Intelligent Gyro Compass (iGC)
0707-SOM-00004-7
3
© Tritech International Ltd.
Table of Contents
Help & Support ........................................................................................................... 5
Warning Symbols ........................................................................................................ 6
1. Safety Notices ........................................................................................................ 7
1.1. General ....................................................................................................... 7
1.2. Pressure ...................................................................................................... 7
1.3. Electrics ....................................................................................................... 8
2. Introduction ............................................................................................................. 9
2.1. Intelligent Gyro Compass (iGC) .................................................................... 9
2.2. Intelligent Fibre-optic Gyro (iFG) ................................................................. 10
2.3. Intelligent Interface PCB (iIF) ...................................................................... 10
3. Typical Applications ............................................................................................... 11
4. Installation ............................................................................................................ 14
4.1. Safety Note ................................................................................................ 14
4.2. iGC Mechanical Installation ......................................................................... 14
4.2.1. Introduction ..................................................................................... 14
4.2.2. Magnetic Disturbance ...................................................................... 14
4.2.3. Alignment ........................................................................................ 14
4.2.4. Stiffness .......................................................................................... 15
4.2.5. Collision Protection .......................................................................... 15
4.3. Installation Drawing .................................................................................... 15
4.4. iGC Electrical Installation ............................................................................ 15
4.4.1. Preparation ...................................................................................... 15
4.4.2. Adjusting iGC Mode or Jumpers ....................................................... 17
4.5. Electrical Installation ................................................................................... 18
5. Commissioning ...................................................................................................... 20
5.1. General ...................................................................................................... 20
5.2. Overview .................................................................................................... 20
5.3. Powering up for the first time ...................................................................... 20
5.4. Checking iGC output using a terminal programme ........................................ 21
5.5. Checking iGC output on an RS485 interface ................................................ 22
5.6. iGC data Check procedures ........................................................................ 22
5.6.1. Heading Checks .............................................................................. 23
5.6.2. Pitch & Roll Checks ......................................................................... 23
5.6.3. Heave Acceleration Data Checks ..................................................... 23
5.6.4. Water Ingress Alarm Checks ............................................................ 23
5.6.5. Other Data Checks .......................................................................... 24
6. Calibration ............................................................................................................ 25
6.1. Introduction ................................................................................................ 25
6.2. Physical Offsets ......................................................................................... 25
6.3. Magnetic Offsets ........................................................................................ 25
7. Operation .............................................................................................................. 27
7.1. Introduction ................................................................................................ 27
7.2. Data Output Formats .................................................................................. 27
7.2.1. Proprietary Outputs .......................................................................... 27
7.2.2. Industry Standard Outputs ............................................................... 27
7.2.3. Special Modes ................................................................................. 27
7.3. Operational Issues ..................................................................................... 28
7.4. Using iGC Navigation Software ................................................................... 28
8. Maintenance ......................................................................................................... 31
8.1. Safety ........................................................................................................ 31
8.2. General ...................................................................................................... 31
8.3. Seals ......................................................................................................... 31
8.4. Basic Maintenance Procedure ..................................................................... 31
8.4.1. Pre and Post Dive Checks ............................................................... 31
8.4.2. Storage ........................................................................................... 32
