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
Determining Unit Configuration Settings
JUL 2001 Rev 03
115
Determining Unit Configuration Settings
Configuration settings of units should be determined before installation to ensure easy installation and to
reduce installation costs. An information sheet should be prepared for each unit that specifies the basic
configuration settings of that unit.
• Unit Name
• IP Address
• Subnet Mask
• Station Type
• Station Rank
• Center Frequency
• Security passwords
• Scrambling Code
• Acquisition Code
• Remote Unit RF Group
You may also specify other settings such as remote distance, IP filtering and throttling.
Calculating a Link Budget
Proper path planning ensures that each end of the RF link receives sufficient signal power to maintain the
desired Bit Error Rate (BER). The effectiveness and reliability of your RF link depends on several factors.
• Antenna gain and other characteristics
• Distance between antennas and obstructions in the RF path
• Location and height of antennas
• Length and type of coaxial cable connecting the unit to the antenna
These factors are considered when you calculate your link budget. The calculation indicates, on paper, if your
radio link is feasible over a given distance and path and if your RF link meets regulatory requirements. Link
budgets are typically expressed in decibels (dB).
The following variables are used to calculate the link budget.
Variable Description
System Gain Maximum path loss that the system can support for usable data transmission
EIRP (Effective
Isotropically
Radiated Power)
Power radiating from an antenna taking into account the output power from the
transmitter, connector losses, cable losses and antenna gain
Antenna Gain Gain of the antenna over a dipole (dBd) or theoretical (dBi)
Propagation Loss Signal loss experienced as it travels through the air, expressed in dB