User's Manual
Table Of Contents
- Part A – Preface
- Safety Information
- Revision History
- Important Information
- Compliance Information
- Part B – Feature Overview
- Introduction
- Features and Benefits
- Q Data Radio Range
- Part C – System Topologies & Operating Modes
- System Topologies
- Operating Modes
- Part D – Feature Detail
- Hardware
- Efficiency and Bandwidth
- Connectivity
- Ease of Use
- Security
- Part E – Radio Planning and Design
- Radio Path analysis
- BER & Fade Margin
- Radio Accessories
- RF Feeders and Protection
- Part F – Quick Reference Guide
- Introduction
- Half Duplex Radio - QR450
- Full Duplex Radio - QB450
- Hot Standby Half Duplex Radio - QP450
- Hot Standby Full Duplex Radio - QH450
- LED indicators
- Connecting Antennas
- Communication Ports
- Activating Transmitter
- Factory Default
- Digital I/O
- Connecting to Web User Interface (WUI)
- Resolving Ethernet Connection Issues
- Part G– Quick Start Guide
- Step-by-Step Point to Point Setup
- Step-by-Step eDiags Setup
- System Topology Configuration
- Serial and MODBUS
- Single Frequency (Simplex) Mode
- E-Series Emulation Mode
- Part H – Advanced
- Connectivity
- Ease of Use
- Security
- Part I – Installation & Commissioning
- Optimising the Antenna for Rx Signal
- Commissioning
- Part J – Firmware Updating and Maintenance
- Firmware Updating
- Global Firmware Updating
- Fuse Replacement - QR450
- Part K – Open Source License Acknowledgements
- Part L – Support Options
12 Document Number: 0100SM1401 Issue: 05-15
Point to Multipoint (PTMP)
A Point to Multipoint (PTMP) network is normally chosen when a central site (i.e.: The HOST application) needs to
communicate with multiple REMOTE sites.
Point to Multipoint (PTMP) operation requires the Entry Point site to have adequate RF coverage of all Remote sites. A PTMP
offers optimal available bandwidth and data latency when multiple remote sites are required.
In a multiple access radio system (MAS), communication occurs from a common site (the Entry Point) to all others, either
using a half duplex or simplex radio channel. In addition, remote sites can communicate to each for peer to peer messaging,
via the Entry Point.
For two frequency systems, to facilitate efficient data communication and support features such as the ‘Channel Share+’
collision avoidance mechanism, it is recommended that the Entry Point be a full duplex radio (QB/QH).
Utilising a half duplex Entry Point radio is possible, however some features may not be available and system performance may
be lower when compared to using a full duplex entry point.
In most applications, this type of system topology is more efficient than other topologies.
Part C – System Topologies & Operating Modes