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E.F. Johnson Company ATLAS 4500 Technical Manual

Manual is about: Multimode Station

Summary of ATLAS 4500

  • Page 1

    A tlas ® 4500 multimode station technical manual . May 2017.

  • Page 2

    Copyright © 2016-2017 by ef johnson technologies, inc. The efjohnson technologies logo and stargate are trademarks of ef johnson technologies, inc. Atlas is a registered trademark of efjohnson technologies. All other company and/or product names used in this manual are trademarks and/or registered t...

  • Page 3

    Atlas 4500 multimode station technical manual may 2017 i section 1 - introduction 1-1 using this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

  • Page 4

    Ii atlas 4500 multimode station technical manual may 2017 table of contents (continued) rack installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 connections . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 5

    Atlas 4500 multimode station technical manual may 2017 iii table of contents (continued) front end. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8 55 mhz if section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 6

    Iv atlas 4500 multimode station technical manual may 2017 table of contents (continued).

  • Page 7: List of Figures

    Atlas 4500 multimode station technical manual may 2017 v list of figures figure page 2.1 atlas 4500 introductory view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 8

    Vi atlas 4500 multimode station technical manual may 2017 list of figures (continued) figure page.

  • Page 9: List of Tables

    Atlas 4500 multimode station technical manual may 2017 vii list of tables table page 1.1 atlas 4500 antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5 1.2 atlas 4500 antennas / antennes . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Page 10

    Viii atlas 4500 multimode station technical manual may 2017 list of tables (continued) table page.

  • Page 11: Introduction

    Atlas 4500 multimode station technical manual may 2017 1-1 s e c t i o n introduction this section contains information on the following topics: • using this manual • safety information • regulatory information 1.1 using this manual this manual is the core document for information on atlas® 4500 mul...

  • Page 12: 1.2 Safety Information

    1-2 atlas 4500 multimode station technical manual may 2017 safety information section 1 - introduction • technical support and service 1.2 safety information 1.2.1 safety precautions these safety precautions, warnings and cautions advise personnel of specific hazards that may be encountered during t...

  • Page 13: 1.2.3 Warnings and Cautions

    Atlas 4500 multimode station technical manual may 2017 1-3 regulatory information section 1 - introduction 1.2.3 warnings and cautions observe all warnings and cautions when working on or around this equipment. 1.3 regulatory information this section contains the following statements: • fcc rf warni...

  • Page 14

    1-4 atlas 4500 multimode station technical manual may 2017 regulatory information section 1 - introduction proper operation of this repeater under normal conditions results in user exposure to rf energy below standard acceptable limits. • do not allow the antenna to touch or come in very close proxi...

  • Page 15

    Atlas 4500 multimode station technical manual may 2017 1-5 regulatory information section 1 - introduction • connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • consult the dealer or an experienced radio/tv technician for help. • do not operate...

  • Page 16

    1-6 atlas 4500 multimode station technical manual may 2017 regulatory information section 1 - introduction 1.3.5 ic rss-gen, sec 8.4 warning statement english this device complies with industry canada license-exempt rss standard. Operation is subject to the following two conditions: • this device ma...

  • Page 17

    Atlas 4500 multimode station technical manual may 2017 1-7 regulatory information section 1 - introduction 1.3.6 ic rss-gen, sec 8.3 warning statement english the atlas 4500 has been approved by industry canada to operate with the antenna types listed in table 1.2 with the maximum permissible gain a...

  • Page 18

    1-8 atlas 4500 multimode station technical manual may 2017 regulatory information section 1 - introduction • do not operate the repeater without the proper antenna installed. • do not allow children to operate transmitter equipped repeater equipment. Français le bon fonctionnement de ce répéteur dan...

  • Page 19: Product Overview

    Atlas 4500 multimode station technical manual may 2017 2-1 s e c t i o n product overview this chapter contains the following sections: • functional description • hardware description • software description • specifications 2.1 functional description the atlas 4500 (figure 2.1) is a fully software-d...

  • Page 20: 2.1.1 Architecture

    2-2 atlas 4500 multimode station technical manual may 2017 functional description section 2 - product overview figure 2.1 atlas 4500 introductory view 2.1.1 architecture • leverages a common hardware platform to support the following: - 12.5 khz, 20 khz, and 25 khz analog - 12.5khz fdma p25 phase i ...

  • Page 21: 2.2 Hardware Description

    Atlas 4500 multimode station technical manual may 2017 2-3 hardware description section 2 - product overview • high-power ultra linear ultra compact rf power amplifier uses digital and rf techniques and components that greatly simplify operation • full-spectrum coverage in vhf, uhf, and 700/800 mhz ...

  • Page 22

    2-4 atlas 4500 multimode station technical manual may 2017 hardware description section 2 - product overview 2.2.2 front panel indicator leds figure 2.3 shows the atlas 4500 front panel. Table 2.1 contains descriptions of the front panel indicator leds. Figure 2.3 front panel table 2.1 front panel l...

  • Page 23: 2.2.3 Rear Panel Connectors

    Atlas 4500 multimode station technical manual may 2017 2-5 hardware description section 2 - product overview 2.2.3 rear panel connectors figure 2.4 shows the atlas 4500 rear panel and its connectors. Table 2.2 contains descriptions of the connectors. Figure 2.4 rear panel and connectors db 25* conne...

  • Page 24: 2.3 Software Description

    2-6 atlas 4500 multimode station technical manual may 2017 software description section 2 - product overview 2.3 software description administrators use the atlas® 6100/6200 network management system (nms) to configure and maintain the atlas 4500. Refer to the atlas 6100/6200 network management syst...

  • Page 25

    Atlas 4500 multimode station technical manual may 2017 2-7 specifications section 2 - product overview 700 / 800 mhz table 2.3 general specifications parameter values mounting 19” rack or shelf dimensions (height x width x depth) 3.5" x 19" x 17.9" (89 x 483 x 455mm) weight 24.25 pounds (11 kg) oper...

  • Page 26

    2-8 atlas 4500 multimode station technical manual may 2017 specifications section 2 - product overview analog fm hum & noise (s/n ratio) 45 db maximum deviation (analog) ± 2.5 khz ± 2.5 khz ± 5 khz maximum deviation (digital) ± 3110 hz ± 3110 hz ± 3110 hz table 2.5 receiver specifications parameter ...

  • Page 27: 3.1 Rack Installation

    Atlas 4500 multimode station technical manual may 2017 3-1 s e c t i o n installation and configuration this chapter contains the following sections: • rack installation • connections • initial configuration 3.1 rack installation efjohnson performs all rack installation before delivering the atlas 4...

  • Page 28

    3-2 atlas 4500 multimode station technical manual may 2017 initial configuration section 3 - installation and configuration administrators use the atlas 6100/6200 network management system (nms) to configure and maintain the atlas 4500. Refer to the atlas 6100/6200 network management system (nms) te...

  • Page 29: Alignment

    Atlas 4500 multimode station technical manual may 2017 4-1 s e c t i o n alignment the atlas 4500 does not require alignment. Refer to section 6 for information on obtaining technical support and service..

  • Page 30

    4-2 atlas 4500 multimode station technical manual may 2017 section 4 - alignment.

  • Page 31: Maintenance

    Atlas 4500 multimode station technical manual may 2017 5-1 s e c t i o n maintenance the atlas 4500 contains no parts that the customer may maintain. Refer to section 6 for information on obtaining technical support and service. 5.1 software updates administrators use the atlas 6100/6200 network man...

  • Page 32

    5-2 atlas 4500 multimode station technical manual may 2017 software updates section 5 - maintenance.

  • Page 33: 6.1 Contacting Efjohnson

    Atlas 4500 multimode station technical manual may 2017 6-1 s e c t i o n technical support and service efjohnson technical personnel are available to provide both onsite and online service, in accordance with the existing support agreement. 6.1 contacting efjohnson if efjohnson technologies technica...

  • Page 34

    6-2 atlas 4500 multimode station technical manual may 2017 product warranty and repair section 6 - technical support and service you may also contact the customer service department by mail. Please include all information that may be helpful in solving your problem. Customer service department efjoh...

  • Page 35: 6.3 Returns For Repairs

    Atlas 4500 multimode station technical manual may 2017 6-3 returns for repairs section 6 - technical support and service 6.2.1 online product registration efjohnson offers greater convenience through online product warranty registration. Registering efjohnson products online allows customers to rece...

  • Page 36: 6.5 Internet Home Page

    6-4 atlas 4500 multimode station technical manual may 2017 internet home page section 6 - technical support and service 6.5 internet home page efjohnson technologies has an internet site that can be accessed for information on the company about such things as products, systems, and regulations. The ...

  • Page 37: A P P E N D I X

    Atlas 4500 multimode station technical manual may 2017 a-1 a p p e n d i x chapter 6 vhf circuit descriptions this chapter contains descriptions of the following vhf atlas 4500 internal components. For each of the following components, this chapter contains a general description and a schematic desc...

  • Page 38: A.1.1 General Description

    A-2 atlas 4500 multimode station technical manual may 2017 135-175 mhz exciter module appendix a - vhf circuit descriptions a.1.1 general description the exciter module generates the low level rf transmitter signal that is amplified to nominal output power level by the power amplifier. The exciter m...

  • Page 39

    Atlas 4500 multimode station technical manual may 2017 a-3 135-175 mhz exciter module appendix a - vhf circuit descriptions synthesizer ic24 and associated components provide a reference of 120.47 mhz for the error loop 2nd mixer lo amp ic21. This 120.45 mhz signal is frequency locked to the 10 mhz ...

  • Page 40

    A-4 atlas 4500 multimode station technical manual may 2017 135-175 mhz exciter module appendix a - vhf circuit descriptions a.1.2.4 rf carrier generation & modulation rf carrier modulation type phase 1 fm or lsm and phase 2 h-dqpsk is generated within ic31 fpga and ic32 dds from a serial digital str...

  • Page 41

    Atlas 4500 multimode station technical manual may 2017 a-5 135-175 mhz exciter module appendix a - vhf circuit descriptions after a pad the 119.64 mhz if is down-converted with the 120.45 mhz local signal from buffer amp ic21 by mixer m2 to result in an 810 khz if signal. The local oscillator for th...

  • Page 42: A.2.1 General Description

    A-6 atlas 4500 multimode station technical manual may 2017 135-175 mhz receiver module appendix a - vhf circuit descriptions ic30 and ic48 are linear regulators regulating the +5 v supply down to +3.3 v dc for the synthesizers. Ic33 is a multi-circuit buck dc-dc converters and low drop out regulator...

  • Page 43: A.2.2 Schematic Description

    Atlas 4500 multimode station technical manual may 2017 a-7 135-175 mhz receiver module appendix a - vhf circuit descriptions a.2.2 schematic description a.2.2.1 frequency synthesizer rf is output from the vco board on sku2-1 is applied to the fractional-n synthesiser ic6 main divider input. This sig...

  • Page 44

    A-8 atlas 4500 multimode station technical manual may 2017 135-175 mhz receiver module appendix a - vhf circuit descriptions a.2.2.3 reference clock a stable 10 mhz reference is generated by x1, a temperature controlled crystal oscillator (tcxo) and fed to the synthesiser ic6 through an amplifier co...

  • Page 45: A.3.1 General Description

    Atlas 4500 multimode station technical manual may 2017 a-9 135-175 mhz power amplifier appendix a - vhf circuit descriptions ic4 is configured as a boost dc-dc converter and provides +25 v dc output. Ic3 regulates +5.2 v supply down to +5 vdc. Ic48 regulates +5 v supply down to +3.3 vdc. A.3 135-175...

  • Page 46: A.3.2 Schematic Description

    A-10 atlas 4500 multimode station technical manual may 2017 135-175 mhz power amplifier appendix a - vhf circuit descriptions a.3.2 schematic description a.3.2.1 general the rf input is ~ 12dbm into cn1. The pa provides 1-100 w output across 135 – 175 mhz band at the main n type connector. The main ...

  • Page 47: A.4 Controller Board

    Atlas 4500 multimode station technical manual may 2017 a-11 controller board appendix a - vhf circuit descriptions a.3.2.5 power coupler the pa feeds an output rf coupler port provides about ~4dbm at 100w output. This for the dpd use, it is fed back to the exciter. A.3.2.6 power detector next the ou...

  • Page 48: A.4.1 General Description

    A-12 atlas 4500 multimode station technical manual may 2017 controller board appendix a - vhf circuit descriptions • rx interface • dsp interface • fan control • external port and serial links • auxiliary • firmware a.4.1 general description the controller pcb contains the following: • the main micr...

  • Page 49

    Atlas 4500 multimode station technical manual may 2017 a-13 controller board appendix a - vhf circuit descriptions a.4.2.2 exciter interface the exciter interface has 30 pins. The exciter interface provides ~13.8 v at ~0.6 a. The interface includes: • synth – 4 x lines are provided for 4 vco control...

  • Page 50

    A-14 atlas 4500 multimode station technical manual may 2017 controller board appendix a - vhf circuit descriptions the dsp tx modulation data is sent synchronously through the i2sclk, i2sdat, isfrm lines to the exciter fpga. The fpga controls the clock and frame timing of this interface, where dsp p...

  • Page 51: A.5 Audio Logic Board

    Atlas 4500 multimode station technical manual may 2017 a-15 audio logic board appendix a - vhf circuit descriptions the controller sends serial data on 3 lines to the pa 7 bit attenuator atn1, atn2, atn3 for si, clk, le pins on the attenuator ic. The controller has an input port for the temperature ...

  • Page 52: A.5.2 Schematic Description

    A-16 atlas 4500 multimode station technical manual may 2017 power supply appendix a - vhf circuit descriptions a.5.2 schematic description the omap operates all external interfaces and the three serial communication devices. It also interfaces with the controller board through a mcbsp bus and uart. ...

  • Page 53

    Atlas 4500 multimode station technical manual may 2017 a-17 power supply appendix a - vhf circuit descriptions the 3 dc to dc convertors outputs have filter networks to filter rfi noise. A.6.2.3 switch mode dc-to-dc convertors the 48v supply is dc / dc converted to 5 v by ic2, 13.8 v by ic1 and 24 v...

  • Page 54

    A-18 atlas 4500 multimode station technical manual may 2017 power supply appendix a - vhf circuit descriptions.