Codan Radio Communications UT-4E850 MT-4E 800 MHz Transmitter User Manual Manual revision 3

Codan Radio Communications MT-4E 800 MHz Transmitter Manual revision 3

Manual revision 3

© 2007 Daniels Electronics Ltd. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written consent of Daniels Electronics Ltd.The stylized “Daniels Electronics Ltd.” and “DE” logo are registered Canadian and US trademarks of Daniels Electronics Ltd.The stylized “Daniels Electronics Ltd.” and “DE” logo are trademarks of Daniels Electronics Ltd.Document Number:Revision:Date:Daniels Electronics Ltd.Victoria, BCPRINTED IN CANADACovers Models:UR-4E420-00-000 UT-4E450-00-800UR-4E420-A0-000 UT-4E500-00-800UR-4E460-00-000 UT-4E850-00-300UR-4E460-A0-000 VR-4E150-00-000UR-4E500-00-000 VR-4E150-A0-000UR-4E800-A0-000 VT-4E150-00-800UR-4E850-A0-000 MT-4E VHF & UHF RECEIVER & TRANSMITTER INSTRUCTION MANUAL136-174 MHz / 406-470 MHz / 470-520 MHz /799-869 MHzIM08-MT-4E-TXRXProject 1106July 2008
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106 iiThis document has been produced, veried and controlled in accordance with Daniels Electronics’ Quality Management System requirements. Please report any errors or problems to Daniels Electronics’ Customer Service Department.DOCUMENT CONTROLThe user’s authority to operate this equipment could be revoked through any changes or modications not expressly approved by Daniels Electronics Ltd.The AMBE+2™ voice coding Technology embodied in this product is protected by intellectual property rights including patent rights, copyrights and trade secrets of Digital Voice Systems, Inc. This voice coding Technology is licensed solely for use within this Communications Equipment. The user of this Technology is explicitly prohibited from attempting to extract, remove, decompile, reverse engineer, or disassemble the Object Code, or in any other way convert the Object Code into a human-readable form. U.S. Patent Nos. #5,870,405, #5,826,222, #5,754,974, #5,701,390, #5,715,365, #5,649,050, #5,630,011, #5,581,656, #5,517,511, #5,491,772, #5,247,579, #5,226,084 and #5,195,166.The design of this equipment is subject to change due to continuous development. This equipment may incorporate minor changes in detail from the information contained in this manual.This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules and ICES 03. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna.- Increase the separation between the equipment and receiver.- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.- Consult the dealer or an experienced radio / TV technician for help.Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.NOTEDaniels Electronics Ltd. utilizes a three-level revision system. This system enables Daniels to identify the signicance of a revision. Each element of the revision number signies the scope of change as described in the diagram below.DOCUMENT REVISION DEFINITIONMajor Revisions: The result of a major change to product function, process or requirements.Minor Revisions: The result of a minor change to product, process or requirements.Editorial Revisions: The result of typing corrections or changes in formatting, grammar or wording.1-0-0Three-level revision numbers start at 1-0-0 for the rst release. The appropriate element of the revision number is incremented by 1 for each subsequent revision, causing any digits to the right to be reset to 0.For example:If the current revision = 2-1-1 Then the next major revision = 3-0-0If the current revision = 4-3-1 Then the next minor revision = 4-4-0If the current revision = 3-2-2 Then the next editorial revision = 3-2-3The complete revision history is provided at the back of the document.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106 iiiRF Exposure WarningExposure to radio frequency (RF) energy has been identied as a potential environmental factor that must be considered before a radio transmitter can be authorized or licensed. The FCC and IC have therefore developed maximum permissible exposure (MPE) limits for eld strength and power density, listed in FCC 47 CFR 1.1310 and IC RSS-102 Issue 2 Sect 4. The FCC has furthermore determined that determination of compliance with these exposure limits, and preparation of an Environmental Assessment (EA) if the limits are exceeded, is necessary only for facilities, operations and transmitters that fall into certain risk categories, listed in FCC 47 CFR 1.1307 (b), Table 1. All other facilities, operations and transmitters are categorically excluded from making such studies or preparing an EA, except as indicated in FCC 47 CFR 1.1307 (c) and (d).Revised FCC OET Bulletin 65 (Edition 97-01) and IC RSS-102 Issue 2 provide assistance in determining whether a proposed or existing transmitting facility, operation or device complies with RF exposure limits. In accordance with OET Bulletin 65, FCC 47 CFR 1.1307 (b) and RSS-102 Issue Sect 2.5, this Daniels Electronics Ltd. transmitter is categorically excluded from routine evaluation or preparing an EA for RF emissions and this exclusion is sufcient basis for assuming compliance with FCC/IC MPE limits. This exclusion is subject to the limits specied in FCC 47 CFR 1.1307 (b), 1.1310 and IC RSS-102 Issue 2 Sect 4. Daniels Electronics Ltd. has no reason to believe that this excluded transmitter encompasses exceptional characteristics that could cause non-compliance. Notes: • The FCC and IC’s exposure guidelines constitute exposure limits, not emission limits. They are relevant to locations that are accessible to workers or members of the public. Such access can be restricted or controlled by appropriate means (i.e., fences, warning signs, etc.). • The FCC and IC’s limits apply cumulatively to all sources of RF emissions affecting a given site. Sites exceeding these limits are subject to an EA and must provide test reports indicating compliance.RF Safety Guidelines and InformationBase and Repeater radio transmitters are designed to generate and radiate RF energy by means of an external antenna, typically mounted at a signicant height above ground to provide adequate signal coverage. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (EIRP) is not more than that permitted for successful communication. The following antenna installation guidelines are extracted from Appendix A from OET Bulletin 65 and must be adhered to in order to ensure RF exposure compliance:Non-building-mounted Antennas: Height above ground level to lowest point of antenna ≥ 10 m or Power ≤ 1000 W ERP (1640 W EIRP)Building-mounted Antennas: Power ≤ 1000 W ERP (1640 W EIRP)The following RF Safety Guidelines should be observed when working in or around transmitter sites: • Do not work on or around any transmitting antenna while RF power is applied. • Before working on an antenna, disable the appropriate transmitter and ensure a “DO NOT USE” or similar sign is placed on or near the PTT or key-up control. • Assume all antennas are active unless specically indicated otherwise. • Never operate a transmitter with the cover removed. • Ensure all personnel entering a transmitter site have electromagnetic energy awareness training.For more information on RF energy exposure and compliance, please refer to the following: 1. FCC Code of Regulations; 47 CFR 1.1307 and 1.1310. 2. FCC OET Bulletin 65, Edition 97-01, “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields.” 3. http://www.fcc.gov/oet/rfsafety/. 4. IC RSS-102 Issue 2, “Radio Frequency Exposure Compliance of Radio Communication Apparatus.”
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MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106 vContentsGeneral Information ...............................................................1Introduction ................................................................................................1Receiver Performance Specications ........................................................3Transmitter Performance Specications ....................................................5Physical Specications ..............................................................................6Channel and Bank Selection ......................................................................7Radio Service Software Programming ...................................9Introduction ................................................................................................9Hardware Tuning and Troubleshooting .................................11Repair Note .............................................................................................. 11Recommended Test Equipment ............................................................... 12Front Panel RJ45 Jack Pinouts ................................................................ 1448 Pin Motherboard Interface Connector ................................................. 15Receiver Troubleshooting ........................................................................ 16Transmitter Troubleshooting .................................................................... 19System Troubleshooting .......................................................................... 22Radio System Congurations .............................................. 23Repeater .................................................................................................. 23Analog Fixed (Base) Station Interface ..................................................... 24Digital Fixed (Base) Station Interface ...................................................... 24Parts Lists ............................................................................ 25MT-4E Receiver Electrical Parts List ........................................................ 25MT-4E Receiver Mechanical Parts List .................................................... 26MT-4E Receiver P25 Digital Firmware ..................................................... 26MT-4E Receiver and Transmitter Encryption ........................................... 26MT-4E Receiver and Transmitter RSS ..................................................... 26MT-4E Transmitter Electrical Parts List .................................................... 27MT-4E Transmitter Mechanical Parts List ................................................ 27MT-4E Transmitter P25 Digital Firmware ................................................. 27Glossary of Terms ................................................................ 29Contents continued next page
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MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 11061GENERAL INFORMATIONINTRODUCTIONThe MT-4E Receiver and Transmitter are FM radio modules capable of analog operation in 12.5 kHz (narrow band) or 25 kHz (wide band) channels. A rmware upgrade may be purchased to allow P25 digital operation. The VHF modules operate over the band from 136 to 174 MHz and the UHF modules operate over the band from 406 to 470 MHz and 799 to 869 MHz (transmitter) or 406 to 430 MHz, 450 to 470 MHz, 470 to 520 MHz, 799 to 824 MHz and 851 to 869 MHz (receiver). Modular design allows each of the Receiver and Transmitter’s internal modules to be individually assembled and tested, which facilitates construction, tuning, and general maintenance.The MT-4E Receiver and Transmitter combine state of the art performance in a compact modular enclosure for applications ranging from remote mountain top repeaters to congested urban radio environments. Each module is characterized by dependable, low maintenance performance under the most severe environmental conditions.NOTE: The transmitter is not to be operated as a repeater under an existing base station license.The MT-4E Receiver and Transmitter are primarily software controlled radio modules, allowing tuning, programming and maintenance to be done via software service with few hardware adjustments required.The MT-4E series is compatible with all Daniels’ subrack and base station enclosures. It supports a basic analog interface, and may be used in a mixed system with MT-3 and MT-4 series Receivers and Transmitters.P25 Digital Mode When the P25 rmware upgrade is purchased, the MT-4E family of receivers and transmitters may be congured for P25 digital operation, or mixed mode operation. In a repeater conguration, the receiver passes the complete P25 digital voice packet directly to the transmitter so no P25 digital information is lost.All P25 specications, operational description and information contained in this Instruction Manual require the P25 rmware upgrade to function. If the MT-4E Receiver and Transmitter are purchased without the P25 rmware upgrade, the radio will program and operate in analog mode only.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106General Information2Secure CommunicationsThe Receiver and Transmitter are capable of decoding and encoding secure communications if a DES-OFB/AES encryption module is installed. To successfully decode or encode a transmission, the encryption module must be programmed with a valid encryption key using the Motorola KVL 3000+ or KVL 3000 Keyloader in conjunction with a Daniels Keyloader Cable. The Daniels Keyloader cable plugs into the front panel RJ45 jack on the front of the Receiver or Transmitter module. For correct keyloading, the KVL must be setup to operate using ASN mode. ASN Mode is the default mode of the KVL 3000 and an optional mode of the KVL 3000+. Consult the instructions for the Keyloader for details on loading a key. A loaded key may be cleared by pulling rst the CLEAR KEYS 1 then the CLEAR KEYS 2 inputs to ground 500ms apart. Alternately, the CI-BC-4E Base Controller may be used to clear the keys for all modules in a system with a single key press of the switch marked ZEROIZE KEY. The CI-BC-4E Base Controller can also be used to control whether the transmitter outputs a secure or a clear signal.Firmware UpgradesReceiver and Transmitter rmware upgrading is performed with the PC-based Firmware Upgrade software. A type A to 5 pin mini-type B USB cable is used to connect the USB port of an IBM compatible computer to the USB port on the front panel of the Receiver or Transmitter module.Firmware upgrades can be found on the Daniels Electronics Ltd. website at www.danelec.com.MT-4E Receiver Family ModelsThere are eight models in the MT-4E Receiver family covering the 136 to 174 MHz, 406 to 430 MHz, 450 to 470 MHz and 470 to 520 MHz bands while operating in 12.5 kHz, 15 kHz, 25 kHz, or 30 kHz occupied channel bandwidths. The receivers are classied as Class A or Class B. The eight models are as follows:VR-4E150-A0-000 synthesized, 136-174 MHz band, 12.5/15/25/30 kHz channels; Class AUR-4E420-A0-000 synthesized, 406 - 430 MHz band, 12.5/15/25/30 kHz channels; Class AUR-4E460-A0-000 synthesized, 450 - 470 MHz band, 12.5/15/25/30 kHz channels; Class AUR-4E500-A0-000 synthesized, 470 - 520 MHz band, 12.5/15/25/30 kHz channels; Class AVR-4E150-00-000 synthesized, 136-174 MHz band, 12.5/15/25/30 kHz channels; Class BUR-4E420-00-000 synthesized, 406 - 430 MHz band, 12.5/15/25/30 kHz channels; Class BUR-4E460-00-000 synthesized, 450 - 470 MHz band, 12.5/15/25/30 kHz channels; Class BUR-4E500-00-000 synthesized, 470 - 520 MHz band, 12.5/15/25/30 kHz channels; Class BUR-4E800-A0-000 synthesized, 799 - 824 MHz band, 12.5/25 kHz channels; Class AUR-4E850-A0-000 synthesized, 851 - 869 MHz band, 12.5/25 kHz channels; Class A
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106General Information 3RECEIVER PERFORMANCE SPECIFICATIONSGeneralFrequency Range: 136 to 174 MHz / 406 to 430 MHz / 450 to 470 MHz / 470 to 520 MHz799 to 824 MHz / 851 to 869 MHzChannel Spacing: 12.5, 15, 25 & 30 kHz / 12.5 and 25 kHz for 799 to 869 MHzChannel Selection: In 2.5, 5.0 or 6.25 kHz increments selected with Radio Programming Software PackageNumber of Channels: Preset capability for 2 banks of 16 channelsChannel Switching Range: ± 2.0 MHz / unlimited for 799 to 869 MHzCompatibility: MT-3 and MT-4 Series Radio Systems; P25 interoperable*System Impedance: 50 Ω (Type N connector)Frequency Generation: Internal SynthesizerReference Sensitivity: -118 dBm (0.28uV) for 12 dB SINAD -118 dBm (0.28uV) for 5 % BER*Local Oscillator Frequency Stability: ± 1.0 ppm (VHF) / ± 0.5 ppm (UHF) / ± 0.1 ppm 799 to 869 MHZAdjacent Channel Rejection (Selectivity): Class A;< -45 dB; Narrowband Analog < -75 dB; Wideband Analog < -60 dB; Digital* Class B;< -40 dB; Narrowband Analog < -70 dB; Wideband Analog < -60 dB; Digital*Intermodulation Rejection: Class A;< -75 dB; Narrowband and Wideband Analog < -80 dB; Digital* Class B;< -70 dB; Narrowband and Wideband Analog < -70 dB; Digital*Spurious Response Rejection: Class A;< -75 dB; Narrowband Analog < -85 dB; Wideband Analog < -90 dB; Digital* Class B;< -70 dB; Narrowband and Wideband Analog < -70 dB; Digital*Conducted Spurious Output Power: < -95 dBmHum and Noise Ratio: < -34 dB; Narrowband Analog < -40 dB; Wideband AnalogAudio Output: 600 Ω balanced line output (congurable for unbalanced line); De-emphasis or Flat output, +3 dBm maximum levelAudio Distortion: Analog; ≤ 2.0 % (25 °C); ≤ 3.0 % (-30˚C to +60˚C) Digital as per TIA/EIA 102.CAAB*Front Panel Controls: Receiver Power On (Norm) / Off Squelch Disable (Push-button) Analog & Digital Receive LED indicators* P25 Digital specications are applicable only for modules with the P25 Digital rmware upgrade.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106General Information4COR Interface: 150 mA, 50 V open drain power MOSFETSupply Voltage: +13.8 VDC Nominal (range +10 to +17 VDC) +9.5 VDC RegulatedSupply Current: Class A;< 250 mA; with no encryption module installed < 280 mA; with encryption module installedClass B;< 105 mA; with no encryption module installed < 135 mA; with encryption module installedOperating Temperature Range: -30°C to +60°COperating Humidity: 95 % RH (non-condensing) at +25°CCTCSS Decode: Programmable to any of 42 CTCSS tonesDCS Decode: Programmable to any of 83 DCS sequences. Normal or inverted DCS can be selectedIC Certication No.: n/a - Declaration of Conformity (DOC)FCC ID: n/a - Declaration of Conformity (DOC)* P25 Digital specications are applicable only for modules with the P25 Digital rmware upgrade.MT-4E Transmitter Family ModelsThere are three models in the MT-4E Transmitter family covering the 136 to 174 MHz, 406 to 470 MHz bands, 470 to 520 MHz and 799 to 869 MHz. The four models are as follows:VT-4E150-00-800 136–174 MHz band, 0.5–8.0 WUT-4E450-00-800 406–470 MHz band, 0.5–8.0 WUT-4E500-00-800 470–520 MHz band, 0.5–8.0 WUT-4E850-00-300 799–869 MHz band, 0.5–4.0 W
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106General Information 5TRANSMITTER PERFORMANCE SPECIFICATIONSGeneralFrequency Range: 136 to 174 MHz / 406 to 470 MHz / 470 to 520 MHz / 799–869 MHzCarrier Frequency Stability: ± 1.0 ppm (VHF) / ± 0.5 ppm (UHF) / 1 to .1 ppm 799–869 MHzChannel Spacing: 12.5, 15, 25 & 30 kHz / 12.5 & 25 kHz 799–869 MHzChannel Selection: In 2.5, 5.0 or 6.25 kHz increments selected with Radio Programming Software PackageNumber of Channels: Preset capability for 2 banks of 16 channelsCompatibility: MT-3 and MT-4 Series Radio Systems; P25 interoperable*RF Output Power: 0.5 to 8.0 W Continuous / 0.5 – 4.0 W 799–869 MHzEmission Designators: Analog: 11K0F3E (Narrowband); 16K0F3E (Wideband) Digital Paging: 9K2F1D P25 Digital: 8K10F1E (Digital Voice); 8K10F1D (Digital Data)*System Impedance: 50 Ω; Type N connectorDuty Cycle: 100 %; Continuous operationUndesired Emissions: (Adjacent Channel Power Ratio)< -70 dBc; Analog < -70 dBc; Digital* -80 dBc; 799–869 MHzIntermodulation Attenuation: < -45 dB Analog < -45 dB Digital*Undesired Emissions: (Conducted Spurious)< -70 dBc @ 8 W < -80 dBc @4.0 W & 799–869 MHzVSWR Protection: < 20:1 VSWR at all phase anglesOperating Temperature Range: -30˚C to +60˚COperating Humidity: 95 % RH (non-condensing) at +25°COperating Voltage: +13.8 VDC Nominal (range +10 to +17 VDC) +9.5 VDC RegulatedTransmit Current: < 1.7 A at 2 W RF Power Output < 2.8 A at 8 W RF Power Output< 1.8 A @ 4 W RF OutputStand By Current: < 75 mA (no encryption modules installed) < 105 mA (with encryption modules installed)Front Panel Controls: Transmitter power On (Norm) / Off / Key Tx Mic Mode: Analog / Digital Analog & Digital Transmit LED indicatorsPTT Time-Out-Timer: Programmable from 15 to 465 sec. (in increments of 1 sec.) or innity (Default 300 sec.), using Radio Service Software packageAudio Input: Balanced, 600 Ω or optional unbalanced input (600 Ω or 15k Ω selectable input impedance) Audio Frequency Response: Pre-emphasis; +1, -3 dB (300 to 3000 Hz)Audio Deviation Limiting: ± 2.5 kHz Narrowband, ± 5.0 kHz WidebandAudio Distortion: < 3 % THD; 1 kHz tone at 1.5 kHz or 3 kHz deviationFM Hum and Noise Ratio: < -34 dB (0.3 to 3.4 kHz De-Emphasis Off)CTCSS Decode / Encode: Programmable to any of 42 CTCSS tones.DCS Decode / Encode: Programmable to any of 83 DCS sequences. Normal or inverted DCS can be selected. Turnoff code optional.IC Certication No.: 142A-VT4E150 (VHF) / 142A-UT4E450 (UHF)* P25 Digital specications are applicable only for modules with the P25 Digital rmware upgrade.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106General Information6FCC ID: H4JVT-4E150 (VHF) / H4JUT-4E450 (UHF)* P25 Digital specications are applicable only for modules with the P25 Digital rmware upgrade.PHYSICAL SPECIFICATIONSPhysical Dimensions: Width: 7.1 cm (2.8 in)Height: 12.8 cm (5.05 in)Depth: 19 cm (7.5 in)Module Weight: Receiver: 1.2 kg (2.5 lbs.) Transmitter: 1.4 kg (3.0 lbs.) Corrosion Prevention: Anodized aluminum construction Stainless steel hardware Gold plated module connectorsModule Design: • Compact Eurostandard modular design. • Plug-in modules mate with the Daniels standard MT-3 subrack. • Subracks / modules comply with IEEE 1101, DIN 41494 and IEC 297-3 (mechanical size / modular arrangement).External Connections: RF Connection: type N connector located on the module front panel. Digital I/O interface is made via RJ45 modular jack located on the front panel. Programming interface is made via mini-type B USB 1.1 jack located on the front panel. Motherboard Connections (Audio, Power, and Control) are made through a 48 pin, gold plated, type F connector on the rear of the module. User connection made through mated “motherboard” assembly of the radio subrack. Type F standard connector complies with DIN 41612 Level 2 (200 mating cycles, 4 day 10 ppm SO2 gas test with no functional impairment and no change in contact resistance).Handle Text Colour: Red (VHF) / Black (UHF)
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106General Information 7CHANNEL AND BANK SELECTIONFour channel select lines CSEL0-3 are named on the Motherboard, and are brought into the receiver and transmitter modules by the 48 pin rear connector, allowing selection of 16 different channels. These signals are normally pulled low in the receiver and transmitter, but are typically set by jumpers on the Motherboard to select channel 1 by default. In addition, a bank select input is provided to switch between Bank A and B, each of which has 16 channels. The Bank select line normally oats high (+5 V), selecting Bank A, but may be pulled low or high externally.Channel and Bank Select Line MappingThe table below shows the relationship between the states of the bank and channel select lines. Note that the channel select lines follow a binary pattern, but that the binary “0” represents channel 1. The Bank A/B select line normally oats high (+5 V), selecting Bank A, but may be pulled low or high externally via the Bank A/B select line.BANK A/B CSEL3 CSEL2 CSEL1 CSEL0Bank SelectedChannel SelectedHI LO LO LO LO A 1HI LO LO LO HI A 2HI LO LO HI LO A 3HI LO LO HI HI A 4HI LO HI LO LO A 5HI LO HI LO HI A 6HI LO HI HI LO A 7HI LO HI HI HI A 8HI HI LO LO LO A 9HI HI LO LO HI A 10HI HI LO HI LO A 11HI HI LO HI HI A 12HI HI HI LO LO A 13HI HI HI LO HI A 14HI HI HI HI LO A 15HI HI HI HI HI A 16LO LO LO LO LO B 1LO LO LO LO HI B 2LO LO LO HI LO B 3LO LO LO HI HI B 4LO LO HI LO LO B 5LO LO HI LO HI B 6LO LO HI HI LO B 7LO LO HI HI HI B 8LO HI LO LO LO B 9LO HI LO LO HI B 10LO HI LO HI LO B 11LO HI LO HI HI B 12LO HI HI LO LO B 13LO HI HI LO HI B 14LO HI HI HI LO B 15LO HI HI HI HI B 16
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MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 11069connection, open the Receiver or Transmitter Conguration screen by clicking on the button in the Main screen. Click on the Receiver or Transmitter menu, then on the ID button. Click on the ‘Read’ button. The serial number, model number, rmware version and last programmed date should appear in the appropriate elds.Programming settings are divided into two categories, Global options and Channel options. When the Receiver or Transmitter menu is selected from the main screen, both the Global and Channel options for the current channel are displayed. The RSS may be used to save a Receiver or Transmitter conguration to disk. This function allows the user to save a “standard” conguration, and use it as a starting conguration for all modules. An archive of congurations from each radio system in operation may also be kept so that replacement radios can be programmed easily.If the MT-4E Receiver or Transmitter is purchased without the P25 Digital rmware upgrade, the P25 Digital options will not be available in the RSS software.A service mode allows tuning, testing and setup of the Receiver and Transmitter modules. Analog and P25 Digital test modes may be selected by the Radio Service Software, such as Bit Error Rate testing andTest Pattern generation. Adjustments may also be performed in the Service mode, such as audio levels, RF power output and reference oscillator adjustments. The Service mode is covered in the Radio Service Software Tuning Chapter.RADIO SERVICE SOFTWARE PROGRAMMINGINTRODUCTIONReceiver and Transmitter programming is performed with the PC-based Radio Service Software (RSS). A type A to 5 pin mini-type B USB cable (included with the software) is used to connect the USB port of an IBM compatible computer to the USB port on the front panel of the Receiver or Transmitter module. The RSS allows the Receiver or Transmitter to be programmed for operating frequencies, CTCSS and DCS signaling, P25 Digital settings such as NAC and TGID, modulation type and many other parameters.System Recommendations• Microsoft Windows XPRecommended Minimum Specication• Pentium III Processor - 500 MHz• 256 MB Memory (RAM)• 1 GB Free Disk SpaceInstallationThe RSS should install automatically once the CD is inserted. If not, run SETUP.EXE, located on the CD.Note: The Receiver and Transmitter must be programmed separately.Once the connections are made, the Radio Service Software may be run on the computer and the radio switched on. The rst time a Receiver or Transmitter is connected, the USB drivers will need to be installed from the CD using the Hardware Update Wizard. To test the
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MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 110611HARDWARE TUNING AND TROUBLESHOOTINGREPAIR NOTEThe MT-4E Receiver and Transmitter family employ a high percentage of surface mount components which should not be removed or replaced using an ordinary soldering iron. Removal and replacement of surface mount components should be performed only with specically designed surface mount rework and repair stations complete with Electrostatic Discharge (ESD) protection.When removing Surface Mount Solder Jumpers, it is recommended to use solder wick braid in place of vacuum type de-soldering tools. This will help prevent damage to the circuit boards.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting12RECOMMENDED TEST EQUIPMENTAlignment of the Receiver and/or Transmitter requires the following test equipment or its equivalent.Power supply - Regulated +9.5 VDC at 2 A Phillips PM 2811Power Supply - Regulated +13.8 VDC at 2 A Topward TPS-4000Oscilloscope / Multimeter Fluke 97 ScopemeterCurrent Meter: Fluke 75 multimeterCommunications Service Monitor (Analog) Marconi Instruments 2965A or equivalentCommunications Service Monitor (P25 Digital and Analog) IFR 2975 Alignment Tools Daniels A-TK-04It is recommended that the radio communications test set be frequency locked to an external reference (WWVH, GPS, Loran C) so that the high stability local oscillator may be accurately set to within its ± 1 ppm frequency tolerance.Complete Receiver and Transmitter AlignmentA complete Receiver and Transmitter Alignment is performed at the factory and should not be required under normal circumstances. A large change in Receiver or Transmitter operating frequency, as discussed in the next section, or a replacement of major Receiver or Transmitter sub-assembly modules, may require a complete realignment operation.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting 13RECEIVER JUMPERSReceiver Main BoardJumper Default Position Function / DescriptionJU1 OUT When installed enables Clear Keys 1 InputJU2 OUT When installed enables Clear Keys 2 InputJU3 IN When installed enables power to Discriminator Output amplierJU5 OUT When installed bypasses capacitance coupling on the Discriminator outputJU7 OUT When installed enables power to Discriminator Output LPF amplierJU9 X X: 600 Ω Audio Transformer Y: Bypass TransformerJU10 X X: 600 Ω Audio Transformer Y: Bypass TransformerJU11 IN When installed enables power to Balanced Audio Output amplierJU12 OUT When installed increases the gain of Balanced Audio Output amplierJU13 OUT When installed selects 600 Ω resistance to groundJU14 X X: 600 Ω Audio Transformer Y: Bypass TransformerTRANSMITTER JUMPERSTransmitter Main BoardJumper Default Position Function / DescriptionJU1 X X: A/D Front Panel Switch selects transmitter A/D mode Y: A/D External Input selects transmitter A/D modeJU2 YX: MIC OUT connects to Microphone Audio Input Y: MIC IN connects to Microphone Audio inputJU3 X X: 600 Ω Audio Transformer Y: Bypass TransformerJU4 IN When installed selects 600 Ω resistance to groundJU5 IN When installed enables Clear Keys 1 InputJU6 IN When installed enables Clear Keys 2 InputJU7 X X: 600 Ω Audio Transformer Y: Bypass TransformerJU8 X X: 600 Ω Audio Transformer Y: Bypass TransformerJU9 OUT When installed bypasses capacitance coupling on the Subtone / Direct Modulation InputJumpers are shown on the MT-4E Transmitter Jumper and Test Point Locator Illustrations.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting14FRONT PANEL RJ45 JACK PINOUTSA single, 8 position RJ45 jack is mounted on the front panel of the receiver and transmitter. The following are the connections on the RJ45 jack.Pin Signal1CRYPTO MODULE KF2 UNUSED SPARE3ANALOG COR / PTT4 LVDS DATA A5 LVDS DATA B6DIGITAL COR / PTT7 NO CONNECTION8 NO CONNECTION
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting1548 PIN MOTHERBOARD INTERFACE CONNECTORA 48 pin connector is used for interfacing the MT-3 Motherboard to the receiver and transmitter.ReceiverPin Name Pin Name Pin NameD2 Relay Normally Open 1 [O/P] B2 +13.8 VDC [I/P] Z2 +13.8 VDC [I/P]D4 Relay Common 1 [O/P] B4 Receive Secure / Clear* [O/P] Z4 No ConnectD6 Relay Normally Closed 1 [O/P] B6 +9.5 VDC [I/P] Z6 +9.5 VDC [I/P]D8 Relay Normally Closed 2 [O/P] B8 No Connect Z8 No ConnectD10 Relay Common 2 [O/P] B10 Discriminator LPF [O/P] Z10 No ConnectD12 Relay Normally Open 2 [O/P] B12 COR* [O/P] Z12 COR* [O/P]D14 Clear Keys 1* [I/P] B14 Discriminator [O/P] Z14 Squelch Override [I/P]D16 Clear Keys 2* [I/P] B16 No Connect Z16 No Connect D18 No Connect B18 No Connect Z18 Bank A/B* [I/P]D20 Channel Select 0 (LSB) [I/P] B20 SM-3 Speaker Audio [O/P] Z20 No ConnectD22 Channel Select 1 [I/P] B22 No Connect Z22 No ConnectD24 Channel Select 2 [I/P] B24 Signal Strength (RSSI) [O/P] Z24 A/D Receive Mode [O/P]D26 Channel Select 3 (MSB) [I/P] B26 Balanced Audio 1 [O/P] Z26 Balanced Audio 2 [O/P]D28 No Connect B28 Mute* [I/P] Z28 No ConnectD30 No Connect B30 Ground Z30 GroundD32 No Connect B32 Ground Z32 GroundTransmitterPin Name Pin Name Pin NameD2 No Connect B2 +13.8 VDC [I/P] Z2 +13.8 VDC [I/P]D4 No Connect B4 Microphone Audio Output [O/P] Z4 Microphone Audio Input [I/P]D6 No Connect B6 +9.5 VDC [I/P] Z6 +9.5 VDC [I/P]D8 No Connect B8 Isolated Positive PTT [I/P] Z8 Isolated Negative PTT [I/P]D10 No Connect B10 PTT* [I/P] Z10 PTT* [I/P]D12 No Connect B12 Bank A/B* [I/P] Z12 Bank A/B* [I/P]D14 Clear Keys 1* [I/P] B14 PTT* [I/P] Z14 PTT* [I/P]D16 Clear Keys 2* [I/P] B16 No Connect Z16 No Connect D18 No Connect B18 Balanced Audio 2 [I/P] Z18 Balanced Audio 1 [I/P]D20 Channel Select 0 (LSB) [I/P] B20 SM-3 Speaker Audio [I/P] Z20 No ConnectD22 Channel Select 1 [I/P] B22 Subtone [I/P] Z22 No ConnectD24 Channel Select 2 [I/P] B24 PTT Output* [O/P] Z24 Transmit Secure / Clear* [I/P]D26 Channel Select 3 (MSB) [I/P] B26 Forward Power Alarm* [O/P] Z26 High VSWR Alarm* [O/P]D28 No Connect B28 No Connect Z28 A/D Mode Control [I/P]D30 No Connect B30 Ground Z30 GroundD32 No Connect B32 Ground Z32 Ground* Indicates an active low signal.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting16RECEIVER TROUBLESHOOTINGThe receiver is composed of 4 main components; the Receiver Main Board, the Synthesizer Module, the RF Preselector, and the Universal Daughter Board (UDB). An optional Decryption Board can be installed in the Receiver.These steps will help you determine the most likely sub-assembly that contains a fault, and may help you determine what that fault is. The sub-assembly or the entire receiver can be sent back to Daniels Service section for repair. Contact Daniels Service section before returning any product.Before testing, the receiver should be in the subrack, or connected to the subrack by means of an Extender card or kit, and the main power to the system (+13.8 VDC) and the +9.5 VDC regulated supply should be checked via the front panel of the System Regulator. Complete ReceiverFlip the receiver front panel ON/OFF switch from the OFF position to the NORM position and check that the two front panel LEDs both turn ON for less than 5 seconds and then turn OFF. If this is not the case, the most likely fault is on the UDB, on the Synthesizer, or on the Receiver Main Board. At this stage make sure that the UDB and the synthesizer module are properly seated on the Receiver Main Board.Connect the Receiver to the PC with the USB cable and run the Radio Service Software (RSS). Select (P25 or Analog) Receiver, click on Congure, then click on Read to read the Receiver conguration. If the RSS returns “Device Not Responding”, physically inspect the USB cable and connection, check the Daniels USB driver, and check that the USB is recognized by the Device Manager. If the RSS still does not recognize the connection, the most likely fault is on the UDB.Click on Rx ID, then click on Read to read the Receiver ID. Conrm that the Frequency Band in the Synthesizer ID Model Number matches the Frequency Band in the Receiver Global Settings. If the settings do not match, the synthesizer will require replacement, or the programming will need to be changed to match the synthesizer hardware.If the receiver still is not functioning properly the module level check should be conducted in the following order:
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting 17Receiver Main BoardCheck the following test points on the receiver Main Board:Test Point Signal Monitored Typical VoltageTP1 Voltage from motherboard +13.8 VDC line +10 to +17 VDCTP2 Regulated +9.5 VDC from motherboard +9.5 VDC ± 5 %TP9 Switched +13.8 VDC line from front panel switch +10 to +17 VDCTP37 +6.0 VDC supply +6.0 VDC ± 5 %TP38 -6.0 VDC supply -6.0 VDC ± 5 %TP54 +3.3 VDC supply +3.3 VDC ± 5 %TP55 +1.2 VDC supply +1.2 VDC ± 5 %TP56 +1.8 VDC supply +1.8 VDC ± 5 %TP57 +2.5 VDC supply +2.5 VDC ± 5 %TP58 +5.0 VDC supply +5.0 VDC ± 5 %Test Points are shown on the MT-4E Receiver Jumper and Test Point Locator Illustrations.If the test point voltages are within the specied range the following tests further verify that the Receiver Main Board may not be the source of problem.Apply an IF signal of frequency 21.4 MHz at a level of -30 dBm to the Receiver Main Board IF Input SMB connector as shown on the MT-4E Receiver Top Component View (2). If the signal is properly demodulated it proves that the Receiver Main Board and UDB are in working condition. Proceed to the following step:
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting18Synthesizer and UDB ModulesThe Synthesizer module and UDB are bound together through their communication link. At this level of fault diagnosis it is not feasible to isolate the problem between two units.If the receiver front panel ON/OFF switch is set from the OFF position to the NORM position and the two front panel LEDs stay on, check that the Synthesizer and the UDB are properly seated on the Receiver Main Board and check the following test points on the UDB (to access the UDB, the shield lid covering the UDB will need to be removed as shown on the MT-4E Receiver Bottom Component View):Test Point Signal Monitored Typical voltageTP2 Logic power +3.3 VDC ± 5 %TP3 DSP core supply +1.2 VDC ± 5 %TP4 CPLD core supply +1.8 VDC ± 5 %Test Points are shown on the MT-4E Receiver Jumper and Test Point Locator Illustrations.If the UDB voltages are not within the specied tolerances, it is most likely that the Receiver Main Board (that supplies these voltages to the UDB) is faulty or there is a short within the UDB.If the UDB voltages are within the specied tolerances, inject a -70 dBm carrier on the Receiver frequency into the RF Input and check the RSSI Meter reading in the Service section of the RSS. If the RSSI Meter reading is low (< 30), perform the following test to verify that the synthesizer is locked on frequency:Disconnect the LO output SMB connector from the Synthesizer to the RF Preselector, as shown on the MT-4E Receiver Top Component View (1), and connect the Synthesizer LO output to a radio communication test set. Conrm that the synthesizer LO frequency matches the Target Synthesizer RF OUT found in the Reference Oscillator area of the Service section on the RSS. The LO output should be approximately +7 dBm.Check that the LO output (21.4 MHz above or below the receiver frequency / 73.35 MHz @ 800 MHz) of the synthesizer module is within the receiver frequency tolerances of ± 1.0 ppm (VHF) / ± 0.5 ppm (UHF) and ± 0.1 ppm @ 800 mHz, and that the RF frequency will change with programmed channel changes in the RSS. If this is not the case, it is most likely that the synthesizer or the UDB or both are faulty. The fault may be associated with the synthesizer code, the DSP Code or both.Receiver RF PreselectorCheck the +9.5 VDC Power Supply wire to the RF Preselector as shown on the MT-4E Receiver Top Component View (2). The supply voltage should be +9.5 VDC ± 5 %. inject a -30 dBm carrier on the Receiver frequency into the RF Input and check the IF Output of the RF Preselector is 21.4 MHz and 73.35 MHz @ 800 MHz, and it can be demodulated through the communication test set. If this is not the case the synthesizer, the RF Preselector or both are faulty.To further isolate the fault, the LO output as shown on the MT-4E Receiver Top Component View (1) can be disconnected from the Synthesizer, and an LO input can be applied from an external source to the RF Preselector. The frequency of the external LO input should be the Target Synthesizer RF OUT found in the Reference Oscillator area of the Service section on the RSS. Check the 21.4 MHz and 73.35 MHz @ 800 MHz output of the module using a communication test set.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting 19TRANSMITTER TROUBLESHOOTINGThe Transmitter is composed of 4 main components, the Transmitter Main Board, the Synthesizer Module, RF Power Amplier and Universal Daughter Board (UDB). An optional Encryption Board can also be installed in the Transmitter.These steps will help you determine the most likely sub-assembly that contains a fault, and may help you determine what that fault is. The sub-assembly or the entire transmitter can be sent back to Daniels Service section for repair. Contact Daniels Service section before returning any product.Before testing, the transmitter should be in the subrack, or connected to the subrack by means of an Extender card or kit, and the main power to the system (+13.8 VDC) and the +9.5 VDC regulated supply should be checked via the front panel of the System Regulator. The transmitter RF output should be terminated with a 50 Ω load, or communications test set.Complete TransmitterFlip the transmitter front panel NORMAL/OFF/ KEY TX switch from the OFF position to the NORMAL position and check that the two front panel LEDs both turn ON for less than 2 seconds and then turn OFF. If this is not the case, or the transmitter is not functioning properly, the following steps can be taken:Connect the Transmitter to the PC with the USB cable and run the Radio Service Software (RSS). Select (P25 or Analog) Transmitter click on Congure, then click on Read to read the Transmitter conguration. If the RSS returns “Device Not Responding”, physically inspect the USB cable and connection, check the Daniels USB driver, and check the connection through the Device Manager. If the RSS still does not recognize the connection, the most likely fault is on the UDB.Click on Tx ID, then click on Read to read the Transmitter ID. Conrm that the Frequency Band in the Synthesizer ID Model Number matches the Frequency Band in the Transmitter Global Settings. If the settings do not match, the synthesizer will require replacement, or the programming will need to be changed to match the synthesizer hardware.If the transmitter still is not functioning properly the module level check should be conducted in the following order:
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting20Transmitter Main BoardCheck the following test points on the Transmitter Main Board:Test Point Signal Monitored Typical voltageTP1 Voltage from motherboard +13.8 VDC line +10 to +17 VDCTP2 Regulated +9.5 VDC from motherboard +9.5 VDC ± 5 %TP3 USB connector power +3.0 VDC or +5.0 VDCTP4 Switched +13.8 VDC line from front panel switch +10 to +17 VDCTest Points are shown on the MT-4E Transmitter Jumper and Test Point Locator Illustrations.If the test point voltages are within the specied range, it is most likely that the Transmitter Main Board is not the source of problem. Proceed to the following step:Synthesizer and UDB ModulesThe Synthesizer module and UDB are bound together through their communication link. At this level of fault diagnosis it is not feasible to isolate the problem between two units.If the transmitter front panel NORMAL/OFF/ KEY TX switch is set from the OFF position to the NORMAL position and the two front panel LEDs stay on, check that the Synthesizer and the UDB are properly seated on the Transmitter Main Board and check the following test points on the UDB (to access the UDB, the Amplifer sub-assembly and the shield lid covering the UDB will need to be removed as shown on the MT-4E Transmitter Amplier Removed View):Test Point Signal Monitored Typical VoltageTP2 Logic power +3.3 VDC ± 5 %TP3 DSP core supply +1.2 VDC ± 5 %TP4 CPLD core supply +1.8 VDC ± 5 %Test Points are shown on the MT-4E Transmitter Jumper and Test Point Locator Illustrations.If the UDB voltages are not within the specied tolerances, the Transmitter Main Board (that supplies these voltages to the UDB) is most likely faulty. If the UDB voltages are within the specied tolerances, it is most likely that the synthesizer or the UDB or both are faulty. The fault may be associated with the synthesizer code, the DSP Code or both.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting 21If the transmitter front panel NORMAL/OFF/ KEY TX switch is set from the OFF position to the NORMAL position and the two front panel LEDs both turn ON for less than 2 seconds and then turn OFF and the RF output power control is set at its maximum in the Power Levels area of the Service section on the RSS, but the RF output power is considerably less than 8 W and 4 W @ 800 MHz:check that the synthesizer Reference Oscillator is set to internal reference in the System Setup; Jumper Settings area of the Service section on the RSS.check that the output of the synthesizer module on the RF cable as shown on the MT-4E Transmitter Bottom Component View is 0 dBm (± 2 dBm) and that the RF frequency will change with programmed channel changes in the RSS. If this is not the case, it is most likely that the synthesizer or the UDB or both are faulty. The fault may be associated with the synthesizer code, the DSP Code or both.Transmitter AmplierSet the front panel switch on the transmitter to KEY TX and check that the Transmitter Output Power is set appropriately. The output power can be adjusted in the Power Levels area of the Service section on the RSS.Check the following pins on connector J1 (while the transmitter is keyed):Pin Signal Monitored Typical voltage1RF Enable / Power Control (+0.5 to +3.0 VDC corresponds to 0.5 to 8.0 W RF Power Output)+0.5 to +3.0 VDC2 Regulated +9.5 VDC from motherboard +9.5 VDC ± 5 %3 Voltage from motherboard +13.8 VDC line +10 to +17 VDCPins are shown on the MT-4E Transmitter Bottom Component View.If Pin 1 is not within tolerance, the most likely fault is in the UDB or Synthesizer module. If Pins 1, 2 and 3 are within the specied tolerances, and there is no RF output power, the most likely fault is in the Amplier.To test the RF power amplier sub-assembly, set the output power to maximum, using the Power Level Adjustments in the Service mode of the RSS software and drive the input of the amplier with a 0 dBm RF signal. Check that the RF power output is 8.0 W and 4.0 W @ 800 MHz when the front panel switch is set to KEY TX.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Hardware Tuning and Troubleshooting22SYSTEM TROUBLESHOOTINGIf the radio system is not receiving or transmitting on the right frequency, check the Channel and Bank select lines of the Receiver and Transmitter modules. The Motherboard has jumpers that allow one of 16 channels to be selected on a receiver or transmitter. The factory default is to have them all set to ground the channel select lines CSEL0-3, forcing the radio to operate on channel 1. On the receiver and transmitter there is also a Bank A/B line which usually oats high selecting Bank A. The receiver and transmitter have separate control of their channel select lines, so changing receiver channels does not affect the transmitter channel.If the Radio Service Software is failing partway through a read or write of the receiver, check that the receiver is not squelching and unsquelching repeatedly during the read or write operation. Disconnect the RF signal source from the receiver during the read or write operation.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 110623RADIO SYSTEM CONFIGURATIONSREPEATERThe MT-4E series Receivers and Transmitters may be congured in a repeater conguration. The standard way of setting up a repeater system is to connect the receiver to the transmitter through a Radio Interconnect Cable plugged into the RJ45 CNTL BUS connectors on the front panels of each radio module. This cable routes Analog and Digital COR / PTT signals and LVDS Serial Data from the receiver to the transmitter in both Analog and P25 Digital mode. The Radio Interconnect Cable may be connected directly from the receiver to the transmitter, or may be routed through a Repeater Control Card.A typical conguration is to set up the repeater to re-transmit an incoming signal in the same mode as it is received (i.e. normally, you would want a received analog signal to be repeated as analog and a received digital signal to be repeated as digital). This requires the Receiver and Transmitter modules to be programmed in Mixed Mode of operation through the RSS software. The repeater may also be programmed to operate in analog or P25 digital mode only.Mixed Mode Repeat operation occurs as follows: 1. The receiver determines whether an incoming signal is analog or digital and asserts either the ANALOG COR or DIGITAL COR signal line on the front panel RJ45 CNTL BUS connector. LVDS Serial Data is sent to the RJ45 CNTL BUS connector as well.2. The COR signal and LVDS Serial Data is transferred over the Radio Interconnect Cable directly to the Transmitter or is routed through a Repeater Control Card.3. The transmitter senses the incoming ANALOG PTT or DIGITAL PTT signal from the front panel RJ45 CNTL BUS connector and keys up in analog mode or P25 digital mode. LVDS Serial Data is routed through the transmitter for transmission.An alternate way of setting up a repeater system is to connect the receiver to the transmitter through an Audio Control Card or Base Controller. These control cards route analog audio and a single COR / PTT signal from the receiver to the transmitter. This conguration is recommended for analog repeater systems only.The receiver and transmitter have no connection between them apart from the audio (Audio Control Card or Base Controller only), COR / PTT signals and LVDS Serial Data lines. The transmitter does not get any information from the receiver about which frequency or channel number to key up on. The receiver and transmitter channel is determined by the state of the channel select lines and bank select line.NOTE: The transmitter is not to be operated as a repeater under an existing base station license.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Radio System Conguration24ANALOG FIXED (BASE) STATION INTERFACEThe MT-4E series Receivers and Transmitters may be congured in a xed (or base) station conguration with an analog interface. An Audio Control Card or Base Controller is added to the system for E & M control. For Tone Remote control of the system, a Tone Remote Adapter is added to the system along with the Controller. The Audio Control Card or Base Controller will also allow for repeat capability of the system using analog audio as the repeat path.The Base Controller is used for system control of encryption and decryption of the P25 digital voice messages (the optional decryption / encryption boards are required in the receiver / transmitter modules).DIGITAL FIXED (BASE) STATION INTERFACEThe MT-4E series Receivers and Transmitters may be congured in a xed (or base) station conguration with a digital interface. A Universal Interface Card is added to the system for Ethernet control.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 110625PARTS LISTSMT-4E RECEIVER ELECTRICAL PARTS LISTPart Number Description Product QuantityA11-FE4-150 RF PRESELECTOR CLASS B,136-174 VHF CLASS B 1A11-FE4A-150 RF PRESELECTOR CLASS A,136-174 VHF CLASS A 1A13-FE4-420 RF PRESELECTOR CLASS B,406-430 UHF (406-430) CLASS B 1A13-FE4A-420 RF PRESELECTOR CLASS A,406-430 UHF (406-430) CLASS A 1A13-FE4-460 RF PRESELECTOR CLASS B,450-470 UHF (450-470) CLASS B 1A13-FE4A-460 RF PRESELECTOR CLASS A,450-470 UHF (450-470) CLASS A 1A13-FE4-500 RF PRESELECTOR CLASS B,470-520 UHF (470-520) CLASS B 1A13-FE4A-500 RF PRESELECTOR CLASS A,470-520 UHF (470-520) CLASS A 1A11-RX4E-MAIN RECEIVER MAIN BOARD ASSEMBLY ALL 1A11-UDB UNIVERSAL DAUGHTER BOARD ALL 1A64-OR4-150 SYNTHESIZER, RX, VHF,136-174 VHF 1A64-OR4-440 SYNTHESIZER, RX ,UHF,406-470 UHF 1A64-OR4-500 SYNTHESIZER, RX ,UHF,470-520 UHF 1A64-0R4-800 SYNTHESIZER, RX ,UHF,799-869 UHF 1A14-RX4E-Main RECEIVER MAIN BOARD ASSEMBLY 800 MHz 1A15-FE4A-800 RF PRESELECTOR CLASS A 799–824 UHF 799–824 CLASS A 1A15-FE4A-850 RF PRESELECTOR CLASS A 851–869 UHF 851–869 CLASS A 1
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Parts Lists26MT-4E RECEIVER MECHANICAL PARTS LISTPart Number Description Product Quantity3536-10111405 LABEL/LEXAN, 14HP, VHF: RED VHF 13536-10131410 LABEL/LEXAN, 14HP, UHF: BLACK UHF 13702-10000120 FASTENER, QUICK RELEASE, GRAY ALL 43702-10000614 HANDLE, FRONT PANEL, 14HP,GREY ALL 13702-10001214 NAMEPLATE, BLANK, 14HP, ALUM. ALL 13702-62501010 CASE, 14HP RF PLUG-IN, MT-3 RX ALL 13702-63001101 PANEL, REAR,POS.1,14HP EXTRSN. ALL 13802-61001082 PANEL/FRONT,W/IDENT: MT-4E RX ALL 15630-12023250 GASKET, BeCu,3FINGER,.71”,CLIP ALL 25671-250N062B HOLE PLUG, .250” HOLE,NYL.,BLK ALL 15812-2M5FP14S SCREW, M2.5 x 14 FLAT/PHIL, A2 ALL 25812-2M5PP06S SCREW, M2.5 x 6, PAN/PHIL, A2 (E) ALL 35812-2M5PP12S SCREW, M2.5 x 12 PAN/PHIL, A2 ALL 15812-2M5PP14S SCREW, M2.5 x 14 PAN/PHIL, A2 (D) ALL 15812-2M5VP08S SCREW, M2.5x8,OVAL C/S/PHIL,A2 ALL 15812-3M0PP08T SCREW, M3 x 8, PAN/PHIL, BLACK ALL 45812-3M0VP06S SCREW, M3 x 6,OVAL C/S/PHIL,A2 (C) ALL 25812-3M0VP08S SCREW, M3 x 8,OVAL C/S/PHIL,A2 (A & B) ALL 65813-2M5SQ50Z NUT, M2.5, SQUARE-5mm, ZINC ALL 25814-3M0LK00S LOCKWASHER, M3, SPLIT,A2 STEEL ALL 4MT-4E RECEIVER P25 DIGITAL FIRMWAREPart Number Description Product QuantityAPP-FIRM01-W-XX DIGITAL UPGRADE FIRMWARE, MT-4E RX ALL 1MT-4E RECEIVER AND TRANSMITTER ENCRYPTIONPart Number Description Product QuantityENCRYPT-MT4E-XX ENCRYPTION MODULE, MT-4E RX/TX ALL 1MT-4E RECEIVER AND TRANSMITTER RSSPart Number Description Product QuantityAPP-RSS03-WC-XX RADIO SERVICE SOFTWARE, MT-4E ALL 1
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Parts Lists 27MT-4E TRANSMITTER ELECTRICAL PARTS LISTPart Number Description Product QuantityA11-UDB UNIVERSAL DAUGHTER BOARD ALL 1A21-TX4E-MAIN TRANSMITTER MAIN BOARD ASSEMBLY ALL 1A21-VPA155-08 TX POWER AMP, VHF130-180 MHz VHF 1A23-UPA450-08 TX POWER AMP, UHF 380-512 MHz UHF 1A64-OT4-150 SYNTHESIZER, TX, VHF,136-174 MHz VHF 1A64-OT4-440 SYNTHESIZER, TX, UHF,406-470 MHz UHF 1A64-OT4-500 SYNTHESIZER, TX, UHF,470-520 MHz UHF 1A64-0R4-800 SYNTHESIZER, TX, UHF,799-869 MHz UHF 1A25-UPA835-03 TX POWER AMP, UHF, 799-869 MHz UHF 1MT-4E TRANSMITTER MECHANICAL PARTS LISTPart Number Description Product Quantity3536-10111405 LABEL/LEXAN, 14HP, VHF: RED VHF 13536-10131410 LABEL/LEXAN, 14HP, UHF: BLACK UHF 13702-10000120 FASTENER, QUICK RELEASE, GRAY ALL 43702-10000614 HANDLE, FRONT PANEL, 14HP,GREY ALL 13702-10001214 NAMEPLATE, BLANK, 14HP, ALUM. ALL 13702-62502010 CASE, 14HP RF PLUG-IN, MT-3 TX ALL 13702-63002101 PANEL, REAR,POS.4,14HP EXTRSN. ALL 13802-61002121 PANEL/FRONT, W/IDENT: MT-4E TX ALL 15630-12023250 GASKET, BeCu,3FINGER,.71”,CLIP ALL 25671-250N062B HOLE PLUG, .250” HOLE,NYL.,BLK ALL 15812-2M5FP14S SCREW, M2.5 x 14 FLAT/PHIL, A2 ALL 25812-2M5PP06S SCREW, M2.5 x 6, PAN/PHIL, A2 (F) ALL 45812-2M5PP12S SCREW, M2.5 x 12 PAN/PHIL, A2 (E) ALL 25812-3M0PP06S SCREW, M3 X 6, PAN/PHILLIPS,A2 (D) ALL 25812-3M0PP08T SCREW, M3 x 8, PAN/PHIL, BLACK ALL 45812-3M0VP08S SCREW, M3 x 8,OVAL C/S/PHIL,A2 (A & C) ALL 65812-5M0FP08S SCREW, M5 x 8, FLAT/PHIL., A2 (B) ALL 45813-2M5SQ50Z NUT, M2.5, SQUARE-5mm, ZINC ALL 25814-3M0LK00S LOCKWASHER, M3, SPLIT,A2 STEEL ALL 47910-WP0WP011 CABLE,SMB PLUG-PLUG,RG316,11cm ALL 1A89-MIC4-08 CABLE/CONN ASSY,MICROPHONE CON ALL 1MT-4E TRANSMITTER P25 DIGITAL FIRMWAREPart Number Description Product QuantityAPP-FIRM02-W-XX DIGITAL UPGRADE FIRMWARE, MT-4E TX ALL 1
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MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 110629GLOSSARY OF TERMSAMBE+2™ Abbreviation for “Advanced Multi Band Excitation”.Bandwidth The difference between the limiting frequencies of a continuous frequency band. Typically measured in Kilohertz. May be considered the amount in kilohertz required for a single communications channel.BER Abbreviation for “BIT Error Rate”BPS Abbreviation for BITs Per Second, a data rate measure.C4FM The acronym for a 4-ary FM transmitter which uses QPSK modulation to work with a CFDD compatible receiver.Channel A single unidirectional or bidirectional path for transmitting or receiving, or both, of electrical or electromagnetic signals.Channel Spacing Typically measured in kilohertz from the center of one channel to the center of the next-adjacent-channel. May, or may not, be identical to bandwidth.Common Air Interface (CAI) A radio to radio signal path dened in terms of Access Method, Modulation Scheme, Vocoding Method, Channel Data Rate and Channel Data Format.CTCSS Abbreviation for “Continuous Tone-Controlled Squelch System”.DCS Abbreviation for “Digital Coded Squelch”.DSP Abbreviation for “Digital Signal Processor” a specialized microcomputer.DTMF Abbreviation for “Dual-Tone Multi-Frequency” - a signaling scheme used by the telephone system in which two voice band tones are generated for each keypad key press.Encryption A coding of plain text (or clear voice) into unintelligible forms for secure transmission. Error Correction Digital coding technique for detecting and correcting information transmission errors.FCC Abbreviation for “Federal Communications Commission”Firmware Software that is permanently stored in a hardware device which allows reading and executing the software, but not writing or modifying the software.Modulation A controlled variation of any property of a carrier wave for the purpose of transferring information.
MT-4E VHF & UHF Receiver & Transmitter Instruction ManualIM08-MT-4E-TXRX Project 1106Glossary of Terms30LSB Abbreviation for “Least Signicant BIT.”MSB Abbreviation for “Most Signicant BIT.”NAC Abbreviation for “Network Access Code.” A twelve bit eld identifying the network of the radio message. Typically used to steer repeater functions.PTT Abbreviation for “Push-to-Talk”, the switch on a subscriber unit which, when pressed, causes the subscriber unit to transmit.QPSK Abbreviation for “Quadrature Phase Shift Keying” modulation technique. PSK using four phase states.RF Abbreviation for “Radio Frequency.”Signal The detectable transmitted energy which carries information from a transmitter to a receiver.SINAD Abbreviation for “SIgnal plus Noise And Distortion” to “noise and distortion” ratio.Squelch A radio circuit that eliminates noise from the speaker when no transmitted signal is present.Subscriber Unit A mobile or portable radio unit used in a radio system.TGID Abbreviation for “Talk-Group Identier.” A sixteen bit eld identifying talk-group of the radio message.TIA Abbreviation for “Telecommunications Industry Association”Time-Out-Timer A function that limits the transmission period to a pre-dened time. The user will automatically stop transmitting when the timer goes off after the pre-dened time.VOCODER (Voice-Coder) A type of voice coder. Usually consisting of a speech analyzer and a speech synthesizer which convert analog speech into digital signals for transmission and digital signals back into articial speech sounds for reception.

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