Reference Manual
Table Of Contents
- Preface
- 1. Overview
- Untitled
- 2. Equipment
- 3. Installation
- 4. Basic Radio Programming and Setup
- 4.1. Define the Network Type and the Radio's Role in that Network
- 4.2. Establish Communication with Instrumentation and Computers
- 4.3. Establishing Communication with Other Radios in the Network
- 4.4. Set the Data Transmission Characteristics
- 4.5. Set Radio Passwords
- 4.6. Set the Hop Table Size in the Terminal Interface
- 4.7. Set the Radio to a Single Channel in a Terminal Emulator
- 4.8. Set the Radio to Hop Channels
- 4.9. Edit Frequencies for Multiple Channels
- 5. Configure Point-to-MultiPoint Networks
- 5.1. Point to MultiPoint Network Characteristics
- 5.2. Point-to-MultiPoint Network Quick Start (Terminal Interface)
- 5.3. Overlapping MultiPoint Networks
- 5.4. Establishing Communication with Other Radios in a MultiPoint Network
- 5.5. Routing Communication Through the Network
- 5.6. Setting Other MultiPoint Parameters
- 5.7. Reading Diagnostics in Tool Suite
- 6. Configure Point-to-Point Networks
- 7. View Radio Statistics
- 8. Release Notes
- 9. Additional Radio Information
- Appendix A: Technical Specifications
- Appendix B: RF Board Pin-Out
- Appendix C: RS232 Pin Assignments - DB9
- Appendix D: LRS455 Frequency Table
- Appendix E: Factory Default Settings
- Appendix F: Point-to-MultiPoint Operation LEDs
- Appendix G: Point-to-Point Operation LEDs
- Appendix H: FreeWave Legal Information
- Blank Page
- Blank Page
4. Basic Radio Programming and Setup
LUM0020CD Rev June-2020 Page 41 of 112 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.
Max Packet Size and Min Packet Size
Setting Description
Default Setting
Max Packet Size = 8
Min Packet Size = 9
Options Any number between 0 and 9
Setup Terminal
Menu
(3) Edit TransmissionCharacteristics > (1) Max Packet Size and (2) Min Packet
Size
Description
The Max and Min Packet Size parameter settings and the RF Data Rate
parameter determine the number of bytes in the packets.
l Throughput can be enhanced when packet sizes are optimized.
l In Point-to-Point mode, the Max and Min Packet Size settings do not have
material impact on throughput unless 115.2 kbps is desired.
l However, this may have an impact on latency.
Example: If small amounts of data are sent and large packet sizes are
selected, a certain amount of time wasted between each packet would be
seen.
l In each over-the-air frame, both the Master and Slave are guaranteed the
number of bytes specified in the Minimum Packet Size parameter.
l In the Master, this is used for maintaining the RF link whether the Gateway has
data to transmit or not.
l The Maximum Packet Size parameter is used to allocate the maximum
number of bytes for each Master transmission.
l The Minimum Packet Size parameter is used to allocate the minimum
number of bytes for each Slave transmission.
l If the Master does not use all the bytes allocated in the Maximum Packet
Size setting minus the Minimum Packet Size setting, then the remaining
bytes are available for the Slave.
These tables provide the information to determine optimum setting values:
Minimum Packet Size Definition
Min Setting Min Packet Size
1 16
2 32
3 48
4 64
5 80
6 96
LRS455A-C, LRS455A-CE, LRS455-T
User-Reference Manual