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15.3. Error Measurement 25
15.4. Adjustment 26
16. Scan Mode (Grid Mode) / Run Mode (NMEA Mode) 28
17. Survey Mode (Grid Mode) 29
17.1. Survey Parameters 29
17.2. Single and Multiple Sensors 30
17.3. Surveying at 1 line/m 35
17.4. Surveying at 2 or 4 lines/m 35
18. Survey Operation (Grid Mode) 39
18.1. Interrupting a Survey 40
19. Downloading Survey Data to a PC 42
19.1. Installing the Grad601 Datalog Software 43
19.2. Running the Program 43
19.3. The Save Screen 44
19.4. File Formats 45
20. Serial Output 47
20.1. Data Format 47
20.2. Markers 47
20.3. Transmission Format 48
21. Troubleshooting 49
21.1. Adjusting the Gradiometer 49
21.2. Datalogger 50
22. Care and Maintenance 52
23. End of Life Disposal 53
23.1. Waste Electrical and Electronic Equipment (WEEE) Regulations 53
Appendix: Practical Aspects of Surveying 54
A.1. Conventions 54
A.2. Planning the Survey 54
A.3. Gridding Data 55
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