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ATLAS 4500 Multimode Station Technical Manual

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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 Multimode
Station installation, new configuration, administration, and maintenance.

1.1.1 Audience

This manual is intended for technical support personnel, system and network
administrators, who install, configure, and maintain the ATLAS 4500.

1.1.2 Manual Organization

This product manual will help you configure and use the ATLAS 4500. This
manual is organized into sections to assist you in locating information quickly and
efficiently. It contains the following sections:

• Product Overview

• Installation and Configuration

• Maintenance

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Содержание ATLAS 4500

Страница 1: ...ATLAS 4500 Multimode Station Technical Manual May 2017 ...

Страница 2: ...echnologies 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 trademarks of their respective manufacturers Information in this manual is subject to change without notice ATLAS 4500 Multimode Station Technical Manual May 2017 ...

Страница 3: ...Statement 1 4 FCC Part 15 105 b Warning Statement 1 4 IC RSS GEN Sec 8 4 Warning Statement 1 6 IC RSS GEN Sec 8 3 Warning Statement 1 7 IC RSS 102 Sec 2 6 Warning Statements 1 7 Section 2 Product Overview 2 1 Functional Description 2 1 Architecture 2 2 Usability and Maintainability 2 2 Design and Performance 2 2 Hardware Description 2 3 Block Diagram 2 3 Front Panel Indicator LEDs 2 4 Rear Panel C...

Страница 4: ...Product Warranty and Repair 6 2 Online Product Registration 6 3 Returns for Repairs 6 3 Replacement Parts 6 3 Internet Home Page 6 4 Appendix A VHF Circuit Descriptions A 1 135 175 MHz Exciter Module A 1 General Description A 2 Schematic Description A 2 Frequency Synthesizers A 2 TX VCO Board A 3 Reference Clocks A 3 RF Carrier Generation Modulation A 4 RF Filter Amp Section A 4 DPD Loop A 4 Excit...

Страница 5: ...tector A 11 Harmonic Filter A 11 PTT Power Control A 11 Auxiliary Circuits A 11 Controller Board A 11 General Description A 12 Schematic Description A 12 PA Interface A 12 Exciter Interface A 13 RX Interface A 13 DSP Interface A 13 Fan Control A 14 External Port and Serial Links A 14 Auxiliary A 14 Firmware A 15 Audio Logic Board A 15 General Description A 15 Schematic Description A 16 Power Suppl...

Страница 6: ...iv ATLAS 4500 Multimode Station Technical Manual May 2017 Table of Contents continued ...

Страница 7: ...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 2 3 2 3 Front Panel 2 4 2 4 Rear Panel and Connectors 2 5 ...

Страница 8: ...vi ATLAS 4500 Multimode Station Technical Manual May 2017 List of Figures continued Figure Page ...

Страница 9: ...1 ATLAS 4500 Antennas 1 5 1 2 ATLAS 4500 Antennas Antennes 1 7 2 1 Front Panel LEDs 2 4 2 2 Rear Panel Connectors 2 6 2 3 General Specifications 2 7 2 4 Transmitter Specifications 2 7 2 5 Receiver Specifications 2 8 2 6 Standards Compliance 2 8 6 1 Customer Service Contact Information 6 2 ...

Страница 10: ...viii ATLAS 4500 Multimode Station Technical Manual May 2017 List of Tables continued Table Page ...

Страница 11: ...tallation new configuration administration and maintenance 1 1 1 Audience This manual is intended for technical support personnel system and network administrators who install configure and maintain the ATLAS 4500 1 1 2 Manual Organization This product manual will help you configure and use the ATLAS 4500 This manual is organized into sections to assist you in locating information quickly and effi...

Страница 12: ... with all risk assessments relevant to the work site and the task They must then comply with the control measures detailed in those risk assessments References covering safety regulations health hazards and hazardous substances are detailed under the following WARNINGS section These are referred to in the tasks when encountered Adequate precautions must be taken to ensure that other personnel do n...

Страница 13: ...ze any possible shock hazard from an external power supply or lightning strike the chassis of the equipment cabinet must to be connected to an electrical safety earth connection Do not operate in an explosive atmosphere Do not operate this equipment in the presence of flammable gases or fumes operation of any electrical equipment in such an environment constitutes a definite safety hazard Do not s...

Страница 14: ...red operation 1 3 3 FCC Part 15 21 Warning Statement The grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance Such modifications could void the user s authority to operate the equipment 1 3 4 FCC Part 15 105 b Warning Statement This equipment has been tested and found to comply with the limits for a Class B digital device pursua...

Страница 15: ...he ATLAS 4500 has been approved to operate with the antenna types listed in Table 1 1 with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Table 1 1 ATLAS 4500 Antennas Antenna Manufacturer and Model...

Страница 16: ...e interference This device must accept any interference including interference that may cause undesired operation of the device Français Le présent appareil est conforme aux CNR d Industrie Canada applicables aux appareils radio exempts de licence L exploitation est autorisée aux deux conditions suivantes L appareil ne doit pas produire de brouillage L utilisateur de l appareil doit accepter tout ...

Страница 17: ... 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 proximity with the eyes face or any exposed body parts while the repeater is transmitting Do not operate the transmitter of a stationary radio base station or marine radio when a person is within 22 1 feet 6 72 met...

Страница 18: ...t dans les 22 1 pieds 6 71 mètres de l antenne Ne pas faire fonctionner le répéteur dans des atmosphères explosives ou inflammables L énergie du répéteur qui transmet pourrait déclencher des détonations ou provoquer une explosion Ne pas faire fonctionner le répéteur sans l antenne appropriée installée Ne pas laisser les enfants utiliser l émetteur équipé du matériel de répéteur NOTE The preceding ...

Страница 19: ...ription Hardware Description Software Description Specifications 2 1 Functional Description The ATLAS 4500 Figure 2 1 is a fully software definable IP based linear base station that operates in P25 Phase 1 and P25 Phase 2 It has both analog and P25 mixed mode capabilities It is available in a range of frequency bands including VHF UHF and 700 800 MHz ...

Страница 20: ... 2 base station in the industry packaged in an ultra compact 2RU size chassis maximizing rack space usage AC or DC power input AC power input can be 90 264 VAC DC power input can be 24 58 VDC 2 1 2 Usability and Maintainability Modular architecture allows flexible expansion of sites and seamless scalability of the system Interactive front panel design displays status and diagnostics for rapid trou...

Страница 21: ...mponents that greatly simplify operation Full spectrum coverage in VHF UHF and 700 800 MHz 2 2 Hardware Description This section contains information on the following topics Block Diagram Front Panel Indicator LEDs Rear Panel Connectors 2 2 1 Block Diagram The block diagram in Figure 2 2 shows the interconnection and communication paths between ATLAS 4500 internal components Figure 2 2 Block Diagr...

Страница 22: ...in analog mode Rx A Green Station is receiving in analog mode P25 Phase 1 mode or Slot 1 in P25 Phase 2 mode Rx B Green Station is receiving in Slot 2 in P25 Phase 2 mode LINK Yellow Link is up P25 PHASE 1 Orange Station is operating in P25 Phase 1 mode P25 PHASE 2 Yellow Station is operating in P25 Phase 2 mode Tx A Red Station is transmitting in analog mode P25 Phase 1 mode or Slot 1 in P25 Phas...

Страница 23: ...he connectors Figure 2 4 Rear Panel and Connectors DB 25 Connectors marked by connect to the ATLAS 4500 logic card N Connector Transmitter Serial BNC Connector 10 MHz Dual Ethernet Primary Audio Micro USB Power Switch AC Power Connector N Connector Receiver BNC Connector 1 PPS Wire 4 Wire E M for Transmit and Receive Secondary Audio not used 4 Wire 4 Wire E M for RX2 12 pins for Repeater I O 13 pi...

Страница 24: ...ver 4 Wire from the receiver Secondary Audio RJ 45 socket 8 pin Not used Secondary 4 Wire 4 Wire E M Connection Designed to receive audio over 4 wire from optional Receiver 2 BNC Connector 1 PPS BNC F 1 pulse per second input from the GPS receiver BNC Connector 10 MHz BNC F 10 MHz reference from the frequency reference Dual Ethernet Dual RJ47 Double stacked RJ 47 Ethernet connector Connects to the...

Страница 25: ...Compliance Parts 15 and 90 Modulation TX C4FM H DQPSK Linear and Linear Simulcast RX C4FM H CPM FM Table 2 4 Transmitter Specifications Parameter VHF UHF 700 800 MHz Frequency Range 136 174 MHz 380 520 MHz 763 776 MHz 850 870 MHz RF Power Output 1 100Watts Electronic Switching Bandwidth Full Bandwidth Duty Cycle 100 Output Impedance 50 Spurious Emissions 90 dB Harmonic Emissions 90 dB Modulation F...

Страница 26: ...on TIA603D 72 dB Digital Adjacent Channel Rejection 60 dB Intermodulation Rejection 82 dB Spurious and Image Response Rejection 90 dB Audio Response 1 3 dB from 6 dB per octave de emphasis 300 3000 Hz referenced To 1000 Hz at lineoutput Analog Audio distortion at 1000 Hz 2 Digital Audio distortion at 1000 Hz As per TIA Analog Hum Noise TIA 45 dB Digital Hum Noise TIA As per TIA RF Input Impedance ...

Страница 27: ...livering the ATLAS 4500 to the customer Refer to Section 6 for information on obtaining technical support and service 3 2 Connections EFJohnson makes all ATLAS 4500 cable connections for the customer Refer to Section 6 for information on obtaining technical support and service 3 3 Initial Configuration EFJohnson performs all initial configuration before delivering the ATLAS 4500 to the customer Re...

Страница 28: ... 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 Technical Manual ...

Страница 29: ...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 ...

Страница 30: ...4 2 ATLAS 4500 Multimode Station Technical Manual May 2017 Section 4 Alignment ...

Страница 31: ...hat 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 Management System NMS to perform software updates for the ATLAS 4500 Refer to the ATLAS 6100 6200 Network Management System NMS Technical Manual ...

Страница 32: ...5 2 ATLAS 4500 Multimode Station Technical Manual May 2017 Software Updates Section 5 Maintenance ...

Страница 33: ...tion Before Calling EFJohnson When contacting EFJohnson Technologies for technical support collect and have available all pertinent information such as specific site identification equipment models and any other relevant information that may be needed by technical support 6 1 2 Contact Information The Customer Service Department of EFJohnson Technologies provides customer assistance on technical p...

Страница 34: ...TX 75038 2401 800 328 3911 This information may also be requested from the Warranty Department by phone See Table 6 1 The Warranty Department may be contacted for warranty service reports claim forms or any other questions concerning warranties or warranty service Table 6 1 Customer Service Contact Information Method Toll Free Phone 800 328 3911 all except Multi Net Extensions Option 1 Orders and ...

Страница 35: ...Repair service cannot be performed by customers and is not available through local authorized EFJohnson Technologies land mobile radio service centers The equipment must be returned to the EFJohnson Technologies Repair Depot However before returning equipment contact the Customer Service Department Repair Depot for the correct Ship To address 6 4 Replacement Parts Replacement parts can be ordered ...

Страница 36: ...rnet 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 address is http www efjohnson com ...

Страница 37: ...apter contains a general description and a schematic description 135 175 MHz Exciter Module 135 175 MHz Receiver Module 135 175 MHz Power Amplifier Controller Board Audio Logic Board Power Supply A 1 135 175 MHz Exciter Module This section contains information on the following Exciter Module components Frequency Synthesizers TX VCO Board Reference Clocks RF Carrier Generation Modulation RF Filter ...

Страница 38: ...n divider input and the error loop 1st mixer LO amp IC16 This signal is compared with the 10 MHz reference oscillator frequency and the correction voltage from the synthesiser s charge pump output is filtered then amplified by the non inverting low noise op amp IC10 This correction voltage is fed back to the VCO to maintain loop lock as well as being fed to the Controller through TX VCO VOLTS CN3 ...

Страница 39: ...rol of the Controller 2 MMIC buffers feed the synthesizer and main outputs The power supply to the VCO consists of an 8 V regulator and active filter for maximum noise rejection located on the exciter PCB The 8 V supply consists of IC11 TR6 and associated components The PLL control line varies the VCO frequency SKT 1 A 1 2 3 Reference Clocks A stable 10 MHz reference is generated by X1 a temperatu...

Страница 40: ...cond RF band pass filter then the second MMIC amp before being output to the Power Amplifier module through CN1 The135 175 MHz band pass filter function is supplied by selectable bands 3 bands are fitted 135 147 MHz 146 161 MHz and 161 175 MHz Each 1st band pass filter I P is fed by switch IC20 then the filter O P into switch IC18 to make up a selector circuit that switches the frequency band prog...

Страница 41: ...a for pre distortion correction tables is provided by IC27 RAM The FPGA DPD filter data is stored in the serial Flash ROM IC35 Inside the FPGA IC the 2 52 MSps 810 kHz IF is decimated by 7 to effectively give a 1 9 converted 360 MSps 90 kHz signal plus other unwanted signals This is then passed though a narrow 90 kHz IF band pass FIR filter to removing other products and noise The correction softw...

Страница 42: ... following Receiver Module components Frequency Synthesizer RX VCO Board Reference Clock Front End 55 MHz IF Section Receiver DC Supplies A 2 1 General Description The receiver module converts a low level RF signal from an antenna input to a 55 MHz intermediate frequency IF output for processing with the DSP RX Logic board The module has two SMB connectors for RF I P and 55 MHz IF O P The receiver...

Страница 43: ... signal is first buffered by a very high isolation circuit consisting of a MMIC on the VCO and a 1 dB pad and a MMIC amplifier IC17 at 22 dBm Frequency programming data for the exciter is sent to IC6 from the Controller through a serial data SK1 18 Clock SK1 15 Strobe SK1 17 A lock detect signal from IC6 is also fed to the Controller through RX LD SK1 16 A 2 2 2 RX VCO Board The plug on VCO board ...

Страница 44: ...cy sub band in use 2 frequency bands are used 135 155 MHz and 155 175 MHz The 4 band pass filter switches use 4 lines SK1 19 SK1 20 SK1 21 SK1 22 A 2 2 5 55 MHz IF Section A VCO signal generated by the synthesiser is fed into a RF mixer X8 where it produces a fixed frequency output of 55 MHz This IF output is then fed through an input matching network through a 2 pole crystal filter FL7 and associ...

Страница 45: ... A 3 135 175 MHz Power Amplifier This section contains information on the following Power Amplifier components Attenuator Driver Module Output Power Amp Power Coupler Power Detector Harmonic Filter PTT Power Control Auxiliary Circuits A 3 1 General Description The PA contains the following components Variable attenuator Driver module Main power amp Cooling system and heat sensor Coupler for DPD sy...

Страница 46: ... 3 2 4 Output Power Amp The PA output power amp stage uses a high performance power FET in a Gemini package This is mounted on a copper heat spreader plate on a fan cooled aluminium heatsink The input matching uses a broadband 9 1 impedance transformer balun loaded with ferrite to prevent oscillations This feeds a stabilization network of series resistors gate loads and a parallel resistor to prev...

Страница 47: ...7 Harmonic Filter Next follows a 4 stage elliptical low pass filter inside a screened cover This provides attenuation of all harmonics A 3 2 8 PTT Power Control The PTT line from CN 8 controls the Switch TR2 This switches 24 V and allows PA FET bias to operate PA bias is nominally set for 4 V at CN2 7 and pot adjusted for 3 A A 3 2 9 Auxiliary Circuits The PA contains a 3 3 V regulator IC7 with 5 ...

Страница 48: ...t I P used for 10 MHz ref switch control in the Exciter DSP I F port Exciter I F port Receiver I F port Relay O P LED I F Configuration links A 4 2 Schematic Description A 4 2 1 PA Interface The interface has 14 pins The PA interface provides 24 V 450 mA and 5 V 10 mA It controls the PA by means of the PTT line and the bias line nominally 4 V at 77 F 25 C The forward power and reverse power detect...

Страница 49: ...Vpp using Ex ref line The Controller can select External reference using Ext osc sw line This is done by software control to allow correct handover A 4 2 3 RX Interface There are RX interfaces for 2 receivers This allows a second diversity RX option The RX connector is a 30 pin connector Most lines are common for both This includes 12 V and 3 3 V supplies I2C bus for the serial flash used for synt...

Страница 50: ...an A pulse RPM sensor allows RPM to be measured A 4 2 6 External Port and Serial Links The Controller PCB has an external 10 pin port for diagnostic use with jumper links JMP2 and JMP3 to select Debug access to MCU position A Debug access to Exciter position C The Controller can be talked to in position A of links JMP2 and JMP3 to its serial port 2 and debug or loader program used To use the loade...

Страница 51: ... interfaces with Exciter for frequency setting and PTT indication Controls EEPROM reading and writing from various modules Allows it to be controlled from the Debug point initially Later DSP can select Configuration data serial number etc Plug and play system for all modules Reads config data from all modules Other operational software A 5 Audio Logic Board A 5 1 General Description The Audio Logi...

Страница 52: ...onvertors A 6 1 General Description The base station main power supply contains the following 100 240 VAC to 48 VDC supply Mains Filter 48 V I P and 3 O P Filters DC to DC 5 2 V PSU DC to DC 13 8 V PSU DC to DC 24 V PSU Cable and connector to main Controller PCB and PA Shielded case A 6 2 Schematic Description A 6 2 1 Mains to 48V PSU The base station uses a switch mode power supply 100 240 VAC in...

Страница 53: ...dix 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 by IC3 Each supply capacity is 1 5 A and is fold back protected ...

Страница 54: ...A 18 ATLAS 4500 Multimode Station Technical Manual May 2017 Power Supply Appendix A VHF Circuit Descriptions ...

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