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Motorola MTR2000 T5544, Instruction / Field Service Manual

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Motorola MTR2000 T5544 Instruction / Field Service Manual Download Page 308

VHF External Double Circulator Module

8

68P81096E49-C

09/30/05

The following theory of operation describes the operation of the Dual Circulator Assembly at a functional level.  
The information is presented to give the service technician a basic understanding of the functions performed by 
the double circulator in order to facilitate maintenance and troubleshooting to the module level.  Refer to Figure 4 
for a block and interconnect diagram of the Double Circulator assembly.

Functional Operation

The double circulator assembly accepts transmit RF output power from 
the Power Amplifier module and provides 45 dB of isolation between the 
Power Amplifier module and the transmit antenna.  The assembly consists 
of two circulators in a single case, each with a 50

Ω

 load.  Each circulator 

allows forward RF energy to pass through to the output, while routing any 
reflected RF energy to the corresponding 50

Ω

 load.  

Most of the reflected energy is absorbed by the 50

Ω

 load (heat sink) 

mounted) connected to the second circulator.  A thermistor mounted on 
the head sink provides a variable resistance signal proportional to the heat 
sink temperature.  This signal is routed to the Station Control Module via 
the Temp Sense cable and backplane.  If the heat sink temperature exceeds 
a preset threshold, the Station Control Module enables PA cutback mode.   

5

 FUNCTIONAL THEORY OF OPERATION

Figure 4.        Functional Block and Interconnect Diagram for External Double Circulator Module

50 Ohm 

Load

Transmit RF 
From Power 

Amplifier Module

Circulator

Circulator

Low Pass Filter

RF Output 

To Transmit 

Antenna

To Station 

Backplane

T°

50 Ohm 

Load

Thermistor

20K @25°C

Heat Sink

Double Circulator

Summary of Contents for MTR2000 T5544

Page 1: ...MTR2000TM Base Station Repeater and Receiver For Analog Conventional and Trunking Systems 132 174 MHz Instruction Field Service Manual 68P81096E30 F ...

Page 2: ...ed installation instructions for safe operation Slots and openings in the cabinet are provided for ventilation Do not block or cover openings that protect the devices from overheating Only a qualified technician familiar with similar electronic equipment should service equipment NOTE Some equipment components can become extremely hot during operation Turn off all power to the equipment and wait un...

Page 3: ...be seller or if appropriate to specifi cations accepted by Seller in writing during the period shown Motorola at its option will either repair or replace the product or refund the purchase price thereof and such action on the part of Motorola shall be the full extent of Motorola s liability hereunder This warranty is void if a the product is used in other than its normal and customary manner b the...

Page 4: ...rials include any material that contains copper primarily consist of circuit boards exclude cables separate Material category Beryllium Oxide has been used in the power amplifier Beryllium Oxide should not be sub jected to any process which will generate dust Features Over 92 of the station is made of aluminum one of the most recycled materials commonly available today In addition the aluminum use...

Page 5: ...tries or regions collection systems have been set up to handle waste of electrical and electronic equipment In European Union countries please contact your local equipment supplier representative or service center for information about the waste collection system in your country Disposal Guideline The following symbol on a Motorola product indicates that the product should not be disposed of with ...

Page 6: ...l Safety Information xxxi Performance Specifications xxxii Glossary xxxiv DESCRIPTION 68P81096E36 Introduction 1 Flexible Mechanical Design 1 Electrical Design 2 Trunking Capability 2 Summary of Operating Features 3 Station Components 4 DESCRIPTION MTR2000 Base Station Repeater and Receiver For Analog Conventional and Trunking Systems 132 174 MHz MOTOROLA MTR2000 Spectra TAC DIGITAC Private Line D...

Page 7: ... Lightning Protection 10 Recommended Tools and Equipment 11 Equipment Unpacking and Inspection 11 Cabinet Unpacking 11 Mechanical Installation 12 Unpacking Equipment 12 Mounting Procedures 16 Board Configuration 22 4 wire Wireline Interface Board 22 4 wire Euro Wireline Interface Board 22 Auxiliary I O Board 24 Electrical Connections 27 Power Supply Connections 28 RF Antenna Connections 31 System ...

Page 8: ...nnections 4 ROUTINE MAINTENANCE 68P81096E39 Introduction 1 Recommended Test Equipment 2 Calibrating Station Reference Oscillator 2 TROUBLESHOOTING 68P81096E17 Introduction 1 Recommended Test Equipment 2 Troubleshooting Procedures 3 Module Replacement Procedures 20 Preselector Field Tuning Procedures 34 OPERATION MAINTENANCE AND TROUBLESHOOTING ...

Page 9: ...Description 1 Input and Output Connections 2 Functional Theory of Operation 3 30 40 W POWER AMPLIFIER MODULE Models CLN1227 and CLN1226 68P81096E26 Description 1 Identification of Inputs Outputs 2 Functional Theory of Operation 3 100 W POWER AMPLIFIER MODULE Models CLN1224 and CLN1225 68P81096E24 Description 1 Identification of Inputs Outputs 2 Functional Theory of Operation 3 STATION MODULES RECE...

Page 10: ...ctional Theory of Operation 3 4 WIRE WIRELINE INTERFACE BOARD Model CLN1203 68P81096E29 Description 1 Inputs and Output Connections 2 Functional Theory of Operation 3 8 WIRE WIRELINE INTERFACE BOARD Model CLN1205 68P81096E31 Description 1 Inputs and Output Connections 2 Functional Theory of Operation 3 AUXILIARY I O BOARD Model CLN1206 68P81096E53 Description 1 Input and Output Connections 2 Funct...

Page 11: ...500 W POWER SUPPLY AC with DC Backup Connector Model DLN6622 68P81011Y31 Description 1 Performance Specifications 2 Identification of Inputs Outputs 3 Functional Theory of Operation 4 250 W POWER SUPPLY AC with DC Backup Connector Model CLN1221 68P81096E34 Description 1 Performance Specifications 2 Identification of Inputs Outputs 3 Functional Theory of Operation 4 250 W POWER SUPPLY AC with DC Ba...

Page 12: ...ions 2 Identification of Inputs Outputs 3 Functional Theory of Operation 4 250 W POWER SUPPLY DC Only Model CLN1223 68P81096E52 Description 1 Performance Specifications 2 Identification of Inputs Outputs 3 Functional Theory of Operation 4 SATELLLITE RECEIVER 68P81096E44 Description 1 Input and Output Connections 3 SATELLITE RECEIVER ...

Page 13: ...ons Complement 4 Mounting Location 4 VHF EXTERNAL DOUBLE CIRCULATOR MODULE Models CLN1207 CLN1208 and CLN1209 68P81096E49 Description 1 Inputs and Output Connections 2 Options Complement 6 Performance Specifications 7 Functional Theory of Operation 8 VHF DUPLEXER MODULE Models TYD4031 TYD4032 and TYD4033 68P81085E16 Description 1 Adjustment Screws and Input Output Connectors 2 Performance Specific...

Page 14: ...e Station 13 Figure 4 Unpacking Procedures Floormount Cabinets 15 Figure 5 Slide Rail Installation Option X968AA 19 Figure 6 Slide Rail Installation Option X346AB 21 Figure 7 CLN1203 Wireline Interface Board Jumper Settings 22 Figure 8 CLN1204 Wireline Interface Board Jumper Settings 23 Figure 9 CLN1206 Auxiliary I O Board Jumpers 24 Figure 10 Location of External Connectors at Rear of Station 28 ...

Page 15: ... Troubleshooting 7 Figure 3 Front Panel Removal 8 Figure 4 SCM Service Connectors 9 Figure 5 Service Mic Buttons 11 Figure 6 Test Equipment Setup for Verifying Transmitter Circuitry 14 Figure 7 Test Equipment Setup for Verifying Receiver Circuit 18 Figure 8 Test Equipment Setup for External Preselector Field Tuning 37 Figure 9 Location of Tuning Screws and Cavity Probe Holes 39 Figure 10 Location ...

Page 16: ... Module Input Outputs 2 Figure 2 VHF 30 40 W Power Amplifier Module Functional Block Diagram 5 100 W POWER AMPLIFIER MODULE Models CLN1224 and CLN1225 68P81096E24 Figure 1 VHF 100 W Power Amplifier Module Input Outputs 2 Figure 2 VHF 100 W Power Amplifier Module Functional Block Diagram 5 STATION CONTROL MODULE Model CLN1465 68P81096E32 Figure 1 Station Control Module Indicators and Input Output C...

Page 17: ...nd Input Output Connections 2 Figure 2 CLN1203 Wireline Interface Board Jumpers Settings 4 Figure 3 CLN1203 2 Wire Voice Audio Path Functional Block Diagram 7 Figure 4 CLN1203 4 Wire Voice Audio Path Functional Block Diagram 7 8 WIRE WIRELINE INTERFACE BOARD Model CLN1205 68P81096E31 Figure 1 CLN1205 Wireline Interface Board Jumpers and Input Output Connections 2 Figure 2 CLN1205 8 Wire Voice Audi...

Page 18: ...2 Power Supply Module Input Output Connections 3 Figure 2 Model DLN6622 500 W Power Supply Functional Block Diagram 7 250 WPOWER SUPPLY AC with DC Backup Connector Model CLN1221 68P81096E34 Figure 1 Model CLN1221 Power Supply Module Input Output Connections 3 Figure 2 Model CLN1221 250 W Power Supply Functional Block Diagram 5 250 W POWER SUPPLY AC with DC Backup Connector Model DLN6624 68P81011Y2...

Page 19: ... Connections 3 Figure 2 Model CLN1223 DC Only 250 W Power Supply Functional Block Diagram 5 SATELLLITE RECEIVER 68P81096E44 Figure 1 Typical MTR2000 Satellite Receiver 1 Figure 2 Satellite Receiver Input Output Connections 3 Figure 3 Satellite Receiver Connections Within a Voting System 4 Figure 4 Satellite Receiver Functional Block Diagram 5 SATELLITE RECEIVER ...

Page 20: ...rconnect Diagram for Antenna Relay Module 9 VHF EXTERNAL PRESELECTOR MODULE Models CLN1216 and CLN1217 68P81096E43 Figure 1 External Preselector Input Output Connectors and Tuning Screws Cavities 2 Figure 2 External Preselector Only Cable Kit 3 Figure 3 Mounting Position for External Preselector 4 VHF EXTERNAL DOUBLE CIRCULATOR MODULE Models CLN1207 CLN1208 and CLN1209 68P81096E49 Figure 1 VHF Dou...

Page 21: ...plexer and External Double Circulator Cable Kits 4 Figure 5 Duplexer and External Preselector Cable Kits 5 Figure 6 Duplexer External Preselector and External Double Circulator Cable Kits 6 Figure 7 Typical Duplexer Interconnect Diagram 8 Figure 8 Preliminary Tasks Prior to Tuning Duplexer 11 Figure 9 VHF Duplexer Field Tuning Procedure 13 ZETRON REPEATER PANEL Model TDN9946 68P81095E71 Figure 1 Z...

Page 22: ...ary Inputs Outputs at the System Connector 34 Table 6 J5 System Connector Row A Pins 35 Table 7 J5 System Connector Row B Pins 36 Table 8 J5 System Connector Row C Pins 37 Table 9 Type 5 and 3002 Phone Line Specifications 39 Table 10 Wireline Connector Line Pair Assignments 40 Table 11 System Types vs Wireline Circuit Matrix 41 Table 12 Station Maintenance Connections on the SCM 42 ROUTINE MAINTEN...

Page 23: ...ut Circuitry Signals 5 Table 3 Option Interrupt Request Signal 5 Table 4 SPI Bus Output Circuitry Signals 7 Table 5 General Purpose Output Electrical Characteristics 8 Table 6 Configuring Input GPI_14 Function 10 Table 7 Configuring Output GPO_14 Function 10 Table 8 Configuring Output GPO_15 Function 10 STATION MODULES AUXILIARY I O CIRCUITRY ...

Page 24: ...pecifications 3 500 W POWER SUPPLY AC with DC Backup Connector Models DLN6622 68P81011Y31 Table 1 DLN6622 Power Supply Module Performance Specifications 2 250 W POWER SUPPLY AC with DC Backup Connector Model CLN1221 68P81096E34 Table 1 CLN1221 Power Supply Module Performance Specifications 2 250 W POWER SUPPLY AC with DC Backup Connector Model DLN6624 68P81011Y29 Table 1 DLN6624 Power Supply Modul...

Page 25: ...6 and CLN1217 68P81096E43 Table 1 VHF External Preselector Option Complement 4 VHF EXTERNAL DOUBLE CIRCULATOR MODULE Models CLN1207 CLN1208 and CLN1209 68P81096E49 Table 1 VHF External Double Circulator Options Complement 6 Table 2 Performance Specifications for VHF External Double Circulator 7 VHF DUPLEXER MODULE Models TYD4031 TYD4032 and TYD4033 68P81085E16 Table 1 Performance Specifications fo...

Page 26: ...odel numbers are Option numbers are used to determine the configuration of an MTR2000 station The suffixes of these option numbers i e the last 2 characters may change The sales model includes the following items which are common to all stations Station Control Module Backplane Interconnect Board Backplane hardware Station chassis hardware Front panel Cables For Receivers the sales model determine...

Page 27: ...r the frequency option is now selected The frequency option is determined based on the frequency specified by the customer The following table shows the available frequency options The frequency option determines which Receiver module based on frequency band is included in the station Option X333AE A System Software Option must be selected for Base Stations Repeaters and Receivers as follows If th...

Page 28: ...on X30AM 250W DC Power Supply DC Power Input Cable Mounting Racks X741AF THN6752A CLN6679A X742AF THN6753A CLN6679A X743AF THN6754A CLN6679A 76 2cm 30 in Modular Rack Modular Rack 16 Rack Unit Rack Mounting Hardware 1 143m 45 in Modular Rack Modular Rack 24 Rack Unit Rack Mounting Hardware 1 32m 52in Modular Rack Modular Rack 27 Rack Unit Rack Mounting Hardware Slide Rail for rackmounted station X...

Page 29: ...2 to 146 MHz Double Circulator 132 to 146 MHz Low Pass Filter Peripheral Tray Cables Peripheral Tray Circulator Load heat sink X676AT TYD4002A TYD4010A TRN7751A TKN9133A TLN3391A External Double Circulator Module 144 to 160 MHz Double Circulator 144 to 160 MHz Low Pass Filter Peripheral Tray Cables Peripheral Tray Circulator Load heat sink X676AU TYD4003A TYD4010A TRN7751A TKN9133A TLN3391A Extern...

Page 30: ... issues call 800 448 3245 or 847 576 7300 Scope of Manual This manual is intended for use by experienced technicians familiar with similar types of equipment In keeping with the maintenance philosophy of Field Re placeable Units FRU this manual contains functional information sufficient to give service personnel an operational understanding of all FRU modules allow ing faulty FRU modules to be ide...

Page 31: ...ion also explains how to avoid the problem A WARNING symbol indicates the potential for personal injury or serious system degradation unless the proper actions are taken A WARNING also explains how to avoid the problem An IMPORTANT symbol indicates the potential for damaging the station unless the proper actions are taken An IMPORTANT note also explains how to avoid the problem This graphic symbol...

Page 32: ... 353 9152 Australia New Zealand Motorola Australia Ltd 666 Wellington Rd Victoria 3170 Melbourne Australia 61 3 566 7766 61 3 566 7910 Japan Nippon Motorola Ltd 3 20 1 Ninomi Azabu Minato Ku Tokyo 106 Japan 81 3 3440 3311 81 3 3440 3505 Europe Mideast Africa Motorola GmBH Heinrich Hertz Strasse 1 D 65232 Taunusstein 4 Germany 0049 6128 702164 0049 6128 704903 OR Local phone numbers are available f...

Page 33: ...ct provided with high power stations installed outside of the European Union EU countries and installed in EU countries prior to January 1 2001 CLN1220 Power Supply 500 W AC with DC Battery Connect provided with high power stations installed in EU countries after January 1 2001 operates in conjuction with a Power Factor Correction choke DLN6458 Power Supply 250 W DC Only CLN1223 Power Supply 500 W...

Page 34: ... marine radio when someone is within two feet 0 6 meter of the antenna DO NOT operate the transmitter of any radio unless all RF connectors are secure and any open connectors are properly terminated In addition DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere All equipment must be properly grounded according to Motorola installation instructions for safe op...

Page 35: ...0 4A Transmit 10 0 A 4 45A 2 45A Note DC voltage is 14Vdc for low power stations and 28Vdc for high power stations Current consumption values during transmit are at full rated output Temperature Range ambient 30 C 22 F to 60 C 140 F measured at station Dimensions 48 3 cm 19 x 41 3 cm 16 5 x 13 4 cm 5 25 Approximate Weight 19 kg 40 lbs Environmental Spec I P 20 Transmitter Power Output 1 to 30 W 1 ...

Page 36: ... Narrow Preselector 132 to 174 MHz Narrow Preselector Bandwidth 4 MHz Channel Spacing 12 5 kHz 20 kHz 25 kHz 30 kHz Sensitivity 12 dB SINAD 0 35 μV Selectivity 80 dB 25 kHz 30 kHz 75 dB 12 5 kHz Intermodulation 85 dB 25 kHz 30 kHz 80 dB 12 5 kHz Spurious and Image Rejection 90 dB with external Preselector 85 dB nominal with internal Preselector Off Channel Acceptance 2 kHz FM Hum and Noise 50 dB n...

Page 37: ...erminal Used to provide telephone interconnect capabil ity in a trunked station CIU Console Interface Unit Interface between operator console and station to pro vide encryption decryption functions Clear Channel modulation type in which voice information is transmitted over the channel using analog modulation Code detect Traditional term used to indicate that a 12kbps CVSD signal is being received...

Page 38: ...pplies to the Vulcan encryp tion algorithm and the Motorola product in which it is sold E EIA Electronic Industries Association E M Telephone circuit signalling lines Ear Mouth Ernie Mary EOM End Of Message 6 kHz signal transmitted at the end of a 12 kbps CVSD signal that is used by the receiving unit for fast muting of the speaker audio for squelch tail elimination ESD Electro Static Discharge ET...

Page 39: ...al Purpose Input GPO General Purpose Output HLGT High Level Guard Tone I to L IC Integrated Circuit i f intermediate frequency I O Input or Output IRB Inbound Recovery Board used with the Trunking Controller IRQ Interrupt Request ISW Inbound Signalling Word data packet transmitted on the inbound Trunking con trol channel by the subscriber unit when requesting channel allocation LLGT Low Level Guar...

Page 40: ...ssor Radio Telephone Interconnect a Motorola system that pro vides a repeater connection to the telephone network The MRTI allows the ra dio to access the telephone network when the proper access code is received MSK Minimum Shift Keying OSW Outbound Signalling Word data packet transmitted on the outbound Trunking control channel by the central controller that contains call assignment informa tion...

Page 41: ...locked loop a circuit in which an oscillator is kept in phase with a refer ence usually after passing through a frequency divider PSTN Public Switched Telephone Network PTT Push to talk the switch located on the left side of the radio which when pressed causes the radio to transmit R RA RT Remote Access Remote Transmit RAC Repeater Access Control RdStat Receiver Data Status Repeater Remote transmi...

Page 42: ...en processors and peripheral ICs Squelch Automatic receiver quieting accomplished by muting audio circuits when re ceived signal levels fall below a pre determined value SRAM Static RAM memory chip used for scratchpad memory T TCC Trunking Central Controller main control unit of the trunked dispatch system handles ISW and OSW messages to and from radios in the field See ISW and OSW TOC Turn Off Co...

Page 43: ...ge Standing Wave Ratio W to Z WCI Wildcard Input WCO Wildcard Output WFI Word Frame Interrupt used to synchronize trunking data messages in a Smart Repeater system Wide Area Wide area systems allow expanded radio coverage by using multiple receivers and or transmitters WL Wireline WL Rx Wireline Receive information from station rf receiver sent to wireline equip ment WL Tx Wireline Transmit inform...

Page 44: ... allows for superior station flexibility and simplified system upgrades All of the features described in this manual may not be currently supported Refer to the Summary of Operating Features section for a list of standard features optional features and planned future features Flexible Mechanical Design All elements of the station are designed for EIA 48 3cm 19 rack mounting allowing the equipment ...

Page 45: ...ent to the Station Control Module providing improved consistent audio quality throughout the coverage area Station Control Module The Station Control Module is microprocessor based and features extensive use of ASIC and digital signal processing technology The module serves as the main controller for the station providing signal processing and operational control for the station modules Wireline C...

Page 46: ...e of the leading optional features for the station Double Circulator Option provides additional isolation and intermodulation protection for rf congested transmitter sites not available on 350MHz stations Microprocessor Radio Telephone Interconnect MRTI allows connection of conven tional station to the telephone network Trunking allows trunking repeater to operate as part of a Smartnet or SmartZon...

Page 47: ...dule Bottom Plate Exciter Module Receiver Module Station Control Module Power Amplifier Module Front Cover NOTE Fans and fan covers are only used on high power Power Amplifier modules and Power Supplies Backplane NOTE Fans and fan covers are only used on high power Power Amplifier modules and Power Supplies Fan Cover Auxiliary I O Board Top Plate Fan Wireline Interface Board ...

Page 48: ...uency The VCO is directly modulated by transmit audio data from the SCM The resulting modulated rf signal at a level of approximately 12 dBm is then fed to the PA Power Amplifier Module Operation The PA modules are designed for continuous duty operation across all bands and power lev els The actual circuit stages employed in a PA depend on the specific frequency band power output level and intermo...

Page 49: ... serve as the feedback signal in the power control loop Under normal operating conditions the power control circuitry compares this dc voltage from the directional coupler to a reference voltage from the D A converter which represents the desired output power Based on the comparison a power control voltage is generated to control the output power from the PA Module The modulated rf signal is ampli...

Page 50: ...ugh a low pass filter varactor tuned preselector if external preselector is not used rf amplifier and image filter to the rf input of the first mixer The filtered signal is mixed with an injection signal generated by the receive synthesizer VCO resulting in a first i f intermediate frequency signal The injection signal frequency is determined by frequency programming data from the Station Control ...

Page 51: ...CM and operates from station software stored in FLASH memory This software determines the system capabilities of the station The Host µP communicates with the station modules and the SCM circuitry via address and data buses three SCI Serial Communication Interface ports and an SPI bus The DSP portion of the MC68356 with the support of the DSP ASIC perform the necessary digital processing for the s...

Page 52: ...B via copper pairs at the rear of the station Wireline Interface Board Operation The WIB contains a PCM Codec filter device to perform the audio digitization and reconstruc tion as well as the band limiting and smoothing required by PCM systems Analog signals are routed as follows Inbound analog signals are converted to digital signals and routed to the SCM as wire line transmit data WL TxD Outbou...

Page 53: ...an input signal path from auxiliary equipment to the station SCM The input circuitry supports 16 general purpose inputs 14 are transistor buffered inputs 16V maximum 10kΩ 2 are opto isolated inputs 60mA forward current 3V dropout voltage 2kV isolation The Auxiliary I O Board contains SPI Output Latches and associated circuitry which provides an output signal path from the station SCM to auxiliary ...

Page 54: ...as a Satellite Receiver ac Input Power The 250 W models generates the 5 1 V and 14 2 V operating voltages for the station mod ules The 500 W models generates the 5 1 V 14 2 V and 28 V operating voltages for the sta tion modules These modules have power factor correction and include a connection for battery backup Table 1 Power Supply Module Models Model Supplied by Input Voltage Range Output Volta...

Page 55: ...dule DLN6624 accepts a dc input 10 8 to 16 Vdc The output voltages are the input filtered voltage a regulated 5 1 Vdc For dc only operation the 500 W Power Supply Module DLN6622 accepts a dc input 21 to 32 Vdc The output voltages are the input filtered voltage a regulated 5 1 Vdc a regulated 14 2 Vdc ...

Page 56: ...Description THIS PAGE INTENTIONALLY LEFT BLANK 68P81096E36 H 13 06 28 05 ...

Page 57: ...RECEIVER SIGNAL STRENGTH INDICATOR OPTION DEPENDENT AUXILIARY TX AUDIO DISC AUDIO MICROPHONE AUDIO EXTERNAL SPEAKER 2 1 MHz REF 20 KHz CODEC BUS 24 KHz CODEC BUS 2 1 MHz REF DSP MEMORY DSP ADDRESS BUS DSP DATA BUS 24 KHz CODEC BUS DSP HOST MICROPROCESSOR SSI 68356 SPI BUS SPI BUS LINE RX LINE TX 4 WIRE VERSION SHOWN LINE 1 IN INBOUND WIRELINE AUDIO FROM LANDLINE TO STATION OUTBOUND WIRELINE AUDIO ...

Page 58: ...TENNA 75 W POWER AMPLIFIER 800 900 MHz B SPI BUS POWER CONTROL CIRCUITRY TWO CIRCULATORS 50 OHM LOAD 15 W INTERMEDIATE POWER AMP 50 W BUTTERFLY MODULE LOW PASS FILTER DIRECTIONAL COUPLER B SPI BUS POWER CONTROL CIRCUITRY CIRCULATOR 50 OHM LOAD 10 W INTERMEDIATE POWER AMP LOW PASS FILTER DIRECTIONAL COUPLER DUAL DEVICE MODULE 100 W POWER AMPLIFIER 600 MHz B SPI BUS POWER CONTROL CIRCUITRY Figure 3 ...

Page 59: ...anual R56 68P81089E50 specifically refer to the information on ground connection for lightning protection Installation Overview The following information is an overview for installing the station and ancillary equipment Step by step procedures for each of the major installation tasks are then provided beginning in Section 2 Mechanical Installation Plan the installation paying particular attention ...

Page 60: ...ed and can cause such malfunctions as overheating and intermittent electrical connections The station may be installed in any location suitable for electronic communica tions equipment provided that the environmental conditions do not exceed the equipment specifications for temperature humidity and air quality These are Operating Temperature Range 30 C 22 F to 60 C 140 F This is the temperature me...

Page 61: ...d More than one station per cabinet will result in degradation of thermal specifications at high ambient temperatures Low Power Stations In order to maintain thermal specification of 30 C 22 F to 60 C 140 F the low power stations must be mounted in a cabi net with additional cooling A single low power station mounted in a cabinet without additional cooling will operate at thermal specification per...

Page 62: ...et must be connected to an ac source capable of supplying a maximum of 1020 VA For a nominal 110 120Vac input the ac source must supply 8 5A and should be protected by a circuit breaker rated at 15A For a nominal 220 240Vac input the ac source must supply 4 25A and should be protected by a circuit break er rated at 10A Requirement for European Union EU Countries Beginning January 1 2001 input harm...

Page 63: ...Each floor mount cabinet has front and rear vented doors and has the capacity to hold a minimum of a single station see thermal limitations described under Equipment Ventilation and re quired ancillary equipment The larger cabinets provide additional room for supplementary peripheral equipment in a rack Open frame racks accept multiple stations and ancillary equip ment EIA 48 3cm 19in rack configu...

Page 64: ...nd 91 44cm 36in rear for minimum installation access Refer to Equipment Ventilation for recom mended ventilation clearances For improved access to the unit a tray slide is available option X968AA Ensure that the cabinet is securely anchored to the floor thereby avoiding possible equipment tipping and personal injury Refer to Mounting Proce dures Mounting Floor mount Cabinets for details on proper ...

Page 65: ... 55 9 cm 22 in 46 5 cm 18 3 in 45 2 cm 17 8 in 55 9 cm 22 in 46 5 cm 18 3 in FRONT Mounting Rails 4 76 2 cm 30 in 0 64 cm 0 25 in FRONT VIEW SIDE VIEW BASE MOUNTING DETAIL VIEWED FROM TOP 5 1 cm 2 in 49 cm 19 3 in 5 1 cm 2 in 9 6 cm 3 8 in 5 1 cm 2 in 9 2 cm 3 625 in holes 2 1 575 cm 0 62 in holes 4 1 524m 60 in 1 168m 46 in 49 cm 19 3 in Station Support Brackets 2 ...

Page 66: ...front and rear is 91 44cm 36in minimum for servicing access Refer to Equipment Ventilation for recommended ventilation clearances FRU kit CLN6679A MTR2000 Rack Mounting Hardware is included with each Rack Option This allows proper installation of the MTR2000 station within the rack s centre of gravity This kit includes two rack mount standoffs and eight mounting screws Rack Option Rack Height Numb...

Page 67: ...B 17 78cm 7in 3 81cm 1 5in 17 78cm 7in 7 22cm 2 85in 38 74cm 15 25in 5cm 2in 15 9mm Diam 0 625in 9 4mm Diam 0 37in 52 7cm 20 75in 45 36cm 17 86in 48 77cm 19 2in 38 74cm 15 25in 13 45cm 5 3in 5cm 2in 9 4mm Diam 0 37in Rack Center SIDE VIEW TOP BOTTOM Dimension B Dimension B Dimension B Dimension A 10 97cm 4 375in 13 21cm 5 25in 0784384T03 13 21cm 5 25in Standoff ...

Page 68: ... of rf grounding is the use of shielding to prevent or at least minimize the leakage of unwanted rf transmissions from communications equipment and cables Lightning Ground Providing adequate lightning protection is critical to a safe and reliable communi cations site Telephone lines rf transmission cables and ac and dc power lines must all be protected to prevent lightning energy from entering the...

Page 69: ...he cabinet bolted to a wooden skid and covered with a cardboard box with corrugated interior corner braces Stations to be used in open frame racks are shipped with the station and an cillary equipment mounted in the rack and covered by an antistatic plastic bag All rack shipments are electronic van only Thoroughly inspect the equipment as soon as possible after delivery If any part of the equipmen...

Page 70: ...ansportation company and to Motorola Unpacking Stations The station is shipped in a carton cushioned by four plastic inserts at the corners of the carton Improper handling of the station may cause personal injury or damage to the station DO NOT pick up the station by holding the Preselector if so equipped Use the handles on the front of the station or the Power Supply and Power Amplifier casings w...

Page 71: ...5 Unpacking Floor mount Cabinets The floor mount cabinets are shipped mounted to a wooden skid secured with corrugated corner braces held by a plastic strap and covered with a cardboard cov er Unpack the equipment as described in Figure 3 ...

Page 72: ...uring installation 5 Depending on cabinet type either open or remove front and rear doors to gain access to the four 4 bolts securing the station to the wooden skid Remove the bolts and nuts as shown 6 Use hoist to lift the station from the skid Remove skid and return station to floor 7 Replace antistatic bag over station to provide protection during installation Cardboard Cover Corrugated Corner ...

Page 73: ...e the rack aside drill holes in the concrete floor and install the mount ing anchors RAM RD 56 anchors recommended per instructions provided with the anchors Make sure that none of the anchors comes in contact with the reinforcing wire mesh buried in the concrete the rack must be electrical ly isolated from any other equipment or materials at the site 4 Align the rack with the installed anchors an...

Page 74: ...to the floor Transferring Equipment from Shipping Container to Rack or Cabinet As mentioned under Equipment Unpacking and Inspection a station can be shipped in a box Upon delivery the equipment must be removed from the con tainer and transferred to a Motorola supplied rack or cabinet or to a customer sup plied rack or cabinet Customer supplied cabinets and racks must have mounting rails and hole ...

Page 75: ...ing 4 Attach each Outer Slide Rail to a Cabinet Bracket with supplied screws The left and right Cabinet Brackets are identical The Locking Tab of each Outer Slide Rail must face towards the rear of the cabinet Working in the cabinet 5 The cabinet must have a set of vertical cabinet rails in the back as well as the front If there is no set in the back these must be installed The back rail is instal...

Page 76: ...s countersunk 2 Inner Slide Rail Mounting Screws panhead 2 station side Inner Slide Rail Outer Slide Rail Cabinet Bracket Cabinet Rail front Note The left side slide rail assembly is shown as viewed from the front of the cabinet The left side is a mirror image of the right side Slide Locking Latch Cabinet Rail rear Direction That Station Slides Out LEFT Note Middle Slide Rail not shown for clarity...

Page 77: ...ill tightened when the brackets are mounted in the cabinet step 7 The left and right Cabinet Bracket sets are identical The Locking Tab of each Outer Slide Rail must face towards the rear of the cabinet Working in the cabinet 5 Install a cage nut in line with clearance hole in Threaded Strip prior to fitting the Front Bracket to the front cabinet rail This nut is required for mounting the station ...

Page 78: ...e cabinet The left side is a mirror image of the right side Direction That Station Slides Out Station Mounting Screws 2 Mount Outer Slide Rails to Brackets ONLY use lower slot of Brackets Long Bracket Short Bracket Install a cage nut in line with clearance hole in Threaded Strip prior to fitting bracket to the front cabinet rail This nut is required for mounting the station The cage nuts are provi...

Page 79: ...ws the jumper locations for tone control 4 Wire Euro Wireline Interface Board Figure 7 shows the correct settings of impedance matching jumpers for the model CLN1204 WIB as determined by the country in which the station is being oper ated Incorrect jumper settings may violate local telecommunications authority regulations and place the equipment in an unapproved status Some countries also specify ...

Page 80: ...72ηF 150Ω 600Ω 500Ω 330ηF 400Ω 620Ω 310ηF 370Ω 820Ω 115ηF 220Ω 820Ω 115ηF 220Ω 820Ω 115ηF 220Ω 900Ω 30ηF Figure 7 CLN1204 Wireline Interface Board Jumper Settings C74 T1 T2 C15 C84 P3 E D C B A P7 P1 P9 P5 P8 E D C B A E D C B A E D C B A Jumper In A Pin 1 connects to Pin 2 This setting represents a standard 600 ohm matching and is the factory default B Pin 3 connects to Pin 4 C Pin 5 connects to ...

Page 81: ... can be jumpered to be a transistor input or opto isolated In addition it can be dedicated to the Ext_PTT Line routed to the SCM This function is a fast external PTT an active low function The board jumper settings for P2 P9 P6 are provided in Table 1 Settings for P5 are provided in Table 2 Settings for P3 P4 are provided in Table 3 P7 and P8 are not used Figure 8 CLN1206 Auxiliary I O Board Jumpe...

Page 82: ...must be jumpered to the SPI Buffer The Buffer Input should never be left floating otherwise the IRQ Generator will not function prop erly i e use either P2 1 2 or P9 7 8 Function on GPI_14 Input Type System Connector Input Pins Auxiliary I O Board Jumpers P2 P9 P6 See Note 1 Fast External PTT via Optocoupler E M sub See Note 2 A29 Opto A26 Opto 3 4 1 2 In via Transistor B26 9 10 7 8 In Fast Extern...

Page 83: ...uration is only available when the board is plugged into Option slot 1 Function on GPO_15 Output Type System Connector J5 Output Pins Auxiliary I O Board Jumpers P3 P4 Fast Carrier Detect via Relay Closure C3 B3 2 4 2 4 via Open Collector B21 see Note 4 3 4 2 4 RdStat via Relay Closure see Note 3 C3 B3 2 4 1 3 via Open Collector B21 see Note 4 3 4 1 3 SPI Latch for GPO_15 soft ware defined via Rel...

Page 84: ...ons associated with maintenance and troubleshooting of the station These connectors are located on the front of the Station Control Module see Station Operation section for position of these connectors 4 ELECTRICAL CONNECTIONS STOP IMPORTANT When installing option boards ensure that an Electro Static Discharge ESD cable is connected via banana plug to the hole in the front right handle of the stat...

Page 85: ...al connectors located at the rear of the station Figure 9 Location of External Connectors at Rear of Station Battery Backup and DC Input Connector Rx RF Connector Tx RF Connector Wireline Connector System Connector Trunking MRTI Connector AC Power Connector Not used in DC mode Ground Screw ...

Page 86: ...e ac line cord connector Insert the plug into an appropriate grounded outlet The North American line cord is equipped with a NEMA 5 15 plug intended for 110 120Vac operation The optional European line cord Option X189AA is equipped with a Schuko style CEE VII 7 plug intended for 220 240VAC operation Plugs for other countries are available as the following options If an alternate line cord is requi...

Page 87: ...interface offers the capability of connecting to battery backup power in the event of an AC power line failure The battery backup system is connected to the station through the red and black connector mounted at the rear of the station The connector has a cover with the following label This label directs the technician to read the information provided below This battery backup system must have at ...

Page 88: ...ing Connections to Storage Battery DC input Connector located at rear of the station for hooking up the Battery backup system Required input power Voltage 14 2 Vdc Low Power LP 28 4 Vdc High Power HP Current 11 5 Amps LP 13 0 Amps HP Both positive and negative terminals must be protected with appropriate fast acting fuses Secondary circuitry must be SELV type and be installed nearby preferable in ...

Page 89: ...nectors Coax cables from the receive and transmit antennas must be con nected to the two N type connectors The position of these connectors is shown in Figure 9 In the case where an optional Antenna Relay is used on the station the coax cable from the single transmit receive antenna is connected to the middle N type con nector of the Antenna Relay ...

Page 90: ... 3083765X06 30 48m 100ft Trunk Cable part 3083765X07 The following cable is available for MRTI applications Interface cable for Zetron model 30 kit TTO4097 System Connector The cable connected to the System connector can be configured for various system options A generic System cable is available for variety of applications such as Wild Card Main Standby and Auxiliary Input Output generic System c...

Page 91: ... 5 1 0 25 volts dc output A20 B20 C20 Total current through all of these pins should not exceed 500 mA GND Ground A19 B19 C19 A27 B27 C27 A31 B31 C31 Total current through all of these pins should not exceed 1 5 Amp Aux Tx Audio Tx modulation input from external source A17 RSS programmable sensitivity For R03 01 host software and earlier the fixed sensitivity is 172 mVrms for 60 system deviation R...

Page 92: ...orted this pin should not be used Aux I O Indicates that the Aux I O board must be present for this functionality WCI Wild Card Input WCO Wild Card Output The RSS Online Help provides the most current information on the System Con nector pin assignments Table 5 Summary of Auxiliary Inputs Outputs at the System Connector Auxiliary I O GPI_ System Connector J5 Pin Auxiliary I O GPO System Connector ...

Page 93: ... J1 C18 J2 C18 J3 C19 15 Spare 310 16 Spare 308 17 Aux TX Audio I J1 C16 J2 C16 J3 C16 RSS programmable input sensitivity 18 Cntrl 14 2 VDC O P8 pins 3 4 thru F2 14 2Vdc Note 1 19 GND Station ground 20 5 VDC O P8 pins 7 8 5 1 0 25 Vdc 21 Not Supported O J3 C12 22 GP1_7 WCI I J1 C11 J2 C11 Pulled up transistor input 16V max 23 Spare 323 24 Spare 320 25 Spare 903 26 Ext PTT or GP1_14 Note 2 I J1 C7 ...

Page 94: ...I O J1 B22 J2 B22 Caution See Auxiliary I O section for jumpering information 12 GPI_11 WCI or GPO_5 NS I O J1 B23 J2 B23 13 Spare 301 N C 14 Not Supported I J1 B19 J2 B19 J3 B19 TTL input 15 GND Station ground 16 Spare 300 17 Spare 321 18 Cntrl 14 2 VDC O P8 pins 3 4 thru F2 14 2Vdc Note 1 19 GND Station ground 20 5 VDC O P8 pins 7 8 5 1 0 25 Vdc 21 RdStat or GPO_15 Note 4 O J1 B12 OCO 100mA 40V ...

Page 95: ...Vdc for 120dBm to 3 5 Vdc for 40 dBm carrier Variation with carrier level approximately 40mV dBm 12 GPI_10 WCI or GPO_4 NS I O J1 A24 J2 A24 Caution See Auxiliary I O section for jumpering information 13 Spare 304 14 Not Supported O J1 A19 J2 A19 J3 A19 15 GND Station ground 16 GND Station ground 17 Disc RX Audio O J1 A16 J2 A16 J3 A16 Discriminator audio flat response 80mV to 400mV for 60 deviati...

Page 96: ...t be connected between the station and the remote equipment The phone lines may carry analog voice or encoded voice Also carried on the phone lines are Tone Remote Control type of remote control signalling The following information defines the specifications for the phone lines the location on the station backplane for phone line connec tions and which of the four 4 wireline circuits to use for va...

Page 97: ... line types Table 9 Type 5 and 3002 Phone Line Specifications Parameter Type 5 Specification 3002 Specification Loss Deviation 4 0dB 4 0dB C Notched Noise 51dBmCO 51dBmCO Attenuation Distortion 504 to 2504 Hz 404 to 2804 Hz 304 to 3004 Hz 2 0 to 8 0dB 2 0 to 10 0dB 3 0 to 12 0dB 2 0 to 8 0dB 2 0 to 10 0dB 3 0 to 12 0dB Signal To C Notched Noise Ratio 24dB 24dB Envelope Delay Distortion 804 to 2604...

Page 98: ... tool part number 6600809D00 Before applying excessive pullout force on the telephone connection wires be sure to release wires properly System Connector When 8 wire 4 line telephone connections are required Line 1 and Line 2 are provided through the 4 terminal Telephone connector Line 3 and Line 4 are provided through the System connector The location of the Telephone and System connectors on the...

Page 99: ...dio with respect to consoles comparators CIT and DVM mo dems are outputs Transmit audio with respect to stations is an input iv Receive audio with respect to consoles comparators CIT and DVM mo dems are inputs Receive audio with respect to stations is an output Note Table 11 System Types vs Wireline Circuit Matrix System Type Line 1 Note i Line 2 Note i Line 3 Line 4 Conventional Local Area Analog...

Page 100: ...imum level should not exceed 3Vpp Service Speaker P5601 Output to Power Voice speaker Adjustable between 0 to 500mV across 1Kohm 60 system deviation Audio signal appears between pins 3 and 4 on the connector Must use speaker type HSN1000 via adapter cable Part No 0185180U01 RSS P5600 Serial Port For connection to serial port of a computer via cable Part No 3082056X02 The Radio Service Software RSS...

Page 101: ...ac outlet that is supplying power to the station Power Supply Module or switch on the DC supply to a station with a DC only Power Supply Module Changing Fuse To replace the station fuse 1 Turn off station power at source e g ac breaker 2 Remove fuse cover plate located on the backplane shield by unscrewing one M4 screw 3 Pull defective fuse carefully with small needle nose pliers 4 Replace new fus...

Page 102: ...t at the same time 2 All go off for about 15 seconds 3 All stay off except for the Station Status LED which goes red for about 6 seconds 4 Now indicate operational status of the station The 4 LEDs indicate PA Keyed LED green station PA is keyed FailSoft LED yellow if set up for trunking station is not being con trolled from the trunking central controller Rx Active LED green station is unsquelched...

Page 103: ...wireline loopback failure invalid local channel selection Boot mode is the mode the station is in during the loading of software into the sta tion s Flash memory Service mode is the mode the station is in during normal maintenance and service periods These modes include the following conditions Intercom PL Disable Access Disable Failsoft Disable Power Control Disable Service PTT The Radio Service ...

Page 104: ...on of the station radio can be verified by exercising the radio s two way operation This may be carried out when an external speaker and microphone are connected to the Station Control Module SCM The kit for the speaker is HSN1000 The external speaker requires an adaptor cable part 0185180U01 Using a speaker other than the recommended HSN1000 may result in the sta tion blowing a fuse The kit numbe...

Page 105: ...g the station codeplug from the station this ensures a match between the station serial number resident in the codeplug and the serial number part of the customized station codeplug data that is written back to the sta tion see task 5 2 Customizing the station codeplug and saving the data to the station 3 Aligning the station for Rx Wireline Tx Wireline Receiver RSSI calibration option Receiver Sq...

Page 106: ...ith an External Double Circulator option this circulator is provided in a peripheral tray In the case where an option is later added to the station it can be installed according to the information provided in the An cillary Equipment sections of the appropriate Instruction manual Also refer to the Troubleshooting section for information on tuning the External Preselector 7 INSTALLING STATION HARDW...

Page 107: ...s and connectors provided on the station The set of LEDs indicate the operational status of the station There are two sets of connectors for devices external to the station One set connects to external devices to enable full operation of the station These are located at the back of the station Another set connects to external devices for servicing the station These are located on the Station Contr...

Page 108: ...Post Installation Checklist Verifying Proper Operation Red Green Station Status LED Yellow FailSoft LED Green Rx Active LED Figure 1 Front Panel LEDs Green PA Keyed LED FS Function Color Indicates Station Status red green operational status of station Rx Active green that the station Rx activation criteria are satisfied This could be RF carrier only PL DPL only or RF carrier plus PL DPL FailSoft y...

Page 109: ...lectrical Connections for the position of the station external connectors and line cord located on the back panel A BNC connector on the front of the SCM allows the station to be connected to a 5 MHz or 10 MHz external reference signal Figure 2 shows the position of the BNC connector on the SCM ...

Page 110: ...odule and an external speaker amplifier with a 6 pin molex connector via an adaptor cable part number 0185180U01 RSS connects between the telephone connector on the Station Control Module and the DB9 connector on a PC A DB25 connector can also be used to con nect to the PC when used with a DB25 DB9 adaptor Service Microphone connects between the telephone connector on the Station Control Module an...

Page 111: ...uipment have been designed with state of the art tech nology and operate under software control thus requiring minimal routine main tenance Virtually all station operating parameters are monitored and self corrected by the Station Control Module making virtually all periodic adjust ments and tuning unnecessary Providing that the equipment is installed in an area which meets the specified en vironm...

Page 112: ...After the first year the devices remain stable for a substantially longer period of time Therefore it is recom mended that the station reference oscillator internal be calibrated after one year of operation and thereafter less often Table 1 provides a recommended schedule of periodic calibration Station Reference Calibration Schedule After performing the initial one year calibration procedure peri...

Page 113: ...ency typically an R2001 with external frequency standard 2 Remove station front panel by inserting a small flat blade screwdriver into one of two access holes at either end of the panel and by carefully moving the handle of the screwdriver away from the center release the front panel locking clip from the chassis and pull away the panel refer to Figure 1 Some station components can become extremel...

Page 114: ...t Procedure Standard SCM Only Perform the following procedure to calibrate the station reference oscillator using a 5 10 MHz external reference signal The accuracy of this procedure depends on the accuracy of the 5 10 MHz external reference signal Be sure the 5 10 MHz external reference signal provides the nec essary accuracy as described in Table 1 1 Connect the output of a stable 5 10 MHz refere...

Page 115: ...uipment Troubleshooting Overview The troubleshooting procedures and supporting diagrams provided in this section allow the service technician to isolate station faults to the Field Replaceable Unit FRU level Defective FRUs are then replaced with known good ones to restore the station to proper operation Troubleshooting information includes Troubleshooting flow charts Interpreting front panel LED i...

Page 116: ...ent Motorola R2001 or R2600 Communications Analyzer PC running Microsoft Windows 3 1 or Windows 95 and Radio Service Software RSS RSS cable part 3082056X02 In Line Wattmeter Motorola S 1350 or equivalent Dummy Load 50 Ω station wattage or higher Microphone with PTT switch GMN6147B or equivalent Service speaker HSN1000 Service Speaker adaptor cable part 0185180U01 2 RECOMMENDED TEST EQUIPMENT ...

Page 117: ...omponent level Because the station is computer controlled and employs state of the art digital signal processing techniques many of the troubleshooting procedures require the use of the Radio Service Software RSS application The RSS is run on a PC or compatible with Microsoft Windows 3 1 or Windows 95 and RS 232 communication port ca pabilities The RSS allows the technician to run diagnostics and ...

Page 118: ...low the technician to troubleshoot reported or suspected equipment malfunctions An over view of the procedure is shown in the flow chart of Figure 2 Some station components can become extremely hot during station op eration Turn off all power to the station and wait until sufficiently cool before touching the station How to Use These Troubleshooting Procedures Perform the following basic steps in ...

Page 119: ...rating normally See Section 4 Replace Power Supply Module See Section 4 SeeFigure 2 See RSS Channel Info window Figure 1 Procedure 1 Routine Site Visit Sheet 1 of 2 Through RSS Check Error Log Act on error messages Run Diagnostics if more detail needed YES Is Station Status LED flashing green YES Is Station Status LED alternatelyflashing red green Through RSS Check Error Log Act on error messages ...

Page 120: ...rough RSS or with service microphone YES NO Transmitter is operating at reduced power Is Station PA Keyed LED flashing YES Station PA Keyed LED on Transmitter is operating properly See Figure 2 NO Is Station Status red LED flashing YES Station is being powered by battery backup Is Station Status red LED flashing YES Normal operation when DC Power Supply is selected through RSS See Figure 2 NO Repl...

Page 121: ...ee Section 4 NO Run Station Diagnostics through RSS while in transmit mode Failure occurred for Exciter YES See Section 4 NO Failure occurred for PA YES See Section 4 An equipment problem is reported or suspected Run Station Diagnostics through RSS while in receive mode Failure occurred for SCM Replace Station Control Module See Section 4 NO Failure occurred for DC supply to module Check module co...

Page 122: ...ion of service aids mic speaker etc or removal of any of the sta tion modules or option cards necessitates first removing the front panel Removal Procedure Remove station front panel by inserting a small flat blade screwdriver into one of two access holes at either end of the panel and by carefully moving the handle of the screwdriver away from the center release the front panel locking clip from ...

Page 123: ... of the SCM to form the control cluster Service connectors are provided on the front of the SCM including connectors for RS 232 port P5600 8 contact modular jack provides connection to Serial Communica tions port on a PC running Radio Service Software RSS external speaker amplifier P5601 4 contact modular jack microphone P5602 8 contact modular jack and 5 10 MHz external reference input J5603 BNC ...

Page 124: ... station audio monitor modes press this button The selectable modes are Off no carrier squelch and no PL DPL Listen to the channel with the station unsquelched and PL DPL dis abled that is hear everything on the channel CSQ carrier squelch and no PL DPL If the station is already unsquelched as determined by station code plug value then no change is heard when the CSQ mode is selected This mode ena...

Page 125: ... key and dekey the sta tion by pressing the PTT Intercom button To key the station trans mitter press this button To dekey the station transmitter release this button OR When Intercom mode is selected i e on press the PTT Intercom button to talk over the wireline connection the transmitter is not keyed Figure 5 Service Mic Buttons PTT Intercom Button Speaker Volume Control Button Monitor Button In...

Page 126: ...unction etc This procedure allows the service technician to make minor adjustments and verify proper operation of the station transmit circuitry including Exciter Module Power Amplifier Module Power Supply Module Transmitter related circuitry in the SCM Wireline Board In general the transmitter circuitry is exercised by injecting and measur ing signals using a Motorola R2001 or R2600 Communication...

Page 127: ...ty Backplane Faulty Antenna Relay 3 Measure output power by pressing the PTT button and observing reading on in line wattmeter If PA output not at proper power as set for particular site adjust the output power as described in the RSS online help 4 If PA output power OK set up R2001 or R2600 for spectrum analyzer display Press the PTT button and observe the display The display should show a single...

Page 128: ... load 4 Connect the transmitter antenna to the R2001 antenna input Be sure to pull the RF PORT SELECT knob out and select antenna rf input Dummy Load Inline Wattmeter Station Receive Input Station Transmit Output Motorola R2001 Communications Analyzer Antenna RF port select knob pull out To Receive Antenna Station rear Station front Service MIcrophone 5 Remove front panel from station and connect ...

Page 129: ...edure If all displays and measurements are correct the transmitter circuitry may be considered to be operating properly Remove test equipment restore the station to normal service and return to the troubleshoot ing flow chart to resume troubleshooting sequence Station Reset In the event that the station repeatedly resets 1 Disconnect dc power to PA and connect a load to the PA Module 2 Power on th...

Page 130: ...s not at hand or for some reason cannot be utilized PC malfunction etc This procedure allows the service technician to make minor adjustments and verify proper operation of the station receive circuitry including Receiver Module Power Supply Module Station Control Module In general the receiver circuitry is exercised by injecting and measuring signals using a Motorola R2001 or R2600 Communications...

Page 131: ...or Faulty R2001 or R2600 to station RF cable Faulty Antenna Relay 4 If audio is heard connect the external speaker RJ 45 jack to the Oscil loscope input BNC connector as shown in step 4 of Figure 7 5 Using the RSS or Servie mic increase the audio volume to maximum Measure the audio level using the R2001 or R2600 Audio level should measure approximately 0 75 to 1 5 Vpp If not suspect faulty SCM 6 C...

Page 132: ...or on station 2 Connect an N to N type cable between the station receive input and RF In Out connector on R2001 3 Connect service speaker to speaker connector on Station Control Module Motorola R2001 Communications Analyzer RF In Out To Receive Antenna Station rear Station front Service Speaker External Speaker Connector on SCM Station Receive Input ...

Page 133: ...ying Receiver Circuit Continued Motorola R2001 Communications Analyzer Oscilloscope Input Station front External Speaker Connector on SCM Station Receive Input Station rear 4 If audio is heard connect the external speaker RJ 45 jack to the Oscilloscope input BNC connector RF In Out ...

Page 134: ...he equipment you must take precautionary steps to prevent damage to the modules from static discharge Complete infor mation on prevention of static protection is provided in Motorola publica tion 68P81106E84 available through Motorola Americas Parts Division APD or a local support Motorola facility see the list of Motorola facilities in the front matter of this manual under Service and Replacement...

Page 135: ... abrasive cleaning typically employed for cleaning non gold plated con tacts can result in the removal of the gold plating or bending of the con nector contacts If cleaning of the gold plated contacts is required use a soft cloth damp ened with alcohol to lightly wipe the contacts Be sure not to touch the contact surfaces with your fingers as finger oils and salts can contaminate the contact surfa...

Page 136: ...he procedure is 1 Turn off station power by turning off breaker at ac source 2 Remove screws 4 securing fan to PA or Power Supply casting 3 Unplug fan electrical power connector 4 Lift the fan away from the casting the electrical power connector will detach when the fan is lifted 5 Ensure that the correct fan is being installed 6 Position the fan on the casting 7 Push the power connector into the ...

Page 137: ...10 conductor ribbon cable which connects to J03 PA Power Cable 6 conductor cable which connects to J02 4 Remove screws securing battery backup connector to PA casting 5 Remove the station from the rack cabinet or wallmount bracket if so mounted 6 Remove six screws securing top and bottom plates to PA casting and remove PA Module 7 Ensure that the correct PA Module is being installed 8 Install repl...

Page 138: ...ervice Station Alignmentt Transmitter Power Amplifier 2 Enter the PA Module Calibration number into the appropriate data field The Calibration number is printed on the label located on the front of the PA Module Post Replacement Optimization Procedure Perform the Power Output alignment procedure located in the RSS Service menu online help facility ...

Page 139: ...x screws securing top and bottom plates to Power Supply casting and remove Power Supply Module 7 Remove the station from the rack cabinet or wallmount bracket if so mounted 8 Ensure that the correct Power Supply Module is being installed 9 Install replacement Power Supply Module 1 Line up holes in the PA casting with corresponding holes in the top and bottom plates 2 Replace the screws according t...

Page 140: ...tor on SCM replacing screws 4 and sliding the cluster back into the station along the guide rails to mate with the connector on the back plane Do not slam the station control cluster against the backplane or push any harder than necessary to seat the connector 6 Install module lock screws 2 to front of station control cluster and reconnect the RF cables from the PA Module and the Receive antenna p...

Page 141: ...rd on cluster pull tabs carefully slide station control cluster out of station 4 Remove screws 4 securing Exciter Module and screws 4 securing Receiver Module to the SCM and disconnect both modules from the SCM 5 Ensure that the correct Station Control Module is being installed 6 Install replacement Station Control Module by plugging Exciter Module and Receiver Module into respective connectors on...

Page 142: ...ata to the codeplug 2 Calibrate the reference oscillator station reference by performing the procedure in the Routine Maintenance section of this manual 3 Perform the TX Deviation Gain Adjust alignment procedure located in the RSS Service menu online help facility 4 Perform the Reference Modulation alignment procedure located in the RSS Service menu online help facility ...

Page 143: ... by plugging module into con nector on SCM replacing screws and sliding the cluster back into the station along the guide rails to mate with the connector on the back plane Do not slam the station control cluster against the backplane or push any harder than necessary to seat the connector 6 Install module lock screws 2 to front of station control cluster and reconnect the RF cables from the PA Mo...

Page 144: ...iv er Module 3 Remove screws 2 securing External Preselector to back of station 4 Ensure that the correct External Preselector is being installed 5 Install replacement External Preselector by reconnecting the 2 cables and securing the External Preselector to the station with the 2 screws 6 Restore power to the station Post Replacement Optimization Procedure 1 Perform the Preselector Field Tuning P...

Page 145: ...those on the faulty board These include input output impedance matching jumpers refer to Wireline Interface Board section of this manual for more in formation 6 Install replacement Wireline Interface Board by sliding board into top option card slot and firmly seating the board Euro card connector into the mating backplane connector Do not slam the board against the backplane or push any harder tha...

Page 146: ... O Board is being installed 5 Set all jumpers on replacement board to match those on the faulty board Refer to Auxiliary I O Board section of this manual for more information 6 Install replacement Auxiliary I O Board by sliding board into mid dle or bottom option card slot and firmly seating the board Euro card connector into the mating backplane connector Do not slam the board against the backpla...

Page 147: ...lector label and discon nect corresponding RF coax cables to preselector and remove screws securing preselector to station 5 If station is equipped with an antenna relay disconnect control cable and remove screws securing relay to station 6 Remove ty wraps securing battery backup cable and Power Supply to PA cable 7 Label all cables wirelines connected to the rear of the Backplane Board and discon...

Page 148: ... internal varactor tuned preselector which must be retuned you must bypass the external preselector and retune the varactor tuned preselector first then reconnect the external preselector and retune it Also since this is a non standard configuration you can expect a slight degradation in the re ceiver sensitivity approximately 1 5 dB due to preselector insertion losses External Preselector Tuning ...

Page 149: ...ignment fre quency as follows 1 The station receive frequency is the midpoint frequency Fmid 2 If the receive frequency is in the range of 132 to 150 MHz determine the alignment frequency as follows If frequency from Step 1 is 148 MHz then alignment frequency Fmid 250 kHz Otherwise use actual frequency from Step 1 see above note 3 If the receive frequency is in the range of 150 to 174 MHz determin...

Page 150: ...34Nm 3 in lb of torque to the tuning screws in order to prevent warping the preselec tor cover and housing for frequencies 148 MHz in the 132 to 150 MHz range or frequencies 156 MHz in the 150 MHz to 174 MHz range turn clockwise until they are 3 mm 0 125 in beyond the tension nut for frequencies 148 MHz in the 132 to 150 MHz range or frequencies 156 MHz in the 150 MHz to 174 MHz range turn clockwi...

Page 151: ... for External Preselector Field Tuning Tuning Probe To Dip Peak Monitor RF Millivoltmeter or power meter Tension Nut Tuning Screw Preselector Assembly To antenna connector To Receiver Module Station Receive Input To Receive Antenna Station rear Motorola R2001 Communications Analyzer ...

Page 152: ...robe in cavity H1 and adjust tuning screw 2 for a DIP 6 Tighten tension nut on tuning screw 2 to at least 1 36Nm 12 in lb and fine tune tuning screw 2 for a DIP 7 Insert tuning probe into cavity H2 and adjust tuning screw 3 for a DIP 8 Tighten tension nut on tuning screw 3 to at least 1 36Nm 12 in lb and fine tune tuning screw 3 for a DIP 9 Insert tuning probe into cavity H3 and adjust tuning scre...

Page 153: ...ues via the RSS The alignment values 132 025 MHz 146 025 MHz 160 025 MHz and 173 975 025 MHz are stored in memory within the Station Control Module These four alignment values are the only information required to interpo late the tuning voltage of the preselector to any frequency within the 132 to 174 MHz band To retune this preselector perform the Varactor Tuned Preselector alignment procedure lo...

Page 154: ...SI Monitoring Point Trunking Stations Only Voltmeter Connect positive lead to pin C11 of J5 Connect negative lead to station ground chassis or ground screw RF In Out Station Receive Input To Receive Antenna Station rear Motorola R2001 Communications Analyzer Backplane ...

Page 155: ... down conversion of the station receiver RF signal A custom receiver IC then performs an analog to digital conversion of the received signal and outputs a differential data signal to the Station Control Module Overview of Circuitry The Receiver Module contains the following circuitry Frequency Synthesizer Circuitry consisting of a phase locked loop and VCO generates the first LO injection signal V...

Page 156: ...P81096E19 B 09 30 05 Figure 1 shows the receiver module input and output external connections 2 INPUTS AND OUTPUT CONNECTIONS Figure 1 VHF Receiver Module Inputs Outputs Receiver I O Connector To SCM Receive RF Input Connector ...

Page 157: ...e generated The width of these correction pulses is dependent on the amount of difference between the 2 1MHz reference and the VCO feedback The up down pulses from the PLL IC are fed to a charge pump which out puts a dc voltage proportional to the pulse widths This dc voltage is then low pass filtered and fed to the VCO as the CONTROL VOLTAGE If a frequency change is requested by the microprocesso...

Page 158: ...tal conversion of the sec ond i f signal The digital receive signal is then sent via differential drive circuitry to the Station Control Module The data signal contains the nec essary I and Q quadrature information AGC information and other data transfer information required by the Station Control Module to process the receive signal The recovered audio signal is in digital format throughout the s...

Page 159: ...r Circuitry The voltage regulator circuitry consists of two 5V regulators and filter ing circuitry The 5V regulators accepts a 8V input from a regulator on the backplane to generate Custom Analog 5V and Custom Digital 5V operating voltages to supply the custom Receiver IC and Synthesizer IC In addition to the voltage regulator circuitry 15V from the Station Con trol Module is filtered for the synt...

Page 160: ...VHF Receiver Module 6 68P81096E19 B 09 30 05 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 161: ...RCE FOR SYNTH CHARGE PUMP ANALOG 5V SOURCE DIGITAL 5V SOURCE 10V SOURCE 10 V FROM BACKPLANE VIA SCM 15V FROM SCM RECEIVE RF FROM RX ANTENNA OR ANTENNA RELAY RF INPUT OUTPUT CONNECTOR BRACKET REAR OF STATION BNC CONNECTORS D A CONVERTER SPI BUS CLOCK DATA TUNING VOLTAGES A D CONVERTER METERING SPI BUS CLOCK DATA VARIOUS SIGNALS FROM RECEIVER BOARD TO BE MONITORED METERING CIRCUITRY VCO FEEDBACK VCO...

Page 162: ...ated RF signal which is input to the power amplifier module for further amplifica tion and output to the transmit antenna The Exciter Module interfaces directly with the Station Control Module which provides control signals and monitoring and routes transmit audio to the exciter These Exciter Modules differ only in the range of operation as shown in the title of this section Unless otherwise noted...

Page 163: ...096E22 C 09 30 05 Figure 1 shows the exciter module input and output external connections 2 INPUT AND OUTPUT CONNECTIONS Figure 1 VHF Exciter Module Input Outputs Exciter I O Connector To SCM RF Output to Power Amplifier Module ...

Page 164: ...us Once programmed the PLL IC compares a 2 1MHz reference signal from the SCM with a divided down feedback sample of the VCO output Depending on whether the feedback signal is higher or lower in frequency than the 2 1MHz reference up down correction pulses are generated The width of these correction puls es depends on the quantitative difference between the 2 1MHz reference and the VCO feedback Th...

Page 165: ...ow for low frequency modulation RF Switch Circuitry The modulated RF signal from the VCO is fed through a buffer attenuator to an RF switch circuit Signal TX ENABLE from the SCM controls the switch The RF signal is output to a BNC connector mounted in one corner of the module just outside the module cover A short coaxial cable con nects the exciter output to the power amplifier module Data Communi...

Page 166: ...ator accepts a 8V input from a regulator on the backplane and generates a 5V operating voltage for the exciter board cir cuitry In addition to the voltage regulator circuitry 15V from the Station Con trol Module is filtered for the synthesizer charge pump Also 10V from a regulator on the backplane is filtered to supply a 10V operating volt age for the exciter board circuitry ...

Page 167: ...VHF Exciter Module 6 68P81096E22 C 09 30 05 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 168: ...DULE TX ENABLE RF ISOLATION CIRCUITRY VCO FEEDBACK VCO SELECT CIRCUITRY 8 5V SPI BUS CLOCK DATA 21 P O P3601 2 1 MHz REF FROM SCM BUFFER AMP A D CONVERTER METERING SPI BUS CLOCK DATA VARIOUS SIGNALS FROM EXCITER BOARD TO BE MONITORED METERING CIRCUITRY CHIP SELECT 13 P O P3601 A D CHIP SELECT FROM SCM 15 V FILTER REGULATOR CIRCUITRY 15V SOURCE FOR SYNTH CHARGE PUMP 5V SOURCE 10V SOURCE 10 V FROM B...

Page 169: ...ansmit antenna The output power is continually monitored and regulated by a feedback and control loop with a power output control voltage being generated by the transmitter control circuitry located on the PA Input Output boards Overview of Circuitry The PA contains the following circuitry Intermediate Power Amplifier IPA hybrid substrate amplifier stage which accepts low level input from Exciter ...

Page 170: ... and output external connections 2 IDENTIFICATION OF INPUTS OUTPUTS Figure 1 VHF 30 40 W Power Amplifier Module Inputs Outputs Transmit RF Output Connector Outside View Inside View Front Back Front Back PA I O Connector To SCM through Backplane Input From Power Supply RF Input From Exciter Module ...

Page 171: ...rculator is built into the CLN1227 Power Amplifier Module to provide isolation between the PA module and the transmit antenna Heat Sink Temperature Sense A thermistor mounted on the PA printed circuit board outputs a variable resistance proportional to the heat sink temperature This signal is fed to the power control circuitry on the PA output board which monitors the sig nal and reduces the PA ou...

Page 172: ...m to a digital sig nal and upon request by the Station Control Module outputs the signal to the Station Control Module via the SPI bus For example the directional coupler generates a dc voltage proportional to the reflected power This signal is converted to a digital signal and sent to the SCM If the sense line indicates an impedance mismatch high VSWR the PA is either cut back in power or shut do...

Page 173: ...SPI BUS CLOCK DATA VOLTAGE TRANSLATOR V_OMNI SPI BUS TO FROM SCM VIA BACKPLANE D A CONVERTER 5 V REGULATOR 5 Vdc SOURCE 14 2 Vdc FROM POWER SUPPLY 14 2 Vdc SOURCE 28 6 Vdc FROM POWER SUPPLY 28 6 Vdc SOURCE V_FWD V_RFLD A D CONVERTER SPI BUS CLOCK DATA CHIP SELECT CHIP SELECT D A AND A D CHIP SELECTS FROM SCM 14 2 Vdc 30 40 W OUTPUT BOARD 30 40 W INPUT BOARD CLN1226 40 W and CLN1227 30 W POWER AMPL...

Page 174: ... and amplifies the signal for transmission via the site transmit antenna The output power is continually monitored and regulated by a feedback and control loop with a power output control voltage being generated by the transmitter control circuitry located on the PA Input Output boards Overview of Circuitry The PA contains the following circuitry Final Device Module a three stage amplifier which a...

Page 175: ...and output external connections 2 IDENTIFICATION OF INPUTS OUTPUTS Figure 1 VHF 100 W Power Amplifier Module Inputs Outputs Transmit RF Output Connector Outside View Inside View Front Back Front Back PA I O Connector To SCM through Backplane Input From Power Supply RF Input From Exciter Module ...

Page 176: ... to provide iso lation between the PA module and the transmit antenna Heat Sink Temperature Sense A thermistor mounted on the PA printed circuit board outputs a variable resistance proportional to the heat sink temperature This signal is fed to the power control circuitry on the PA output board which monitors the sig nal and reduces the PA output power and enables a fan if the PA temper ature exce...

Page 177: ...to a digital sig nal and upon request by the Station Control Module outputs the signal to the Station Control Module via the SPI bus For example the directional coupler generates a dc voltage proportional to the reflected power This signal is converted to a digital signal and sent to the SCM If the sense line indicates an impedance mismatch high VSWR the PA is either cut back in power or shut down...

Page 178: ...A TEMP V_CNTL SPI BUS CLOCK DATA VOLTAGE TRANSLATOR V_OMNI SPI BUS TO FROM SCM VIA BACKPLANE D A CONVERTER 5 V REGULATOR 5 Vdc SOURCE 14 2 Vdc FROM POWER SUPPLY 14 2 Vdc SOURCE 28 6 Vdc FROM POWER SUPPLY 28 6 Vdc SOURCE V_FWD V_RFLD FAN ENABLE SUPPLY A D CONVERTER SPI BUS CLOCK DATA CHIP SELECT CHIP SELECT 14 2 Vdc 14 2 Vdc DC FAN 100 W OUTPUT BOARD 100 W INPUT BOARD PA DA CS 28 6 Vdc Σ FAN ENABLE...

Page 179: ...eshooting section of this manual for detailed trou bleshooting procedures for all modules in the station General Description The SCM serves as the main controller of the station The SCM contains an MC68356 microprocessor which forms the heart of the module This IC combines a 68302 Integrated Multiprotocol Processor IMP with a 56002 Digital Signal Processor DSP which along with the support circuitr...

Page 180: ...y controlled devices on the SCM Serial Input Output Circuitry provides bus circuitry to buffer two of the Host microprocessor Serial Communication Interface SCI ports SCC1 and SCC2 for communication with optional modules and an external IBM PC running Radio Service Software RSS Audio Processing Circuitry routes the various audio input signals such as microphone wireline and receiver audio to outpu...

Page 181: ...NDICATORS AND INPUT OUTPUT CONNECTIONS Figure 1 Station Control Module Indicators and Input Output Connections Receiver I O Connector To Receiver Module Exciter I OConnector To Exciter Module 5 10MHz External Reference Signal Service Speaker Connector RSS Connector Service Microphone Connector Edge Connector mates to J3 on Backplane ...

Page 182: ...only 18 lines are required to access the non volatile Flash memory SRAM memory and provide control via memory mapping for Parallel I O circuitry in the SCM The Host μP operates in MC68008 mode providing an 8 bit data bus which buffered for the Flash and SRAM memory is used to transfer data to from the SCM memory as well as Par allel I O circuitry The Host μP also provides the signals controlling t...

Page 183: ...evice stores station control software CS0 is also enabled after a reset to access the boot ROM upon system start up CS1 CS2 are used to control access of up to two SRAM devices CS3 is used to control access to the Parallel I O circuitry control signals and SPI bus chip selects for station modules and external options Serial I O Circuitry The Serial I O circuitry interfaces with two of the Serial C...

Page 184: ...al Host μP clock With a Host μP clock frequency of 20 4 MHz the minimum SPI CLK is approximately 319 KHz It is used to shift serial data from the Host μP to a slave and from the slave back to the Host μP MOSI Master Out Slave In provides the data path containing information from the master SCM to the slave Receiver Exciter PA etc This is an output from the Host μP MISO Master In Slave Out provides...

Page 185: ...y to 16 8 Mhz 0 3 ppm High Stability Mode For some systems the free running stability of the VCO is unacceptable for optimum system performance Therefore an exter nal 5 10 MHz source is connected permanently to the BNC connector In this mode the PLL compares the 5 10 MHz reference and a sample of the 16 8 MHz VCO output and generates a dc correction voltage The control voltage enable switch is clo...

Page 186: ...m DSP to Exciter Module modulation sig nals via Audio Processing circuitry Digitized voice audio from DSP to external speaker via Audio Processing circuitry speaker is connected to appropriate SCM connector behind the sta tion front panel Trunk RX Audio voice and control channel to Trunking MRTI connector on backplane MRTI RX Audio to Trunking MRTI connector on backplane Digital Signal Processor D...

Page 187: ...odec ICs referred to as Codec 1 and Codec 5 to handle wideband codec operation and the additional signal line requirements of trunking operation Since audio signals input to or out put from the DSP are in a digitized format the codecs convert the audio signals between analog and digital formats as required Microphone and MRTI audio signals are digitized by Codec 2 p o Audio Pro cessing Circuitry b...

Page 188: ...of the Audio Mode input on the system connector the signal is changed to band limited RX audio with optional de emphasis and squelch In line test mode Line 1 input audio from the Wireline Interface Board WIB is routed to this output for level checking and test purposes Auxiliary TX Audio The system connector input Aux TX Audio provides a path for audio from exter nal equipment to reach the transmi...

Page 189: ...rd from the local speaker Trunking Audio A trunking station can operate as either a control channel or a voice channel In either case wideband audio is routed to from the Trunking Central Controller TCC as Trunk TX Data through Codec 1 and Trunk RX Data through Codec 5 providing paths for control and status tones For voice channel operation voice audio is routed to the WIB as described in the Wire...

Page 190: ...ociated chip se lect signals from the Host μP Front Panel LEDs Four status LEDs are provided on the front panel to provide visual indications of various station operating conditions The LEDs are driven via software control by five lines from an octal D flip flop in the Parallel I O circuitry The front panel Station Status indicator actually comprises two LEDs one red and one green which produce a ...

Page 191: ... for the Receiver and Exciter modules 12 V Regulator Circuitry accepts input from the 15 V regulator to gen erate the voltage required under Host μP control for powering the Flash memory device during programming and erasing cycles 5 V Regulator Circuitry provides VCCA analog 5 V for the Audio Processing circuitry in the SCM Filtering Circuitry filters the 14 2 V and 5 V from the power supply via ...

Page 192: ...XCITER MODULE VCCA ANALOG 5 V 14 2 V 14 2 Vdc FROM POWER SUPPLY VIA BACKPLANE 5 Vdc FROM POWER SUPPLY VIA BACKPLANE 10 Vdc FROM BACKPLANE REGULATOR 8 Vdc FROM BACKPLANE REGULATOR FLASH PWR EN VCC 5 V DIGITAL GROUND STATIC GROUND ANALOG GROUND GROUND FROM BACKPLANE 2 1 MHz FROM DSP ASIC FROM HOST MICROPROCESSOR TO EXTERNAL SPEAKER FILTER CIRCUITRY Figure 2 Station Control Module Functional Block Di...

Page 193: ...N FRONT OF SCM 6 2 NON INVERTING BUFFERS SCC1 CS FLASH PWR EN OPTION1 SCI OPTION2 SCI INTER PROCESSOR SERIAL COMMUNICATIONS I F TO OPTION BOARDS VIA BACKPLANE PARALLEL I O CHIP SELECTS CS LATCH SPI CLK MOSI BUFFERS 3 MISO GATE HOST SPI BUS TO FROM BACKPLANE TO FROM EXCITER MODULE TO FROM RECEIVER MODULE DATA IN PTEMP OPTION1 ID OPTION2 ID WIRELINE ID WL DC CONTROL SCM VERSION EXT MIC SWITCHES A D ...

Page 194: ...AUDIO TRUNK TX DATA AUX TX AUDIO SWITCH TO LINE 2 OUTPUT VIA BACKPLANE AND WIB BUFFER PCM1 DI PCM1 DO SPEAKER AUDIO MRTI TX AUDIO MIC AUDIO MIC PREAMP SWITCH SWITCH CODEC2 MUX CONT SPKR MUTE SWITCH TRUNK RX AUDIO DISC RX AUDIO 24 KHz LINEAR VCO MOD AUDIO TO EXCITER MODULE REF MOD AUDIO TO EXCITER MODULE DIGITAL MOD POTS MOSI SPI CLK MOD MUX CONT R 2R LADDER RSSI DC VOLTAGE TO OPTION BOARDS VIA BAC...

Page 195: ... Interface Board WIB serves as the interface between the customer telephone lines and the station equipment Each WIB contains circuitry to interface with a variety of telephone line configurations and signal types The WIB is installed behind the front panel above the Station Control Module within the option card bracket and is connected to a 96 pin Euro connector located on the backplane of the st...

Page 196: ...location of the WIB jumpers and all input and output external connections 2 INPUTS AND OUTPUT CONNECTIONS Figure 1 CLN1204 Wireline Interface Board Jumpers and Input Output Connections Mates with J4 of Backplane Interface Board Impedance Matching Jumpers see Figure 2 for details ...

Page 197: ...data signals of the station equipment In general the WIB routes all voice and or remote control sig nals between the station equipment and the landline equipment e g a control center modem etc As shown in the block diagrams in Figures 3 and 4 the WIB contains one 2 wire audio circuit and one 4 wire audio circuit Also provided is imped ance matching jumper fields which are used to meet various wire...

Page 198: ...outbound and inbound signals are mixed and routed via the inbound audio path to the SCM where an adaptive cancellation routine in the DSP isolates the inbound au dio The 2 wire audio circuit operates as follows Landline to Station balanced audio is input to the primary of an audio transformer The signal is induced into the transformer secondary and fed to a buffer Note that jumpers in parallel wit...

Page 199: ...CLN1204 Wireline Interface Board 68P81096E28 C 5 09 30 05 adjust circuitry The SCM controls the gain adjust circuitry via the SPI latch to provide four coarse levels of gain 0dB 6dB 12dB and 20dB ...

Page 200: ...way Sweden 820Ω 120nF 220Ω 820Ω 115nF 220Ω 830Ω 72nF 150Ω 600Ω 500Ω 330nF 400Ω 620Ω 310nF 370Ω 820Ω 115nF 220Ω 820Ω 115nF 220Ω 820Ω 115nF 220Ω 900Ω 30nF Figure 2 CLN1204 Wireline Interface Board Jumper Settings C74 T1 T2 C15 C84 P3 E D C B A P7 P1 P9 P5 P8 E D C B A E D C B A E D C B A Jumper In A Pin 1 connects to Pin 2 This setting represents a standard 600 ohm matching and is the factory defaul...

Page 201: ...hasis and gain adjust cir cuitry To compensate for line losses the gain adjust circuitry provides coarse adjustment for eight levels of gain adjust 5 10 15 20 25 30 35 and 40dB which is under the control of the SCM via the SPI latch The output of the gain adjust circuitry is de emphasized and then fed to an A D converter in the PCM codec which digitizes the audio signal into a PCM output This outp...

Page 202: ...CLN1204 Wireline Interface Board 8 68P81096E28 C 09 30 05 former The audio signal is induced into the secondary and output to the landline system via the screw terminal connector as balanced audio ...

Page 203: ...CUITRY A D CONVERTER D A CONVERTER STATION TO LANDLINE VOICE AUDIO PATH LINE DRIVER LINE DRIVER PCM VOICE AND DATA FROM SCM PCM VOICE AND DATA TO SCM LINE 2 AUDIO FROM STATION TO LANDLINE AND FROM LANDLINE TO STATION DE EMPHASIS 2 WIRE VOICE SIGNAL PATHS BUFFER SPI LATCH BIT 4 5 SPI LATCH BIT 2 GAIN ADJUST AMPLIFIER SPI LATCH BIT 1 PRE EMPHASIS AMPLIFIER Figure 4 CLN1204 4 Wire Voice Audio Path Fu...

Page 204: ...R2000 station at this time Refer to the Summary of Op erational Features in the Description section for a list of all currently available features General Description The Wireline Interface Board WIB serves as the interface between the customer telephone lines and the station equipment Each WIB contains circuitry to interface with a 600 Ω impedance telephone line configuration with various signal ...

Page 205: ...tion of the WIB jumpers and all input and output external connections 2 INPUTS AND OUTPUT CONNECTIONS Figure 1 CLN1203 Wireline Interface Board Jumpers and Input Output Connections Remote Control Type Select Jumpers see Figure 2 for details Card edge Connector mates to J4 Backplane ...

Page 206: ...serves as the interface between the cus tomer analog telephone lines and the serial PCM data signals of the station equipment In general the WIB routes all voice and or data signals be tween the station equipment and the landline equipment e g a control center modem etc As shown in the block diagrams in Figures 3 and 4 the WIB contains one 2 wire audio circuit and one 4 wire audio circuit Audio Da...

Page 207: ...sed by the 2 wire audio circuit on the WIB Line 2 Audio The audio transformer in this circuit may have both inbound and outbound audio signals present simultaneously In this case the outbound and inbound signals are mixed and routed via the inbound audio path to the SCM where an adaptive cancellation routine in the DSP isolates the inbound au dio The 2 wire audio circuit operates as follows Landli...

Page 208: ...o the landline system via the wire trap ter minal connector as balanced audio 4 Wire Voice Audio Data Path Refer to Figure 4 For 4 wire configurations phone line connections are made at the wire trap terminal connector on the station backplane Landline to Station sig nals are connected at Line 1 Audio Station to Landline signals are con nected at Line 2 Audio For systems using tone remote control ...

Page 209: ... gain adjust circuitry Under control of the SCM via the SPI latch the gain adjust circuitry provides four coarse levels of gain adjustment 0dB 6dB 12dB and 20dB The output of the gain adjust circuitry is fed through a 2 pole low pass filter and into the inputs of two amplifiers line drivers The outputs of the amplifiers are fed to two transistors which are connect ed in a push pull configuration t...

Page 210: ...ADJUST AMPLIFIER SPI LATCH BIT 1 P O LINE CONNECTOR ON STATION BACKPLANE 2 POLE LOW PASS FILTER GAIN ADJUST CIRCUITRY A D CONVERTER D A CONVERTER STATION TO LANDLINE VOICE AUDIO PATH LINE DRIVER LINE DRIVER PCM VOICE AND DATA FROM SCM PCM VOICE AND DATA TO SCM LINE 2 AUDIO FROM STATION TO LANDLINE AND FROM LANDLINE TO STATION DE EMPHASIS 2 WIRE VOICE SIGNAL PATHS BUFFER SPI LATCH BIT 4 5 SPI LATCH...

Page 211: ...al Description The Wireline Interface Board WIB serves as the interface between the customer telephone lines and the station equipment Each WIB contains circuitry to interface with a 600 Ω impedance telephone line configuration with various signal types The WIB is installed behind the front panel above the Station Control Module within the option card bracket and is connected to a 96 pin Euro conn...

Page 212: ...1 B 09 20 05 Figure 1 shows the location of the WIB jumpers and all input and output external connections 2 INPUTS AND OUTPUT CONNECTIONS Figure 1 CLN1205 Wireline Interface Board Input Output Connections Card edge Connector mates to J4 Backplane ...

Page 213: ...ire to support the Console Priority Interface CPI function The 8 wire capability is described in the following subsections Refer to Figure 2 for a block diagram of the 8 wire voice signal paths 4 wire or 2 wire operation The 4 wire and 2 wire capability is described in the following subsections and is identical to that provided by the 4 wire WIB CLN1203 except that there is no circuitry to support...

Page 214: ...r modem etc As shown in the block diagrams in Figure 2 the WIB contains one 8 wire audio circuit Audio Data Circuits As shown in the block diagram of Figure 2 each WIB contains 2 PCM Co dec filters 2 SPI latches and associated circuitry which can be configured to provide the following signal paths 8 wire voice audio data from landline to station and from station to landline to support CPI operatio...

Page 215: ...ackplane Landline to Station signals are connected at Line 1 Audio Station to Landline signals are connected at Line 2 Audio Voice audio signals sent to from the station via 4 wire copper pair are pro cessed by the 4 wire audio path on the WIB Line 1 Audio Line 2 Audio The 4 wire audio path operates as follows Landline to Station balanced audio Line 1 Audio is input to the primary of an audio tran...

Page 216: ...djust circuitry is de emphasized and then fed to an A D con verter in the PCM codec which digitizes the audio signal into a PCM output This output is fed serially to the DSP ASIC on the SCM which provides a memory mapped interface with the DSP and other SCM audio circuitry refer to the Station Control Module section Station to Landline audio is input to the WIB as PCM data WL 1 2 RXD and fed to a ...

Page 217: ...A PATHS SPI LATCH 1 BIT 0 P O SYSTEM CONNECTOR ON STATION BACKPLANE 2 POLE LOW PASS FILTER GAIN ADJUST CIRCUITRY A D CONVERTER D A CONVERTER LINE DRIVER LINE DRIVER PCM VOICE AND DATA FROM SCM PCM VOICE AND DATA TO SCM LINE 4 AUDIO FROM STATION TO LANDLINE DE EMPHASIS VOICE P O SYSTEM CONNECTOR ON STATION BACKPLANE LINE 3 AUDIO FROM LANDLINE TO STATION BUFFER SPI LATCH 2 BIT 4 5 SPI LATCH 2 BIT 2 ...

Page 218: ...external to the station e g Trunking Controller and the Station Control Module SCM The auxiliary equipment can be Motorola or non Motorola equipment If the Wild Card option is included with the station then some System connector inputs and outputs can be configured through the RSS The Auxiliary I O Board is installed behind the front panel above the Station Control Module within the option card br...

Page 219: ...Auxiliary I O Board 2 68P81096E53 C 09 30 05 Refer to the RSS Online Help for further detail on the GPIs GPOs and jumpers available on the Auxiliary I O Board Notes ...

Page 220: ...ocation of the Auxiliary I O Board input and output external connections 2 INPUT AND OUTPUT CONNECTIONS Figure 1 CLN1206 Auxiliary I O Board Input Output Connections Mates with J1 or J2 of Backplane Interface Board Refer to Figure 2 for the position of board jumpers ...

Page 221: ... the Auxiliary I O Board routes parallel input and output auxiliary equipment control signals between the SCM and the auxiliary equipment There are 23 inputs and outputs available on the Auxiliary I O Board for connec tion with external equipment at any one time There are 11 inputs and 12 outputs The SCM host processor reads and writes the auxiliary information with 16 bit data telegrams via the S...

Page 222: ...either an opto isolated or transistor input This input can also be jumpered to the SPI Latch or to the EXT_PTT SCM direct input jumpers P2 and P9 When jumpered to the EXT_PTT GPI_14 is used as fast External PTT control The External PTT line has a direct path to the SCM in order to decrease reaction time by eliminating SPI process ing delay Table 1 General Purpose Inputs GPI Auxiliary I O P1 Pin Ba...

Page 223: ...n of the SPI Bus input circuitry signals Table 3 provides a description of input circuitry for the Option Interrupt Request signal Note 1 OP1 2 represent two different signals routed to either Option Slot 1 P1 B11 that is signal OP1_CS1 or Option Slot 2 which is also P1 B11 that is signal OP2_CS1 Note 2 All signals are 5V TTL signals Table 2 SPI Bus Input Circuitry Signals Signal Name Function Aux...

Page 224: ...urrent GPO_14 and GPO_15 can be configured as dry potential free con tact outputs relay contact rating is 250V 1 A maximum In addition there is a RF Relay Transistor Drive Stage provided which can be used for base station backup configurations 40V 100 to 200mA maximum sink current The Auxiliary I O Board also provides some fast reacting outputs which are directly controlled by the SCM processor an...

Page 225: ...CS2 Table 4 SPI Bus Output Circuitry Signals Signal Name Function Auxiliary I O Board Connector P1 Description Signal Direction MOSI Master Out Slave In Pin A7 serial SPI Latch Data Input SPI _CLK SPI Bit Clock Pin C8 A low to high transition shifts serial data bit in to the shift register Input OP1 2_CS1 see Note 1 SPI Select Line Pin A10 A high to low transition activates the serial shift mode I...

Page 226: ...O 50 40 Wild Card output GPO_3 C6 A28 LCO 50 40 Not Supported Do Not Use GPO_4 A24 C12 LCO 50 40 Not Supported Do Not Use GPO_5 B23 B12 LCO 50 40 Not Supported Do Not Use GPO_6 B22 B11 LCO 50 40 Not Supported Do Not Use GPO_7 B24 B9 LCO 50 40 Not Supported Do Not Use GPO_8 C32 A1 OCO 100 40 Wild Card output GPO_9 B32 B1 OCO 100 40 Dedicated to Rx_Lock output GPO_10 A32 C1 OCO 100 40 Dedicated to T...

Page 227: ...input which can be jumpered to be a transistor input or opto isolated In addition it can be dedicated to the Ext_PTT Line routed to the SCM This function is a fast external PTT an active low function The board jumper settings for P2 P9 P6 are provided in Table 6 Settings for P5 are provided in Table 7 Settings for P3 P4 are provided in Table 8 P7 and P8 are not used Figure 2 CLN1206 Auxiliary I O ...

Page 228: ... Opto A26 Opto 3 4 1 2 Out via Transistor B26 9 10 7 8 Out Function on GPO_14 Output Type System Connector Output Pins Auxiliary I O Board Jumper P5 AC Fail via Relay Closure B29 A30 2 4 SPI Latch for Bit 14 software defined via Relay Closure B29 A30 1 2 Function on GPO_15 Output Type System Connector Output Pins Auxiliary I O Board Jumpers P3 P4 Fast Carrier Detect via Relay Closure C3 B3 2 4 2 4...

Page 229: ... in Note 3 In this configuration the second remaining unused input type must be jumpered to the SPI Buffer The Buffer Input should never be left floating otherwise the IRQ Generator will not function properly i e use either P2 1 2 or P9 7 8 Note 3 This configuration represents the M Signal of 4 wire E M Trunk Type I Phone Signalling The opposite direction of the E M is covered in Note 2 Note 4 Ind...

Page 230: ... Functional Block Diagram SCM TO AUXILIARY EQUIPMENT AUXILIARY EQUIPMENT TO SCM 14 OPEN COLLECTOR TRANSISTOR OUTPUTS 2 DRY CONTACT OUTPUTS 16 OUTPUTS SPI OUTPUT LATCHES INTERRUPT GENERATOR INITIALISATION RESET CONTROL 14 TRANSISTOR BUFFERED INPUTS 2 OPTO ISOLATED INPUTS 16 INPUTS GENERAL PURPOSE OUTPUTS SYSTEM CONNECTOR SPI BUS SPI BUS RF RELAY OUTPUT ...

Page 231: ...e equipment This section provides a general description identification of inputs outputs and a pin out listing for all connectors including information on signal names functions and levels General Description The Backplane Interconnect Board mounted across the rear of the station is constructed with connectors on both sides The connectors on one side mate with various station plug in modules such ...

Page 232: ... 09 30 05 A metal shield mounts over the rear of the backplane board to provide pro tection for the circuit board runners and connector solder pads ESD pro tection and EMI RFI shielding as shown in Figure Figure 1 Backplane Interconnect Board ...

Page 233: ...ews J4 Mates With Wireline Interface Board see Table 4 for details J1 Mates With Option Board 1 see Table 5 for details J2 Mates With Option Board 2 see Table 6 for details J3 Mates With Station Control Module P7 Mates With Control Cable From Power Amplifier see Figure 3 for details P8 Mates With Power Supply Cable see Figure 3 for details J5 System Connector see Table 3 for details J7 Trunking MR...

Page 234: ... from front of station behind front panel J3 96 pin Eurocard connector accepts plug in Station Control Module from front of station behind front panel J4 96 pin Eurocard connector accepts plug in Wireline Interface Board from front of station behind front panel J5 96 pin Eurocard connector provides System connection to external communications equip ment on back of station J6 Wireline self clamping...

Page 235: ...deband or voice band audio from second receiver selected by Aux TX Audio Mode WCI Aux TX Audio Mode WCI Digital To SCM Wild Card Input selects mode of Disc RX Audio output Aux TX Au dio input Carrier Detect Switch Digital From SCM to indicate carrier present TTL active high Carrier SQ Override WCI Digital Wild Card Input disables carrier squelch gating qualifier TTL active high Chassis GND Power S...

Page 236: ...tal SPI data from Master SCM to Slave devices standard TTL MRTI RX Audio Analog From SCM Station clear audio signals RX Wireline TX or Mic bound for landline via MRTI MRTI accepts a 1 3 Vpp 8 dB input level MRTI has an ALC MRTI RX Carrier Digital From SCM to MRTI to indicate squelch status of station and control direction of audio between SCM and MRTI for half duplex patch modes when signal is ac ...

Page 237: ...ith a Vcesat of 1 0 V maximum a 2 mA load Ptemp Analog Input to SCM from peripheral temperature sensing device on circulator Raw WL TX Audio Analog Wideband coded TX audio to SCM 5 Vdc maximum level if clipped Rdstat R2 Control Digital From SCM to control second receiver TTL active high Repeater ON OFF WCI Digital Wild Card Input controls audio routing and repeater keyup TTL Reset Digital System r...

Page 238: ...odulation from TCC Contains all trunking transmit data in cluding 3600 bps control channel data 8 8 Vpp 0 4 V 0 Vdc and 300 or 150 bps voice channel data 2 8 Vpp 0 3 V 0 Vdc Trunk TX Data Analog Trunking data signal ground Trunk TX Inhibit Digital To SCM inhibits standby station TTL active low TX Lock WCO Digital Wild Card Output indicates TX synthesizer is locked TTL active high TX PL On Off WCI ...

Page 239: ...ctive low Wireline2 Latch CS Digital Chip select for SPI latch 2 on 8 wire WIB only TTL active low WL DC Control Analog To SCM A D from WIB which has DC remote control capability voltage level corresponds to detected wireline current level WL DC Control REQ Digital Interrupt request to SCM from WIB which has DC remote control capability TTL active low when control current detected on wireline Tabl...

Page 240: ...number followed by a pin number The first part e g J3 represents the assigned connector number followed by the specific con nector pin number s symbols and indicate pin assignment functions which are jumper configurable This applies to some General Purpose Inputs GPIs and some General Purpose Outputs GPOs an asterisk indicates an active low signal Note ...

Page 241: ...7 MRTI RX Audio 8 Patch Inhibit or RSTAT 9 GND 10 Aux Carrier or TSTAT 11 Trunk MRTI PTT 12 Aux Carrier or TSTAT 13 Trunk TX Data 14 Spare 15 MRTI RX Carrier 16 GND 17 GND 18 GND 19 GND 20 Spare 21 Trunk TX Data 22 Trunk RX Audio 23 Trunk Mute 24 PL Strip or CCI 25 Patch Inhibit or RSTAT The following symbols and abbreviations are used in Table 3 line is Active Low NS Not Supported this pin should...

Page 242: ... J3 B19 TTL input Not Supported O J1 A19 J2 A19 J3 A19 15 Spare 310 GND Station ground GND Station ground 16 Spare 308 Spare 300 GND Station ground 17 Aux TX Audio I J1 C16 J2 C16 J3 C16 RSS programmable input sensitivity Spare 321 Disc RX Audio O J1 A16 J2 A16 J3 A16 Discriminator audio flat response 80mV to 400mV for 60 deviation 18 Cntrl 14 2 VDC O P8 pins 3 4 thru F2 14 2Vdc Note 1 Cntrl 14 2 ...

Page 243: ...und 10 Spare 28 Spare 37 Line 4 O J5 B28 11 Line 3 I J5 C30 Spare 19 Spare 10 12 Spare 1 Spare 38 Line 3 I J5 C28 13 WL DC Control O J3 A27 WL DC Control REQ O J3 B27 Spare 46 14 GND Station ground GND Station ground GND Station ground 15 14 2 VDC I P8 pins 3 4 thru F1 14 2 VDC I P8 pins 3 4 thru F1 14 2 VDC I P8 pins 3 4 thru F1 16 Spare 2 Reset I J1 B16 J2 B16 J3 B16 P7 3 Spare 47 17 Spare 29 Sp...

Page 244: ...C16 J3 C16 J5 A17 17 GND Station ground Decrypted RX Audio I J2 B17 J3 B17 Clear TX Audio I J2 C17 J3 C17 18 GND Station ground GND Station ground TX Code Detect I J2 C18 J3 C19 J5 A14 19 RX Code Detect Future I J2 A19 J3 A19 J5 C14 Ext Code Detect I J2 B19 J3 B19 J5 B14 Option1 ID O J3 C18 20 Coded Mod Audio I J2 A20 J3 A20 Coded WL RX Audio I J2 B20 J3 B20 J4 B20 Raw WL TX Audio I J2 C20 J3 C20 ...

Page 245: ...5 A17 17 GND Station ground Decrypted RX Audio I J1 B17 J3 B17 Clear TX Audio I J1 C17 J3 C17 18 GND Station ground GND Station ground TX Code Detect I J1 C18 J3 C18 J5 A14 19 RX Code Detect Future I J1 A19 J3 A19 J5 C14 Ext Code Detect I J1 B19 J3 B19 J5 B14 Option2 ID O J3 B18 20 Coded Mod Audio I J1 A20 J3 A20 Coded WL RX Audio I J1 B20 J3 B20 J4 B20 Raw WL TX Audio I J1 C20 J3 C20 J4 C20 21 GN...

Page 246: ...16 Disc RX Audio O J1 A16 J2 A16 J5 C17 Reset O J1 B16 J2 B16 J4 B16 P7 3 Aux TX Audio I J1 C16 J2 C16 J5 A17 17 GPIO_0 CNTR I O I O J1 A9 J2 A9 J5 C24 Decrypted RX Audio I J1 B17 J2 B17 Clear TX Audio O J1 C17 J2 C17 18 Ptemp I P10 3 Option2 ID I J2 C19 Option1 ID I J1 C19 19 RX Code Detect O J1 A19 J2 A19 J5 C14 Ext Code Detect I J1 B19 J2 B19 J5 B14 TX Code Detect O J1 C18 J2 C18 J5 A14 20 Code...

Page 247: ...220 Power Supply module is connected to a choke the station equipment may be damaged Do NOT connect a sta tion with a CLN1220 Power Supply module to a Power Factor Correction Choke There is one choke for each station mounted in a rack or cabinet Each station is connected to a choke The choke is connected to the ac power source with the interconnect cable supplied as part of the choke FRU DLN6456 G...

Page 248: ...o accept only high temperature type mating connectors Also provided is a Battery Backup connection Power supply cooling when necessary is provided by an external fan located near the middle of the heatsink which provides forced air across the power supply heatsink fins An external battery charger system is required to support the battery backup feature Note ...

Page 249: ...cifications Parameter Specification CLN1220 DLN6458 Input Voltage Range 85 to 264 Vac 180 to 264 Vac Operating Temperature 30 to 60 C 22 to 140 F Input Frequency Range 47 to 63 Hz Steady State Output Voltage 28 6 V 13 A 14 2 V 8 A 5 1 V 2 A Output Power Rated 500 W Load Transient 28 6 Vdc output 4 of steady state value Output Ripple 28 6 Vdc 14 2 Vdc 5 1 Vdc 50 mV p p 25 C 77 F 50 mV p p 25 C 77 F...

Page 250: ...upply Module input and output external connections 3 IDENTIFICATION OF INPUTS OUTPUTS Figure 1 Model CLN1220 DLN6458 Power Supply Module Input Output Connections Battery Backup Connector Outside View Inside View Front Back Front Back Mates To Backplane DC Output To PA Module Battery Backup Connector AC Power Connector ...

Page 251: ...ver Voltage Detection and Shutdown The 28 6 V and 14 2 V dc outputs are protected from continuous over volt ages by detection circuits that cause the supply to shutdown and then try to restart itself If the over voltage condition continues to occur the supply goes into a hiccup mode of shutting down and trying to restart If the over voltage condition is removed the supply automatically recovers In...

Page 252: ...l load Fan Control Line The supply incorporates temperature sense fan enable circuitry for controlling a 12Vdc fan mounted on the surface of the heatsink assembly The power supply cir cuitry senses the internal temperature of the power supply When the internal tem perature exceeds 60 C 5 C 12 V is enabled at J1 1 to turn on the fan The 12 V fan supply is derived from the 14 2 V output Power to the...

Page 253: ...SOLATOR OVER VOLTAGE DETECT OVER VOLTAGE CROWBAR PRE REGULATOR OVER CURRENT AMP MAIN PULSE WIDTH MODULATOR 14 2 V DC DC SWITCHER RECTIFIER AND FILTER OVER VOLTAGE DETECT OVER CURRENT SENSE 5 1 V REGULATOR OVER VOLTAGE SENSE AND SHUTDOWN 14 2 VOLT FEEDBACK 28 6 VOLT FEEDBACK 14 2 VOLT CONVERTER SHUTDOWN 14 2 V PULSE WIDTH MODULATOR OVER VOLTAGE DETECT 28 6 VOLT FEEDBACK OVERVOLTAGE PROTECTION OPTO ...

Page 254: ...e General Description The DLN6622 Power Supply Module accepts an ac or a dc input ac input 85 to 264 Vac 50 60 Hz dc input 21 6 to 32 Vdc and generates three output dc voltages to power the station modules 5 1 Vdc 14 2 Vdc and 28 6 Vdc When used in dc input mode the 28 6 Vdc output is determined by the dc input minus 0 5 Vdc The power supply is a high frequency switched mode design all con tained ...

Page 255: ...t Power Rated 500 W Load Transient 28 6 Vdc output 4 of steady state value Output Ripple 28 6 Vdc 14 2 Vdc 5 1 Vdc 50 mV p p 25 C 77 F 50 mV p p 25 C 77 F 100 mV p p 25 C 77 F Efficiency Greater than 75 full load Table 2 DLN6622 Power Supply Module DC Performance Specifications Parameter Specification Operating Temperature 30 to 60 C 22 to 140 F Input Voltage Range 21 6 to 32 Vdc Steady State Outp...

Page 256: ...put and output external connections 3 IDENTIFICATION OF INPUTS OUTPUTS Figure 1 Model DLN6622 Power Supply Module Input Output Connections Battery Backup DC Input Connector Outside View Inside View Front Back Front Back Mates To Backplane DC Output To PA Module AC Power Connector Battery Backup DC Input Connector ...

Page 257: ... the overload condition Over Voltage Detection and Shutdown The 28 6 V and 14 2 V dc outputs are protected from continuous over volt ages by detection circuits that cause the supply to shutdown and then try to restart itself If the over voltage condition continues to occur the supply goes into a hiccup mode of shutting down and trying to restart If the over voltage condition is removed the supply ...

Page 258: ...eds 60 C 5 C 12 V is en abled at J1 1 to turn on the fan The 12 V fan supply is derived from the 14 2 V output Power to the fan is off when the temperature is below the set limit The fan turns for approximately 5 seconds when power is first applied as a diagnostic indicator that the fan is functional Overtemperature Protection The power supply will turn off all outputs when an operational ambient ...

Page 259: ...DLN6622 500W Power Supply Module 6 68P81011Y31 O 03 10 06 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 260: ...2 5 GROUND 3 6 28 6 Vdc 1 2 BATT NEG BATT POS J3 TO PA MODULE J2 1 4 5 6 5 1 Vdc 3 4 14 2 Vdc 2 7 GROUND 8 TO BACKPLANE 1 J1 TO FAN FROM BATTERY INTERFACE AC FAIL BRIDGE RECTIFIER AND INRUSH EMI FILTER AC MAINS INPUT 85 264 Vac 50 60 Hz DRV BULK SVCC LS PVCC 28 6VP STEP DOWN BULK CONVERTER 14 2VP OUTPUT FILTER OUTPUT FILTER STEP DOWN BULK CONVERTER OUTPUT FILTER CROWBAR CIRCUIT PWM CONTROLLER PWM ...

Page 261: ...ion General Description The CLN1221 Power Supply Module accepts an ac input 85 to 264 Vac 50 60 Hz and generates two output dc voltages to power the station modules 5 1 Vdc and 14 2 Vdc The power supply is a high frequency switched mode design utilizing Pulse Width Modulation PWM control all contained in a metal heatsink mounted on the left hand side of the sta tion The design provides for over vo...

Page 262: ... Module Performance Specifications Parameter Specification Operating Temperature 30 to 60 C 22 to 140 F Input Voltage Range 85 to 264 Vac Input Frequency Range 47 to 63 Hz Steady State Output Voltage 14 2 V 16 5 A 5 1 V 2 A Output Power Rated 250 W Load Transient 14 2 Vdc output 2 5 of steady state value Output Ripple 14 2 Vdc 5 1 Vdc 50 mV p p 25 C 77 F 100 mV p p 25 C 77 F Efficiency Greater tha...

Page 263: ...Module input and output external connections 3 IDENTIFICATION OF INPUTS OUTPUTS Figure 1 Model CLN1221 Power Supply Module Input Output Connections Outside View Inside View Front Back AC Power Connector Battery Backup Connector Front Back Mates To Backplane DC Output To PA Module Battery Backup Connector ...

Page 264: ...rcuits that cause the supply to shutdown and then try to restart it self If the over voltage condition continues to occur the supply goes into a hiccup mode of shutting down and trying to restart If the over voltage condition is removed the supply automatically recovers In addition the 5 1 Vdc output is protected by an over voltage detect circuit that shuts down both series regulators at the same ...

Page 265: ...UTDOWN CIRCUIT MAIN SWITCHER POWER STAGE MAIN OUTPUT RECTIFIER MAIN OUTPUT FILTER OPTO ISOLATOR PRE REGULATOR PULSE WIDTH MODULATOR 5 1 V REGULATOR OVER VOLTAGE SENSE AND SHUTDOWN 14 2 VOLT FEEDBACK OVER VOLTAGE DETECT 14 2 VOLT FEEDBACK OVERVOLTAGE PROTECTION OPTO ISOLATOR VOLTAGE FEEDBACK REF AMP SHUTDOWN 5 1 VOLT FEEDBACK 2 5 GROUND 1 4 1 2 BATT POS BATT NEG J10 TO PA MODULE J2 1 4 5 6 5 1 Vdc ...

Page 266: ...pts an ac or a dc input 85 to 264 Vac 50 60 Hz dc input 10 8 to 16 Vdc and generates two output dc voltages to power the station modules 5 1 Vdc and 14 2 Vdc When used in dc input mode the 14 2 Vdc output is determined by the dc input minus 0 5 Vdc The power supply is a high frequency switched mode design all con tained in a metal heatsink mounted on the left hand side of the station The design pr...

Page 267: ...ge 14 2 V 16 5 A 5 1 V 2 A Output Power Rated 250 W Load Transient 14 2 Vdc output 2 5 of steady state value Output Ripple 14 2 Vdc 5 1 Vdc 50 mV p p 25 C 77 F 100 mV p p 25 C 77 F Efficiency Greater than 75 full load Table 2 DLN6624 Power Supply Module DC Performance Specifications Parameter Specification Operating Temperature 30 to 60 C 22 to 140 F Input Voltage Range 10 8 to 16 Vdc Steady State...

Page 268: ...put and output external connections 3 IDENTIFICATION OF INPUTS OUTPUTS Figure 1 Model DLN6624 Power Supply Module Input Output Connections Outside View Inside View Front Back AC Power Connector Battery Backup DC Input Connector Front Back Mates To Backplane DC Output To PA Module Battery Backup DC Input Connector ...

Page 269: ...ction and Shutdown The 14 2 Vdc output is protected from continuous over voltages by detec tion circuits that cause the supply to shutdown and then try to restart it self If the over voltage condition continues to occur the supply goes into a hiccup mode of shutting down and trying to restart If the over voltage condition is removed the supply automatically recovers In addition the 5 Vdc output is...

Page 270: ...29 O 5 03 10 06 Overtemperature Protection The power supply will turn off all outputs when an operational ambient temperature of 80 C 2 C has been reached with the supply operating at any input within its operating input voltage range dc and ac ...

Page 271: ...DLN6624 250W Power Supply Module 6 68P81011Y29 O 03 10 06 THIS PAGE INTENTIONALLY LEFT BLANK ...

Page 272: ...ARD CONVERTER 2 5 GROUND 1 4 TO PA MODULE J2 1 4 5 6 5 1 Vdc 3 4 14 2 Vdc 2 7 GROUND 8 TO BACKPLANE AC FAIL BRIDGE RECTIFIER AND INRUSH EMI FILTER AC MAINS INPUT 85 264 Vac 50 60 Hz DRV BULK SVCC LS PVCC OUTPUT FILTER STEP DOWN BULK CONVERTER OUTPUT FILTER CROWBAR CIRCUIT PWM CONTROLLER 14 2VP DC INPUT 10 8 16 Vdc 1 2 BATT NEG BATT POS J3 FROM BATTERY INTERFACE PWM CONTROLLER GATE DRIVE CIRCUIT SY...

Page 273: ...ailed troubleshooting procedures for all modules in the station General Description The CLN1222 Power Supply Module accepts a dc input 21 to 32 Vdc and generates three output dc voltages to power the station modules 5 1 Vdc 14 2 Vdc and 28 6 Vdc input voltage dependent The power supply is a high frequency switched mode design utilizing Pulse Width Modula tion PWM control all contained in a metal h...

Page 274: ...rformance Specifications Parameter Specification Operating Temperature 30 to 60 C 22 to 140 F Input Voltage Range 21 to 32 Vdc Input AC Ripple 100 120 Hz and harmonics 10 kHz to 10 MHz Steady State Output Voltage Input voltage dependent 28 6 V 13 A 14 2 V 8 A 5 1 V 2 A Output Power Rated 500 W Output Ripple 28 6 Vdc 14 2 Vdc 5 1 Vdc 50 mV p p 25 C 77 F 50 mV p p 25 C 77 F 100 mV p p 25 C 77 F Effi...

Page 275: ...e model CLN1222 Power Supply Module input and output external connections 3 IDENTIFICATION OF INPUTS OUTPUTS Figure 1 Model CLN1222 Power Supply Module Input Output Connections Outside View Inside View Front Back Front Back Mates To Backplane DC Output To PA Module DC Power Connector ...

Page 276: ...e input power cable and not part of the station Output Over Current Protection An over current condition on the 28 6 Vdc output is limited by an external in line fuse or the external power supply This fuse is in line with the input power cable and not part of the station The trip point for the 14 2 Vdc and 5 1 Vdc outputs is greater than 115 of the maximum current specified for the outputs The pow...

Page 277: ...nal Block Diagram OVER VOLTAGE DETECT OVER VOLTAGE CROWBAR PRE REGULATOR OVER CURRENT AMP 14 2 V DC DC SWITCHER RECTIFIER AND FILTER OVER VOLTAGE DETECT OVER CURRENT SENSE 5 1 V REGULATOR OVER VOLTAGE SENSE AND SHUTDOWN 14 2 VOLT FEEDBACK 14 2 VOLT CONVERTER SHUTDOWN 14 2 V PULSE WIDTH MODULATOR 5 1 VOLT FEEDBACK 1 4 2 5 GROUND 3 6 28 6 Vdc TO PA MODULE J2 1 4 5 6 5 1 Vdc 3 4 14 2 Vdc 14 2 VOLT IN...

Page 278: ...intenance and Troubleshooting section of this manual for detailed troubleshooting procedures for all modules in the station General Description The CLN1223 Power Supply Module accepts a dc input 10 8 to 16 Vdc and generates two output dc voltages to power the station modules 5 1 Vdc and 14 2 Vdc The power supply is contained in a metal heat sink mounted on the left hand side of the station The des...

Page 279: ...Power Supply Module Performance Specifications Parameter Specification Operating Temperature 30 to 60 C 22 to 140 F Input Voltage Range 10 8 to 16 Vdc Input AC Ripple 100 120 Hz and harmonics 10 kHz to 10 MHz Steady State Output Voltage Input dependent 10 8V to 16V 16 5 A 5 1 V 3 2 A Output Power Rated 250 W Output Ripple 14 2 Vdc 5 1 Vdc 50 mV p p 25 C 77 F 100 mV p p 25 C 77 F Efficiency Greater...

Page 280: ...del CLN1223 Power Supply Module input and output external connections 3 IDENTIFICATION OF INPUTS OUTPUTS Figure 1 Model CLN1223 DC Only Power Supply Module Input Output Connections Outside View Inside View Front Back Front Back Mates To Backplane DC Output To PA Module DC Power Connector ...

Page 281: ...e supplied to the station modules If a reverse voltage is present the in line fuse will blow This fuse is in line with the input power cable and not part of the station Output Over Current Protection An over current condition on the 14 2 Vdc output is limited by an external in line fuse or by the external power source This fuse is in line with the input power cable and not part of the station The ...

Page 282: ... Dependent INPUT DC FILTER MAIN OUTPUT FILTER PRE REGULATOR 5 1 V REGULATOR OVER VOLTAGE SENSE AND SHUTDOWN 5 1 VOLT FEEDBACK 2 5 GROUND 1 4 TO PA MODULE J2 5 6 5 1 Vdc 3 4 14 2 Vdc 14 2 VOLT INPUT TO BACKPLANE 1 4 2 7 GROUND 8 REVERSE VOLTAGE PROTECTION Figure 2 CLN1223 250 W DC Only Power Supply Functional Block Diagram ...

Page 283: ...d simplified system upgrades By eliminating dead zones in a communications system the Satellite Receiver improves coverage on a particular receive frequency when used in a receiver voting system General Mechanical Design All elements of the satellite receiver are designed for EIA 48 3cm 19 rack mounting using the same mechanical parts as the MTR2000 Base Station Repeater This allows the equipment ...

Page 284: ...atellite receiver contains the following circuitry Receiver Module Station Control Module Power Supply Module 250 W Backplane Board Wireline Interface Board Auxiliary I O Board optional For detailed information on these modules refer to the previous sections of this manual ...

Page 285: ...ws the satellite receiver input and output external connections 2 INPUT AND OUTPUT CONNECTIONS Figure 2 Satellite Receiver Input Output Connections Rx RF Connector Telephone Connector System Connector AC Power Connector Ground Screw Battery Backup Connector ...

Page 286: ...y dedicated telephone line to the Spectra TAC comparator In the case of a DigiTAC system the RX Code Detect signal is connected to the DVM as well as the wireline audio connections The DVM is then connected by dedicated telephone line to the DigiTAC comparator Figure 2 shows a typical voting system and the connections of the Satellite Receivers Figure 3 Satellite Receiver Connections Within a Voti...

Page 287: ...LAPTOP TYPICAL SPI BUS TRUNKING AUDIO MRTI AUDIO RECEIVER SIGNAL STRENGTH INDICATOR OPTION DEPENDENT AUXILIARY TX AUDIO DISC AUDIO MICROPHONE AUDIO EXTERNAL SPEAKER 20 KHz CODEC BUS 24 KHz CODEC BUS 2 1 MHz REF DSP MEMORY DSP ADDRESS BUS DSP DATA BUS 24 KHz CODEC BUS DSP HOST MICROPROCESSOR SSI 68356 SPI BUS SPI BUS LINE RX LINE TX CODEC 3 8 KHz PCM 4 WIRE VERSION SHOWN LINE 1 IN INBOUND WIRELINE ...

Page 288: ...le allowing maintenance and troubleshooting to the module level Refer also to the Maintenance and Troubleshooting sec tion of this manual for detailed troubleshooting procedures for all modules in the station General Description This Antenna Relay module allows a single antenna to be used for both transmit and receive functions base station applications only The An tenna Relay is controlled by a s...

Page 289: ...ical Antenna Relay Module Inputs Outputs Connects to Station Transmit RF Output From Power Amplifier Module Connects to Station Receive RF Input To Receiver Module or to optional External Preselector Connects to Single Transmit Receive Antenna Mates With Connector P10 on Station Backplane Antenna Relay Control Cable Connects to Peripheral Tray if so equipped ...

Page 290: ...elay and an External Double Circulator Figure 4 shows the kits required when an Antenna Relay and Exter nal Double Circulator are installed on a station an Antenna Relay an External Preselector and an External Double Circulator Figure 5 shows the kits required when an Antenna Relay External Preselector and External Double Circulator are installed on a station Some of the ancillary equipment listed...

Page 291: ... Cable Kits From Receive Antenna To Receiver Module To Tx RF Connector To Backplane CLN6680 cable and Antenna Relay TKN9132 Antenna Relay External Preselector TKN9135 2 cables 45 cm 18 in 56 cm 22 in 23 cm 9 in Not Connected Note An External Preselector is not used in 800 900 or 350MHz stations ...

Page 292: ...ckplane TKN9132 Antenna Relay Peripheral Tray back Low Pass Filter External Double Circulator To Tx RF Connector 50Ω Load TKN9133 3 cables 30 cm 12 in 30 cm 12 in 76 cm 30 in To Thermistor 61 cm 24 in TKN9136 CLN6680 Antenna Relay and 45 cm 18 in cable If a longer cable 76 cm 30 in is required use the TKN9007 kit along with the Antenna Relay in kit CLN6680 ...

Page 293: ...KN9135 2 cables Peripheral Tray back Low Pass Filter External Double Circulator To Tx RF Connector 50Ω Load 45 cm 18 in 56 cm 22 in 23 cm 9 in TKN9133 3 cables 30 cm 12 in 30 cm 12 in 76 cm 30 in To Thermistor Note An External Preselector is not used in 800 900 or 350MHz stations CLN6680 Antenna Relay and 45 cm 18 in cable If a longer cable 76 cm 30 in is required use the TKN9007 kit along with th...

Page 294: ...ews 2 0312016A26 Table 2 Performance Specifications for Antenna Relay Parameter Specifications Operating Frequency DC to 4 GHz 20 C Maximum Input Power 500 W 1 GHz Coil Specifications Pull in voltage Drop out voltage Resistance 9 5 Vdc maximum 2 Vdc 100 Ω 10 20 C Contact Specifications Type Actuation Pull in time Drop out time SPDT Failsafe break before make 20 ms maximum 20 C 10 ms maximum 20 C I...

Page 295: ...he Power Supply Module Stations equipped with the Antenna Relay module option are shipped with the antenna relay module installed as shown in Figure 6 allowing the RF cables to be routed out from the back of the cabinet or rack 5 MOUNTING LOCATION Figure 6 Mounting Position for Antenna Relay Module Antenna Relay ...

Page 296: ...The relay coil is controlled by the Antenna Relay signal from the Station Control Module to connect either the Receiv er Module or the Power Amplifier Module to a single transmit receive an tenna With the relay de energized the antenna is connected to the Receiver Module To connect the antenna to the Power Amplifier Module the Sta tion Control Module must energize the relay one side of which is co...

Page 297: ...shooting to the module level Refer also to the Maintenance and Troubleshooting section of this manual for detailed troubleshooting procedures for all modules in the station General Description The external Preselector assembly is a 5 pole bandpass filter equipped with tuning slugs to adjust the passband corresponding to the operating frequency s of the station If the external Preselector option is...

Page 298: ...elector input and output connections and the tuning cavities and tuning screws 2 INPUTS AND OUTPUT CONNECTIONS Figure 1 VHF External Preselector Input Output Connectors and Tuning Screws Cavities To Receiver Module To Receive Antenna Connector Tuning Cavities H2 H3 Tuning Screws H4 1 2 3 4 5 H1 ...

Page 299: ...ernal Preselector is installed on a station an External Preselector and an Antenna Relay See the Antenna Relay Cables section for details an External Preselector and an External Double Circulator See the External Double Circulator Cables section for details an External Preselector an Antenna Relay and an External Double Circulator See the Antenna Relay Cables section for details Figure 2 External ...

Page 300: ...are shipped with the External Preselector installed as shown in Figure 3 Table 1 VHF External Preselector Option Complement Option Application Option Contents X265AA MTR2000 Station 132 to 154 MHz TLE6511A VHF Preselector assembly TRN7799A VHF UHF Tuning Kit X265AB MTR2000 Station 150 to 174 MHz TLE6512A VHF Preselector assembly TRN7799A VHF UHF Tuning Kit 3 OPTIONS COMPLEMENT 4 MOUNTING LOCATION ...

Page 301: ...all modules in the station General Description The double circulator assembly consists of two RF circulators contained in a single housing a 50Ω load with heat sink and Low Pass Filter all mounted in the peripheral tray The RF output from the Power Amplifier module connects to the input of the assembly while the output connects to an external low pass filter The low pass filter provides harmonic s...

Page 302: ...t and output connections 2 INPUTS AND OUTPUT CONNECTIONS Figure 1 VHF External Double Circulator Mounted in Peripheral Tray Inputs Outputs Connected To Transmit Antenna Connected to Tx RF Connector Connected through TKN9132 Cable To Backplane Low Pass Filter External Double Circulator 50Ω Load Front of Peripheral Tray ...

Page 303: ...only Figure 2 shows the kits required to install this equipment on a station an External Double Circulator and an External Preselector Figure 3 shows the kits required to install this equipment on a station an External Double Circulator and an Antenna Relay See the Antenna Relay Cables section for details an External Double Circulator an Antenna Relay and an External Preselector See the Antenna Re...

Page 304: ...rnal Double Circulator Only Cable Kits TKN9132 Peripheral Tray back Low Pass Filter External Double Circulator To Tx RF Connector on station 50Ω Load TKN9133 3 cables 30 cm 12 in 30 cm 12 in 76 cm 30 in To Thermistor Not Connected To Transmit Antenna To Backplane P10 on station ...

Page 305: ...n station TKN9132 External Preselector TKN9134 2 cables Peripheral Tray back Low Pass Filter External Double Circulator To Tx RF Connectoron station 50Ω Load 56 cm 22 in TKN9133 3 cables 30 cm 12 in 30 cm 12 in 76 cm 30 in To Thermistor From Receive Antenna Rx RF Connector on station 23 cm 9 in Not Connected To Transmit Antenna To Backplane P10 on station ...

Page 306: ... Contents X676AS X676AT X676AU MTR2000 Station 132 to 174 MHz TYD4010A Low Pass Filter TRN7751A Peripheral Mounting Tray TKN9133A Cables peripheral tray TLN3391A 50Ω Load head sink mounted X676AS MTR2000 Station 132 to 146 MHz TYD4001A Double Circulator assembly X676AT MTR2000 Station 144 to 160 MHz TYD4002A Double Circulator assembly X676AU MTR2000 Station 158 to 174 MHz TYD4003A Double Circulato...

Page 307: ...pecifications for VHF External Double Circulator Parameter Specifications Operating Frequency CLN1207 CLN1208 CLN1209 132 to 146 MHz 144 to 160 MHz 158 to 174 MHz Maximum RF Input Power 400 W Insertion Loss 1 2dB maximum Isolation 45dB Operating Temperature Range 20 C to 70 C Terminations Female N Type Input Output Return Loss 19 1dB minimum Input and Output Impedance 50 Ohms Thermistor Value 20kΩ...

Page 308: ...n a single case each with a 50Ω load Each circulator allows forward RF energy to pass through to the output while routing any reflected RF energy to the corresponding 50Ω load Most of the reflected energy is absorbed by the 50Ω load heat sink mounted connected to the second circulator A thermistor mounted on the head sink provides a variable resistance signal proportional to the heat sink temperat...

Page 309: ...channels A single channel field tuning procedure is provided in this section General Description The duplexer module shown in Figure 1 allows a transmit and receive channel pair to share a common Tx Rx antenna Each duplexer module consists of six resonant cavities three for transmit and three for receive contained in a temperature compensated copper enclosure designed to mount in a standard EIA 48...

Page 310: ...tment Screws and Input Output Connectors High Pass Low Notch Duplexer Input connects to PA output or receiver input whichever has higher frequency Rx Input Tx Output connects to single Rx Tx Antenna Notch Frequency Trimmer Screw 3 screws Pass Frequency Tuning Rods Low Pass High Notch Duplexer Input connects to PA output or receiver input whichever has lower frequency Notch Frequency DualTrimmer Sc...

Page 311: ...gure 4 shows the kits required to install this equipment on a station an External Preselector and a Duplexer Figure 5 shows the kits required to install this equipment on a station an External Double Circulator an External Preselector and a Duplexer Figure 6 shows the kits required to install this equipment on a station Figure 3 Duplexer Only Cable Kits X249CY 2 cables Tx RF Connector on station D...

Page 312: ...nected X249CY 2 cables Rx RF Connector on station Duplexer To Receive Transmit Antenna Lowest Frequency RF i e Rx or Tx Highest Frequency RF i e Rx or Tx Connection on Duplexer Depends on Which Is Higher Rx or Tx To Backplane P10 on station Peripheral Tray back Low Pass Filter External Double Circulator 50Ω Load TKN9133 3 cables 30 cm 12 in 30 cm 12 in 76 cm 30 in ...

Page 313: ...Tx RF Connector on station Duplexer To Receive Transmit Antenna Lowest Frequency RF i e Rx or Tx Highest Frequency RF i e Rx or Tx Connection on Duplexer Depends on Which Is Higher Rx or Tx To Receiver Module External Preselector TKN9134 2 cables 56 cm 22 in 23 cm 9 in Rx RF Connector on station From Receive Antenna ...

Page 314: ...F Connector on station 50Ω Load TKN9133 3 cables 30 cm 12 in 30 cm 12 in 76 cm 30 in To Thermistor Not Connected X249CY 2 cables Rx RF Connector on station Duplexer To Receive Transmit Antenna Lowest Frequency RF i e Rx or Tx Highest Frequency RF i e Rx or Tx Connection on Duplexer Depends on Which Is Higher Rx or Tx To Backplane P10 on station External Preselector 56 cm 22 in 23 cm 9 in TKN9134 2...

Page 315: ...dB maximum Insertion Loss Antenna to Receiver 1 3 dB maximum Frequency Bandwidth vs Frequency Separation Tx to Rx Bandwidth Spacing maximum 1 5 MHz200 kHz 2 5 MHz600 kHz 3 5 MHz800 kHz 4 5 MHz and above1000 kHz Tx Noise Suppression at Rx Frequency 75dB minimum Rx Isolation at Tx Frequency 75 dB minimum Frequency Separation Minimum 1 5 MHz Return Loss 14 dB minimum Maximum Input Power 150 W Tempera...

Page 316: ...s a simplified interconnect diagram showing the receiver and transmitter paths to a single Rx Tx antenna Figure 7 Typical Duplexer Interconnect Diagram 4 TYPICAL INTERCONNECTION 50 Ohm Load Circulator Circulator Low Pass Filter Heat Sink Double Circulator MTR2000 Station Tx Connector Rx Connector Duplexer Module Rx RF To Station Tx RF From Station Peripheral Tray Tx Rx Antenna ...

Page 317: ...ently the re ceive cavity set must be tuned to pass the receive signal and reject the transmit signal This tuning procedure is valid for channels with a bandwidth of 200kHz or less If bandwidth is more than 200kHz the duplexer must be tuned by the service depot Tuning is performed by injecting rf signals and making tuning adjust ments using the tuning rods and trimmer screws while monitoring for m...

Page 318: ...Communications Analyzer or equivalent RF Millivoltmeter Boonton 92E or equivalent RF Signal Generator HP8565 or equivalent 50Ω N type terminator Male to Females N Type T connector UG 107B U or equivalent Slotted screwdriver 2 4mm 3 32 allen wrench Tuning tool thin blade N to N bullet connector UG29A U or equivalent N to BNC Adapter UG349A U N to N Connector UG57B U ...

Page 319: ...for tuning Figure 8 Preliminary Tasks Prior to Tuning Duplexer 1 Disconnect N type connector from each cavity 6 2 For each cavity unscrew and re move trimmer screw dust covers 9 3 Use allen wrench and loosen tuning rod locking screws 6 Trimmer Screw Dust Cover Antenna Connector Low Pass High Notch Cavities High Pass Low Notch Cavities Resonator Tuning Rods ...

Page 320: ... is tuned according to instructions and does not meet specifications for return loss insertion loss and or isolation you must return the duplexer for repair The notch reject frequency will maintain its spacing to the pass frequency when the pass adjustment of a cavity is moved several MHz For example a system operating at 135 and 138MHz which is moved to 138 and 141MHz will require a minimum of re...

Page 321: ...ng Rod Allen Locking Screw 6dB In line pad 50Ω Boonton 92E RF Millivoltmeter Range set to 10dBm 3 Tuning High Pass Resonators 1 Set up test equipment as shown 2 Push or pull tuning rod for cavity 4 to obtain a PEAK reading on the millivoltme ter 3 Use allen wrench and tight en locking screw 4 Repeat steps 1 to 3 for cavities 5 and 6 1 2 3 4 5 6 Cavities Frequency set to Rx or Tx frequency whicheve...

Page 322: ...t Level set to 10dBm Loop Assemblies T Connector 6dB In line pad 50Ω Boonton 92E RF Millivoltmeter Range set to 10dBm 5 Tuning Low Notch Loop Assemblies 1 Set up test equipment as shown 2 Use tuning tool to adjust trimmer screw for cavity 4 to obtain minimum reading on millivoltmeter Adjust trimmer screw to obtain minimum Reduce the range on the millivoltmeter as necessary to reach true minimum re...

Page 323: ...absolute number noted in Step 2 from the number noted in Step 4 The difference should be less than 1 3 dB to meet specification for Insertion Loss 6 Repeat Steps 1 to 5 for Low Pass High Notch cavities with the following exceptions a Set Frequency Generator for Rx or Tx frequency whichever is LOWER b Connect Signal Generator to Low Pass duplexer input cavity 1 c Connect terminator to cavity 6 Freq...

Page 324: ...ed in Step 2 The difference should be higher than 75 dB to meet specification for Isolation 6 Repeat Steps 1 5 for Low Pass High Notch cavities with the fol lowing exceptions a Set Frequency Generator and R2001 for Rx or Tx frequency whichever is HIGHER b Connect Signal Generator to Low Pass duplexer input cavity 1 c Connect terminator to cavity 6 Frequency set to Rx or Tx frequency whichever is L...

Page 325: ... 30 05 Figure 9 VHF Duplexer Field Tuning Procedure Continued 8 Post Tuning Checks 1 Make sure all locking screws are tight Reinstall dust covers on all trimmer capacitors 2 Make sure all tuning rod locking screws 6 are tight Locking Screw 3 ...

Page 326: ...es 38 PL tones and 22 DPL tones standard This section provides a general description cable connection and option information Refer to the ZETRON Repeater Panel Instruction Manual supplied with the panel for panel specifications oper ation installation programming and repair information General Description The Zetron panel shown in Figure 1 is a community repeater panel The Zetron panel can be moun...

Page 327: ...System J5 connector Remove the connector strain relief fuse ac cess plate 2 Connect the Zetron interface cable to the System J5 connector on the MTR2000 Backplane See Figure 2 When installing the Zetron panel ensure that an Electro Static Discharge ESD cable is connected via banana plug to the hole in the front right handle of the station Otherwise the MTR2000 and Zetron panel may be damaged STOP ...

Page 328: ...t support connection to the Zetron panel 4 Re install the connector strain relief fuse access plate 5 Configure the MTR2000 Radio Service Software RSS for operation with the Zetron panel See the RSS Online Help for details 6 Connect the interface cable to the Zetron panel 7 Configure the Zetron panel as indicated in the Zetron Instruction manual 8 Follow the initial power up and adjustment instruc...

Page 329: ...em The interface cable between the Zetron panel and the MTR2000 repeater must also be ordered as a separate item The Zetron Selective Calling option E380 replaces 38 PL tones and 22 DPL tones with 50 PL tones and 18 DPL tones If this option is required it must be ordered as a sub item to the Model 38 Repeater Panel model TDN9946 2 OPTION INFORMATION ...

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