User Manual

Installation and Operator Handbook Introduction
AMX–MA–00651 Issue 0.02 (USA)
4
The DRB-25 provides the following features:
• Automatically and concurrently supports the digital mobile and FM analog radios (TIA/EIA 603
including CTCSS selective calling).
• VHF (136-174 MHz) or UHF (400-470 MHz) frequency bands.
• 60 W or 125 W RF output.
• Configurable as single or dual channel with any mix of frequency bands and output power levels.
• 512 programmable channels per radio, with each channel programmable as APCO Project 25 digital or
TIA/EIA 603 analog.
• Programmable channel scan of up to eight channels.
• Optional RS232, RS485, Ethernet and general purpose I/O interfaces.
• Optional 2 wire or 4 wire + E&M wire line interfaces for remote control or telephone interconnect.
• Compatible with industry standard tone remote control consoles.
• Compatible with Microwave Links using 4 Wire and E & M signaling.
• User friendly Windows configuration and diagnostic software for local or remote configuration.
• Self test diagnostic routines.
• 240/110 VAC or 12, 24 or 48 VDC versions.
• Available as a standard 19” rack mount sub-rack, as a desktop unit or housed in a secure floor mount
cabinet.
In addition, the DRB-25:
• Enables a gradual migration from analog to digital terminals, or from one frequency band to another,
communicating across-mode and across-bands while the migration is taking place.
• Provides link radio functions to other base stations or repeaters for geographically remote areas.
• Enables upgrade from a single-channel to dual-channel at low cost.
• Provides a low cost upgrade path from the dual-channel to a multi-channel base station.
1.2 PHYSICAL ARRANGEMENT
1.2.1 General
The DRB-25 is a completely self-contained cabinet unit housing all the components necessary to support one
(single-channel) or two (dual-channel) radio configurations. The basic housing is provided with feet for
desktop use and may optionally be supplied with mounting brackets for rack-mounting. Alternatively the
entire unit may be installed in a secure cabinet.
Integral to the housing are the system power supplies, fans and airflow control for cooling of modules and a
common backplane into which the Transceiver, Controller and Interface Modules are plugged. A single-
channel DRB-25 requires one Controller Module and the following plug-in modules: