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
5. Configure Point-to-MultiPoint Networks
LUM0020CD Rev June-2020 Page 64 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.
Setup 1PPS Enable / Delay
1. On the Master radio, set the 1 PPS Enable/Delay parameter to 0.
Note: The Mastermust have a 1 PPS pulse on the DTR pin, otherwise the RF network will
not function.
2. Enable the 1 PPS Enable/Delay parameter on the Slave radios.
Slave radios are calibrated at the factory.
Calibrate a Slave Radio in 1PPS Enable / Delay Mode
1. On the Master radio, trigger an oscilloscope on the 1 PPS pulse on the DTR line.
2. Monitor the CD line of the Slave radio.
3. Optional: If the timing on the Slave radio differs from the Master, it may be adjusted via the
value in the Slave radio's 1 PPS Enable/Delay parameter.
Notes
l The difference in time between each incremental integer value is 542.534 nanoseconds
(ns).
l Changing the parameter to higher values decreases the Slave radio time delay and
changing the parameter to lower values increases the time delay.
l When properly calibrated, the CD line Slave radio outputs a pulse that goes high for about 2
ms in sync with the 1 PPS pulse on the Master radio.
l The output on the Slave radio occurs within 20 microseconds of the input to the Master.
5.6.2. Diagnostics
Important!: The diagnostic program must be run from the Master radio.
Diagnostics
Setting Description
Default Setting 1
Options Any number between 0 and 128
Setup Terminal
Menu
(5) Edit MultiPoint Parameters > (B) Diagnostics
LRS455A-C, LRS455A-CE, LRS455-T
User-Reference Manual
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