EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Downloading and Saving Data from the CTD-N ........................................................................................................................ 53
Exporting and Viewing Saved Data ........................................................................................................................................... 55
Exporting Saved Data ......................................................................................................................................................... 56
Viewing Data That Have Been Exported to a Text File ....................................................................................................... 57
Displaying, Printing, and Saving Graphs ................................................................................................................................... 58
Displaying Data versus Pressure or Time ........................................................................................................................... 59
Viewing Data on a Graph ................................................................................................................................................... 59
Zooming in and Out of a Graph .......................................................................................................................................... 60
Setting up a Graph ............................................................................................................................................................. 60
Saving a Graph ................................................................................................................................................................... 62
Previewing and Printing a Graph ........................................................................................................................................ 63
Viewing File Information .................................................................................................................................................... 63
Erasing All the Data Files .......................................................................................................................................................... 64
Acquiring, Displaying, and Saving Data in Real Time ............................................................................................ 66
Starting Data Acquisition .......................................................................................................................................................... 66
Stopping Data Acquisition ........................................................................................................................................................ 69
Viewing Saved Data .................................................................................................................................................................. 69
CTD-N Acquisition Window Displays ........................................................................................................................................ 70
CTD-N Maintenance ............................................................................................................................................. 71
Recommended Maintenance ................................................................................................................................................... 71
Cleaning and Inspecting the CTD-N .......................................................................................................................................... 72
Replacing the Battery Pack ....................................................................................................................................................... 74
Oil Fill Procedure and Capillary Tube Installation ..................................................................................................................... 78
Installing a CTD-N End Cap Switch Kit ....................................................................................................................................... 81
Firmware Updates .................................................................................................................................................................... 82
APPENDIX A: Measured and Calculated Parameters ........................................................................................... 85
Parameters Measured by the CTD-N ........................................................................................................................................ 85
Parameters Calculated by the CTD-N ....................................................................................................................................... 85
Parameters Calculated by CTDPro ............................................................................................................................................ 86
APPENDIX B: Bulkhead Connector Wiring ........................................................................................................... 87
APPENDIX C: Optional Sensors ............................................................................................................................ 91
Seapoint Turbidity Sensor ........................................................................................................................................................ 95
Selecting the Range for the Seapoint Turbidity Sensor ...................................................................................................... 95
Calibrating the Seapoint Turbidity Sensor .......................................................................................................................... 97
Seapoint Fluorometer Sensor ................................................................................................................................................... 98
Selecting the Range for the Seapoint Fluorometer Sensor ................................................................................................ 98
Calibrating the Seapoint Fluorometer Sensor .................................................................................................................... 99
Calibrating the External Sensors ............................................................................................................................................. 100
APPENDIX D: CTD-N Commands ........................................................................................................................ 103
CTD-N Operating Modes......................................................................................................................................................... 103
Command Properties .............................................................................................................................................................. 103
Entering Commands ............................................................................................................................................................... 104
START .............................................................................................................................................................. 108
***R ................................................................................................................................................................ 109
***O ............................................................................................................................................................... 110
***C ................................................................................................................................................................ 111
***I ................................................................................................................................................................. 112
***D ................................................................................................................................................................ 113
***E ................................................................................................................................................................ 114
CDATE ............................................................................................................................................................. 115
SRATE .............................................................................................................................................................. 116
DTIME ............................................................................................................................................................. 117
DDATE ............................................................................................................................................................. 118
ITIME ............................................................................................................................................................... 119
OTIME ............................................................................................................................................................. 120
