User's Manual
Table Of Contents
- Contents
- Important Information
- Notices
- Description
- Installation
- Configuration
- Overview
- Accessing the Main Menu
- Configuring with the Main Menu
- Unit Identification
- Hardware/Software Revision
- System Software ROM Images
- System Current Status
- Network Configuration
- IP Filter Configuration
- RF Station Configuration
- Viewing Current RF Station Configuration
- Setting the Operating Mode
- General Equipment Setup for Performing RF Tests
- Setting Test Mode Timer Minutes
- Performing Link Monitor Test (Normal Mode)
- Performing Transmit and Receive Tests
- Performing the RSSI Test
- Setting the RF Transmit Status
- Setting the Link Monitor Period
- Setting Maximum Remote Distance (Base Station Only)
- Setting Link Monitor Remote Station Rank
- Adjusting Throttling (Remote Station Only)
- Setting Tx Power Automatically (Remote Station Only)
- Adjusting User Output Power Ceiling (Remote Station Only)
- Setting Signal Margin (Remote Station Only)
- Viewing Current Output Power Level Adjust
- Radio Module Configuration
- Viewing the Radio Module Configuration
- Setting Config Test Minutes
- Setting the Station Type
- Setting the Station Rank
- Setting the Center Frequency
- Setting Security Passwords
- Setting the Scrambling Code
- Setting the Acquisition Code
- Adjusting the Tx Power Level
- Setting a Base to Repeater Mode (Base Station Only)
- Setting System Symmetry Type (Base Station Only)
- Setting Dynamic Polling Level (Base Station Only)
- Setting Remote Unit RF Group
- Rebooting and Saving RF Module Configurations
- RF/Ethernet Statistics
- System Security
- System Commands
- Link Monitor Display
- Logout
- Setting Operating Mode with the Mode Button
- Command Line Interface
- Troubleshooting
- Appendix A: Planning Your Wireless Link
- Appendix B: Using HyperTerminal
- Appendix C: Configuring a Simple Data Network
- Appendix D: SNMP
- Appendix E: Technical Reference Information
- Appendix F: Menu Map
- Appendix G: Upgrading Software
- Glossary
- Index
Antenna Basics
JUL 2001 Rev 03
125
Minimal Clearance Above Obstructions
For the AWE 120-24, the absolute minimum clearance above obstructions requirements are as follows (in
meters):
@ 2.4 GHz
Some example clearance requirements for 2.4 GHz links follow.
Note: There is also a correction factor to compensate for curvature of the earth. This correction factor is
not required when the correction value is negligible < 10 km.
Installing Antennas
Ensure the following conditions.
• Dipole antennas are oriented vertically (point up).
• Antennas for the system have the same polarity (vertical, horizontal or circular).
• Connectors attaching the coaxial cable to the antenna are properly weatherproofed.
• A drip loop is formed at the building entrance to prevent water flowing down the coaxial cable and
entering the installation building.
• The coaxial cable is secured to the supporting structure at one meter intervals to prevent wind
damage and frost loading problems.
• The antenna is firmly attached to the mast to prevent it from falling, yet has some flexibility so you
can move the antenna to fine-tune its position.
Distance
(km)
Clearance
(m)
Distance
(miles)
Clearance
(ft)
0.5 2.4 0.5 10.0
1 3.4 1 14.3
2 4.9 2 20.5
3 6.0 3 25.7
5 8.0 5 34.9
8 10.6 8 48.3
10 12.3 10 57.6
15 16.6 15 83.8
WARNING
Antennas must be installed professionally to ensure that the antenna operates properly
and follows accepted safety, electrical, grounding and civil engineering standards.
3.4md
km
×
!