O= vase Document Number: Revision: Revision Date: MT-4 VHF & UHF RECEIVER & TRANSMITTER INSTRUCTION MANUAL 136-174 MHz / 406-470 MHz / 470-520 MHz Covers Models: UT-4E400-00-800 UT-4E450-00-800 UT-4E500-00-800 VR-4E150-00-000 UR-4E500-00-000 VR-4E 150-A-000 UR-4E500-A0-000 VT-4E150-00-800 Copyright © 2007 Daniels Electronics Lid. Al rights reserved.
DOCUMENT CONTROL DOCUMENT REVISION DEFINITION NOTE a— | MOBMTAE-TXRX This document has been produced, verified and contra lied in accordance with Daniels Electronics’ Quality Management System requirements. Please report any errors or problems to Daniels Electronics’ Customer Service Department. Daniels Electronics Lid. utilizes a three-level revision system.
RF Exposure Warning Exposure to radio frequency (RF) energy has been identified 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 maxim urn permissible exposure (MPE) limits for field strength and power density, listed in FCC 47 CFR § 1.4310 and IC RS-102 Issue 2 Sect 4.
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v Contents General Information introduction Receiver Performance Specification Transmitter Performance Specifications . Physical Specifications Theory of Operation Receiver Theory. Transmitter Theory. Channel and Bank Selection... Radio Service Software Programming Introduction Receiver Radio Service Software Programming...
INTRODUCTION The MT-4 Receiver and Transmitter are FM radio modules capable of analog operation in 12.5 kHz (narrow band) or 25 kHz (wide band) channels. A firmware upgrade may be purchased to allow P26 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 (transmitter) or 408 to 430 MHz, 450 to 470 MHz and 470 to 520 MHz (receiver).
2 General Information Secure Communications The Receiver and Transmitter are capable of decoding and encoding secure communications if a ALCIBIADES 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 Key loader in conjunction with 2 Daniels Key loader Cable.
General Information | 3 RECEIVER PERFORMANCE SPECIFICATIONS General Frequency Range: 136 to 174 Miz / 406 to 430 MHz / 450 to 470 MHz / 470 to 520 MHz. Channel Spacing: 12.5, kHz Channel Selection: In 2.5, 6.0 or 6.25 kHz increments selected with Radii Programming Software Package Number of Channels: Preset capability for 2 banks of 16 channels Channel Switching Range: + 2.
4 o=" General Information COR Interface; 4150 mA, 50 V open drain power SAMOSET Supply Voltage: +13.8 VOC Nominal {range +10 to +17 VDC) +9.
General Information | § TRANSMITTER PERFORMANCE SPECIFICATIONS General Frequency Range: 136 to 174 MHz / 406 to 470 MHz / 470 to 520 MHz Carrier Frequency Stability: 1.0 ppm (VHF) / 2 0.5 ppm (UHF) Channel Spacing: 12.8, kHz Channel Selection: In 2.5, 5.0 or 6.25 kibitz increments selected with Radio Programming Software Package Number of Channels: Preset capability for 2 banks of 16 channels Compatibility.
8 | General Information n= PHYSICAL SPECIFICATIONS Physical Dimensions: Module Weight: Corrosion Prevention: Module Design: External Connections: Width: Height. Depth: 7.1m (2.8 in} 12.8 cm (5.05 in) 19cm {7.5in) Receiver. 1.2 kg (2.51bs.) Transmitter. 1.4 kg {3.0 Abs) Anodized aluminum construction Stainless steel hardware Gold plated module connectors = Compact Euro standard modular design. + Plug-in modules mate with the Daniels standard MT-3 repeater sub rack.
RECEIVER THEORY The MT-4 Receiver is constructed with the Receiver Main Board and the RF Pres elector sub-assembly. The Synthesizer and the Universal Daughter Board (BUD, that contains the Digital Signal Processor Board, are mounted on the Receiver Main Board An optional Encryption Board may also be installed on the Receiver Main Board.
D=" 8 Theory of Operation Analog / Digital Detection The digital detector in the UDB looks for a specific P25 bit pattern called the Frame Lynch. If the Frame Lynch is detected, P25 digital processing is applied, and if no Frame Lynch is detected, the signal is assumed fo be analog, and analog processing is applied.
TRANSMITTER THEORY The MT-4 Transmitter is constructed with the Transmitter Main Board and the Amplifier module sub-assembly. The Synthesizer and the Universal Daughter Board (BUD, that contains the Digital Signal Processor Board, are mounted on the Transmitter Main Board. An optional Encryption Board may also be installed on the Transmitter Main Board.
40 | Rotatory of Operation PTT Circuitry For normal repeater operation, the transmitter may be keyed up in P25 Digital mode (if it is programmed for P25 Digital mode or mixed mode operation) by pulling the front panel DIGITAL PTT input low. Similarly, it may be keyed up in analog mode {if it is programmed for analog mode or mixed mode operation) by pulling the front panel ANALOG PTT input low.
CHANNEL AND BANK SELECTION Four channel select lines CHISEL-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. Tess 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.
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INTRODUCTION Receiver and Transmitter programming is performed with the PC-based Radio Service Software (RSFSR. A type Ato § 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.
14 | Radio Service Software Programming RECEIVER RADIO SERVICE SOFTWARE PROGRAMMING Receiver Global Options Several options may be set which affect the operation of the Receiver an a global basis. Frequency Band There are four Frequency Bands available for Receivers. VHF 136-174 MHz UHF 406-430 MHz UHF 450-470 MHz UHF 470-520 MHz When the Frequency Band is changed, the Frequency field in every Receiver channel will be changed to the lowest frequency in the band.
Channel Options The Receiver may be programmed with up to 32 channels, each with a different frequency, channel spacing and modulation type. The channels are arranged in two banks of 16 channels each, referred to as Bank A and Bank B. In this manual, a specific channel is referred to by its bank and channel i.e. B12 would refer to channel 12 in bank B. The following are all the settings that may be programmed on a per channel basis Channel Name Each channel may be assigned a ext name characters.
Radio Service Software Programming P25 Digital Settings: Talk Group ID The receiver's Talk Group ID can be set here, This applies to P25 signals only. The receiver may be set to squelch on a specific Network Access Code, or on any Network Access Code. The Talk Group Identifier (TURGID) is a 16 bit field embedded within every P25 voice call. The purpose of a Talk group is to allow logical groupings of radio users into distinct organizations.
TRANSMITTER RADIO SERVICE SOFTWARE PROGRAMMING Transmitter Global Settings Several options may be set which affect the operation of the Transmitter on a global basis. Frequency Band There are three Frequency Bands available for Transmitters: VHF 136 174 MHz UHF 408 470 MHz UHF 470 520 MHz When the Frequency Band is changed, the Frequency field in every Transmitter channel will be changed to the lowest frequency in the band.
os 18 | Nadia Service Software Programming Channel Settings The transmitter may be programmed with up to 32 channels, each with a different frequency, channel spacing and modulation type. The channels are arranged in two banks of 16 channels each, referred to as Bank A and Bank B. In this manual, a specific channel is referred to by its bank and channel i.e. B12 would refer to channel 12 in bank B. The following are all the settings that may be programmed on a per channel basis.
P25 Digital Settings: Talk Group ID The transmitter’s Talk Group ID can be set here, This applies to P25 signals only. The Talk Group (identifier (TURGID} is a 16 bit field embedded within every P25 voice call. The purpose of a Talk group is to allow logical groupings of radio users into distinct organizations. The Brigid's 16 bit field ranges from 0 to 65,535 (hexadecimal $0 to Three of these values are set up for special functions. 1.
20 o=" Radio Service Software Programming Analog Settings: Bandwidth This setting should be changed to match the channel spacing and bandwidth of the analog channel. This setting is visible only when the Parnell Type field is set to Analog or Mixed Mode. Analog Settings: Pr-emphasis For analog channels, the standard 6 octave per-emphasis curve may be either disabled or applied to the transmitted audio.
INTRODUCTION The RSS has the ability to put the receiver or transmitter into Service mode, where adjustments to the Audio Levels, RF Power Levels, Reference Oscillator and System Setup may be carried out. Bit Error Rate (BER) testing and transmitter test patters may also be performed in Service mode. To put the receiver or transmitter in Service mode, the module must be connected to a PC running the Radio Service Software (RSS) through a type Ato 5 pin mini-type B USB cable.
22 o=" | Radio Service Software Tuning Sensitivity Verification Two methods of sensitivity verification are used, one for analog channels and one for P25 digital channels. For either method, the radio should have a channel programmed for the desired frequency of operation, and the correct channel and bank selected.
Audio Level Alignment The audio level should be set after all other alignments have been completed. The Receiver's RF input is connected to a signal generator or communications monitor and power applied. Connect a 600 ( load across the balanced audio output. Two adjustment procedures are used depending on whether the channel is analog or P25 digital.
24 | Radio Service Software Tuning TRANSMITTER SERVICE SOFTWARE TUNING Reference Oscillator Adjustment The reference oscillator provides an accurate frequency standard to which the transmitter's carrier signal is phase locked. For this test, the Transmitter will generate an RF signal from its RF output. Connect the RF output to a frequency counter or communications test set. To adjust the reference oscillator frequency, put the transmitter into Service Mode.
Sub tone Level Alignment The sub tone level should be set after the audio level alignment has been completed. The sub tone levels are set in the System Setup: Sub tone Deviation Levels tab. Sub tone levels can be set for both narrow band or wide band, internally or externally generated. The transmitter should be programmed to an analog channel for the purposes of the test.
2 i Radio Service Software Tuning D= Test Patterns The Test Patterns allow the transmitter to generate a number of P25 Test Patterns for testing purposes, COMFY Modulation Fidelity Pattern The standard Transmitter COMFY modulation fidelity pattern is a continuously repeating bit stream defined by the following 24 bit sequence (Refer to TITANIA 102.CAAB for performance recommendations).
27 HARDWARE TUNING AND TROUBLESHOOTING REPAIR NOTE The MT-4 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 specifically designed surface mount rework and repair stations complete with Electrostatic Discharge (ESD) protection.
28 | Hardware Tuning and Troubleshooting RECOMMENDED TEST EQUIPMENT Alignment of the Receiver and/or Transmitter requires the following test equipment or its equivalent Power supply Regulated +8.5 VDC at 2A Phillips PM 2811 Power Supply Regulated +13.
RECEIVER ASSEMBLY The UDB, Synthesizer and optional Encryption Board are mounted on the Receiver Main Board. The RF Pres elector is attached with two front panel screws and one screw through the rear F connector. An extruded aluminum shell that slides over the receiver assembly forms an enclosure. The enclosure is completed by the installation of side and front panel screws. Receiver hardware alignment is performed solely on the RF Preciousness.
30 | Hardware Tuning and Troubleshooting RECEIVER RF ALTERNATE TUNING PRES ELECTOR TUNING PROCEDURE PROCEDURE The alternate method of tuning the RF . Pres elector is to monitor Receiver SIN AD, This The best way to tune the RF Pres elector is tuning procedure is typically used when the to use a Spectrum Analyzer with a tracking Receiver only has a single RF frequency. Use generator. The frequency response of the the following procedure for SIN AD Keno Pres elector Filter can be seen at the IF output.
TRANSMITTER ASSEMBLY The UDB, Synthesizer and optional Encryption Board are mounted on the Transmitter Main Board. The RF Amplifier module is secured on the Transmitter Main Board by screws, and an enclosure is formed by an extruded aluminum shell that slides over the Transmitter Main Board .
32 Hardware Tuning and Troubleshooting TRANSMITTER AMPLIFIER TUNING PROCEDURE The Transmitter Amplifier requires 0 dBm of input power and is continuously adjustable aver its power range The amplifier provides Quip Power and Antenna SWERVE Alarm outputs (open drain; active low) through the transmitter to the Motherboard. The amplifier’s output power level and alarm level can be set without detaching the amplifier from the transmitter board.
Hardware Tuning and Troubleshooting | 33 Transmitter SWERVE Alarm (Reverse Power) Step Reference Action Desired Results Notes 1 Transmitter Disconnect the test set and terminate the Transmitter with a 3:1 mismatch load 2 Connector J1 Connect a voltmeter fo Pin § of connector J1 3 RV3 Adjust CW Until Pin 5 reads +2.5 VDC, ar a noticeable drop {10 % of total current or more} in current on the +13.
34 Hardware Tuning and Troubleshooting D= RECEIVER JUMPERS Receiver Main Board Jumper Default Position Function / Description JU out When installed enables Clear Keys 1 input Ju2 ouT When installed enables Clear Keys 2 Input Jus IN ‘When installed enables power to Discriminator Output amplifier JUS QUT When installed bypasses capacitance coupling on the Discriminator output Ju7 ouT ‘When installed enables power to Discriminator Output LPF amplifier Jus x X; 600 Q Audio Transformer Y: Bypass Transformer Jue
Hardware Tuning and Troubleshooting | 35 TRANSMITTER JUMPERS Transmitter Main Board Jumper Default Position Function / Description Ju1 X X: A/D Front Panel Switch selects transmitter AD mode Y: A/D External Input selects transmitter A/D mode Juz Y X: MIC QUT connects to Microphone Audio input Y: MIC IN connects to Microphone Audio input Jus Xx X: 800 2 Audio Transformer Y: Bypass Transformer Jus iN When installed selects 800 ( resistance to ground Jus iN ‘When installed enables Clear Keys 1 input Jus IN Whe