Manuali utente per Codan Radio Communications VT-4-150

Sommario

• 1GENERAL

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• 1.1Introduction

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• 1.2Interim Operation

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• 1.3Manual Organization

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• 1.4VT-4R400 Transmitter Family Models

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• 1.5Performance Specifications

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• 1.5.1General

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• 1.5.2Audio Specifications

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• 1.5.3Physical Specifications

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• 2THEORY OF OPERATION

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• 2.1General

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• 2.2Power Supply

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• 2.3High Speed Serial Interconnect

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• 2.4Audio Circuits

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• 2.5PTT Circuitry

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• 2.6Microprocessor Board

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• 2.7Channel and Bank Selection

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• 2.7.1Channel Select Line Mapping

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• 2.8Jumper Functions and standard configuration

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• 2.9Hang Timer Selection

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• 2.10Kerchunk noise selection

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• 2.11Test Points

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• 2.12Connector Pinouts

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• 2.12.1Connector J9

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• 2.12.2Connector P1

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• 2.13Transmitter Programming

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• 2.13.1Transmitter Wide Options

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• 2.13.1.1Frequency Band

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• 2.13.1.2Source ID

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• 2.13.1.3Secure Hardware Equipped

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• 2.13.1.4Timeout Options

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• 2.13.2Channel Wide Settings

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• 2.13.2.1Channel Name

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• 2.13.2.2Frequency

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• 2.13.2.3Analog Bandwidth

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• 2.13.2.4Deviation

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• 2.13.2.5Channel Type

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• 2.13.2.6Audio Pre-emphasis

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• 2.13.2.7Timeout Value

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• 2.13.2.8Project 25 Squelch Settings: Network Access Code (NAC)

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• 2.13.2.9Project 25 Squelch Settings: Talk Group ID (TGID)

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• 2.13.2.10Analog Signaling Settings: Signaling

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• 2.13.2.11Analog Signaling Settings: CTCSS Tone

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• 2.13.2.12Analog Signaling Settings: Reverse Burst

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• 2.13.2.13Analog Signaling Settings: DCS Code

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• 2.13.2.14Analog Signaling Settings: Turnoff Code

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• 2.13.2.15Analog Squelch Settings: Invert DCS

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• 3Transmitter Assembly and Adjustment

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• 3.1Frequency Change

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• 3.2Minor Frequency Change

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• 3.3Major Frequency Change

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• 3.4Digital Signal Processor Board Alignment

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• 3.4.1Radio Service Software

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• 3.4.2Radio Programming Interface Module Interconnection

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• 3.4.3Reference Oscillator Adjustment

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• 3.4.4Transmitter Deviation Balance Adjustment

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• 3.4.5Transmitter Deviation Limit Adjustment

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• 3.4.6Audio Level Alignment

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• 3.4.7Amplifier Alignment

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• 3.5Recommended Test Equipment List

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• 3.6Repair Note

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• 3.7Printed Circuit board Numbering Convention

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• 4Repeater System Configuration

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• 4.1Interim Repeater

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• 4.1.1Repeater Interconnect Cable Pinout

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• 4.2Project 25 Compliant Repeater

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• 4.3Repeater System Troubleshooting

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• 5ILLUSTRATIONS

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• 5.1Digital Repeater Transmitter Front Panel

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• 5.2Digital Repeater Transmitter Exploded View

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• 5.3Digital Repeater Transmitter Block Diagram (Interim Mode)

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• 5.4Digital Repeater Transmitter Schematic Diagram

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• 5.5Digital Repeater Transmitter Main Board Component Layout (Bottom)

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• 5.6Digital Repeater Transmitter Main Board Component Layout (Top)

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• 5.7Digital Repeater Microprocessor Board Component Layout (Bottom)

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• 5.8Digital Repeater Microprocessor Board Component Layout (Top)

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• 6PARTS LIST

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• 6.1Digital Repeater Transmitter Main Board Parts List

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• 6.1.1Digital Repeater Transmitter Main Board Electrical Parts List

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• 6.1.2Digital Repeater Transmitter Main Board Mechanical Parts List

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• 6.2Digital Repeater Microprocessor Board Parts List

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• 6.2.1Digital Repeater Microprocessor Board Electrical Parts List

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• 6.2.2Digital Transmitter Additional PCBs

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• 7REVISION HISTORY

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