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Daniels VT-3H035-SWA3 Instruction Manual

Vhf enhanced transmitter
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MT-3 RADIO SYSTEMS
Copyright © 1998 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.
DE™ is a registered trademark of Daniels Electronics Ltd. registered in the United States Patent
and Trademark Office.
Issue:
1 Rev A
Issue Date:
September 98
Printing Date:
Month Year
Part No.:
IM20-VT3H040 PRINTED IN CANADA
DANIELS
ELECTRONICS LTD.
VHF ENHANCED
TRANSMITTER
INSTRUCTION
MANUAL
Covers model: VT-3H035-SWA3, VT-3H045-SWA3
Previous Issue:
Previous Issue Date: July 97
TM
1
Daniels Electronics Ltd.
Victoria, B.C.

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  • Page 1 MANUAL Covers model: VT-3H035-SWA3, VT-3H045-SWA3 Copyright © 1998 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.
  • Page 2 Document Control: This document has been produced, verified and controlled in accordance with Daniels Electronics’ Quality Management System requirements. Please report any errors or problems to Daniels Electronics’ Customer Service Department NOTE: The user's authority to operate this equipment could be revoked through any changes or modifications not expressly approved by Daniels Electronics Ltd.

  • Page 3: Table Of Contents

    REVISION HISTORY....................5-1 MODULE MANUALS Transmitter Main Board Instruction Manual ........IM20-MT3TXMN VT3H040 VHF Amplifier Instruction Manual ......IM20-VT3040AMP OS-3A/H Enhanced Synthsizer Instruction Manual 29-470 MHz ..IM10-OS3AH VT-3H040 Channel Designation Table .......... IM20-VT3H040CT DANIELS ELECTRONICS VT-3H040 VHF Enhanced Transmitter Instruction Manual...

  • Page 4: General

    The synthesizer module can be programmed to have up to 16 channels exclusive to one frequency band. The VT-3H040 Transmitter is designed to interface with Daniels Electronics' MT-3 Repeater System while maintaining MT-2 System compatibility. Both radio systems are characterized by dependable, low maintanence performance under the most severe environmental conditions.

  • Page 5: Vt-3H040 Transmitter Family Models

    38 MHz can be accomodated by one of the models providing that the frequency span does not exceed 1.0 MHz. Model VT-3H035-SWA3 can operate at frequencies up to 38.5 MHz and is the preferred choice when spanning 38 MHz. Consult the factory for futher information regarding operation around this frequency.

  • Page 6: Performance Specifications

    Standard: ±1 ppm, -30˚C to +60˚C, optional -40˚C to +60˚C Channel Selection: In 5 kHz or 6.25 kHz increments selected through four internal BCD rotary switches. Preset capability for 16 channel memory selectable through external control. DANIELS ELECTRONICS VT-3H040 VHF Enhanced Transmitter Instruction Manual...
  • Page 7 Front Panel switch: KEY TX - without time-out timer; NORM - with or without time-out-timer; Isolated (optional relay) with or without time-out timer. PTT Time Out Timer: Selectable from 1 sec. to 8 hrs. (factory set 5 min.). DANIELS ELECTRONICS VT-3H040 VHF Enhanced Transmitter Instruction Manual...

  • Page 8: Audio Specifications

    Less than 2.5% THD; 1 kHz tone at 1.5 kHz or 3 kHz deviation (-40°C to +60°C). Hum and Noise: Better than 55 dB (test receiver band limited: 400 Hz to 30 kHz). DANIELS ELECTRONICS VT-3H040 VHF Enhanced Transmitter Instruction Manual...

  • Page 9: Physical Specifications

    2 and 4 layer printed circuitboards. Gold plated module connectors. Module Design: Compact Eurostandard modular design. Plug-in modules mate with Daniels standard M3 repeater subrack. Subracks / modules comply with IEEE 1101, DIN 41494 and IEC 297-3 (mechanical size / modular arrangement).

  • Page 10: Illustrations

    RF OUT REFERENCE TYPE N RF SMA REFERENCE OUTPUT JACK INPUT JACK INPUT DANIELS ORANGE TEXT ELECTRONICS LTD. MADE IN CANADA MADE IN CANADA MADE IN CANADA VT-3H035-SWA3 TRANSMITTER VT3040M1 MODEL IDENTIFIER DANIELS ELECTRONICS VT-3H040 VHF Enhanced Transmitter Instruction Manual...

  • Page 11: Mt-3 Transmitter Case - Exploded View

    MT-3 Transmitter Case - Exploded View 3 FINGER GASKET (2) MT3TXM2B DANIELS ELECTRONICS VT-3H040 VHF Enhanced Transmitter Instruction Manual...

  • Page 12: Revision History

    REVISION HISTORY ISSUE DATE DESCRIPTION AND (REASON) DANIELS ELECTRONICS VT-3H040 VHF Enhanced Transmitter Instruction Manual...

  • Page 13: Main Board

    Version 2.3 FM Audio Processor Board Copyright © 2003 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.
  • Page 14 NOTE: The user's authority to operate this equipment could be revoked through any changes or modifications not expressly approved by Daniels Electronics Ltd. 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.
  • Page 15 TABLE OF CONTENTS 1 GENERAL ........................1-1 Introduction......................1-1 Performance Specifications..................1-1 1.2.1 General Specifications..................1-1 1.2.2 Audio Specifications ..................1-2 2 THEORY OF OPERATION....................2-1 Transmitter Main Board..................2-1 2.1.1 General Theory of Operation ................2-1 2.1.2 Transmitter Push-To-Talk................2-1 2.1.2.1 Microphone PTT ..................2-1 2.1.2.2 PTT With Time-Out-Timer................2-2 2.1.2.3 PTT No Time-Out-Timer................2-2 2.1.2.4...
  • Page 16 Version 2.3 Audio Processor .................2-15 2.4.1 Introduction......................2-15 2.4.2 Version 2.3 FM Audio Processor Block Diagram ...........2-17 2.4.3 Factory Configuration..................2-18 2.4.4 Turn-on Time....................2-19 2.4.5 Low Frequency Modulation................2-19 2.4.6 Audio Processor Signals..................2-20 2.4.6.1 FM Audio Processor Outputs..............2-20 2.4.6.2 Audio Processor Modulation Outputs ............2-20 2.4.6.3 Audio Processor Microphone Input.............2-21 2.4.6.4...
  • Page 17 7.2.1 Wideband VHF and UHF Synthesized Transmitters........7-3 7.2.2 Narrowband VHF and UHF Synthesized Transmitters........7-4 7.2.3 Wideband Crystal Transmitters................7-6 7.2.4 Narrowband Crystal Transmitters ..............7-7 7.2.5 Configuration ..................7-8 8 ILLUSTRATIONS AND SCHEMATIC DIAGRAMS...........8-1 Transmitter Block Diagram..................8-1 Transmitter Main Board - Top Side Component Layout........8-3 Transmitter Main Board - Bottom Side Component Layout........8-4 Transmitter Main Board - Schematic Diagram............8-5 Front Panel Board - Component Layout ...............8-6...
  • Page 18 LIST OF FIGURES Figure 1 Audio Processor Block Diagram ................2-17 Figure 2 Interconnection Pin Layout Diagram ..............2-18 Figure 3 Microphone and Balanced Input Circuitry, V2.3 Audio Processor .....2-23 Figure 4 Limiter and Splatter Filter, V2.3 Audio Processor..........2-24 Figure 5 Bypassing Compression, V2.3 Audio Processor ..........2-25 Figure 6 TX Audio Control Circuitry, V2.3 Audio Processor ...........2-26 LIST OF TABLES Table 1...
  • Page 19 GENERAL Introduction The MT-3 Transmitter Main Board integrates the MT-3 Front Panel Board, MT-3 Audio Processor, Synthesizer or Crystal Controlled Oscillator module, and Amplifier module together to comprise a MT-3 series transmitter (see section 5.1: MT-3 Transmitter Block Diagram). The Front Panel Board and the Audio Processor are soldered directly to the Transmitter Main Board while the Amplifier and the Synthesizer or Crystal Controlled Oscillator module are frequency band sensitive, plug-in modules.
  • Page 20 PTT Activation: • Active to ground with or without time-out-timer. • Microphone activated with or without time-out-timer. • Front Panel switch: KEY TX - without time-out-timer. • NORM - with or without time-out-timer. • Isolated (optional relay) with or without time-out-timer. PTT Time-Out-Timer: Selectable from 1 sec.
  • Page 21 10 REVISION HISTORY Issue Issued Revised Details Transmitter Main Board Instruction Manual IM20-MT3TXMN 10-1...
  • Page 22 29 - 50 MHz Covers Models: VT-3H040 Amplifier Copyright © 2003 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.
  • Page 23 NOTE: The user's authority to operate this equipment could be revoked through any changes or modifications not expressly approved by Daniels Electronics Ltd. 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.
  • Page 24 VT-3H040 Amplifier Component Layout ............4-2 VT-3H040 Amplifier Schematic Diagram............4-3 PARTS LISTS ......................5-1 VT-3H040 Amplifier Electrical Parts List............5-1 VT-3H040 Lowpass Filter Electrical Parts List ..........5-4 VT-3H040 Amplifier Mechanical Parts List ............5-4 REVISION HISTORY....................6-1 DANIELS ELECTRONICS LTD. VT-3H040 VHF Amplifier Instruction Manual IM20-VT3040AMP...
  • Page 25 Output Impedance and VSWR: 50 Ω, Type N connector; 3:1 max. VSWR. Input /Output Isolation: > 60 dB Duty Cycle: 100%: Continuous operation from -30˚ C to +60˚C (optional -40°C to +60°C) DANIELS ELECTRONICS LTD. VT-3H040 VHF Amplifier Instruction Manual IM20-VT3040AMP...
  • Page 26 Amplifier Standby Current: less than 0.5 mA. Amplifier Enable: Active to ground. Amplifier Enable Response: typically overdamped, rising to within 90% of full power within 5 msec; maximum (underdamped) overshoot of 30%. DANIELS ELECTRONICS LTD. IM20-VT3040AMP VT-3H040 VHF Amplifier Instruction Manual...
  • Page 27 REVISION HISTORY Issue Date Description DANIELS ELECTRONICS LTD. VT-3H040 VHF Amplifier Instruction Manual IM20-VT3040AMP...
  • Page 28 Daniels Electronics Ltd. DE™ is a registered trademark of Daniels Electronic Ltd. registered in the U.S. Patent and Trademark Offi ce. Document Number: IM10-OS3AH Daniels Electronics Ltd.
  • Page 29 This document has been produced, verifi ed and DOCUMENT CONTROL controlled in accordance with Daniels Electronics’ Quality Management System requirements. Please report any errors or problems to Daniels Electronics’ Customer Service Department. NOTE The user’s authority to operate this equipment could be revoked through any changes or modifi...
  • Page 30 Contents Manual Section Locator ............Enhanced Synthesizer OS(R/T)-3H 29-71.4 MHz ....General Information ................... Alignment ....................Schematics and Illustrations ..............Parts List ....................Enhanced Synthesizer OS(R/T)-3H 128-174 MHz ....General Information ................. Alignment ....................Schematics and Illustrations ..............Parts List ....................Enhanced Synthesizer OS(R/T)-3H 406-470 MHz ....
  • Page 31 Manual Section Locator MANUAL SECTION LOCATOR To help determine the correct section for the synthesizer in question, refer to this chart. Note that the operating frequency of the synthesizers in receivers is different from the receive frequency of the radio itself. This is the IF Offset correction factor, and is described in each section. Transmitters Receivers Enhanced...
  • Page 32 29-71.4 MHz - Models Covered ENHANCED SYNTHESIZER OS(R/T)-3H 29-71.4 MHZ Covers Models: OST-3H035 OST-3H045 OSR-3H061 Transmitters Receivers Enhanced Enhanced Transmitter Receiver Synthesizer Location Synthesizer Location Radio Model & Model & Model & Model & Frequency Frequency Frequency Synthesizer Manual Synthesizer Manual Range Range...
  • Page 33 29-71.4 MHz - General Information General Information Introduction The OS(R/T)-3H Synthesizer is a compact, fully Note: This section of the manual provides shielded and environmentally rugged frequency service and operating information for synthesis module that is the nucleus of every just the synthesizer modules listed MT-3 synthesized Receiver and Transmitter below.
  • Page 34 (PCB) numbering convention in which the last two digits of the circuit board number represent the circuit board version. All PCB’s manufactured by Daniels Electronics Ltd. are identifi ed by one of the following numbering conventions:...

  • Page 35: Parts List

    29-71.4 MHz - Parts Lists Parts List Analog Board Electrical Parts List Desig Description Part Number Enhanced FM Synthesizer Instruction Manual IM10-OS3AH...
  • Page 36 Revision History REVISION HISTORY Revision Date Description Enhanced FM Synthesizer Instruction Manual IM10-OS3AH...
  • Page 37 Daniels Electronics Ltd. DE™ is a registered trademark of Daniels Electronic Ltd. registered in the U.S. Patent and Trademark Offi ce. Document Number: IM55-CIPM3 Daniels Electronics Ltd.
  • Page 38 This document has been produced, verifi ed and DOCUMENT CONTROL controlled in accordance with Daniels Electronics’ Quality Management System requirements. Please report any errors or problems to Daniels Electronics’ Customer Service Department. NOTE The user’s authority to operate this equipment could be revoked through any changes or modifi...
  • Page 39 Contents General Information ............... Introduction ....................Performance Specifi cations ............... Theory of Operation ............... Paging Signal Path ..................OCXO/PLL ....................Alignment ................Repair Notes .................... General ....................Setup......................Frequency Adjustment (Digital Paging)............ Reference Adjustment (Analog Paging)........... Test Data Symmetry Adjustment.............. PLL Setup ....................

  • Page 40: General Information

    Repeater System. This module provides digital as Motorola’s FLEX™ Paging Protocol. and/or analog paging capability for Daniels MT-3 transmitters in all supported frequency bands. Setup conditions are established via front panel switch settings, while internal jumper settings...

  • Page 41: Performance Specifi Cations

    General Information Performance Specifi cations Model Number: CI-PM-3 Type: MT-3 Series Paging Modulator Compatibility: MT-3 Series Radio Systems Modulation: 16K0F3E (FM Analog) 14K7F1D (FM Data Transmission) Balanced 600 Ω(tone or voice) Audio Input: Digital Input: Bipolar: RS-232 compatible 10 MHz, 0.5 to 2.5 V rms, 50 Ω Front Panel SMA Reference Input: 10 MHz (Modulated), 2.5 V rms, 50 Ω...
  • Page 42 Conformal coated glass epoxy 4 layer printed circuit boards. Gold plated module connectors. Module Design: Compact Eurostandard modular design. Plug-in module mates with Daniels standard 19” MT3 repeater subrack. Interchangeable for test and repair. External Connections: REF Input and Output SMA connectors located on the module’s front panel.

  • Page 43: Theory Of Operation

    THEORY OF OPERATION Paging Modulator Instruction Manual IM55-CIPM3...

  • Page 44: Alignment

    ALIGNMENT Repair Notes Removal and replacement of surface mount components should be performed only in specifi cally designed surface mount rework and repair stations complete with electrostatic discharge (ESD) protection. To help prevent damage to the circuit board pads when removing Surface Mount Solder Jumpers, it is recommended that solder braid be used in place of manual vacuum de-soldering tools.

  • Page 45: Connector Pin Functions And Jumper Settings

    CONNECTOR PIN FUNCTIONS AND JUMPER SETTINGS Paging Modulator Instruction Manual IM55-CIPM3...

  • Page 46: Illustrations And Schematics

    ILLUSTRATIONS AND SCHEMATICS Printed Circuit Board Numbering Convention Daniels Electronics Ltd. has adopted a printed circuit board (PCB) numbering convention in which the last two digits of the circuit board number represent the circuit board version. All PCB’s manufactured by Daniels Electronics Ltd.

  • Page 47: Ci-Pm-3 Front Panel Controls

    TO REMOVE SW4 DETAIL DATA "1" CONTINUOUS BIT STREAM DATA "0" DANIELS ELECTRONICS LTD. TITLE: PAGING CARD FRONT PANEL DATE: 25 JUNE 2003 DRAWN BY: EVA DANIELS DWG No: B0283 REV DATE: 3 JULY 2003 Paging Modulator Instruction Manual IM55-CIPM3...

  • Page 48: Simulcast Paging

    Illustrations and Schematics Simulcast Paging LINK RX CI-PM-3 PAGING Balanced Audio Balanced Audio Daniels Paging MT-3 Modulator Discr O/P Daniels MT-3 UHF RX CTCSS Module VHF/UHF HIGH REF In STABILITY (±0.002 ppm) LINK A Digital Data Paging Balanced Audio Terminal...

  • Page 49: Parts Lists

    PARTS LISTS Electrical Parts List Desig Description Part Number Paging Modulator Instruction Manual IM55-CIPM3...

  • Page 50: Revisionhistory

    REVISION HISTORY Revision Date Description Paging Modulator Instruction Manual IM55-CIPM3...

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Vt-3h045-swa3

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