................................... 3-22
Available spectrum ................................................................................................................... 3-23
Channel bandwidth ................................................................................................................... 3-23
Frequency selection .................................................................................................................. 3-23
Avoidance of weather radars (USA only) ............................................................................... 3-24
Link planning .................................................................................................................................... 3-25
LINKPlanner ............................................................................................................................... 3-25
Range and obstacles ................................................................................................................. 3-25
LINKPlanner for synchronized networks ................................................................................. 3-26
Path loss ..................................................................................................................................... 3-26
Adaptive modulation ................................................................................................................ 3-26
Calculating data rate capacity .................................................................................................. 3-27
Planning for connectorized units .................................................................................................... 3-29
When to install connectorized units ........................................................................................ 3-29
Choosing external antennas .................................................................................................... 3-29
Calculating RF cable length (5.8 GHz FCC only) ..................................................................... 3-30
Configuration options for TDD synchronization ........................................................................... 3-31
Single link configuration with PTP-SYNC ............................................................................... 3-32
Cluster with PTP-SYNC and GPS receiver .............................................................................. 3-33
Cluster with PTP-SYNC and no GPS receiver ......................................................................... 3-34
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