E.F. Johnson Company ATLAS 4500 Manuals

Manuals and User Guides for E.F. Johnson Company ATLAS 4500. We have 1 E.F. Johnson Company ATLAS 4500 manual available for free PDF download: Technical Manual

E.F. Johnson Company ATLAS 4500 Technical Manual

E.F. Johnson Company ATLAS 4500 Technical Manual (54 pages)

Multimode Station

Brand: E.F. Johnson Company | Category: Accessories | Size: 0.61 MB

Table of Contents

Table of Contents
3
Figure Page
8
Table Page
10
Section 1 - Introduction

11
- Using this Manual
  
  11
  - Audience
    11
  - Manual Organization
    11
- Safety Information
  
  12
  - Safety Precautions
    12
  - Hazardous Substances
    12
  - Warnings and Cautions
    13
- Regulatory Information
  
  13
Section 2 - Product Overview

19
- Functional Description
  
  19
  - Architecture
    20
  - Usability and Maintainability
    20
  - Design and Performance
    20
  - ATLAS 4500 Introductory View
    20
- Hardware Description
  
  21
  - Block Diagram
    21
  - Front Panel Indicator Leds
    22
  - Front Panel
    22
  - Front Panel Leds
    22
  - Rear Panel Connectors
    23
  - Rear Panel and Connectors
    23
- Software Description
  
  24
- Specifications
  
  24
  - Rear Panel Connectors
    24
  - General Specifications
    25
  - Transmitter Specifications
    25
  - Receiver Specifications
    26
  - Standards Compliance
    26
- Rack Installation
  
  27
- Connections
  
  27
- Initial Configuration
  
  27
Section 3 - Installation and Configuration

27
Section 4 - Alignment

29
Section 5 - Maintenance

31
- Software Updates
  
  31
Section 6 - Technical Support and Service

33
- Contacting Efjohnson
  
  33
  - Gather Information before Calling Efjohnson
    33
  - Contact Information
    33
- Product Warranty and Repair
  
  34
  - Customer Service Contact Information
    34
  - Online Product Registration
    35
- Returns for Repairs
  
  35
- Replacement Parts
  
  35
- Internet Home Page
  
  36
Appendix A - VHF Circuit Descriptions

37
- 135-175 Mhz Exciter Module
  
  37
  - General Description
    38
  - Schematic Description
    38
    
    Frequency Synthesizers
    38
    
    TX VCO Board
    39
    
    Reference Clocks
    39
    
    RF Carrier Generation & Modulation
    40
    
    RF Filter Amp Section
    40
    
    DPD Loop
    40
    
    Exciter DC Supplies
    41
- 135-175 Mhz Receiver Module
  
  42
  - General Description
    42
  - Schematic Description
    43
    
    Frequency Synthesizer
    43
    
    RX VCO Board
    43
    
    Reference Clock
    44
    
    Front End
    44
    
    55 Mhz if Section
    44
    
    Receiver DC Supplies
    44
- 135-175 Mhz Power Amplifier
  
  45
  - General Description
    45
  - Schematic Description
    46
    
    General
    46
    
    Attenuator
    46
    
    Driver Module
    46
    
    Output Power Amp
    46
    
    Power Coupler
    47
    
    Power Detector
    47
    
    Harmonic Filter
    47
    
    PTT Power Control
    47
    
    Auxiliary Circuits
    47
- Controller Board
  
  47
  - General Description
    48
  - Schematic Description
    48
    
    Exciter Interface
    49
    
    RX Interface
    49
    
    DSP Interface
    49
    
    Fan Control
    50
    
    External Port and Serial Links
    50
    
    Auxiliary
    50
    
    Firmware
    51
- Audio Logic Board
  
  51
  - General Description
    51
  - Schematic Description
    52
- Power Supply
  
  52
  - General Description
    52
    
    Mains-To-48V PSU
    52
    
    Filters
    52
    
    Switch Mode DC-To-DC Convertors
    53

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