GE MDS iNET 900, Справочное руководство

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05-2806A01, Rev. J iNET Series Reference Manual v
4.1.1 General Requirements ...........................................................................................................127
DIN Rail Mounting Option ............................................................................................................129
4.1.2 Site Selection .........................................................................................................................129
4.1.3 Equipment Grounding ............................................................................................................130
4.1.4 Terrain and Signal Strength ....................................................................................................130
4.1.5 Antenna & Feedline Selection ................................................................................................131
4.1.6 How Much Output Power Can be Used? ...............................................................................133
4.1.7 Conducting a Site Survey .......................................................................................................134
4.1.8 A Word About Radio Interference ...........................................................................................134
4.1.9 Notes on Using 28 VDC Power Supplies ...............................................................................136
4.2 RADIO (RF) MEASUREMENTS ....................................................................................... 137
4.2.1 Antenna System SWR and Transmitter Power Output ...........................................................137
Introduction ..................................................................................................................................137
Procedure ....................................................................................................................................138
4.2.2 Antenna Aiming ......................................................................................................................139
Introduction ..................................................................................................................................139
Procedure ....................................................................................................................................139
4.3 dBm-WATTS-VOLTS CONVERSION CHART.................................................................. 141
4.4 PERFORMANCE NOTES................................................................................................. 142
4.4.1 Wireless Bridge ......................................................................................................................142
4.4.2 Distance-Throughput Relationship .........................................................................................142
4.4.3 Data Latency TCP versus UDP Mode .................................................................................143
4.4.4 Data Compression ..................................................................................................................143
4.4.5 Packets-per-Second (PPS) ....................................................................................................143
4.4.6 Station-to-Station Traffic .........................................................................................................143
4.4.7 Interference has a Direct Correlation to Throughput ..............................................................143
4.4.8 Maximizing Throughput ..........................................................................................................144
4.4.9 Placing an iNET Radio Behind a Firewall ...............................................................................145
4.5 SNMPv3 NOTES .............................................................................................................. 145
4.5.1 Overview ................................................................................................................................145
SNMPv3 Accounts .......................................................................................................................146
Context Names ............................................................................................................................146
Password-Mode Management Changes......................................................................................147
5 TECHNICAL REFERENCE..................................... 151
5.1 DATA INTERFACE CONNECTORS ................................................................................. 153
5.1.1 LAN Port .................................................................................................................................153
5.1.2 COM1 Port .............................................................................................................................154
5.1.3 COM2 Port .............................................................................................................................154