Reference Manual
Table Of Contents
- Preface
- 1. Introduction
- 2. Basic Radio Programming and Setup
- 2.1. Setting the Radio's Role in the Network and the Network Type
- 2.2. Establishing Communication with Instrumentation and Computers
- 2.3. Establishing Communication with Other Radios in the Network
- 2.4. Designate the RF Transmission Characteristics
- 2.4.1. 900MHz Channel Select Parameters
- 2.4.2. 900MHz Frequency Key (Golden Setting)
- 2.4.3. 900MHz Frequency Zones
- 2.4.4. High Noise
- 2.4.5. 900MHz Hop Frequency Offset
- 2.4.6. 900MHz Hop Table Size
- 2.4.7. 900MHz Hop Table Version
- 2.4.8. Max Packet Size and Min Packet Size (Golden Setting)
- 2.4.9. MCU Speed
- 2.4.10. Remote LED
- 2.4.11. Retry Time Out
- 2.4.12. RF Data Rate (Golden Setting)
- 2.4.13. RTS to CTS
- 2.4.14. Slave Security
- 2.4.15. Transmit Power
- 2.4.16. Transmit Rate
- 3. Configuring Point-to-MultiPoint Networks
- 3.1. Point to MultiPoint Network Characteristics
- 3.2. Point-to-MultiPoint Network Quick Start
- 3.3. Point-to-MultiPoint Operation LEDs
- 3.4. Overlapping MultiPoint Networks
- 3.5. Establishing Communication with Other Radios in a MultiPoint Network
- 3.6. Routing Communications through the Network
- 3.7. Setting Other MultiPoint Parameters
- 3.7.1. 1 PPS Enable Delay
- 3.7.2. Diagnostics
- 3.7.3. DTR Connect
- 3.7.4. Local Mode
- 3.7.5. Master Packet Repeat
- 3.7.6. Master Packet Repeat in MultiPoint Networks with Repeaters
- 3.7.7. Max Slave Retry
- 3.7.8. Radio ID
- 3.7.9. Radio Name
- 3.7.10. Repeaters
- 3.7.11. Repeater Frequency
- 3.7.12. Retry Odds
- 3.7.13. Slave / Repeater
- 3.8. Conserving Power
- 3.9. Reading Diagnostics in Tool Suite
- 4. Configuring Point-to-Point Networks
- 5. Advanced Programming
- 6. Viewing Radio Statistics
- 7. Approved Antennas
- 8. FGR3 Wireless Data Radios Pinouts
- 9. Troubleshooting
- 10. FGR3 Release Notes
- Appendix A: FGR3 Technical Specifications
- Appendix B: FGR3 Board Level Mechanical Drawing
- Appendix C: 900MHz Factory Default Settings
- Appendix D: 900MHz Channel Frequency IDs
- Appendix E: FreeWave Legal Information
1. Introduction
FGR3
User-Reference Manual
LUM0110AA Rev Jan-2019 Page 13 of 143 Copyright © 2019FreeWave
This document is subject to change without notice. This document is the property of FreeWave Technologies, Inc.
and contains proprietary information owned by FreeWave. This document cannot be reproduced in whole or in
part by any means without written permission from FreeWave Technologies, Inc.
Differences between PTP and PTMP
l In a Point-to-Point network all packets are acknowledged, whether sent from the Master to
the Slave or from the Slave to the Master.
l In a MultiPoint network, the user determines the number of times outbound packets from
the Master or Repeater to the Slave or other Repeaters are sent.
l The receiving radio, Slave or Repeater, accepts the first packet received that passes the
32 bit CRC. However, the packet is NOT acknowledged.
l On the return trip to the Master, all packets sent are acknowledged or retransmitted until
they are acknowledged.
l Therefore, the return link in a MultiPoint network is generally very robust.
Traditionally, a MultiPoint network is used in applications where data is collected from many
instruments and reported back to one central site. The architecture of such a network is different
from Point-to-Point applications. These parameters influence the number of radios that can exist
in a MultiPoint network:
l Data block size.
l The longer the data blocks, the fewer number of deployed Slave radios can exist in the
network.
l Baud rate.
l The data rate between the radio and the device it is connected to could limit the amount
of data and the number of radios that can exist in a network
l The amount of contention between Slave radios.
l Polled Slave radios versus timed Slave radios.
l Repeater Use.
l Using the Repeater setting in a Point-to-Point or MultiPoint network decreases overall
network capacity by 50%.
Example: If the network polls once a day to retrieve sparse data, several hundred Slave radios could
be configured to a single Master.
However, if each Slave transmits larger amounts of data or data more frequently, fewer Slave radios
can link to the Master while receiving the same network performance.
When larger amounts of data are sent more frequently, the overall network bandwidth is closer to
capacity with fewerSlave radios.