Furuno CH-14 Manuals

Manuals and User Guides for Furuno CH-14. We have 1 Furuno CH-14 manual available for free PDF download: Service Manual

Furuno CH-14 Service Manual (192 pages)

color ppi sonar

Brand: Furuno | Category: Sonar | Size: 10 MB

Parts List
4
Discrepancy between Actual Wiring and Service Manual Diagram
9
Contents
12
Schematic Diagrams
15
Notes
16
In-Air Operation
16
Dummy Load
16
Soundome Support
16
Logic Probe
17
CH-14 Vs CH-16
18
Module Compatibility
18
Specifications
19
Equipment List
21
Accessories
21
Installation Materials
22
Spare Parts
22
Circuit Descriptions
23
Scan Line Direction
23
Random Logic IC's
23
System Overview
24
Cyclic Sonar Operation
24
Screen Refresh
25
Transmission
26
Generating KP
26
Transmitter
26
Output Power Control
26
Reception
28
Receiver Amplifier
28
AGC Circuit
28
TVG Circuit
30
Echo Acquisition
31
VCA Control
31
PPI Frame Buffer Memory Write by CPU
33
Chip Select
33
Address Multiplex
34
Memory Write
34
Echo Processing CPU
35
Echo Processing and Polar to X-Y Coordinate Conversion
36
Memory Refresh
36
Frame Buffer Memory Read for Screen Refresh
39
Horizontal Timings and Screen Layout
39
Serial Output of Frame Buffer Memory
42
Parallel Transfer to Row Buffer Register
42
Historical Picture Presentation
43
Serial Output Control of Ppi/Historical Picture Ram's
45
Serial Output Control of Character RAM
45
RGB and Synchro Signals
46
Monitor Interface
48
Separation of HV Synchro Signals
48
Extension of Vertical Blanking Period
49
Color Monitor Display
50
Outline
50
Pedestal Level Restoration
50
H/V Blanking
50
Audible Sound
54
Panel Switch/Control Status Read
54
Raising/Lowering Soundome
56
Dimmer
56
Raise Operation
56
Lower Operation
56
Transducer Tilting
57
Drive Side
57
Feedback Side
58
Control by CPU
58
Power-On Initialization
59
Automatic Transducer Stabilization
60
Transducer Training
62
Power on Initialization
62
Power Supply Control for Tilt/Train Motors
64
Interrupt
65
Polling
65
Display Power Supply
66
Overvoltage
66
Overcurrent
66
Outline of Switching Regulator
68
Circuit Board
70
Transceiver Power Supply
71
Negative Feedback
71
Overvoltage Protection
71
Overcurrent Protection
72
Protection against Ship's Mains Overvoltage
72
Igniting PWM Regulator
72
Ceasing Oscillation of PWM Regulator
72
LSI Principle Summary
74
Programmable Communication Interface
74
TX Buffer
74
RX Buffer
74
Application
77
Programmable Interval Timer
78
Hardware Triggered One Shot
79
Rate Generator
79
Square Wave Rate Generator
79
Software Triggered Strobe
80
Hardware Triggered Strobe
80
Programmable Peripheral Interface
82
Strobed Input/Output
82
Bi-Directional Buffer
83
Adjustment of Preset Controls
84
CH-14 Display Power Supply
84
CH-16 Display Power Supply
84
CH-14 Screen and Brilliance
85
Interference Rejection
88
Preparation
90
Adding Main Bang to Audible Sound
91
Specification Alteration
92
Changing Operating Specifications
92
Internal Switch
92
Changing Stroke of Transducer Travel
93
Clinometer Adjustment
94
Connecting the Monitor Display
95
Frequency Alteration
95
Maintenance
96
Lubricating the Hull Unit
96
Cleaning Retraction Tank
97
Replacement of Grease Cotton Pieces
98
Troubleshooting
99
Diagnostic Self-Check
99
Display Unit Check
99
Hull Unit Check
100
Troubleshooting Flow Chart
101
Static Response of Receiver + Display
117
Modification to TRX Board
117
AGC Function Check
119
Soundome Check Without Dry-Docking
120
LED Status Chart
122
Waveform Chart
124
Control Signals
128
Audible Signal
131
Echo Acquisition Timings
133
Frame Buffer Memory Write by CPU
134
Frame Buffer Read for Screen Refresh
135
Parallel Transfer Timings
137
Memory Refresh Timings
139
Vertical Timings
139
RGB Signals
140
Power Supply
142
Disassembling Soundome and Tilt/Bearing Alignment
145
Transdcuer
145
Tilt Gear Box
145
Transducer Slip-Ring
146
Removing the Slip-Ring Assembly
147
Bearing/Tilt Rotary-Encoder Alignment
148
Tilt Rotary-Encoder Alignment
148
Fixing Train Photo Interruptor Pcb's
149
Electrical Parts List
151
Mechanical Parts List
167

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