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Motorola MTR2000 T5544 Instruction / Field Service Manual

Base station, repeater and receiver
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MTR2000
TM
Base Station, Repeater
and Receiver
For Analog Conventional,
and Trunking Systems
132 - 174 MHz
Instruction / Field Service Manual
68P81096E30-F

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Summary of Contents for Motorola MTR2000 T5544

  • Page 1 MTR2000 Base Station, Repeater and Receiver For Analog Conventional, and Trunking Systems 132 - 174 MHz Instruction / Field Service Manual 68P81096E30-F...
  • Page 2 • Do not operate the radio transmitters unless all RF connectors are secure and all connectors are properly terminated. • All equipment must be properly grounded in accordance with the Motorola R56 manual Standards and Guidelines for Communications Sites (6881089E50) and specified installation instructions for safe operation.
  • Page 3 Accordingly, any copyrighted Motorola computer programs con- tained in the Motorola products described in this Instruction manual may not be copied or reproduced in any manner without the express written permission of Motorola.
  • Page 4 ENVIRONMENTAL INFORMATION Material Content The material content of the MTR2000 is 16% of the product it replaces. The following table provides a rough estimate of the material content of the station. The ac- tual percentages vary in relation to the station configuration. The power supply is not includ- ed in the percentage of weights since the end-of -life value is dependent on the model of supply used in the station.
  • Page 5 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 household waste. 68P81096E30-F...

  • Page 6: Table Of Contents

    Station Components ..............4 MOTOROLA, MTR2000, Spectra-TAC, DIGITAC, Private Line, Digital Private Line, DVP, Digital Voice Protection, Smart- Zone and Smartnet are trademarks of Motorola Inc.
  • Page 7 Table of Contents Functional Theory Of Operation ............5 Transmitter Circuitry Operation .
  • Page 8 Table of Contents OPERATION STATION OPERATION 68P81096E38 Description ................1 LED Indicators.
  • Page 9 Table of Contents STATION MODULES RECEIVER CIRCUITRY RECEIVER MODULE, 132 to 174 MHz Models CLN1211 and CLN1212 68P81096E19 Description ................1 Inputs and Output Connections .
  • Page 10 Table of Contents STATION CONTROL CIRCUITRY STATION CONTROL MODULE Model CLN1465 68P81096E32 Description ................1 Indicators and Input/Output Connections .
  • Page 11 Table of Contents STATION BACKPLANE BACKPLANE INTERCONNECT BOARD Model CLN1202 68P81096E46 Description ................1 Location of Backplane Connectors .
  • Page 12 Table of Contents 500 W POWER SUPPLY, DC-Only Model CLN1222 68P81096E51 Description ................1 Performance Specifications.
  • Page 13 Table of Contents ANCILLARY EQUIPMENT ANTENNA RELAY MODULE Model CLN6680 68P81096E41 Description ................1 Inputs and Output Connections .
  • Page 14 Table of Contents List of Figures DESCRIPTION DESCRIPTION 68P81096E36 Figure 1. MTR2000 Station ............1 Figure 2.
  • Page 15 Table of Contents OPERATION STATION OPERATION 68P81096E38 Figure 1. Front Panel LEDs ............2 Figure 2.
  • Page 16 Table of Contents STATION MODULES RECEIVER CIRCUITRY RECEIVER MODULE, 132 to 174 MHz Models CLN1211 and CLN1212 68P81096E19 Figure 1. VHF Receiver Module Inputs/Outputs ......... . . 2 Figure 2.
  • Page 17 Table of Contents WIRELINE CIRCUITRY 4 WIRE, EURO WIRELINE INTERFACE BOARD Model CLN1204 68P81096E28 Figure 1. CLN1204 Wireline Interface Board Jumpers and Input/Output Connections ............2 Figure 2.
  • Page 18 Table of Contents STATION BACKPLANE BACKPLANE INTERCONNECT BOARD Model CLN1202 68P81096E46 Figure 1. Backplane Interconnect Board ..........2 Figure 2.
  • Page 19 Table of Contents 250 W POWER SUPPLY, DC-Only Model CLN1223 68P81096E52 Figure 1. Model CLN1223 DC-Only Power Supply Module Input/Output Connections ............3 Figure 2.
  • Page 20 Table of Contents ANCILLARY EQUIPMENT ANTENNA RELAY MODULE Model CLN6680 68P81096E41 Figure 1. Typical Antenna Relay Module – Inputs/Outputs ........2 Figure 2.
  • Page 21 Table of Contents VHF DUPLEXER MODULE Models TYD4031, TYD4032, and TYD4033 68P81085E16 Figure 1. Typical VHF Duplexer Module..........1 Figure 2.
  • Page 22 Table of Contents List of Tables INSTALLATION INSTALLATION 68P81096E37 Table 1. Configuring Auxiliary I/O, Input GPI_14 Function ....... . 25 Table 2.
  • Page 23 Table of Contents STATION MODULES AUXILIARY I/O CIRCUITRY AUXILIARY I/O BOARD Model CLN1206 68P81096E53 Table 1. General Purpose Inputs ............4 Table 2.
  • Page 24 Table of Contents STATION BACKPLANE BACKPLANE INTERCONNECT BOARD Model CLN1202 68P81096E46 Table 1. Assigned Connector Number Vs. Function/Location Information ..... . 4 Table 2.
  • Page 25 Table of Contents ANCILLARY EQUIPMENT ANTENNA RELAY MODULE Model CLN6680 68P81096E41 Table 1. Antenna Relay Option X371AG Complement ........7 Table 2.

  • Page 26: Model & Option Selection Procedure

    MODEL AND OPTION SELECTION PROCEDURE (INCLUDES MODEL/OPTION COMPLEMENTS) The following equipment ordering process is used by the sales representative to equip a VHF station with the proper hardware and firmware for specific system types and customer-defined options and features. This process is described here, showing the structure and contents of the various models and options.
  • Page 27 If the station is a Base Station or a Repeater, the power/frequency option is now selected. The power/frequency option is determined based on the power specified by the customer. The following table shows the available pow- er/frequency options: Output Power Frequency Range –...
  • Page 28 Rack Mounting Hardware X743AF 1.32m (52in) Modular Rack THN6754A Modular Rack, 27-Rack Unit CLN6679A Rack Mounting Hardware X968AA Slides, Motorola Cabinet THN6788A Slide rails for mounting station Slide Rail (for rackmounted station) X346AB Slides, Non-Motorola Cabinet CLN6833A Universal slide rails for mounting station X52AF 76.2cm (30 in) Indoor Cabinet...
  • Page 29 AVAILABLE OPTIONS FOR VHF STATIONS Option Category Option and Complement TYD4031A RF Duplexer (132 to 146MHz) Duplexer Module TYD4032A RF Duplexer (144 to 160MHz) TYD4033A RF Duplexer (158 to 174MHz) X265AA External Preselector Module (132 to 154 MHz) TRN7799A VHF/UHF Tuning Kit X265AB External Preselector Module (150 to 174 MHz) External Preselector...

  • Page 30: Product Maintenance Philosophy

    (FRUs) which, when determined to be faulty, may be quickly and easily re- placed with a known good module to bring the equipment back to normal oper- ation. The faulty module must then be shipped to the Motorola System Support Center for further troubleshooting and repair to the component level.

  • Page 31: Documentation Conventions

    Documentation Conventions Documentation conventions are used in this manual to highlight certain infor- mation. The area to the left of the text column contains key words and graphic symbols which allow the reader to quickly identify desired information. The following text highlight symbols are used: A note symbol indicates important information that helps improve the described function.

  • Page 32: Service And Replacement Modules

    Radio Products Services Division Canada 2200 Galvin Dr. Elgin, Il, International (847) 538-8023 (847) 576-3023 60123, USA Mexico Motorola de Mexico (525) 584-4560 (525) 584-6843 Huatabampo No. 50 APDO Postal 71064 Mexico DF 06700 Asia Motorola Singapore Parts (65) 353-0311...
  • Page 33 Station FRU Components The following Field Replacement Units (FRUs) can be ordered for an MTR2000 VHF station:: Module Description FRU Kit # Receiver Module (132 to 174 MHz) CLN1211 - with varactor preselector Receiver Module (132 to 174 MHz CLN1212 - without varactor preselector Exciter Module (132 to 174 MHz) CLN1233...

  • Page 34: General Safety Information

    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 operation. • All equipment should be serviced only by a qualified technician.

  • Page 35: Performance Specifications

    PERFORMANCE SPECIFICATIONS General Frequency Range: 132 to 174 MHz Number of Channels: Frequency Generation: Synthesized Power Supply Type: Switching Power Supply Input Voltage: 85 to 264Vac (for Models CLN1220 and CLN1221) 180 to 264Vac (for Model DLN6458; used in conjunction with a PFC choke) Power Supply Input Frequency: 47 to 63Hz Current Consumption (typical):...
  • Page 36 +1, –3 dB from 6 dB per octave de-emphasis; 300 to 3000 Hz referenced to 1000 Hz output Audio Distortion: <3 % @ 1000 Hz; 60 % RSD Frequency Stability: 1.5 ppm Due to Motorola’s commitment to quality, all specifications subject to change without notice. 08/06/07 68P81096E30-F xxxiii...

  • Page 37: Glossary

    GLOSSARY OF TERMS AND ACRONYMS Automatic Gain Control Alert tone Audio signal produced by the station, providing feedback to the user. ASIC Application Specific Integrated Circuit Auxiliary. Control Channel Indicate CDCSS Continuous Digital-Controlled Squelch Systems (DPL) CTCSS Continuous Tone-Controlled Squelch Systems (PL) Central Interconnect Terminal.
  • Page 38 Digital Signal Processor, microprocessor specifically designed to perform digi- tal signal processing algorithms. Digital Voice Protection, or Digital Voice Privacy, applies to the Vulcan encryp- tion algorithm and the Motorola product in which it is sold. Electronic Industries Association Telephone circuit signalling lines (Ear/Mouth, Ernie/Mary)
  • Page 39 F to H Failsoft Trunked station mode entered when central controller fails. FFSK Fast FSK Frequency Modulation Field Replaceable Unit. Frequency Shift Keying General Purpose Input. General Purpose Output. HLGT High Level Guard Tone I to L Integrated Circuit intermediate frequency Input or Output Inbound Recovery Board used with the Trunking Controller Interrupt Request.
  • Page 40 M to O MAN_CS Manual Channel Select. Motorola Data Communications. 1200 or 4800 baud data signalling scheme. MISO Master In, Slave Out. Monitor. MOSI Master Out, Slave In. MRTI Microprocessor 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).
  • Page 41 Power Amplifier that transmits final RF signal to transmit antenna Power Factor Correction Private-Line tone squelch; a continuous subaudible tone that is transmitted along with the carrier (A radio that has PL on the receive frequency will require both the presence of carrier and the correct PL tone before it will unmute). Also, if there is PL on the transmit frequency, all transmissions by the radio will be modulated with the PL tone.
  • Page 42 Turn Off Code; alternating binary pattern used by DPL signalling to provide fast muting of the receiving radio. Tone Remote Control Trunking Radio control system which permits efficient frequency utilization and en- hanced control features. Type II Trunking Motorola trunking system which provides extended features. 08/06/07 68P81096E30-F xxxix...
  • Page 43 U, V Ultra High Frequency Very High Frequency Voltage-Controlled Oscillator; an oscillator whereby the frequency of oscilla- tion can be varied by changing a control voltage. Voice Operated Switch; Used with MRTI. VSWR Voltage Standing Wave Ratio. W to Z Wildcard Input Wildcard Output Word Frame Interrupt;...

  • Page 44: Introduction

    DESCRIPTION INTRODUCTION The Motorola MTR2000 Base Station/Repeater provides analog conventional and trunking capabilities in a reliable, software- controlled design. An innovative modular design and microprocessor-controlled Station Control Module (SCM) 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”...

  • Page 45: Electrical Design

    Trunking Capability When equipped for trunking capability, the station can operate in Motorola's Smartnet™ or the most advanced wide-area trunking system – SmartZone. The station can operate as a re- mote voice channel or control channel repeater.

  • Page 46: Summary Of Operating Features

    Description Summary of Operating Features Standard Features The following are a few of the standard features: • FRU maintenance philosophy (reducing down time). • Easily programmed via Radio Service Software (RSS). • Extensive Self-Test Diagnostics and Alarm Reporting through RSS. •...

  • Page 47: Station Components

    Description STATION COMPONENTS Figure 2 shows the modules and components that comprise a station. Wireline Backplane Interface Board Station Control Module Auxiliary I/O Board Top Plate Receiver Module Exciter Module Power Supply Module Fan Cover NOTE: Fans and fan covers are NOTE: Fans and fan covers are only used on high power Power only used on high power Power...

  • Page 48: Functional Theory Of Operation

    Description FUNCTIONAL THEORY OF OPERATION The following functional theory of operation provides an overview of the station circuitry. For a more thorough functional description of a particular module, refer to the STATION MODULES section of the appropriate band-specific Instruction Manual. The block diagram in Figure 3 supports the following functional theory of operation. Transmitter Circuitry Operation Introduction The Transmitter Circuitry comprises two modules, the Exciter Module and the Power Ampli-...
  • Page 49 Description which is derived from power control signals (from the SCM) and high VSWR/thermal pro- tection circuitry on the PA output board. A combination of hardware and software controls are used to regulate the power output level. To set the power and current limits, the SCM provides software control through a D/A con- verter connected to the SPI bus.

  • Page 50: Receiver Circuitry Operation

    Description Receiver Circuitry Operation Introduction The Receiver Circuitry accepts receive rf signals from the site receive antenna, performs fil- tering and dual conversion, and outputs a digitized receive signal to the Station Control Mod- ule. The receiver module utilized may have either an internal varactor-tuned preselector filter, or an external metal preselector filter.

  • Page 51: Station Control Module Operation

    Description Station Control Module Operation Introduction The Station Control Module (SCM) is the microprocessor-based controller for the station. Major components include an MC68356 microprocessor, which combines a 68302 Integrated Multiprotocol Processor (IMP) with a 56002 Digital Signal Processor (DSP), a DSP ASIC de- vice, and several Codec filter devices.

  • Page 52: Wireline Interface Board Operation

    Description Wireline Interface Board Operation Introduction The Wireline Interface Board (WIB) serves as the interface between the customer analog tele- phone lines and the serial data signals of the station. WIBs are offered to handle 2-wire, 4- wire and 8-wire configurations. In general, the WIB processes and routes all wireline audio signals between the station and the landline equipment (such as consoles, modems, etc.).

  • Page 53: Auxiliary I/O Board

    Description Auxiliary I/O Board Operation Introduction The Auxiliary I/O Board serves as the interface between the customer auxiliary equipment and the Station Control Module (SCM). In general, the Auxiliary I/O Board routes all auxil- iary equipment control signals between the SCM and the auxiliary equipment (e.g., a trunking controller).

  • Page 54: Power Supply Module Operation

    Description Power Supply Module Operation Power Supply Modules are offered to handle: • ac or dc input power • low power (250 W) or high power (500 W) station requirements A high power Power Supply Module (500 W) is used in a station with a high power Power Amplifier Module (e.g., rated at 100 W or 75 W output power).
  • Page 55 Description dc Input Power For dc-only operation the 250 W Power Supply Module (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).
  • Page 56 Description THIS PAGE INTENTIONALLY LEFT BLANK 68P81096E36-H 06/28/05...
  • Page 57 Description WIRELINE INTERFACE BOARD (4-WIRE VERSION SHOWN) LINE 1 IN LINE 2 OUT INBOUND OUTBOUND WIRELINE AUDIO WIRELINE AUDIO FROM FROM LINE LINE RECEIVE LANDLINE STATION ANTENNA STATION LANDLINE RECEIVER MODULE RF INPUT/OUTPUT CONNECTOR BRACKET PCM CODEC BUS CODEC #3 (REAR OF STATION) (8 KHz PCM) CUSTOM...
  • Page 58 Description 100 W POWER AMPLIFIER (<600 MHz) TRANSMIT ANTENNA POWER SPI BUS CONTROL CIRCUITRY CIRCULATOR LOW-PASS 10 W DUAL FILTER/ INTERMEDIATE DEVICE DIRECTIONAL MODULE POWER AMP COUPLER 50 OHM LOAD 75 W POWER AMPLIFIER (800 & 900 MHz) POWER SPI BUS EXCITER MODULE CONTROL CIRCUITRY...

  • Page 59: Installation

    • this entire installation section before beginning the actual installation, and • the Motorola Quality Standards Fixed Network Equipment Installation manual, 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.

  • Page 60: Environmental Conditions At Intended Installation Site

    Installation • Proceed to the Optimization procedures to customize the station parameters per customer specifications (e.g., operating frequency, PL, codes, etc.) Regulatory requirements may require the use of an optional high stability refer- ence for some modes of operation. It is recommended that the user check current Note local regulations prior to operation.

  • Page 61: Equipment Ventilation

    Installation Equipment Ventilation The high-power (100/75W) stations are equipped with cooling fans that are used to provided forced convection cooling. When planning the installation, observe the following ventilation guidelines: Mounting the MTR2000 in • Customer-supplied cabinets must be equipped with ventilation slots or open- a Cabinet ings in the front (for air entry) and back or side panels (for air to exit).

  • Page 62: Ac Input Power Requirements

    Installation AC Input Power Requirements The station is equipped with a switching power supply, this assembly operates from 85 Vac to 264 Vac at 47 to 63 Hz ac input power. A standard 3-prong line cord is supplied to connect the power supply to the ac source. It is recommended that a standard 3-wire grounded electrical outlet be used as the ac source.

  • Page 63: Equipment Mounting Methods

    Installation Equipment Mounting Methods The station equipment may be mounted in a rack or cabinet (available as options). The station can be shipped: • …in an floor-mount indoor cabinet. 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.
  • Page 64 Installation Floor-mount Cabinet The physical dimensions for all available floor-mount cabinets are shown in Figure 2. All dimensions are common to all cabinets, except for cabinet height. The cabinet options and associated height are: Cabinet Option Height X52AF 76.2cm (30in) X308AD 1.168m (46in) X180AC...
  • Page 65 Installation 55.9 cm 55.9 cm (22 in) (22 in) 46.5 cm 46.5 cm (18.3 in) (18.3 in) 45.2 cm (17.8 in) FRONT Station 1.524m Support (60 in) Brackets (2) 1.168m (46 in) 76.2 cm (30 in) 0.64 cm (0.25 in) Mounting FRONT VIEW SIDE VIEW...
  • Page 66 Installation Modular Racks The rack options, associated height and available number of racking units are: Number of Rack Option Rack Height Racking Units X741AF 76.2cm (30in) X742AF 1.143m (45in) X743AF 1.32 m (52 in) The physical dimensions and clearances for all available modular racks are shown in Figure 2.
  • Page 67 Installation 1.59cm 20.58cm 76.2cm (0.625in) (8.1in) (3in) 9.22cm 0784384T03 (3.63in) 13.21cm 15.9mm Diam 5.25in Dimension B Dimension B (0.625in) Standoff 13.21cm 3.81cm 17.78cm (5.25in) (1.5in) (7in) 10.97cm (4.375in) Dimension B Dimension A SIDE VIEW 17.78cm (7in) 7.22cm Dimension B Dimension B (2.85in) 38.74cm 9.4mm Diam...

  • Page 68: Site Grounding And Lightning Protection

    Motorola recommends the following reference source: Motorola Quality Standards Fixed Network Equipment Note Installation manual, R56.

  • Page 69: Recommended Tools And Equipment

    Antistatic plastic bags should be kept for future shipping/transporting of station. Note Cabinet Unpacking When a station (mounted in a cabinet) is delivered from Motorola, it arrives in suitable packing materials. If the unpacked equipment is damaged, return it to Motorola in its original packaging.

  • Page 70: Mechanical Installation

    The equipment must be immediately inspected for damage after unpacking, STOP and a report of the extent of any damage made to the transportation company and to Motorola. IMPORTANT Unpacking Stations The station is shipped in a carton, cushioned by four plastic inserts at the corners of the carton.
  • Page 71 Installation 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. 68P81096E37-N 06/28/05...
  • Page 72 Installation Remove cardboard cover from station. Remove antistatic bag. Do not discard bag, it will be reinstalled to protect equipment during Cardboard installation. Cover Antistatic Bag Top Packing Spacer 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 Cut This Band...

  • Page 73: Mounting Procedures

    Installation Mounting Procedures Introduction In most cases, stations are shipped in the selected cabinet or rack (i.e., the station is mounted and cabled), and may be installed by following the procedures below. However, the following three scenarios require special mounting procedures: •...
  • Page 74 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.
  • Page 75 Installation Installing Slide Rail Assembly in a Motorola Cabinet Referring to Figure 4, perform the following procedure to install slide rail option X968AA. On a bench-top, working on Remove the Inner-Slide Rail from the slide assembly (left and right) by de-...
  • Page 76 Installation The left-side slide rail assembly is shown, as viewed from the front of the cabinet. The left Note side is a mirror image of the right side. Cabinet Rail, front Direction That Station Slides Bracket Screws; Cabinet 6mm panhead (4) Rail, rear Outer-Slide Rail Inner-Slide Rail...
  • Page 77 Installation Installing Slide Rail Assembly in a Non-Motorola Cabinet Referring to Figure 5, perform the following procedure to install slide rail option X346AB. On a bench-top, working on Remove the Inner-Slide Rail from the slide assembly (left and right) by de-...
  • Page 78 Installation Install a cage nut in line with Front Cabinet clearance hole in Threaded Strip Rail prior to fitting bracket to the front cabinet rail. This nut is required for mounting Station the station. Mounting The cage nuts are provided with the Screws;...

  • Page 79: Board Configuration

    Installation BOARD CONFIGURATION Most station configuration parameters are altered through the Radio Service Software (RSS) with the exception of some pa- rameters for the following boards, which are configured through jumpers: • 4-Wire Wireline Interface Board (CLN1203), • 4-Wire Euro Wireline Interface Board (CLN1204), •...
  • Page 80 Installation √ = Jumper In P1, P5, P8, P9 A = Pin 1 connects to Pin 2 Reference Country P3, P7 * This setting represents a Impedance standard 600 ohm matching √ √ Australia and is the factory default. 120ηF √...
  • Page 81 Installation Auxiliary I/O Board Jumpers are provided to route inputs and outputs in a specific direction to and from the SCM; the SCM determines the functionality of the inputs and outputs. The board jumpers are shown in Figure 8. GPI_14 is a special input which can be jumpered to be a transistor input or opto isolated.
  • Page 82 Installation Table 1. Configuring Input GPI_14 Function Auxiliary I/O Board Jumpers System Function on GPI_14 Input Type Connector Input Pins (See Note 1) via Optocoupler (E/M sub). (See A29 Opto + 3 - 4, 1 - 2 Note 2) A26 Opto – Fast External PTT* via Transistor 9 - 10, 7 - 8...

  • Page 83: Auxiliary I/O Board

    Installation Table 3. Configuring Output GPO_15 Function Auxiliary I/O Board Jumpers System Connector (J5) Function on GPO_15 Output Type Output Pins via Relay Closure C3, B3 2 - 4 2 - 4 Fast Carrier Detect via Open Collector B21 (see Note 4) 3 - 4 2 - 4 via Relay Closure...

  • Page 84: Electrical Connections

    Installation ELECTRICAL CONNECTIONS After the station equipment has been mechanically installed, electrical connections must be made. This involves making the following connections to: • power supply, • antenna coax cables, • system cables, and • telephone lines. When installing option boards, ensure that an Electro-Static STOP Discharge (ESD) cable is...
  • Page 85 Installation Figure 9 shows the position of the station external connectors located at the rear of the station. Wireline Connector Tx RF Connector Battery Backup and System Rx RF Connector DC Input Connector Connector Trunking / MRTI AC Power Connector Ground Connector (Not used in DC mode)

  • Page 86: Power Supply Connections

    Installation Power Supply Connections AC Input Power Connection Do not apply ac power to the station at this time. Make sure that the circuit breaker associated with the ac outlet is turned to OFF. CAUTION The ac socket-outlet must be installed near the equipment and must be easily accessible.
  • Page 87 Model #010-523-20 (Motorola Model #L1884) for 24V charging sys- tems. These systems were developed specifically for this interface and tested by Motorola for proper station operation. Damage resulting from use of any other charging systems will void the warranty. Refer to qualified sales/ser- vice representative for charger ordering information.
  • Page 88 Installation The station is to be connected to a battery supply that is in accordance with the applicable electrical codes for the end use country; for example, the Na- tional Electric Code ANSI/NFPA No.70 for the U.S. CAUTION Cables are supplied with the charging option. Do not make connections directly from the station to the storage battery.

  • Page 89: Rf Antenna Connections

    Installation RF Antenna Connections The transmit and receive antenna rf connections are made using two separate N- type connectors. 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.

  • Page 90: System Cable Connections

    Installation System Cable Connections System connections are made through one or both of the following connectors: the Trunking/MRTI connector and the System connector. Trunking/MRTI Connector The location of the Trunking/MRTI connector and System connector on the sta- tion rear panel is shown in Figure 9. The following cables are available for trunking system applications: 7.62m (25ft) Trunk Cable, part # 3083765X04 15.24m (50ft) Trunk Cable, part # 3083765X05...

  • Page 91: Table 4. System Connector - Commonly Used Pins

    Installation Table 4. System Connector – Commonly Used Pins Pin Function Pin # Pin Signal Characteristics Name Description RdStat TTL compatible logic output C2, B21, 0.0 to 0.2Vdc with squelched receiver, indicating Rx. Activation status. B3/C3 4.8 to 5.2Vdc with unsquelched receiver. Disc.

  • Page 92: Table 5. Summary Of Auxiliary Inputs/Outputs At The System Connector

    Installation Table 5 provides a summary of the Auxiliary Inputs / Outputs (Wildcard I/O) cur- rently available through the System Connector. Table 5. Summary of Auxiliary Inputs/Outputs at the System Connector Auxiliary I/O System Auxiliary I/O System GPI_… Connector (J5) Pin GPO…...

  • Page 93: Table 6. J5 System Connector, Row A Pins

    Installation Table 6. J5 SYSTEM CONNECTOR, Row A Pins Input/ Pin # Pin Assignment To/From Signal Characteristics Output GPO_8 (WCO) J1-C32, J2-C32 OCO, 100mA, 40V PA Fail (Aux I/O) J1-C31, J2-C31 OCO, 100mA, 40V, active low SCI_CLCK1 J1-C30, J2-C30, J3-C28 Do not use.

  • Page 94: Table 7. J5 System Connector, Row B Pins

    Installation Table 7. J5 SYSTEM CONNECTOR, Row B Pins Input/ Pin # Pin Assignment To/From Signal Characteristics Output RX Lock (Aux I/O) J1-B32, J2-B32 OCO, 100mA, 40V; active high GPO_13 (WCO) J1-B31, J2-B31 OCO, 100mA, 40V RdStat or GPO_15, Note 4 J1-B30, J2-B30 One side of normally open relay, see C3 Carrier Detect Switch...

  • Page 95: Table 8. J5 System Connector, Row C Pins

    Installation Table 8. J5 SYSTEM CONNECTOR, Row C Pins Input/ Pin # Pin Assignment To/From Signal Characteristics Output TX Lock (Aux I/O) J1-A32, J2-A32 OCO, 100mA, 40V; active high Rdstat-R2 Control J1-A31, J2-A31, J3-A26 TTL output, high when unsquelched RdStat or GPO_15, Note 4 J1-A30, J2-A30 Other side of normally open relay, see B3 Failsoft Output (Aux I/O)

  • Page 96: Telephone Line Connections

    Installation Telephone Line Connections Introduction In conventional systems where the station is controlled by a remote console, or in wide area systems utilizing comparators, phone lines must be connected between the station and the remote equipment. The phone lines may carry analog voice, or encoded voice.

  • Page 97: Table 9. Type 5 And "3002" Phone Line Specifications

    Installation Telephone Line Specifications Most telephone companies recognize either “3002” or “Type 5” as designations to define phone line types and associated electrical specifications. Telephone lines meeting the specifications for either of these types are acceptable for use with the station.

  • Page 98: Table 10. Wireline Connector Line Pair Assignments

    Installation Location of Telephone Line Connections Wireline Connector When 4-wire (2 line) telephone connections are required, Line 1 and Line 2 are provided through the 4–position wire wrap terminal connector. Table 10 provides a description of the Wireline connector line pair assignments. Table 10.

  • Page 99: Table 11. System Types Vs. Wireline Circuit Matrix

    Installation System Type vs. Wireline Circuit Table 11 shows which of the four (4) wireline circuits to use for various system types. Stations equipped with a 4–wire Wireline Interface can support a single 4–wire or a single 2–wire telephone line connection. Note Stations equipped with an 8–wire Wireline Interface can for example support a two 4–wire or a single 2–wire telephone line connection.

  • Page 100: Station Maintenance Connections

    Installation Station Maintenance Connections Table 12 provides a description of the maintenance connections located on the front of the Station Control Module. Table 12. Station Maintenance Connections on the SCM Connector Name Function Details 5/10MHz External 5MHz or 10MHz external External Reference signal reference may be used.

  • Page 101: Post Installation Checklist

    Installation POST INSTALLATION CHECKLIST After the station equipment has been mechanically installed and all electrical connections have been made, power may now be applied and the station checked for proper operation. Applying Power Before applying power to the station, make sure all boards are securely seated in the appropriate connectors on the backplane and that all rf cables are securely con- nected.

  • Page 102: Verifying Proper Operation

    Installation Verifying Proper Operation Operation of the station can be verified by: • observing the state of the 4 LEDs located on the front panel • listening to audible alarms, and • exercising radio operation. Some station components can become extremely hot during station opera- tion.
  • Page 103 Installation A major failure renders the station unusable. These failure could be caused by one of the following conditions: Rx or Tx synthesizer out of lock PA failure, Sharp (i.e., 10dB) rf power cutback, self test failure A random flashing of the Station Status LED indicates major failure of the Station Control Module;...
  • Page 104 Installation FailSoft This FailSoft LED indicates the following: LED Color LED State Indicates that the … Yellow Flashing station is in the Trunking system Failsoft mode. This LED is lit when no activity is detected on the transmit data signal from the trunking central controller;...

  • Page 105: Optimization

    Installation OPTIMIZATION After the station and ancillary equipment have been mechanically installed, properly cabled, and power applied, the equip- ment must then be optimized; that is, before placing the station in operation. Optimizing is performed through the Radio Ser- vice Software (RSS), kit number RVN4148. After the station is operational, the station’s codeplug data must be copied to a PC- compatible computer.

  • Page 106: Installing Station Hardware Options

    Installation INSTALLING STATION HARDWARE OPTIONS When a station is ordered with an Antenna Relay or External Preselector option, the respective module is attached to the sta- tion when delivered. When a station is ordered with 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.

  • Page 107: Station Operation 68P81096E38

    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 Control Module. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E38-D...

  • Page 108: Led Indicators

    Station Operation LED Indicators A set of 4 LEDs is located on the station front panel. The position of the 4 LEDs on the front panel is shown in Figure 1. These LEDs indicate the status of the sta- tion during normal operation. Red/Green Green Yellow...

  • Page 109: External Device Connection

    Station Operation External Device Connections Refer to INSTALLATION, Electrical 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.

  • Page 110: Service Connections

    Station Operation Service Connections Service ports and LEDs are located on the front of the Station Control Module (SCM). Figure 2 shows the position of the connectors on the SCM. Front of station with Front Panel removed. 5/10MHz External Service Service Reference Signal Speaker...

  • Page 111: Routine Maintenance 68P81096E39

    Details are provided under the heading Calibrating Station Reference Oscillator. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E39-B All Rights Reserved 09/30/05-UP 1301 E.
  • Page 112 IBM PC (or 100% compatible) equipped with Microsoft Windows 3.1, 95, 98 or 2000, and Motorola Radio Service Software (RSS) application. CALIBRATING STATION REFERENCE OSCILLATOR The circuit devices responsible for determining the station reference frequency exhibit slight variations in their operating characteristics over time (“infant aging”).
  • Page 113 Routine Maintenance Station Reference Calibration Procedure Manual Alignment Procedure It is recommended that the frequency measurement equipment have an accuracy ten times greater than the accuracy required by the measurement. For example, if the frequency must be measured to within ± 5 PPM, the accuracy of the measure- ment equipment should be ±...
  • Page 114 Routine Maintenance Launch the RSS application (under Microsoft Windows 3.1 , 95, 98 or 2000) and access the Alignment panel. Refer to the RSS Startup Manual, 68P81096E15, for complete details on installing and starting the RSS application. With the mouse, press the PTT button on the Station Operation Controls panel to key the station.

  • Page 115: Introduction

    Interpreting front panel LED indicators • Module replacement procedures • Post-repair procedures for performing alignment following replace- ment of defective modules. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E17-E All Rights Reserved 09/30/05-UP 1301 E. Algonquin Road, Schaumburg, IL 60196...

  • Page 116: Recommended Test Equipment

    RECOMMENDED TEST EQUIPMENT The following list of test equipment is recommended to perform troubleshooting procedures on the VHF station and ancillary equipment. List of Test Equipment • Motorola R2001 or R2600 Communications Analyzer ™ ™ • PC running Microsoft Windows 3.1 or Windows...

  • Page 117: Troubleshooting Procedures

    FRUs to quickly bring the station back to normal operation. The faulty FRU must then be shipped to the Motorola System Support Center repair depot for further troubleshooting and repair to the component level.
  • Page 118 Troubleshooting Troubleshooting Overview Introduction Two procedures are provided for troubleshooting the station and ancillary equipment. Each procedure is designed to quickly identify faulty mod- ules, which may then be replaced with known good modules to restore proper station operation. Procedure 1 – Routine Site Visit Functional Checkout Procedure 1 consists of a quick series of non-intrusive tests performed dur- ing a routine site visit.
  • Page 119 Troubleshooting Observe Station Status LED on Station PROCEDURE 1 Front Panel (see Installation section – Post-Installation Checklist – Verifying Proper Operation. Is there 5 Vdc Replace Power Check AC Supply Module. J5-20? Is Station power, and Status LED battery backup Section 4.
  • Page 120 Troubleshooting PROCEDURE 1 Observe Station PA Keyed LED and Status LED on Station Front Panel (see Installation section – Post-Installation Checklist – Verifying Proper Operation. Key station through RSS or with service microphone. Is Station LED has Replace Station Is Station Status red LED failed.
  • Page 121 Troubleshooting An equipment problem is PROCEDURE 2 reported or suspected. NOTE: The RSS Online Help describes Check Error Log Error Log and Diagnostic messages through messages and how to fix a RSS. problem. Run Station Diagnostics through RSS while in receive mode.
  • Page 122 Troubleshooting Interpreting LED Indicators Four LED indicators are provided on the front of the Station Control Mod- ule (viewable on the front panel) that indicate specific operating condi- tions. The service technician may observe these LEDs to obtain a quick status indication of the station equipment.
  • Page 123 Troubleshooting Accessing Station Control Cluster By removing the front panel, the station control cluster is accessible (refer to Figure 4). The station control cluster consists of the: • Exciter Module • Receiver Module • Station Control Module (SCM) Connectors on the Exciter and Receiver modules mate with connectors on either side of the SCM to form the control cluster.
  • Page 124 Troubleshooting Using the Service Mic The Service mic buttons (see Figure 5) provide local control of station op- eration. All of these operating functions can also be controlled through the RSS (through the Station Control area of the Station Operation Controls window).
  • Page 125 Troubleshooting PTT / Intercom Button The function controlled by this button depends on whether or not Inter- com mode has been selected (see above button). When Intercom mode is not selected (i.e., off), key and dekey the sta- tion by pressing the PTT/Intercom button. To key the station trans- mitter, press this button.
  • Page 126 Wireline Board In general, the transmitter circuitry is exercised by injecting and measur- ing signals using a Motorola R2001 or R2600 Communications Analyzer (or equivalent). Incorrect measurement values indicate a faulty module(s); measurement values within the acceptable range verify proper operation of the above listed modules and circuitry.
  • Page 127 Troubleshooting Verifying Transmitter Circuitry Procedure Connect test equipment by performing Steps 1 to 5 shown in Figure 6. In the following steps, suspected faulty modules are ranked in order of Note most to least likelihood. Press the PTT button of the microphone and observe the PA Keyed LED indicator (DSG5602) on the Station Control Module.
  • Page 128 RF port select knob Connect the transmitter antenna to the (pull out) R2001 antenna input. Be sure to pull the RF PORT SELECT knob out and select antenna rf input. Motorola R2001 Communications Analyzer Station - front Remove front panel from Service...
  • Page 129 Troubleshooting If display OK, set up R2001 or R2600 to display modulation. Using the microphone, push the PTT button and speak into the micro- phone. Verify that the display shows an audio signal. • If proper display is not obtained, suspect faulty SCM or Exciter Module.
  • Page 130 Station Control Module In general, the receiver circuitry is exercised by injecting and measuring signals using a Motorola R2001 or R2600 Communications Analyzer (or equivalent). Incorrect measurement values indicate a faulty module(s); measurement values within the acceptable range verify proper operation of the above listed modules and circuitry.
  • Page 131 Troubleshooting Verifying Receiver Circuitry Procedure Connect test equipment by performing Steps 1 to 3 shown in Figure 7. Using the RSS, disable PL and unsquelch the Receiver such that noise is heard through the external speaker. If no audio is heard, sus- pect the following: •...
  • Page 132 Disconnect antenna cable from N-type connector on station. Connect an N-to-N type cable between the station receive input and RF In / Out connector on R2001. Motorola R2001 Communications Analyzer RF In / Out Station - front Connect service speaker to speaker connector on Station Control Module.
  • Page 133 Troubleshooting Station - rear Station Receive Input Motorola R2001 Communications Analyzer RF In / Out Oscilloscope Input If audio is heard, connect the external speaker RJ-45 jack to the Oscilloscope input BNC connector. Station - front External Speaker Connector on SCM Figure 7.

  • Page 134: Module Replacement Procedures

    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 Mod- ules).
  • Page 135 Troubleshooting • All spare modules should be kept in a conductive bag for storage and transporting. • When shipping modules to the repair depot, always pack in conduc- tive material. When wearing a Conductive Wrist Strap, be careful near sources of high voltage.
  • Page 136 Troubleshooting Validating Repairs After replacing a faulty module with a known good module, perform one of the following tests to validate the repair before leaving the site. • If the faulty module was detected as the result of running station di- agnostics via the RSS, run the diagnostics again after the repair is made to ensure that the replacement module passes all diagnostic tests.
  • Page 137 Troubleshooting Ordering Replacement Modules All FRU Modules are ordered through the Americas Parts Division or an- other appropriate facility (see Service and Replacement Modules in front of this manual). Replacing Power Amplifier Module Replacement Procedure Turn off station power by turning off breaker at ac source. If station is equipped with an external preselector, label and discon- nect corresponding RF coax cables to preselector and remove screws securing preselector to station.
  • Page 138 Troubleshooting Integrate the PA Module into the station. 1. Access the appropriate RSS application screen through path: Service –> 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.
  • Page 139 Troubleshooting Replacing Power Supply Module Replacement Procedure Turn off station power by turning off breaker at ac source. If station is equipped with an external preselector, label and discon- nect corresponding RF coax cables to preselector and remove screws securing preselector to station. If station is equipped with an antenna relay, disconnect control cable and remove screws securing relay to station.
  • Page 140 Troubleshooting Replacing Exciter Module Replacement Procedure Turn off station power by turning off breaker at ac source. Remove the station control cluster: 1. Remove module lock screws (2) from front of station control clus- ter. 2. Disconnect BNC connectors on RF cables connecting PA Module to Exciter Module, and Receiver Module to Receive antenna port.
  • Page 141 Troubleshooting Replacing Station Control Module Replacement Procedure If the Station Control Module (SCM) is capable of communicating with the RSS, connect the PC to the RSS port, start the RSS program, and save the codeplug from the station to a file on the PC hard disk. This will allow the codeplug information to be downloaded to the codeplug located on the replacement SCM.
  • Page 142 Troubleshooting ule codeplug. Simply retrieve the file from your archive and follow the instructions in the RSS online help facility for saving data to the codeplug. Calibrate the reference oscillator (station reference) by performing the procedure in the Routine Maintenance section of this manual. Perform the TX Deviation Gain Adjust alignment procedure located in the RSS Service menu online help facility.
  • Page 143 Troubleshooting Replacing Receiver Module Replacement Procedure Turn off station power by turning off breaker at ac source. Remove the station control cluster: 1. Remove module lock screws (2) from front of station control clus- ter. 2. Disconnect BNC connectors on RF cables connecting PA Module to Exciter Module, and Receiver Module to Receive antenna port.
  • Page 144 Troubleshooting Replacing External Preselector Replacement Procedure Turn off station power by turning off breaker at ac source. Disconnect cable to Receive antenna connection and cable to Receiv- er Module. Remove screws (2) securing External Preselector to back of station. Ensure that the correct External Preselector is being installed. Install replacement External Preselector by reconnecting the 2 cables and securing the External Preselector to the station with the 2 screws.
  • Page 145 Troubleshooting Replacing Wireline Interface Board Replacement Procedure Turn off station power by turning off breaker at ac source. Ensure that an ESD cable is connected to the station. Remove Wireline Interface Board from top option card slot by care- fully pulling straight out from the station. Use the Option Card tool (part # 6683334X01) to pull the card out.
  • Page 146 Troubleshooting Replacing Auxiliary I/O Board Replacement Procedure Turn off station power by turning off breaker at ac source. Ensure that an ESD cable is connected to the station. Remove Auxiliary I/O Board from middle (Option Cart #1) or bot- tom (Option Card #2) card slot by carefully pulling straight out from the station.
  • Page 147 Troubleshooting Replacing Backplane Board Replacement Procedure Turn off station power by turning off breaker at ac source. Remove all option boards from the option card slots as described in Replacing Wireline Interface Board. Make sure that all boards are placed on properly grounded anti-static surface. Remove the station control cluster: 1.

  • Page 148: Preselector Field Tuning Procedures

    The following test equipment is required to properly tune the external pre- selector assembly: • RF signal generator – Motorola R2600 or R2001 Communications An- alyzer (see note below), or HP8656A signal generator (or equivalent) • Dip/Peak Monitor – HP435B Power Meter (or equivalent) with...
  • Page 149 Troubleshooting The R2600 Communications Analyzer can both generate and measure si- multaneously. The R2001 may be used for either the generator or the mon- Note itor function, but not both simultaneously. When using R2001 as the signal generator, the RF signal must be taken from the Antenna port. Calculating Proper Alignment Frequency Use one of the following two methods to calculate the alignment frequen- cy to be generated by the signal generator.
  • Page 150 Troubleshooting Preparing Equipment Make sure the preselector assembly is connected to a functional Re- ceiver Module. Using the torque driver and deep well socket, loosen the five tension nuts on the adjustment screws. Detune the preselector by turning the 5 tuning screws (see Figure 9) clockwise (Be careful not to apply more than 0.34Nm (3 in-lb) of torque to the tuning screws in order to prevent warping the preselec- tor cover and housing):...
  • Page 151 Troubleshooting To Receive Antenna Motorola R2001 Communications Analyzer Station Station - rear Receive Input RF In / Out To Dip/Peak Monitor (RF Millivoltmeter or power meter) Tuning Probe Tuning Screw Tension Nut Preselector Assembly To Receiver Module To antenna connector Figure 8.
  • Page 152 Troubleshooting Tuning Procedure Apply ac power to the station power supply (to provide an active 50 Ω termination). Adjust the signal generator to the frequency calculated in the previ- ous steps. Set the level to +5 dBm. When tuning for a peak or dip, turn the tuning screw a 1/2 turn past the Note peak or dip to ensure that tuning is to a true peak or dip.
  • Page 153 Troubleshooting Tuning Screws Tuning Cavities Preselector Assembly To Receiver Module To antenna connector Figure 9. Location of Tuning Screws and Cavity Probe Holes Varactor-Tuned Preselector Tuning Procedure The Receiver Module may contain a varactor-tuned preselector which must be retuned whenever the Receiver Module CLN1211 replaced in the field.
  • Page 154 Troubleshooting Station Receive To Receive Input Antenna Motorola R2001 Communications Analyzer Station - rear RF In / Out Connect negative lead to station ground (chassis or Backplane Voltmeter ground screw). – Connect positive lead to pin C11 of J5. Figure 10.
  • Page 155 Station Control Module • Local Power Supply Regulation – accepts +8V, +10V and +15V inputs and outputs +5V, +10V, and +15V operating voltages. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E19-B All Rights Reserved 09/30/05-UP 1301 E.
  • Page 156 VHF Receiver Module INPUTS AND OUTPUT CONNECTIONS Figure 1 shows the receiver module input and output external connections. Receiver I/O Receive RF Input Connector – To SCM Connector Figure 1. VHF Receiver Module Inputs/Outputs 68P81096E19-B 09/30/05...
  • Page 157 VHF Receiver Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the receiver circuitry at a functional level. The infor- mation is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 158 VHF Receiver Module Receiver Front End Circuitry The receiver RF input is fed from the antenna to the receiver module (or a 5-pole external preselector filter, if specified, which provides highly selec- tive bandpass filtering). The signal is low-pass filtered, routed through a varactor-tuned preselector (if specified), amplified, image filtered, and fed to one input of the first mixer.
  • Page 159 VHF Receiver Module A/D Circuitry Analog signals from various strategic operating points throughout the re- ceiver board are fed to an A/D converter, which converts them to a digital signal and, upon request by the Station Control Module, outputs the signal to the Station Control Module via the SPI bus.
  • Page 160 VHF Receiver Module THIS PAGE INTENTIONALLY LEFT BLANK 68P81096E19-B 09/30/05...
  • Page 161 VHF Receiver Module RF INPUT/OUTPUT COAXIAL CABLE FROM EXTERNAL RECEIVER FRONT END CIRCUITRY CONNECTOR BRACKET N-TYPE CONNECTOR ON PRESELECTOR Jumpered when used (REAR OF STATION) RF INPUT/OUTPUT (optional) with optional External CONNECTOR BRACKET Preselector. TO LO-PASS FILTER N-TYPE MIXER 44.85 MHz CONNECTOR CONNECTORS VARACTOR-TUNED...
  • Page 162 Station Control Module • Local Power Supply Regulation/Filtering – accepts +8V, +10V and +15V inputs and outputs +5V, +10V, and +15V operating voltages. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E22-C All Rights Reserved 09/30/05-UP 1301 E.
  • Page 163 VHF Exciter Module INPUT AND OUTPUT CONNECTIONS Figure 1 shows the exciter module input and output external connections. RF Output to Power Exciter I/O Amplifier Module Connector – To SCM Figure 1. VHF Exciter Module Input/Outputs 68P81096E22-C 09/30/05...
  • Page 164 VHF Exciter Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the exciter circuitry at a functional level. The infor- mation is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 165 VHF Exciter Module The active VCO responds to the dc control voltage and generates the ap- propriate RF signal. This signal is fed through impedance matching, am- plification, and filtering and is output to the RF Switch Circuitry. A sample of the output is returned to the PLL IC to serve as a VCO feedback signal.
  • Page 166 VHF Exciter Module Voltage Regulator/Filter Circuitry The voltage regulator circuitry consists of a +5V regulator and filtering cir- cuitry. The +5V regulator accepts a +8V input (from a regulator on the backplane) and generates a +5V operating voltage for the exciter board cir- cuitry.
  • Page 167 VHF Exciter Module THIS PAGE INTENTIONALLY LEFT BLANK 68P81096E22-C 09/30/05...
  • Page 168 VHF Exciter Module METERING CIRCUITRY REGULATOR CIRCUITRY VARIOUS +15 V +15V SOURCE +15 V SPI BUS (CLOCK & DATA) SIGNALS FROM FOR SYNTH FILTER CONVERTER FROM CHARGE PUMP (METERING) EXCITER BOARD TO BE MONITORED +8 V FROM REGULATOR SOURCE BACKPLANE CHIP (VIA SCM) P3601...
  • Page 169 • Temperature Sense Circuitry – provides variable resistance signal proportional to heat sink temperature; signal is monitored by the PA power control circuitry Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E26-B All Rights Reserved 09/30/05-UP 1301 E.
  • Page 170 VHF 30/40 W Power Amplifier Modules IDENTIFICATION OF INPUTS/OUTPUTS Figure 1 shows the PA Module input and output external connections. Outside View Back Transmit RF Front Output Connector Inside View Front Back Input From PA I/O Connector – To SCM RF Input From Power Supply through Backplane...
  • Page 171 VHF 30/40 W Power Amplifier Modules FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the PA circuitry at a functional level. The informa- tion is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 172 VHF 30/40 W Power Amplifier Modules A/D Converter Circuitry Analog signals from various strategic operating points throughout the PA module are fed to an A/D converter, which converts them 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.
  • Page 173 VHF 30/40 W Power Amplifier Modules CLN1226 (40 W) and CLN1227 (30 W) POWER AMPLIFIER MODULE CIRCULATOR * CIRCULATOR * 14.2 Vdc PA ENABLE * TTD1921 ONLY 30/40 W INPUT BOARD DIRECTIONAL COUPLER/LOW PASS FILTER INTERMEDIATE BUTTERFLY 50 OHM 50 OHM POWER AMPLIFIER MODULE LOAD...
  • Page 174 • Temperature Sense Circuitry – provides variable resistance signal pro- portional to heat sink temperature; signal is monitored by the PA power control circuitry Motorola Inc., 2006 Government & Enterprise Mobility Solutions 68P81096E24-C All Rights Reserved 06/30/06-UP 1301 E.
  • Page 175 VHF 100 W Power Amplifier Module IDENTIFICATION OF INPUTS/OUTPUTS Figure 1 shows the PA Module input and output external connections. Outside View Back Transmit RF Front Output Connector Inside View Front Back Input From PA I/O Connector – To SCM RF Input From Power Supply through Backplane...
  • Page 176 VHF 100 W Power Amplifier Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the PA circuitry at a functional level. The informa- tion is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 177 VHF 100 W Power Amplifier Module A/D Converter Circuitry Analog signals from various strategic operating points throughout the PA module are fed to an A/D converter, which converts them 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.
  • Page 178 VHF 100 W Power Amplifier Module 28.6 Vdc 100 W INPUT BOARD FINAL MODULE DIRECTIONAL COUPLER/LOW PASS FILTER CIRCULATOR DIRECTIONAL COUPLER LOW PASS FILTER 50 OHM LOAD 14.2 Vdc 100 W OUTPUT BOARD SPI BUS (CLOCK & DATA) V_OMNI VOLTAGE V_OMNI TRANSLATOR V_RFLD...
  • Page 179 Processor (DSP) which, along with the support circuitry, provides signal process- ing and operational control over the other station modules. The CLN1465 provides for Motorola Radio-Telephone Interconnect (MRTI) and 6809 trunking capabilities. In addition, the CLN1465 provides a Receiver Signal Strength Indication (RSSI) output and an external reference input for connection to a high stability oscillator.
  • Page 180 Station Control Modules Overview of Circuitry The SCM contains the following circuitry: • Host Microprocessor – that part of the MC68356 which serves as the central controller for the station and the SCM • Non-Volatile Memory – consists of Flash EPROM memory, containing both the system operating software and the station codeplug data •...
  • Page 181 Station Control Modules INDICATORS AND INPUT/OUTPUT CONNECTIONS Figure 1 shows the SCM indicators, and all input and output external connections. Edge Connector – mates to J3 on Backplane Receiver I/O Connector – To Receiver Module Exciter I/OConnector – To Exciter Module Service Microphone Connector 5/10MHz External...
  • Page 182 Station Control Modules FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the SCM at a functional level. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 183 Station Control Modules Host μP Clock Generation The Host μP operates at a 20.4 MHz rate, generated internally from a reference clock. A high-stability VCO in the Station Reference circuitry generates the sta- tion master clock (16.8 MHz) which is divided by 14 (in the DSP ASIC) to 1.2 MHz and routed to the EXTAL pin of the Host μP.
  • Page 184 Station Control Modules SPI I/O Circuitry The Serial Peripheral Interface (SPI) I/O circuitry provides a SPI bus which is used as a general-purpose communications bus to allow the Host μP to communi- cate with other modules in the station. The SPI I/O circuitry also includes an A/ D converter which allows the Host μP to determine (via the SPI bus) the connect- ed optional modules and other station characteristics.
  • Page 185 Station Control Modules A BNC connector (located on the front of the CLN1465) is provided to allow the highly-stable external 5 /10 MHz source to be input to the OSC input of the PLL Note to perform frequency netting. Refer to the Routine Maintenance section in this manual for recommended intervals and procedures for netting the station refer- ence.
  • Page 186 Station Control Modules Inputs to the DSP circuitry are: • Digitized receive signals from the Receiver Module • Audio from handset or microphone connected to appropriate SCM connector (behind the station front panel) • Digitized voice audio/data from Wireline Interface Board via PCM Codec •...
  • Page 187 Station Control Modules DSP ASIC The DSP ASIC operates under control of the DSP to provide a number of func- tions, as follows: • Interfaces with the DSP via the DSP address and data buses and interrupt re- quest lines •...
  • Page 188 Station Control Modules Microphone Microphone audio passes through preamp/bias generator circuitry to a switch which selects mic or MRTI TX Audio, and routes the result to Codec #2. A sep- arate path from the preamp output routes mic audio to the MRTI RX Audio output. This allows mic audio to reach the MRTI output without appearing on the local speaker.
  • Page 189 Station Control Modules Wireline Interface Board Audio Each of the wireline inputs/outputs has a programmable gain stage on the Wireline Interface Board (WIB). Digitized audio is carried to/from the DSP ASIC via the PCM Codec bus. When the line 1/2 pair carries narrow-band audio, the audio is converted to/from digital format by a PCM Codec on the WIB.
  • Page 190 Station Control Modules Refer to the Backplane section of this manual for complete details on the input/ Note output signals which are routed to/from the backplane. Input Circuitry A buffer is provided to route serial station information (SERIAL ID IN) to the Host μP from a serial ID device on the station backplane.
  • Page 191 Station Control Modules +14.2 V and +5V from the power supply (via the backplane) are used as sources for the following supply voltage circuits: • +15 V Regulator Circuitry – voltage doubler circuit accepts +14.2 V input and feeds +15 V regulator to provide +15 V for the Receiver and Exciter modules.
  • Page 192 Station Control Modules SUPPLY VOLTAGE CIRCUITRY VCCA +5 V REGULATOR (ANALOG +5 V) +14.2 V EXTERNAL SPEAKER +14.2 Vdc FILTER FROM POWER SUPPLY CIRCUITRY (VIA BACKPLANE) VOLTAGE +15 V +15 V RX DOUBLER REGULATOR 2.1 MHz FROM DSP ASIC +10 Vdc +10 V RX (FROM BACKPLANE RECEIVER MODULE...
  • Page 193 Station Control Modules HOST MICROPROCESSOR DIGITAL SIGNAL PROCESSOR (DSP) / DSP ASIC DIFFERENTIAL DATA DIFFERENTIAL-TO-TTL FROM AUDIO PROCESSING CONTROL BUS CONVERTER/BUFFER RECEIVER MODULE DSP ADDRESS BUS HOST DATA BUS RX DATA A0 – A3, A15 WIB CODEC(S) D0 – D7 PCM CODEC BUS DSP DATA BUS BUFFER...
  • Page 194 Station Control Modules PARALLEL I/O AUDIO PROCESSING DIGITAL SIGNALS SCCI CS* CIRCUITRY CIRCUITRY ANTENNA RELAY AUDIO SIGNALS SCCI CS* RF RELAY CONTROL SPKR MUTE PA ENABLE HOST DATA BUS OCTAL D FLIP-FLOP TX ENABLE TO EXCITER (U4103) MODULE D0 – D7 ADAPT T* SWITCH ADAPT R*...
  • Page 195 • Line Impedance Selection – jumper fields provide impedance match- ing to satisfy several different wireline telecom specifications. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E28-C All Rights Reserved 09/30/05-UP 1301 E.
  • Page 196 CLN1204 Wireline Interface Board INPUTS AND OUTPUT CONNECTIONS Figure 1 shows the location of the WIB jumpers and all input and output external connections. Mates with J4 of Backplane Interface Board Impedance Matching Jumpers (see Figure 2 for details) Figure 1. CLN1204 Wireline Interface Board Jumpers and Input/Output Connections 68P81096E28-C 09/30/05...
  • Page 197 CLN1204 Wireline Interface Board FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the WIB circuitry at a functional level. The informa- tion is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 198 CLN1204 Wireline Interface Board Description of Audio/Data Signal Paths For 2-wire and 4-wire configurations, phone line connections are made at the wire-trap terminal connector on the station backplane, with the re- quired line impedance match being selected on the WIB. 2-wire audio con- Note nections are made at Line 2 Audio.
  • Page 199 CLN1204 Wireline Interface Board 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). 68P81096E28-C 09/30/05...
  • Page 200 CLN1204 Wireline Interface Board √ = Jumper In P1, P5, P8, P9 A = Pin 1 connects to Pin Reference Country P3, P7 Impedance √ √ Australia * This setting represents a 120nF standard 600 ohm matching √ √ Spain 220Ω...
  • Page 201 CLN1204 Wireline Interface Board The output of the gain adjust circuitry is fed through a 2-pole low-pass fil- ter and into the inputs of two amplifiers. The outputs of the amplifiers are fed to two transistors which are connected in a push-pull configuration to drive the primary of the audio transformer.
  • Page 202 CLN1204 Wireline Interface Board former. The audio signal is induced into the secondary and output to the landline system (via the screw terminal connector) as balanced audio. 68P81096E28-C 09/30/05...
  • Page 203 CLN1204 Wireline Interface Board WL 1 LATCH CS* SPI BUS/ CHIP 2-WIRE VOICE SIGNAL PATHS SELECT FROM MOSI/SPI CLK LANDLINE TO STATION VOICE AUDIO PATH SPI LATCH PCM CODEC/ SPI LATCH BITS – FILTER PRE-EMPHASIS/ GAIN ADJUST – AMPLIFIER AMPLIFIER BUFFER PCM VOICE DE-EMPHASIS...
  • Page 204 The WIB contains the following circuitry: • Audio and Data Circuits – the WIB provides a number of voice and data circuits which interface with the customer phone lines Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E29-F All Rights Reserved 09/30/05-UP 1301 E.
  • Page 205 CLN1203 Wireline Interface Board INPUTS AND OUTPUT CONNECTIONS Figure 1 shows the location of the WIB jumpers and all input and output external connections. Card edge Connector (mates to J4 Backplane) Remote Control Type Select Jumpers (see Figure 2 for details) Figure 1.
  • Page 206 CLN1203 Wireline Interface Board FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the WIB circuitry at a functional level. The informa- tion is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 207 CLN1203 Wireline Interface Board Description of Audio/Data Signal Paths For 2-wire and 4-wire configurations, phone line connections are made at Note the wire-trap terminal connector on the station backplane, providing a standard 600 Ω line matching impedance. 2-wire audio connections are made at Line 2 Audio.
  • Page 208 CLN1203 Wireline Interface Board 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.
  • Page 209 CLN1203 Wireline Interface Board 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 D/A converter in the PCM codec, which takes the PCM data and converts it to an analog audio signal.
  • Page 210 CLN1203 Wireline Interface Board WL 1 LATCH CS* SPI BUS/ CHIP 2-WIRE VOICE SIGNAL PATHS SELECT MOSI/SPI CLK FROM SCM SPI LATCH LANDLINE TO STATION VOICE AUDIO PATH PCM CODEC/ FILTER SPI LATCH BITS – PRE-EMPHASIS/ GAIN ADJUST AMPLIFIER AMPLIFIER –...
  • Page 211 The WIB contains the following circuitry: • Audio and Data Circuits – the WIB provides a number of voice and data circuits which interface with the customer phone lines Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E31-B All Rights Reserved 09/20/05-UP 1301 E.
  • Page 212 CLN1205 Wireline Interface Board INPUTS AND OUTPUT CONNECTIONS Figure 1 shows the location of the WIB jumpers and all input and output external connections. Card edge Connector (mates to J4 Backplane) Figure 1. CLN1205 Wireline Interface Board Input/Output Connections 68P81096E31-B 09/20/05...
  • Page 213 CLN1205 Wireline Interface Board FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the WIB circuitry at a functional level. The informa- tion is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 214 CLN1205 Wireline Interface Board Functional Overview (Refer to Figure 2) Introduction As mentioned previously, the WIB 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.).
  • Page 215 CLN1205 Wireline Interface Board Description of Audio/Data Signal Paths 8-Wire Voice Audio Data Path (Refer to Figure 2, Lines 1 to 4) Note For this 8-wire configuration: phone line1 and line2 connections are made at the wire-trap terminal connector on the station backplane, providing a standard 600 Ω line matching impedance.
  • Page 216 CLN1205 Wireline Interface Board former. The audio signal is induced into the secondary and output to the landline system (via the wire-trap terminal connector on the backplane) as balanced audio. 2-Wire Voice Audio Path (Refer to Figure 3 of the CLN1203 section, Line 2) Voice audio signals sent to/from the station via 2-wire copper pair are processed by the 2-wire audio circuit on the WIB (Line 2 Audio).
  • Page 217 CLN1205 Wireline Interface Board WL 1 LATCH CS* 8-WIRE VOICE SIGNAL PATHS SPI BUS/ CHIP SELECT FROM MOSI/SPI CLK LANDLINE TO STATION VOICE AUDIO DATA PATHS SPI LATCH Note: For 2-WIRE configurations see the CLN1203 WIB Functional Block Diagram, Figure 3. SPI LATCH BITS –...
  • Page 218 (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.
  • Page 219 Auxiliary I/O Board Refer to the RSS Online Help for further detail on the GPIs, GPOs, and jumpers available on the Auxiliary I/O Board. Notes 68P81096E53-C 09/30/05...
  • Page 220 Auxiliary I/O Board INPUT AND OUTPUT CONNECTIONS Figure 1 shows the location of the Auxiliary I/O Board input and output external connections. Mates with J1 or J2 of Backplane Interface Board Refer to Figure 2 for the position of board jumpers.
  • Page 221 Auxiliary I/O Board FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the Auxiliary I/O Board circuitry at a functional lev- el. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 222 Auxiliary I/O Board Input Circuits As shown in the block diagrams, the Auxiliary I/O Board contains SPI In- put Buffers and associated circuitry which provides an input signal path from auxiliary equipment to the station SCM. The input circuitry comprises 16 general purpose inputs (GPI_0 to GPI_15) of which 11 are available;...
  • Page 223 Auxiliary I/O Board When data is routed from auxiliary equipment through the Auxiliary I/O Board to the SCM, it is stored in an SPI Input Buffer. At this time, an option interrupt request (OPT_IRQ) is generated and sent to the SCM, indicating that data is available to be read.
  • Page 224 Auxiliary I/O Board Output Circuits As shown in the block diagrams, the Auxiliary I/O Board contains SPI Output Latches and associated circuitry which provides an output signal path from the station SCM to auxiliary equipment. The Latches are selected by using the OP1/2_CS2 (Chip Select). A serial SPI data block is routed from the Controller which contains the ac- tual 16 Bit Output Pattern and is stored in the SPI Output Latches.
  • Page 225 Auxiliary I/O Board Table 4. SPI Bus Output Circuitry Signals Auxiliary I/O Signal Signal Function Board Description Name Direction Connector P1 MOSI Master Out/ Slave In Pin A7 serial SPI Latch Data Input A low to high transition shifts serial SPI _CLK SPI Bit Clock Pin C8...
  • Page 226 Auxiliary I/O Board Table 5. General Purpose Output Electrical Characteristics Backplane Jumper Output Maximum Auxiliary I/ System Maximum Settings (see Output Type Sink Current Output Function O (P1) Pin # Connector (J5) Voltage (V) Tables 6 & 7) (see Note 1) (mA) Pin# (see Note 2)
  • Page 227 Auxiliary I/O Board Auxiliary I/O Configuration Jumpers Jumpers are provided to route inputs and outputs in a specific direction to and from the SCM; the SCM determines the functionality of the inputs and outputs. The board jumpers are shown in Figure 2. GPI_14 is a special input which can be jumpered to be a transistor input or opto isolated.
  • Page 228 Auxiliary I/O Board Table 6. Configuring Input GPI_14 Function System Auxiliary I/O Board Jumpers Function on Connector Input Type GPI_14 Input Pins A29 Opto + via Optocoupler (E/M sub). 3 - 4, 1 - 2 Fast External PTT* A26 Opto – (See Note 1) via Transistor 9 - 10, 7 - 8...
  • Page 229 Auxiliary I/O Board The shaded areas indicate default manufacturing settings. Note 1: This is an active low; that is, no current to the Opto Input. Notes Note 2: This configuration, with P6 out (PTT when current to the Opto Input) represents the E Signal of 4 wire E&M Trunk Type I Phone Signalling.
  • Page 230 Auxiliary I/O Board AUXILIARY EQUIPMENT TO SCM 16 INPUTS TRANSISTOR BUFFERED SPI BUS GENERAL PURPOSE INPUT INPUTS INPUTS (SYSTEM BUFFERS CONNECTOR) OPTO INTERRUPT ISOLATED GENERATOR INPUTS 16 OUTPUTS TO/FROM OPEN COLLECTOR TRANSISTOR OUTPUTS SPI BUS GENERAL PURPOSE OUTPUT OUTPUTS (SYSTEM LATCHES CONNECTOR) CONTACT...
  • Page 231 I/O option board); the connectors on the other side al- low interface connections between the station and the phone lines, Power Supply, PA control signals, antenna relay, and other communications and maintenance equipment. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E46-E All Rights Reserved 09/30/05-UP 1301 E.
  • Page 232 CLN1202 Station Backplane 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 68P81096E46-E 09/30/05...
  • Page 233 CLN1202 Station Backplane LOCATION OF BACKPLANE CONNECTORS Figure 2 shows the location of the connectors on each side of the Backplane Interconnect Board. Front View Mates With Wireline Interface Board (see Table 4 for Mates With details) Option Board #1 (see Table 5 for details) Mates With...
  • Page 234 CLN1202 Station Backplane BACKPLANE CONNECTORS INFORMATION Each connector on the backplane has been assigned a connector designation number. For rear connectors, the con- nector number is stamped into the metal shield covering the rear of the backplane board. Labels for connectors which accept the plug-in modules are viewable when the front panel is removed.
  • Page 235 CLN1202 Station Backplane Table 2. Backplane Signal Descriptions Signal Name Type Function/Signal Levels 5 VDC Power +5 Vdc from Power Supply (1.5 Amp maximum) 8 VDC Power +8 Vdc from Regulator U102-3 (0.4 Amp maximum) 10 VDC EX Power +10 Vdc from U101-3 to Exciter Module via SCM (0.3 Amp maximum) 10 VDC RX Power +10 Vdc from U101-3 to Receiver Module via SCM (0.75 Amp maximum)
  • Page 236 CLN1202 Station Backplane Table 2. Backplane Signal Descriptions (Continued) Signal Name Type Function/Signal Levels Power Station ground General Purpose Inputs from external equipment (into the station at the System GPI_0 to GPI_15 (WCI) Digital connector, through the Auxiliary I/O board, to the SCM). General Purpose Outputs to external equipment (from the SCM, through the GPO_0 to GPO_15 (WCO) Digital...
  • Page 237 CLN1202 Station Backplane Table 2. Backplane Signal Descriptions (Continued) Signal Name Type Function/Signal Levels Option1 ID Analog Option 1 ID to SCM A/D; module ID determined by specific voltage; 0 to 5 Vdc Option2 ID Analog Option 2 ID to SCM A/D; module ID determined by specific voltage; 0 to 5 Vdc PA A/D CS* Digital From SCM;...
  • Page 238 CLN1202 Station Backplane Table 2. Backplane Signal Descriptions (Continued) Signal Name Type Function/Signal Levels Serial ID Digital Serial ID data to SCM from backplane serial ID device SCM SPI bus clock; Low-to-high transition shifts data; 310 KHz (minimum); SPI CLK Digital standard TTL To SCM from TCC;...
  • Page 239 CLN1202 Station Backplane Table 2. Backplane Signal Descriptions (Continued) Signal Name Type Function/Signal Levels From SCM to WIB codec; 256 KHz (average) master clock generates internal co- Wireline MCLK Codec dec clock and sequencing signals; rising-edge aligned to frame sync clock Wireline1 Latch CS* Digital Chip select for SPI latch on WIB;...
  • Page 240 CLN1202 Station Backplane In Tables 3 to 7… …the "To/From" column provides the source or destination of the signal Note as a connector 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).
  • Page 241 CLN1202 Station Backplane P7 PA CONTROL CONNECTOR J6 WIRELINE TERMINALS Pin No. Signal Pin No. Signal Voltage Forward Line 1– (Tx) PA Enable* Line 1+ (Tx) PA Reset Line 2– (Rx) V Control Line 2+ (Rx) PA D/A CS* SPI CLK MOSI MISO PA A/D CS*...
  • Page 242 CLN1202 Station Backplane Table 3. J5 SYSTEM CONNECTOR Input/ Input/ Input/ Pin # Row A To/From Signal Characteristics Row B To/From Signal Characteristics Row C To/From Signal Characteristics Output Output Output OCO, 100mA, 40V; RX OCO, 100mA, 40V; TX Lock, active GPO_8 (WCO) J1-C32, J2-C32 OCO, 100mA, 40V...
  • Page 243 CLN1202 Station Backplane Table 4. J4 WIRELINE CONNECTOR Pin # Row A Input/Output To/From Row B Input/Output To/From Row C Input/Output To/From Wireline MCLK J3-B6 Spare 5 – – Wireline BCLK J3-C5 – Station ground – Station ground – Station ground 5 VDC P8 pins 7, 8 5 VDC...
  • Page 244 CLN1202 Station Backplane Table 5. J1 OPTION1 CONNECTOR Input/ Input/ Input/ Pin No. Row A To/From Row B To/From Row C To/From Output Output Output Spare – – Spare A12 – J2-B1 Spare A1 – – – Station ground – Station ground –...
  • Page 245 CLN1202 Station Backplane Table 6. J2 OPTION2 CONNECTOR Input/ Input/ Input/ Pin No. Row A To/From Row B To/From Row C To/From Output Output Output Spare A14 – – Spare A12 – J1-B1 Spare A15 – – – Station ground –...
  • Page 246 CLN1202 Station Backplane Table 7. J3 CONTROLLER CONNECTOR Pin # Row A Input/Output To/From Row B Input/Output To/From Row C Input/Output To/From 14.2 VDC P8 pins 3, 4 (thru F1) 14.2 VDC P8 pins 3, 4 (thru F1) 14.2 VDC P8 pins 3, 4 (thru F1) –...
  • Page 247 The power supply is a high-frequency switched mode design, utilizing Pulse Width Modulation (PWM) control, all contained in a metal heat- sink, mounted on the left-hand side of the station. The design provides for output over-voltage/over-current protection. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E33-D All Rights Reserved 09/30/05-UP 1301 E.
  • Page 248 CLN1220/DLN6458 – 500W Power Supply Module The ac input connection is made at the rear of the station via an IEC-type connector keyed to 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.
  • Page 249 CLN1220/DLN6458 – 500W Power Supply Module PERFORMANCE SPECIFICATIONS Table 1 shows the electrical performance specifications for Model CLN1220 & DLN6458 Power Supply Modules. Table 1. CLN1220/DLN6458 Power Supply Module Performance Specifications Specification Parameter CLN1220 DLN6458 Input Voltage Range 85 to 264 Vac 180 to 264 Vac Operating Temperature –30°...
  • Page 250 CLN1220/DLN6458 – 500W Power Supply Module IDENTIFICATION OF INPUTS/OUTPUTS Figure 1 shows the Model CLN1220 and DLN6458 Power Supply Module input and output external connections. Outside View Back Front Battery Backup AC Power Connector Connector Inside View Front Back DC Output To PA Mates To Battery Backup Module...
  • Page 251 CLN1220/DLN6458 – 500W Power Supply Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the power supply circuitry at a functional level. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 252 CLN1220/DLN6458 – 500W Power Supply Module the ac voltage is less than 85 Vrms, but more than the minimum voltage that guaran- tees that all outputs will be in regulation at full load. For the nominal 240 Vac opera- tion, the detect point is less than 170 Vrms but more than the minimum ac input voltage that guarantees that all outputs be in regulation at full load.
  • Page 253 CLN1220/DLN6458 – 500 W Power Supply Module FROM BATT NEG BATTERY INPUT POWER STAGE BATT POS INTERFACE MAIN INPUT AC MAINS INPUT MAIN MAIN INPUT VOLTAGE SWITCHER (85 – 264 Vac, OUTPUT OUTPUT 28.6 Vdc RECTIFIER RANGE POWER 50/60 Hz) FILTER RECTIFIER FILTER...
  • Page 254 An external battery charger system is required to support the battery Note backup feature. Motorola Inc., 2006 68P81011Y31-O Government & Enterprise Mobility Solutions All Rights Reserved 03/10/06-UP 1301 E.
  • Page 255 DLN6622 – 500W Power Supply Module PERFORMANCE SPECIFICATIONS Table 1 shows the electrical performance specifications for Model DLN6622 Power Supply Module Table 1. DLN6622 Power Supply Module AC Performance Specifications Parameter Specification Input Voltage Range 85 to 264 Vac Operating Temperature –30°...
  • Page 256 DLN6622 – 500W Power Supply Module IDENTIFICATION OF INPUTS/OUTPUTS Figure 1 shows the Model DLN6622 Power Supply Module input and output external connections. Outside View Back Front Battery Backup/ AC Power DC Input Connector Connector Inside View Front Back Battery Backup/ DC Output To PA Mates To DC Input...
  • Page 257 DLN6622 – 500W Power Supply Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the power supply circuitry at a functional level. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 258 DLN6622 – 500W Power Supply Module Fan Control Line The supply incorporates temperature sense/fan enable circuitry for con- trolling a 12Vdc fan mounted on the surface of the heatsink assembly. The power supply circuitry senses the internal temperature of the power sup- ply.
  • Page 259 DLN6622 – 500W Power Supply Module THIS PAGE INTENTIONALLY LEFT BLANK 68P81011Y31-O 03/10/06...
  • Page 260 DLN6622 – 500 W Power Supply Module FROM BATT NEG BATTERY INTERFACE BATT POS OUTPUT DC INPUT FILTER I/P SWITCH WITH REVERSE POLARITY FILTER 28.6 Vdc (21.6 – 32 Vdc) CHOKE PROTECTION CIRCUIT TO PA GROUND SVCC MODULE AUXILIARY PVCC POWER SUPPLY 14.2 Vdc...
  • Page 261 An external battery charger system is required to support the battery Note backup feature. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E34-C All Rights Reserved 09/30/05-UP 1301 E.
  • Page 262 CLN1221 – 250W Power Supply Module PERFORMANCE SPECIFICATIONS Table 1 shows the electrical performance specifications for the Model CLN1221 Power Supply Module. Table 1. CLN1221 Power Supply 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...
  • Page 263 CLN1221 – 250W Power Supply Module IDENTIFICATION OF INPUTS/OUTPUTS Figure 1 shows the model CLN1221 Power Supply Module input and output external connections. Outside View Back Front AC Power Battery Backup Connector Connector Inside View Front Back Battery Backup Mates To DC Output To PA Connector Backplane...
  • Page 264 CLN1221 – 250W Power Supply Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the power supply circuitry at a functional level. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 265 CLN1221 – 250 W Power Supply Module FROM BATT POS BATTERY INPUT POWER STAGE BATT NEG INTERFACE MAIN INPUT AC MAINS INPUT MAIN MAIN INPUT VOLTAGE SWITCHER (85 – 264 Vac, OUTPUT OUTPUT 14.2 Vdc RECTIFIER RANGE POWER 50/60 Hz) FILTER RECTIFIER FILTER...
  • Page 266 An external battery charger system is required to support the battery Note backup feature. Motorola Inc., 2006 Government & Enterprise Mobility Solutions 68P81011Y29-O All Rights Reserved 03/10/06-UP 1301 E.
  • Page 267 DLN6624 – 250W Power Supply Module PERFORMANCE SPECIFICATIONS Table 1 shows the electrical performance specifications for the Model DLN6624 Power Supply Module. Table 1. DLN6624 Power Supply Module AC Performance Specifications Parameter Specification Operating Temperature –30° to +60° C (–22° to +140° F) Input Voltage Range 85 to 264 Vac Input Frequency Range...
  • Page 268 DLN6624 – 250W Power Supply Module IDENTIFICATION OF INPUTS/OUTPUTS Figure 1 shows the model DLN6624 Power Supply Module input and output external connections. Outside View Back Front AC Power Battery Backup/ Connector DC Input Connector Inside View Front Back Battery Backup/ Mates To DC Output To PA DC Input...
  • Page 269 DLN6624 – 250W Power Supply Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the power supply circuitry at a functional level. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 270 DLN6624 – 250W Power Supply Module 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). 68P81011Y29-O 03/10/06...
  • Page 271 DLN6624 – 250W Power Supply Module THIS PAGE INTENTIONALLY LEFT BLANK 68P81011Y29-O 03/10/06...
  • Page 272 DLN6624 – 250 W Power Supply Module FROM BATT NEG BATTERY INTERFACE BATT POS OUTPUT DC INPUT FILTER I/P SWITCH WITH REVERSE POLARITY FILTER 14.2 Vdc (10.8 – 16 Vdc) CHOKE PROTECTION CIRCUIT TO PA MODULE GROUND SVCC AUXILIARY PVCC POWER SUPPLY AC MAINS INPUT...
  • Page 273 The dc input connection is made at the rear of the station via an AMP Pow- er Lock connector. Power supply cooling is provided by natural convec- tion via the heatsink which is coplanar with the power supply circuit board assembly. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E51-A All Rights Reserved 09/30/05-UP 1301 E.
  • Page 274 CLN1222 – 500W DC-Only Power Supply Module PERFORMANCE SPECIFICATIONS Table 1 shows the electrical performance specifications for the Model CLN1222 Power Supply Module. Table 1. CLN1222 Power Supply Module Performance Specifications Parameter Specification Operating Temperature –30° to +60° C (–22° to +140° F) Input Voltage Range 21 to 32 Vdc Input AC Ripple...
  • Page 275 CLN1222 – 500W DC-Only Power Supply Module IDENTIFICATION OF INPUTS/OUTPUTS Figure 1 shows the model CLN1222 Power Supply Module input and output external connections. Outside View Back Front DC Power Connector Inside View Front Back DC Output To Mates To PA Module Backplane Figure 1.
  • Page 276 CLN1222 – 500W DC-Only Power Supply Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the power supply circuitry at a functional level. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 277 CLN1222 – 500W DC-Only Power Supply Module INPUT POWER STAGE MAIN INPUT REVERSE DC INPUT OUTPUT 28.6 Vdc VOLTAGE (21 – 32 Vdc) FILTER PROTECTION FILTER TO PA GROUND MODULE 14.2 VOLT CONVERTER OVER- VOLTAGE DETECT 14.2 V RECTIFIER 14.2 Vdc DC/DC SWITCHER FILTER...
  • Page 278 The dc input connection is made at the rear of the station via an AMP Pow- er Lock connector. Power supply cooling is provided by natural convec- tion via the heatsink which is coplanar with the power supply circuit board assembly. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E52-A All Rights Reserved 09/30/05-UP 1301 E.
  • Page 279 CLN1223 – 250W DC-Only Power Supply Module PERFORMANCE SPECIFICATIONS Table 1 shows the electrical performance specifications for the Model CLN1223 Power Supply Module. Table 1. CLN1223 DC-Only 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...
  • Page 280 CLN1223 – 250W DC-Only Power Supply Module IDENTIFICATION OF INPUTS/OUTPUTS Figure 1 shows the model CLN1223 Power Supply Module input and output external connections. Outside View Front Back DC Power Connector Inside View Front Back DC Output To Mates To PA Module Backplane Figure 1.
  • Page 281 CLN1223 – 250W DC-Only Power Supply Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the power supply circuitry at a functional level. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 282 CLN1223 – 250W DC-Only Power Supply Module INPUT POWER STAGE INPUT REVERSE MAIN DC INPUT 14.2 Vdc VOLTAGE OUTPUT (10.8 – 16 Vdc) (Input Dependent) FILTER FILTER PROTECTION TO PA MODULE GROUND 14.2 Vdc 14.2 VOLT INPUT PRE- 5.1 V 5.1 Vdc REGULATOR REGULATOR...
  • Page 283 RECEIVER DESCRIPTION The Motorola MTR2000 Satellite Receiver provides satellite receiver functionality in a reliable, software-controlled design. The innovative modular design and microprocessor-controlled Station Control Module (SCM) allows for superior station flexibility and 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.
  • Page 284 Satellite Receiver Overview of Circuitry The satellite 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 Satellite Receiver INPUT AND OUTPUT CONNECTIONS Figure 2 shows the satellite receiver input and output external connections. Telephone Battery Backup System Rx RF Connector Connector Connector Connector Ground AC Power Screw Connector Figure 2. Satellite Receiver Input/Output Connections 68P81096E44-E 09/28/05...
  • Page 286 Satellite Receiver Satellite Receiver Configuration Typically, the Satellite Receiver connects to either a Spectra-TAC™ comparator or, through a Digital Voice Modem (DVM), to a DigiTAC™ comparator. In the case of a Spectra-TAC system, the only external connection required is audio output from the receiver’s Wireline Interface Board (WIB) which is connected, by dedicated telephone line, to the Spectra-TAC comparator.
  • Page 287 Satellite/Second Receiver RECEIVE ANTENNA WIRELINE INTERFACE BOARD RECEIVER MODULE RF INPUT/OUTPUT (4-WIRE VERSION SHOWN) CONNECTOR BRACKET (REAR OF STATION) LINE 1 IN LINE 2 OUT INBOUND OUTBOUND CUSTOM MIXER WIRELINE AUDIO WIRELINE AUDIO RECEIVER FROM LINE LINE FROM LOW PASS FILTER/ 1ST I-F BANDPASS LANDLINE...
  • Page 288 Power Amplifier Module (transmit) or Receiver Module (receive). The Antenna Relay module is mounted on a flange provided on the rear of the Power Supply Module. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E41-D...
  • Page 289 Antenna Relay Module INPUTS AND OUTPUT CONNECTIONS Figure 1 shows the Antenna Relay module input and output connections. Connects to Station Transmit RF Output (From Power Amplifier Module) Connects to Single Transmit/ Receive Antenna Connects to Peripheral Tray, if so equipped Connects to Station Receive RF Input (To Receiver Module...
  • Page 290 Antenna Relay Module Cables The set of cables used to connect an Antenna Relay to the MTR2000 station depends on what ancillary equipment is connected to the station. A station can be configured with the following ancillary equipment: an Antenna Relay only. Figure 2 shows the kits required when only an Antenna Relay is in- stalled on a station.
  • Page 291 Antenna Relay Module To Tx RF To Receiver CLN6680 Connector Module (cable and Antenna Relay) 56 cm (22 in) 45 cm (18 in) From Receive Antenna TKN9135 Antenna Relay (2 cables) TKN9132 23 cm (9 in) Connected Backplane Note: An External Preselector is not used in 800, 900, or 350MHz stations.
  • Page 292 Antenna Relay Module To Tx RF To Receiver 61 cm Connector Module (24 in) Antenna Relay TKN9136 From Receive Antenna CLN6680 Antenna Relay and 45 cm (18 in) cable TKN9132 If a longer cable, 76 cm (30 in), TKN9007 is required, use the Thermistor kit along with the Antenna Relay in kit CLN6680.
  • Page 293 Antenna Relay Module Note: An External Preselector is not used To Receiver To Tx RF in 800, 900, or 350MHz stations. 56 cm Module Connector (22 in) CLN6680 Antenna Relay Antenna Relay and 45 cm (18 in) cable If a longer cable, 76 cm (30 in), TKN9007 is required, use the From Receive...
  • Page 294 Antenna Relay Module OPTION COMPLEMENT Table 1 shows the contents for the Option X371AG Antenna Relay module. Option Complement Chart Table 1. Antenna Relay Option X371AG Complement Description Motorola Part No. Antenna Relay Module 8082894X02 Control Cable 0112004B03 Mounting Screws (2) 0312016A26 PERFORMANCE SPECIFICATIONS Table 2 shows the electrical performance specifications for the Antenna Relay used in Model CLN6680.
  • Page 295 Antenna Relay Module MOUNTING LOCATION The Antenna Relay Module is installed on a flange on the rear of the 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.
  • Page 296 Antenna Relay Module FUNCTIONAL THEORY OF OPERATION The following theory of operation describes the operation of the Antenna Relay Module at a functional level. The information is presented to give the service technician a basic understanding of the functions performed by the module in order to facilitate maintenance and troubleshooting to the module level.
  • Page 297 Tune the preselector assembly by following the Preselector Field Tun- ing Procedures, located in the Troubleshooting section of this manual. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E43-C All Rights Reserved 09/30/05-UP 1301 E.
  • Page 298 VHF External Preselector Module INPUTS AND OUTPUT CONNECTIONS Figure 1 shows the VHF External Preselector input and output connections and the tuning cavities and tuning screws. Tuning Screws Tuning Cavities To Receive Antenna Connector To Receiver Module Figure 1. VHF External Preselector – Input/Output Connectors and Tuning Screws/Cavities 68P81096E43-C 09/30/05...
  • Page 299 VHF External Preselector Module Cables The set of cables used to connect an External Preselector to the MTR2000 station depends on what ancillary equipment is connected to the station. A station can be configured with the following ancillary equipment: an External Preselector only. Figure 2 shows the kit required when only an External Preselector is installed on a station.
  • Page 300 VHF External Preselector Module OPTIONS COMPLEMENT Table 1 shows the constants for the VHF External Preselector options. Option Complement Chart Table 1. VHF External Preselector Option Complement Option Application Option Contents MTR2000 Station TLE6511A VHF Preselector assembly X265AA 132 to 154 MHz TRN7799A VHF/UHF Tuning Kit MTR2000 Station...
  • Page 301 Note station can cause intermodulation products. The addition of the double circulator improves transmitter intermodulation by 45dB. Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81096E49-C All Rights Reserved 09/30/05-UP 1301 E.
  • Page 302 VHF External Double Circulator Module INPUTS AND OUTPUT CONNECTIONS Figure 1 shows the VHF External Double Circulator input and output connections. Connected to Connected through Tx RF TKN9132 Cable To 50Ω Load Connector Backplane Front of Peripheral Tray External Double Low Pass Filter Connected To Circulator...
  • Page 303 VHF External Double Circulator Module Cables The set of cables used to connect an External Double Circulator to the MTR2000 station depends on what ancillary equipment is connected to the station. A station can be configured with the following ancillary equipment: an External Double Circulator only.
  • Page 304 VHF External Double Circulator Module TKN9132 Connected To Tx RF Connector on station Thermistor To Backplane (P10) on station 76 cm 50Ω Load (30 in) 30 cm (12 in) External Double Circulator TKN9133 (3 cables) Low Pass Filter 30 cm (12 in) To Transmit Peripheral Tray (back)
  • Page 305 VHF External Double Circulator Module To Receiver To Tx RF Module in station Connector on 56 cm station (22 in) TKN9132 Connected Thermistor To Backplane TKN9134 (P10) on station (2 cables) 23 cm (9 in) Rx RF Connector on station From Receive Antenna...
  • Page 306 VHF External Double Circulator Module OPTIONS COMPLEMENT Table 1 shows the contents of the Double Circulator options. Option Complement Chart Table 1. VHF External Double Circulator Options Complement Option Application Option Contents TYD4010A Low Pass Filter X676AS MTR2000 Station TRN7751A Peripheral Mounting Tray X676AT 132 to 174 MHz...
  • Page 307 VHF External Double Circulator Module PERFORMANCE SPECIFICATIONS Table 2 shows the electrical performance specifications for the external Dual Circulators used in Models CLN1207, CLN1208, and CLN1209. Performance Specifications Table 2. Performance Specifications for VHF External Double Circulator Parameter Specifications Operating Frequency CLN1207 132 to 146 MHz CLN1208...
  • Page 308 VHF External Double Circulator Module FUNCTIONAL THEORY OF OPERATION 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.
  • Page 309 (or bandwidths) while providing maximum Tx noise suppression at the Rx frequency and maximum Rx iso- lation at the Tx frequency. Figure 1. Typical VHF Duplexer Module Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81085E16-B All Rights Reserved 09/30/05-UP 1301 E.
  • Page 310 VHF Duplexer Module ADJUSTMENT SCREWS & INPUT/OUTPUT CONNECTORS Figure 2 shows the position of the adjustment screws and input/output rf connectors for the VHF Duplexer module. Pass Frequency Tuning Rods Duplexer Module (top) High-Pass/Low Notch Notch Frequency Rx Input / Tx Output Notch Frequency Low-Pass/High Notch Duplexer Input (connects to...
  • Page 311 VHF Duplexer Module Cables The set of cables used to connect a Duplexer to the MTR2000 station de- pends on what ancillary equipment is connected to the station. A station can be configured with the following ancillary equipment: a Duplexer only. Figure 3 shows the kits required to install this equipment on a station.
  • Page 312 VHF Duplexer Module TKN9132 To Tx RF Connected Rx RF Connector Connector on station on station Thermistor To Backplane (P10) on station 50Ω Load 76 cm (30 in) 30 cm (12 in) External Double Circulator TKN9133 (3 cables) Low Pass Filter 30 cm (12 in) Peripheral Tray...
  • Page 313 VHF Duplexer Module To Receiver Tx RF Connector Module on station 56 cm (22 in) TKN9134 (2 cables) 23 cm (9 in) Rx RF Connector on station From Receive Antenna External Preselector X249CY (2 cables) Connection on Duplexer Depends on Which Is Higher - Rx or Tx Lowest Frequency RF;...
  • Page 314 VHF Duplexer Module 56 cm (22 in) TKN9134 To Tx RF Connected (2 cables) 23 cm Connector (9 in) TKN9132 on station Thermistor To Backplane (P10) on station Rx RF Connector on External Preselector station 50Ω Load 76 cm 30 cm (30 in) (12 in) External Double Circulator...
  • Page 315 VHF Duplexer Module PERFORMANCE SPECIFICATIONS Table 1 shows the electrical performance specifications for the VHF Duplexer module. Performance Specifications Table 1. Performance Specifications for VHF Duplexer Module Parameter Specifications Operating Frequency TYD4031 132 to 146 MHz TYD4032 144 to 160 MHz TYD4033 158 to 174 MHz Insertion Loss...
  • Page 316 VHF Duplexer Module TYPICAL INTERCONNECTION The duplexer module is typically mounted in the same rack or cabinet as the station and peripheral tray (if equipped). Figure 7 provides a simplified interconnect diagram showing the receiver and transmitter paths to a single Rx/Tx antenna.
  • Page 317 VHF Duplexer Module FIELD TUNING PROCEDURE Duplexer modules shipped with stations are tuned at the factory. If a duplexer must be replaced in the field, the unit must be installed and tuned specifically to the transmit and receive frequency pair for the particular station. Field Tuning Overview The duplexer module is comprised of three low-pass/high-notch cavities and three high-pass/low-notch cavities.
  • Page 318 VHF Duplexer Module Required Test Equipment Field tuning of the duplexer module requires the following test equip- ment: • Motorola R2001/R2600 Communications Analyzer (or equivalent) • RF Millivoltmeter (Boonton 92E or equivalent) • RF Signal Generator (HP8565 or equivalent) •...
  • Page 319 VHF Duplexer Module Setting Up for Tuning Duplexer Perform the preliminary tasks shown in Figure 8 to prepare the duplexer module for tuning. Disconnect N-type connector from each cavity (6). For each cavity, unscrew and re- move trimmer screw dust covers (9).
  • Page 320 VHF Duplexer Module Duplexer Tuning Procedure The duplexer field tuning procedures are provided in Figure 9. The proce- dures are most easily performed with the duplexer module removed from the station rack or cabinet. Be sure to make note of the transmit and receive frequencies for the particular station before beginning.
  • Page 321 VHF Duplexer Module To Start Remove cables from the duplexer, noting the position of each cable. Each cable is unique and must be returned to the original position when tuning is complete. Tuning Low Pass Resonators Set up test equipment as Boonton 92E RF shown, connecting to cavity Millivoltmeter...
  • Page 322 VHF Duplexer Module Tuning High Notch Loop Assemblies Set up test equipment as 6dB In-line Boonton 92E RF shown, connecting to cavity pad (50Ω) Millivoltmeter Range set to +10dBm Use tuning tool to adjust Cavities trimmer screws for cavity #1 to obtain minimum reading on millivoltmeter.
  • Page 323 VHF Duplexer Module Verifying Insertion Loss Boonton 92E RF Millivoltmeter Range set to +10dBm Connect test equipment as shown. Observe and note the level in dBm as shown on the millivolt- meter. HP8656B Signal Generator 6dB In-line UG349A N-to- pad (50Ω) BNC Connector Frequency set to Rx or Tx frequency, whichever is HIGHER.
  • Page 324 VHF Duplexer Module Verifying Isolation R2001 Communications Monitor Function. Center frequency set to Tx or Rx frequency, whichever is LOWER Attenuator set to –50dBm Connect test equipment as shown. Observe and note the level in dBm as shown on the R2001 dis- play.
  • Page 325 VHF Duplexer Module Post-Tuning Checks Make sure all locking screws are tight. Reinstall dust covers on all trimmer capacitors. Locking Screw (3) Make sure all tuning rod locking screws (6) are tight. Figure 9. VHF Duplexer Field Tuning Procedure (Continued) 68P81085E16-B 09/30/05...
  • Page 326 The Zetron panel, shown in Figure 1, is a community repeater panel. The Zetron panel can be mounted in a cabinet or rack and is 4.3 cm (1.7 in.) high. Figure 1. Zetron Repeater Tone Panel Motorola Inc., 2005 Government & Enterprise Mobility Solutions 68P81095E71-A All Rights Reserved 09/30/05-UP 1301 E.
  • Page 327 Zetron Repeater Panel Cable An interface cable, model CDN6351 is required to interface the Zetron Model 38 Repeater panel to the MTR2000. This cable is not an option to the MTR2000 station; it must be ordered as a separate item. To connect the Zetron panel to the MTR2000 repeater: On the MTR2000 backplane, remove the screw centered under the System (J5) connector.
  • Page 328 Zetron Repeater Panel The component side of the Zetron interface circuit board should be facing up when connected to the MTR2000. If the components are facing down, this is an older version of the MTR2000 that does not support connection to the Zetron panel. Re-install the connector strain relief / fuse access plate.
  • Page 329 Zetron Repeater Panel OPTION INFORMATION The Zetron Model 38 Repeater Panel is not an option to the MTR2000; it must be ordered as a separate item. 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.

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Mtr2000 t5766Mtr2000 t5731Mtr2000 t5769

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