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MXDR/ATLAS 4500 BASE STATION UHF
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Table Of Contents
ATLAS® 4500 Multimode Station
Introduction
1.1 Using This Manual
1.1.1 Audience
1.1.2 Manual Organization
1.2 Safety Information
1.2.1 Safety Precautions
1.2.2 Hazardous Substances
1.2.3 Warnings and Cautions
1.3 Regulatory Information
1.3.1 FCC Part 15.19 Warning Statement
1.3.2 FCC Part 15.21 Warning Statement
1.3.3 FCC Part 15.105(b) Warning Statement
1.3.4 IC RSS-GEN, Sec 8.4 Warning Statement
1.3.5 IC RSS-GEN, Sec 8.3 Warning Statement
1.3.6 IC RSS-102, Sec 2.6 Warning Statements
Product Overview
2.1 Functional Description
2.1.1 Architecture
2.1.2 Usability and Maintainability
2.1.3 Design and Performance
2.2 Hardware Description
2.2.1 Block Diagram
2.2.2 Front Panel Indicator LEDs
2.2.3 Rear Panel Connectors
2.3 Software Description
2.4 Specifications
Installation and Configuration
3.1 Rack Installation
3.2 Connections
3.3 Initial Configuration
Alignment
Maintenance
5.1 Software Updates
Technical Support and Service
6.1 Contacting EFJohnson
6.1.1 Gather Information Before Calling EFJohnson
6.1.2 Contact Information
6.2 Product Warranty and Repair
6.2.1 Online Product Registration
6.3 Returns for Repairs
6.4 Replacement Parts
6.5 Internet Home Page
UHF Circuit Descriptions
A.1 380-520 MHz Exciter Module
A.1.1 General Description
A.1.2 Schematic Description
A.1.2.1 Frequency Synthesizers
A.1.2.2 TX VCO Board
A.1.2.3 Reference Clocks
A.1.2.4 RF Carrier Generation & Modulation
A.1.2.5 RF Filter Amp Section
A.1.2.6 DPD Loop
A.1.2.7 Exciter DC Supplies
A.2 380-520 MHz Receiver Module
A.2.1 General Description
A.2.2 Schematic Description
A.2.2.1 Frequency Synthesizer
A.2.2.2 RX VCO Board
A.2.2.3 Reference Clock
A.2.2.4 Front End
A.2.2.5 90 MHz IF Section
A.2.2.6 Receiver DC Supplies
A.3 380-520 MHz Power Amplifier
A.3.1 General Description
A.3.2 Schematic Description
A.3.2.1 General
A.3.2.2 Attenuator
A.3.2.3 Driver Module
A.3.2.4 Output Power Amp
A.3.2.5 Power Coupler
A.3.2.6 Power Detector
A.3.2.7 Harmonic Filter
A.3.2.8 PTT Power Control
A.3.2.9 Auxiliary Circuits
A.4 Controller Board
A.4.1 General Description
A.4.2 Schematic Description
A.4.2.1 PA Interface
A.4.2.2 Exciter Interface
A.4.2.3 RX Interface
A.4.2.4 DSP Interface
A.4.2.5 Fan Control
A.4.2.6 External Port and Serial Links
A.4.2.7 Auxiliary
A.4.2.8 Firmware
A.5 Audio Logic Board
A.5.1 General Description
A.5.2 Schematic Description
A.6 Power Supply
A.6.1 General Description
A.6.2 Schematic Description
A.6.2.1 Mains-to-48V PSU
A.6.2.2 Filters
A.6.2.3 Switch Mode DC-to-DC Convertors
ATLAS 4500 Multimode Station Technical Manual
December 2016
A-17
Power Supply
Appendix A - UHF Ci
rcuit Descriptions
Each supply capacity is approximatel
y 1.5 A and is fo
ld-back protected.
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