User's Manual

62 Document Number: 0100SM1401 Issue: 05-15
Hot Standby Full Duplex Radio - QH450
Introduction
Welcome to the Quick Start Guide for the QH450 Hot Standby full duplex radio. This section provides additional installation
considerations, wiring diagrams and operational descriptions. This document should be read in conjunction with the QB450 full
duplex radio Quick Start Guide.
The QH450 is a redundant, hot standby full duplex radio providing automatic changeover facilities.
The QH450 is designed as a modular solution, comprising 2 identical QB450 full duplex radios (standard) linked to a central
monitoring and changeover controller (Hot Standby Controller). Either QB450 may be taken out for maintenance without the
need for system down time. The automatic changeover can be triggered by the online out of tolerance (alarm) conditions based
on either RF and/or user data throughput parameters.
QB450 - Full Duplex Radio
QHHSC - Hot Standby
Controller
QB450 - Full Duplex Radio
Part F – Quick Reference Guide