Codan 9780 Manuals

Manuals and User Guides for Codan 9780. We have 1 Codan 9780 manual available for free PDF download: Technical & Service Manual

Codan 9780 Technical & Service Manual

Codan 9780 Technical & Service Manual (158 pages)

HF SSB Transceiver

Brand: Codan | Category: Transceiver | Size: 1 MB

Table of Contents

Table of Contents
3
Index

13
About this Manual

19
- Standards and Icons
  20
- Definitions
  21
  - Acronyms and Abbreviations
    21
  - Glossary
    24
  - Circuit Reference Designations
    24
  - Units
    25
  - Unit Multipliers
    26
- About this Issue
  27
  - Associated Documents
    27
  - Other Documents
    27
General Information

29
List of Tables

38
- Connectors
  38
- Options
  43
Brief Description

45
- Figure 3-1: 9323, 9360, 9390 and 9780 PCB Block Diagram
  
  46
- General
  46
- Control and Switching
  47
- Synthesiser
  48
- Receive Path
  49
- Transmit Path
  50
Technical Description

51
- Control and Supply Voltages
  51
- Receiver
  55
  - Input Low-Pass Filters
    55
  - High-Pass Filters
    55
  - RF Amplifier
    55
  - LPF and First Mixer
    56
  - 45 Mhz Band-Pass Filter
    56
  - Second Mixer
    56
  - Noise Limiter
    56
  - 455 Khz Filter and if Amplifier
    57
  - Demodulator
    57
  - Automatic Gain Control
    57
  - Voice Mute
    59
  - Volume Control and Audio Output Amplifier
    60
  - Low Voltage Tx Inhibit
    60
- Transmitter Exciter
  61
  - Microphone Amplifier/Compressor
    61
  - Modulator
    62
  - 455 Khz Filter and First Mixer
    62
  - 45 Mhz Band-Pass Filter
    63
  - Second Mixer and Exciter Output Filter
    63
  - Tune
    63
- Local Oscillators
  65
- Microprocessor and Peripherals-Transceiver
  71
  - Microprocessor
    71
  - I C Buses
    72
  - Synthesiser Bus
    73
  - PA Serial Bus
    73
  - RS232 Bus
    73
  - Tone Generation
    73
  - A/D Inputs
    74
  - Antenna Control
    74
  - E 2 PROM Write Protect
    75
  - Table 4-15: Frequency Band and Number
    75
- Microprocessor and Peripherals-Control Panel
  76
  - Microprocessor
    76
  - I 2 C Buses
    76
  - Keypad
    76
  - Select Control
    77
  - Volume Control
    77
  - Display
    77
  - Microphone Keypad
    78
  - Data Input/Output
    78
  - S"+ RF Indicator
    79
  - Mute Indicators
    79
  - Front Panel Back Light
    79
- PA and Filters
  80
  - Gain Control Stage
    80
  - Pre-Driver Stages
    80
  - Driver Stage
    81
  - Output Stage and Bias Regulator
    81
  - Output Filters
    81
  - ALC Control
    82
- Selective Calling
  84
  - Calibration
    84
  - Selective Calling
    85
  - Emergency Call (RFDS) and Two-Tone Calling
    86
  - Emergency Alarm (Marine)
    87
- PA Exciter Interface
  88
  - Filter and PTT Control
    88
  - Power On/Off
    88
  - Transmit Amplifier
    89
  - Receiver Path
    89
  - Antenna Control
    89
  - PA Assembly 4404
    90
- Options
  91
  - Option am
    91
  - Option CW
    91
  - Option F
    91
  - Option GP
    92
  - Option M
    92
  - Option PH
    92
  - Table 4-16: Connector J303 Functions
    92
  - Option STE (9390 Only)
    93
- Accessories
  94
Maintenance

97
- General
  97
  - CMOS Devices
    97
  - Circuit Boards
    98
  - Transmitter Precautions
    99
  - Probe Precautions
    100
  - Surface Mounted Components
    100
- Dismantling and Assembling
  101
  - Top and Bottom Covers
    101
  - Rx/Exciter PCB
    102
  - Microprocessor and Audio PCB
    102
  - PA and Filter Assembly
    102
  - Front Panel
    104
  - Control Head
    105
- Fault Diagnosis
  106
  - General
    106
- Table 4-20: RS232/IC Interface Addresses
  
  107
- Table 5-1: Display Panel PCB Supply Voltages
  107
- Table 5-2: Microprocessor and Audio PCB Supply Voltages
  107
- Table 5-3: Rx/Exciter PCB Supply Voltages
  107
- Voltage Measurements
  107
- No Reception
  108
- Table 5-4: PA & Filter PCB Supply Voltages
  108
- No Transmit
  109
- Unlocked Synthesiser
  109
- PA Failure
  110
- Table 5-5: Peak to Peak Voltages
  110
- Replacement of PA Transistors
  111
- Control Keypad
  112
- Displayed Error Messages
  112
- Table 5-6: Keypad Connections
  112
Channel Additions

115
Adjustments

123
- Introduction
  123
- Test Equipment Required
  124
- Voltage Regulators
  125
- Crystal Oven
  126
- Test Mode
  127
  - Accessing Test Mode
    128
- Figure 7-1: Link 1 Position
  
  128
- Test Channels for 2.0 to 26.5 Mhz PA Assembly
  129
- Test Channels for 2.25 to 30 Mhz PA Assembly (1.6 to 30 Mhz with Option LF Fitted)
  130
- VCO Checks and Adjustments
  132
  - VCO1 Check
    132
  - VCO2 Check
    132
  - VCO2 Adjust
    133
- HPF/LPF Filter Alignment
  134
  - HPF Filter
    134
  - LPF Filter
    135
- 45 Mhz Filter Alignment (08-04962)
  136
  - Alignment-Method 1
    136
  - Alignment-Method 2
    137
- 45 Mhz Filter Alignment (08-05322)
  139
  - Alignment-Method 1
    139
  - Alignment-Method 2
    140
- 455 Khz if and Noise Limiter Alignment
  141
- Exciter Output Transformer Balance
  142
- Frequency Adjustment
  143
  - Frequency Adjust USB
    143
  - Frequency Adjust LSB
    143
- Mute Adjustment
  144
- PA Adjustments
  145
  - Driver Bias
    145
  - PA Bias
    145
  - Output Power
    146
  - Output Power 27 Mhz Band (9323 Only)
    147
  - Intermodulation
    148
- Receiver Performance Checks
  150
  - Sensitivity and (S+N)/N Ratio
    150
  - AGC Check
    150
  - Audio Output
    151
  - Selectivity (USB Operation)
    151
  - Clarifier Operation
    151
  - Noise Limiter Operation
    152
  - Transmitter Performance Checks
    153
    
    Frequency Check
    153
    
    Alc
    153
    
    Power Output and Intermodulation
    153
    
    Emergency Call (9323 Only)
    154
Parts List

155
- General Information
  155
  - Ordering Information
    156
  - Component Substitution
    156
  - Parts List
    156
Drawings

157

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