Motorola PRO3150, Руководство по обслуживанию

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i
TABLE OF CONTENTS
Safe And Efficient Operation Of Motorola Two-way Radios ............................. iii
Exposure To Radio Frequency Energy............................................................. iii
Portable Radio Operation And EME Exposure ................................................. iii
Electromagnetic Interference/Compatibility ......................................................iv
Operational Warnings .......................................................................................iv
Operational Cautions ........................................................................................iv
Introduction
1.1 Scope of Manual.................................................................................................. 1-1
1.2 Warranty and Service Support............................................................................. 1-1
1.2.1 Warranty Period ............................................................................................. 1-1
1.2.2 Return Instructions......................................................................................... 1-1
1.2.3 After Warranty Period .................................................................................... 1-1
1.3 Related Documents ............................................................................................. 1-1
1.4 Technical Support................................................................................................ 1-2
1.4.1 Piece Parts..................................................................................................... 1-2
1.5 Radio Model Chart and Specifications................................................................. 1-2
1.6 Radio Model Information...................................................................................... 1-2
Theory of Operation
2.1 Introduction .......................................................................................................... 2-1
2.2 Radio Power Distribution ..................................................................................... 2-1
2.3 Keypad................................................................................................................. 2-3
2.4 Controller ............................................................................................................. 2-4
2.4.1 MCU Digital.................................................................................................... 2-4
2.4.2 Audio/Signaling .............................................................................................. 2-4
2.5 UHF Transmitter .................................................................................................. 2-5
2.5.1 Power Amplifier (PA)...................................................................................... 2-5
2.5.2 Antenna Switch .............................................................................................. 2-5
2.5.3 Harmonic Filter............................................................................................... 2-6
2.5.4 Antenna Matching Network............................................................................ 2-6
2.5.5 Power Control Integrated Circuit (PCIC)........................................................ 2-6
2.5.6 Temperature Cut Back Circuit........................................................................ 2-6
2.6 UHF Receiver ...................................................................................................... 2-7
2.6.1 Receiver Front-End........................................................................................ 2-7
2.6.2 Receiver Back-End ........................................................................................ 2-8
2.6.3 Automatic Gain Control (AGC)....................................................................... 2-8
2.6.4 Frequency Generation Circuit ........................................................................ 2-9
2.7 Synthesizer .......................................................................................................... 2-9
2.8 Voltage Control Oscillator (VCO)....................................................................... 2-10
2.9 VHF Transmitter ................................................................................................ 2-12