Elenos ETG300DR User Manual

Use and maintenance manual
Page 4
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INDEX
4.8.3. RDS board ........................................................................Page 53
5. ELECTRICAL SCHEMATICS
5.1. Auxiliary power supply
5.1.1. Layout...............................................................................Page 57
5.1.2. Schematic .........................................................................Page 59*
5.1.3. Parts list ............................................................................Page 61
5.2. Switching power supply
5.2.1. Layout...............................................................................Page 63
5.2.2. Schematic .........................................................................Page 65*
5.2.3. Parts list ............................................................................Page 67
5.3. Mother board
5.3.1. Layout...............................................................................Page 71*
5.3.2. Schematics
5.3.2.1. VCO ...........................................................................Page 73*
5.3.2.2. PLL ..............................................................................Page 75*
5.3.2.3. MPX ............................................................................Page 77*
5.3.2.4. AGC and SWR protection..............................................Page 79*
5.3.2.5. CPU ............................................................................Page 81*
5.3.3. Parts list ............................................................................Page 83
5.4. Keyboard
5.4.1. Layout...............................................................................Page 93
5.4.2. Schematic .........................................................................Page 95*
5.4.3. Parts list ............................................................................Page 97
5.5. Driver
5.5.1. Layout...............................................................................Page 99
5.5.2. Schematic .........................................................................Page 100
5.5.3. Parts list ............................................................................Page 101
5.6. RF final output stage
5.6.1. Layout...............................................................................Page 103
5.6.2. Schematic .........................................................................Page 104
5.6.3. Parts list ............................................................................Page 105
5.7. LP filter
5.7.1. Layout...............................................................................Page 107
5.7.2. Schematics
5.7.2.1. Directional coupler .......................................................Page 108
5.7.2.2. Directional coupler amplifier..........................................Page 109
5.7.2.3. Low-pass filter ..............................................................Page 110
5.7.3. Parts list ............................................................................Page 111
5.8. Input output combiner system
5.8.1. Schematic .........................................................................Page 113
5.9. BUS board
5.9.1. Layout...............................................................................Page 115
5.9.2. Schematic .........................................................................Page 116
5.9.3. Parts list ............................................................................Page 117
5.10. Thermal probe
5.10.1. Layout...............................................................................Page 119
5.10.2. Schematic .........................................................................Page 119
5.10.3. Parts list ............................................................................Page 120
6. TROUBLESHOOTING ...........................................................................Page 121
7. TECHNICAL SPECIFICATION .................................................................Page 123
Page numbers marked with an asterisk (*) are in A3 format

Elenos ETG300DR Specifications

General

Brand	Elenos
Model	ETG300DR
Category	Transmitter
Language	English