Banner DF-G1-PR-Q7 manuály

Cable Survey System

1

System Manual

1

GLOSSARY

13

AMENDMENTS

14

1 INTRODUCTION

16

1.1 SYSTEM DESCRIPTION

20

1.2 PRINCIPLE OF OPERATION

21

1.3 QUICK START FOR SDC USERS

22

1.4 WARRANTY

22

2 SYSTEM OVERVIEW

24

2.1 SCOPE OF DELIVERY

25

2.2 UNPACKING AND INSPECTION

27

2.3 SURFACE COMPONENTS

28

Figure 2–3: SDC Display

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Figure 2–4: SDC PC Console

29

2.4 SUB-SEA COMPONENTS

32

2.4.1 Sub-sea Electronics Pod

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❐ Power/comms

33

❐ Altimeter

33

❐ Aux Output

33

❐ Sensor

33

2.4.2 Sensing Coils

34

2.4.3 Altimeter

36

❐ Tracked ROVs or crawlers

37

❐ Trenching ploughs

37

❐ Towed sleds

37

3 PHYSICAL INSTALLATION

38

3.1 SDC INSTALLATION

39

3.2 SUB-SEA INSTALLATION

40

3.2.1 SEP

40

3.2.2 Sensing Coils

42

3.2.2.1 Assembling the Coils

43

3.2.2.2 Mounting the Coils

46

3.2.3 Altimeter Installation

48

3.3 INSTALLATION CHECK LIST

50

4 ELECTRICAL INSTALLATION

52

4.1 SUB-SEA COMPONENTS

53

4.1.1 Ground Connections

54

4.1.3 Sub-sea Electronics Pod

55

4.1.3.1 Power Requirement

56

4.1.4 Sensing Coils

58

4.1.5 Sub-sea Altimeter

59

4.1.5.2 Connection to the SDC

60

4.1.6 Roll/Pitch Sensor

61

4.2 SURFACE DISPLAY COMPUTER

62

4.2.1 Power Connection

62

4.2.4 Interface to Video

68

5 SYSTEM CONFIGURATION

70

5.1 SOFTWARE INSTALLATION

71

5.2 POWER-ON PROCEDURE

72

5.3.1 SEP type

74

5.3.2 Communication ports

75

5.4 PRINT CONFIGURATION

77

5 – System Configuration

78

6 OPERATION SOFTWARE

80

ONFIGURATION

81

6 – Operation software

84

6.2.1.2 Run/ Display screen

87

the centre line. Measure

89

❐ Communication status

90

❐ System time

90

❐ System errors

90

6.2.1.3 Forward Search Screen

91

6.2.1.4 Other Windows

93

❐Yellow indicates an event

95

6.2.1.5 Configuration Options

97

6.2.2 Survey Parameters

97

6.2.2.1 Altimeter

99

6.2.2.2 External Data Logging

101

6.2.2.3 Load Factory Defaults

102

6.2.2.4 Video Overlay Setup

102

350 Cable Survey System

105

6.3 AFTER THE DIVE

107

6.4 REPLAYING A LOG FILE

108

6.5 QUALITY CONTROL

110

7 OPERATING PROCEDURE

112

7.1 BEFORE THE SURVEY

113

7.1.2 Tone Frequency

114

7.1.3 Survey Requirements

114

7.2 DURING THE SURVEY

115

7.2.2 Data Logging

117

7.2.3 Replay Logged Data

118

7.3 DATA FORMATS

119

7.3.1 External Logging Format

119

7.3.1.2 Forward Search mode

121

❐The target is out of range

122

7.3.2 Internal Logging Format

123

7.3.3 Altimeter Data Format

125

7.3.3.3 Simrad UK90

127

7.4 AFTER THE SURVEY

130

7.5.1 Operating Performance

131

7.5.2 Sources of Error

132

7.5.2.1 ROV Handling

132

Figure 7–3: ROV roll errors

134

Figure 7–4: Sloping target

136

❐ Changes of ROV heading

137

❐ Acoustic noise

137

Figure 7–5: Curved target

139

7.6 ROVS

140

7.6.1 Speed of Operation

140

7.6.3 Tracked ROV

140

8 SYSTEM SPECIFICATIONS

142

8.1 SPECIFICATIONS

143

8 – System Specifications

144

8.1.2 Sub-sea Electronics Pod

145

8.1.3 Search Coil Array

145

8.2 PERFORMANCE

146

8.3 SYSTEM TRIALS

147

8.3.2 Results

149

8.3.2.1 Accuracy

149

8.4 UPDATE RATE

150

9 MAINTENANCE

152

9.1 CIRCUIT DESCRIPTION

153

9.1.1 Sensing Coils

154

9.1.2 Sub-sea Electronics Pod

155

9.1.2.2 Processor Board

156

9.1.2.3 Power Supply

158

9.1.3 Current Loop

158

Page 8 of 26

159

9.2.2 Sub-sea Electronics Pod

160

❐ A 2.5mm hexagonal key

161

Processor Board

162

ADC Board

163

9.2.3 Coil Cable Continuity

166

9.3 FAULT IDENTIFICATION

167

9 – Maintenance

168

9.3.2 Communications Failure

169

Page 20 of 26

171

9.3.4 Altimeter Failure

173

Page 24 of 26

175

Page 26 of 26

177

10 SYSTEM DRAWINGS

178

10 – System Drawings

180

A OPERATING THEORY

192

A.1 ELECTROMAGNETIC FIELDS

193

A.2 FIELD DETECTION

193

A.3 SIGNAL ISOLATION

194

A.4 CALCULATION

195

A.4.1 Survey Mode

196

A.4.2 Forward Search Mode

198

A.4.3 Skew Measurement

199

B OPTIONS

202

B.1 DUALTRACK SYSTEM

203

B.1.1 The Equipment

203

B.1.2 The Differences

204

B.1.3 Scope of Delivery

205

B.1.4 Physical Installation

207

B.1.4.1 Search-coils

207

B.1.4.2 Sub-sea Pods

207

B.1.5 Electrical Connection

208

B.1.5.1 System Configuration

210

B.1.5.2 System Operation

211

B.2 TRAINING

212

C CABLES AND TONES

214

C.1 TONE INJECTION

215

C.1.1 Frequency Selection

215

C.1.2 Connection to the cable

215

C.1.2.1 Short cables

215

C.1.2.2 Long cables

216

C.1.2.3 Fibre-optic Cables

216

C.1.3 Seawater Return Path

217

D ALTIMETER

218

D.2 INSTALLATION

219

D.2.1 Electrical Connection

219

D.2.2 Serial Output

219

D.2.3 Mounting

220

D.2.4 Maintenance

221

D.2.5 Test in Air

221

D.2.6 Internal Settings

221

D.3 THEORY OF OPERATION

222

D.3.1 Operating Principles

222

D.3.1.1 Speed of Sound

223

D.3.1.2 Terminology

223

D.3.1.3 Propagation Loss

224

D.3.1.4 Limitations

224

D.3.2 Technical Description

225

D.3.2.1 Power Supply

225

D.3.2.2 Transmitter

226

D.3.2.3 Receiver

226

D.3.2.4 Sensor Circuitry

227

D.3.2.5 Digital Circuitry

227

D.3.2.6 Averaging Algorithm

228

D.3.2.7 Optional Modem

228

D.4 PART NUMBERS

228

D.5 DRAWINGS

229

D – ALTIMETER

230

E COIL TESTER

236

E.1 PRE-OPERATION

238

E.2 OPERATION

240

E.2.1 Frequency Selection

242

E.3 FAULT IDENTIFICATION

243

E.4 BATTERY REPLACEMENT

243

E.5 MAINTENANCE

244

E.6 SPECIFICATION

244

F REFERENCE

246

F.1 SURVEY DETAILS

248

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