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Citadel CTD-N Series Technical Manual

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CTD-N
CTD-NV, CT-NV, CTD-NH, and CT-NH
Technical Manual
P/N 95F-6000-00 (February 2017)
© 2017 Teledyne RD Instruments, Inc. All rights reserved.
Information included herein is controlled by the Export Administration Regulations (EAR) and may require an export license, license
exception or other approval from the appropriate U.S. Government agency before being exported from the United States or provided to
any foreign person. Diversion contrary to U.S. law is prohibited.

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  • Page 1 CTD-N CTD-NV, CT-NV, CTD-NH, and CT-NH Technical Manual P/N 95F-6000-00 (February 2017) © 2017 Teledyne RD Instruments, Inc. All rights reserved. Information included herein is controlled by the Export Administration Regulations (EAR) and may require an export license, license exception or other approval from the appropriate U.S. Government agency before being exported from the United States or provided to any foreign person.
  • Page 2 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 3: Table Of Contents

    Table of Contents Introduction ................................1 Maximum Operating Depth ................................ 1 System Configuration Requirements ............................2 Pull-Down Menus ..................................2 Customer Service ..................................3 Main External Components ................................ 4 CTD-N Options .................................... 7 Specifications ....................................8 Outline Installation Drawings ..............................10 Unpacking the CTD-N and Connecting It to Your Computer .................
  • Page 4 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 ...........................
  • Page 5 RCAL ................................121 CCKO, RCKO, SCKO ............................122 CSOT, RSOT, SSOT ............................123 CCOP, RCOP, SCOP ............................124 SB ..................................125 MODE ................................126 CAOP, RAOP, SAOP, #N ........................... 127 TIME ................................129 DATE ................................130 DIAG ................................131 ZMEM ................................132 FDMP ................................
  • Page 6 Figure 14. Run Time Diagram, Including Average Times, for One Interval Time Cycle ......... 26 Figure 15. The Advanced Settings Dialog Box ..................... 27 Figure 16. The Battery Life Dialog Box—Entering the Battery Pack Capacity Sample Rate and Average Times Figure 17.
  • Page 7 Table 3: Bulkhead Connector Components ....................87 Table 4: Pigtail Color Codes/Functions ....................87 Table 5: CTD-N Bulkhead 4-pin Connector to Computer Connections ............. 88 Table 6: CTD-N Bulkhead 4-pin Connector to Power Supply Connections ..........88 Table 7: CTD-N 6-pin Bulkhead Connector to Computer Connections ............. 88 Table 8: CTD-N 6-pin Bulkhead Connector to Power Connections ............
  • Page 8 • Corrected how to request a Return Material Authorization (RMA). • Removed the CTD-N C-Cell Battery Holder section; this option is not available. • The instrument is capable of storing 17 separate files, not 22 as shown on page 49 •...

  • Page 9: Introduction

    CTD-N Technical Manual CTD-N Technical Manual Introduction The Teledyne RD Instruments CTD-N (includes CTD-NV, CT-NV, CTD-NH, and CT-NH models) is a ruggedized, extremely durable sensor that is designed to collect high precision, scientific quality salinity data by measuring conductivity, temperature, and pressure. The instrument measures con- ductivity using a patented inductively coupled highly stable NXIC (Non-eXternal Inductive Conduc- tivity) sensor that is designed for long term, low maintenance deployments, even in coastal regions where biological fouling is a problem.

  • Page 10: System Configuration Requirements

    CTD-N Technical Manual its maximum operating depth. Do not exceed 125% of full scale when using or calibrating the in- strument as permanent damage will occur. CAUTION Contents May be Under Pressure. Refer to Operator’s Manual Prior to Servicing. Caution label on housing 90Z-6038-00 CAUTION.

  • Page 11: Customer Service

    CTD-N Technical Manual Customer Service TRDI welcomes your feedback. Please contact TRDI customer service to offer any comments or sug- gestions or to request technical support. TRDI can be contacted using any of the following means: Teledyne RD Instruments Teledyne RD Instruments Europe 14020 Stowe Drive 2A Les Nertieres Poway, California 92064...

  • Page 12: Main External Components

    CTD-N Technical Manual Main External Components The main external components of the CTD-NV are shown in Figure 1. The conductivity, tempera- ture, and pressure sensors are located on the top end cap. The conductivity sensor is free flushing with no exposed electrodes that can foul or external fields that can affect calibration. The tempera- ture sensor is aged and therefore highly stable and is directly in the water flow path of the conduc- tivity sensor.

  • Page 13: Figure 2. The Location Of The Ctd-Nh Main External Components

    CTD-N Technical Manual Figure 2. The Location of the CTD-NH Main External Components NOTE. Shown with optional wire bail and with the oil capillary tube installed. The tube extends 1.47 inch from the housing. Make sure that the tube is not blocked when mounting the CTD. P/N 95F-6000-00 (February 2017) page 5 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 14: Figure 3. The Location Of The Ct-Nh Main External Components

    CTD-N Technical Manual Shown With Optional External 3/16” Wire Sensor Interface Bail Connectors Housing Housing Mounting Clamps (2) Bio-fouling Resistant Copper Screens Figure 3. The Location of the CT-NH Main External Components NOTE. Shown with optional wire bail. page 6 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 15: Ctd-N Options

    CTD-N Technical Manual CTD-N Options Depth Rating – CTD-N units are available with the following depth rating: 500 meter (Delrin housing), 2000 meter (Aluminum housing), or 7000 meter (Titanium housing). Pressure Sensor – The pressure sensor is available in the following ranges (in meters): 20, 100, 200, 350, 500, 667, 1000, 2000, 3000 or 7000.

  • Page 16: Specifications

    CTD-N Technical Manual Specifications Below are the general specifications for the CTD-N along with the specifications for the conductiv- ity, temperature, and pressure sensors. NOTE. These specifications are subject to change without notice. General Power requirements: Internal battery pack or 7–35 VDC @ 500 mA maximum when ex- ternally powered 11 VDC nominal @ 50 mA maximum for any sensor;...
  • Page 17 CTD-N Technical Manual Conductivity Sensor type: Non-external inductive cell Operational Range: 0 to 70 mS/cm Typical Accuracy: ±0.003 mS/cm @ 35 PSU, 22°C Typical Drift: 1,2,3 ±0.001 mS/cm/month Thermal Stability ±.003 mS/cm/°C; Δ°C rel. to 22 °C (typical) Resolution: 0.0001 mS/cm Specified at 22°C and 35PSU - Defined as the root sum of the squares (RSS) of endpoint non-linearity, repeatability error and calibration uncertainty.

  • Page 18: Outline Installation Drawings

    CTD-N Technical Manual Outline Installation Drawings Figure 4. Outline Installation Drawing, CTD-NV & CT-NV, NXIC Vertical page 10 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 19: Figure 5. Outline Installation Drawing, Ctd-Nh & Ct-Nh, Nxic Horizontal

    CTD-N Technical Manual Figure 5. Outline Installation Drawing, CTD-NH & CT-NH, NXIC Horizontal P/N 95F-6000-00 (February 2017) page 11 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 20: Unpacking The Ctd-N And Connecting It To Your Computer

    CTD-N Technical Manual Unpacking the CTD-N and Connecting It to Your Computer Before deploying a CTD-N, it must be connected to an available serial port of a computer running CTDPro and configured for deployment. It is also required to connect the instrument to the com- puter when downloading data.

  • Page 21: Optional Items

    CTD-N Technical Manual Self-Contained Units: • Dummy connector and locking sleeve • Spare O-rings • Spare mounting hardware • Alkaline battery pack Direct Reading Units • Pigtail and locking sleeve NH Units • Spare antifouling screens • Spare PVC collars for antifouling screens Optional Items Optional items typically include the following: •...

  • Page 22: Selecting The Ctd-N

    CTD-N Technical Manual 3. Click on the CTD-N button and then click on the CTDPro Software button. This will start the software installation. Selecting the CTD-N To select the CTD-N: 1. Choose Start ➤ All Programs ➤ RD Instruments ➤ CTDPro. CTDPro starts and the CTDPro Main window opens.

  • Page 23: Rs-485 Interface Option

    CTD-N Technical Manual RS-485 Interface Option Systems ordered with an RS485 are capable only of RS485 communication and will require use of an external RS485/RS232 converter for communication with a computer. A converter can be or- dered separately from TRDI or procured independently. CMOS Interface Option The optional CMOS serial interface provides TTL level signal outputs.

  • Page 24: Using The Ctd-N End Cap Switch

    CTD-N Technical Manual Figure 7. CTD-N Setup—with RS-232 Interface Using the CTD-N End Cap Switch In a standard CTD-N, the battery is always powered. The CTD-N Battery Switch End cap allows the user to manually remove power when the unit is in between uses. This switch can only be used in the following modes;...

  • Page 25: Connecting To The Rs-485 Interface

    CTD-N Technical Manual Figure 8. CTD-N Setup with B176-207 Battery Adapter Cable Connecting to the RS-485 Interface A CTD-N with an RS-485 interface is shown set up with a laptop computer in Figure 9. To connect a CTD-N with an RS-485 interface to your computer: 1.

  • Page 26: Changing The Serial Port

    CTD-N Technical Manual 5. Connect the AC line cord to the power supply and to a 110–240 VAC, 50–60 Hz power source. Figure 9. CTD-N Setup—with RS-485 Interface Changing the Serial Port The default serial port for CTDPro is COM1. However, any one of 16 serial ports from COM1 to COM16 can be selected.

  • Page 27: Changing The Baud Rate

    CTD-N Technical Manual Figure 10. The Communication Properties Dialog Box Changing the Baud Rate The default baud rate for the CTD-N and CTDPro is 9600 bits/sec with one stop bit, eight data bits and no parity. However, you can use CTDPro to change the baud rate at which the computer and the instrument communicate in the following three ways: where CTDPro changes the baud rate of the com- Change the baud rate of the serial port...

  • Page 28: Automatically Changing The Baud Rate Of The Serial Port To The Baud Rate Of The Ctd-N

    CTD-N Technical Manual Automatically Changing the Baud Rate of the Serial Port to the Baud Rate of the CTD-N To automatically change the baud rate of the serial port to the baud rate of the CTD-N: 1. Choose Start ➤ All Programs ➤ RD Instruments ➤ CTDPro. CTDPro starts and the CTDPro Main window opens.

  • Page 29: Connecting And Setting Up Communications With A Gps

    CTD-N Technical Manual Figure 11. The Communication Rate Dialog Box 4. Click OK to save the baud rate selection and close the Communication Rate dialog box. Connecting and Setting up Communications with a GPS If you have a global positioning system (GPS), you can connect it to your computer. With the GPS connected you can have CTDPro include the latitude, longitude, and time of day with the data.
  • Page 30 CTD-N Technical Manual 3. Select the serial port to which the GPS is connected from the Communication Port drop- down list box. 4. Select the baud rate for the serial port from the Baudrate drop-down list box. The default baud rate is 4800 bits/sec and is typically the baud rate used. 5.

  • Page 31: Checking, Configuring, & Deploying The Ctd-N

    CTD-N Technical Manual Checking, Configuring, & Deploying the CTD-N You can configure and deploy the CTD-N under its own internal battery power and store all the data in the instrument’s internal memory. After recovering the instrument, you can retrieve and save the data.

  • Page 32: Running Modes

    CTD-N Technical Manual Figure 13. The CTD-N Configuration Dialog Box Running Modes There are four running modes for acquiring and storing data: Continuous mode is where data are continuously acquired and stored at the selected sam- pling rate. This mode is recommended only for short deployments as it quickly depletes the battery pack and fills memory.

  • Page 33: Averaged Data

    CTD-N Technical Manual Interval Time: The time in hours, minutes, and seconds between the start of each Record Time. Record Time: The time in hours, minutes and seconds beginning at the start of each Interval Time during which the instrument is on and col- lecting data.

  • Page 34: Time And Date

    CTD-N Technical Manual Figure 14. Run Time Diagram, Including Average Times, for One Interval Time Cycle Time and Date The CTD-N time and date are displayed in the CTD Time and CTD Date displays in the CTD-N Con- figuration dialog box. The time and date can be reset at any time to that of the computer on which CTDPro is running by clicking Set Time Date.

  • Page 35: Communications Options

    CTD-N Technical Manual Communications Options Communications options can be selected in the Advanced Settings dialog box shown in Figure 15. To open the Advanced Settings dialog box, choose CTD ➤ Communications ➤ Advanced Settings. Figure 15. The Advanced Settings Dialog Box The Advanced Settings dialog box allows you to modify the standard operation of the CTD-N, in- cluding some hardware functions and the data output format.

  • Page 36: Predeployment Checks

    CTD-N Technical Manual CMAN (Coastal Marine Automated Network) Format 2 uses CMAN Format 2 formatting. CT Format uses standard CT data output formatting. CMAN (Coastal Marine Automated Network) Format 3 uses CMAN Format 3 formatting. CMAN (Coastal Marine Automated Network) Format 4 uses CMAN Format 4 formatting.

  • Page 37: Figure 16. The Battery Life Dialog Box-Entering The Battery Pack Capacity Sample Rate And Average

    CTD-N Technical Manual The Battery Life dialog box shown in Figure 16 opens. Figure 16. The Battery Life Dialog Box—Entering the Battery Pack Capacity Sample Rate and Average Times 4. If you want to enter the battery pack capacity directly, enter it in percent in the Battery Ca- pacity scroll box in the Battery Properties area of the Battery Life dialog box.

  • Page 38: Figure 17. The Battery Life Dialog Box-Selecting The Running Mode

    CTD-N Technical Manual 7. In the Average Time area, use the up and down arrows in the Length scroll box to enter the Average Time in minutes and seconds (mm:ss). 8. Click Next. The Battery Life dialog box shown in Figure 17 opens. Figure 17.

  • Page 39: Figure 18. The Battery Life Dialog Box-Deployment Summary

    CTD-N Technical Manual The Save As dialog box for battery pack information files shown in Figure 19 opens. This dialog box is used to create the file in which to save the battery pack and memory infor- mation. 13. Click the arrow in the Save in drop-down list box and select the folder in which to save the battery pack information file.

  • Page 40: Running The Diagnostic Tests

    CTD-N Technical Manual Figure 19. The Save As Dialog Box for Battery Pack Information Files Running the Diagnostic Tests Before deploying the CTD-N you should run the diagnostic tests on the instrument. These tests are provided by CTDPro and encompass pass/fail checks of the conductivity, pressure and temperature readings of the analog-to-digital converter (A/D);...

  • Page 41: Figure 20. The Diagnostics Dialog Box

    CTD-N Technical Manual NOTE. Windows 7® will not save any data files to the folder selected in the dialog box. Instead it saves to the desktop by default. This is a known bug that will be addressed in a future release of CTDPro. 7.

  • Page 42: Figure 21. Save As Dialog Box For Diagnostics Data Files

    CTD-N Technical Manual Figure 21. Save As Dialog Box for Diagnostics Data Files Figure 22. Results of Diagnostic Testing in the Diagnostics Dialog Box After diagnostic testing is complete, the diagnostics data is saved in the diagnostics data file. The file can later be opened in any text editor for viewing and printing. page 34 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
  • Page 43 CTD-N Technical Manual 8. Note: The Loop Test was partially implemented for long term stability testing of CTDs for factory use, it is not intended as a verification of calibration and should not be used as such. TRDI does not supply or support the resistance test device. 9.

  • Page 44: Configuring And Deploying The Ctd-N

    CTD-N Technical Manual Configuring and Deploying the CTD-N The CTD-N is configured and deployed in one of the four running modes: Continuous, Interval, De- layed Start Continuous, or Delayed Start Interval. In addition, in all modes you can select to average the data over the Average Time.
  • Page 45 CTD-N Technical Manual 8. In the Running Mode area of the CTD-N Configuration dialog box, select Continuous. 9. In the CTD Sampling Rate area, select the desired sampling rate in hertz of the CTD-N from the drop-down list box. 10. In the Average Time area, use the up and down arrows in the Length scroll box to enter the Average Time in minutes and seconds (mm:ss).

  • Page 46: Configuring And Deploying The Ctd-N In Interval Mode

    CTD-N Technical Manual 14. Enter the data file name (10 characters maximum) in the Enter the filename to store the CTD data text box, and then click OK. The Continuous window opens indicating that the CTD is running in Continuous mode: 15.
  • Page 47 CTD-N Technical Manual 5. Click Yes to stop data logging, or click No to continue. If you click No, the window closes and data acquisition continues without interruption. If you click yes, data logging stops, the window closes and the CTD-N Configuration dialog box shown in Figure 13 opens.
  • Page 48 CTD-N Technical Manual NOTE. Clicking No in the Erase Memory window will append the new data file to the last data file stored in memory. No memory will be erased. 12. To erase all of memory, click Erase. A CTDPro window opens asking if you want to erase all of memory: 13.

  • Page 49: Configuring And Deploying The Ctd-N In Delayed Start Continuous Mode

    CTD-N Technical Manual 15. Click OK. The Interval window and the CTD-N Configuration dialog box close. Data will continue to be acquired and stored until data logging is stopped, the memory is full or the battery pack is depleted. 16. Disconnect the test cable from the instrument and install the dummy plug. CAUTION.
  • Page 50 CTD-N Technical Manual 5. Click Yes to stop data logging, or click No to continue. If you click No, the window closes and data acquisition continues without interruption. If you click yes, data logging stops, the window closes and the CTD-N Configuration dialog box shown in Figure 13 opens.
  • Page 51 CTD-N Technical Manual NOTE. Clicking No in the Erase Memory window will append the new data file to the last data file stored in memory. No memory will be erased. 13. To erase all of memory, click Erase. A CTD-N window opens asking if you want to erase all of memory: 14.

  • Page 52: Configuring And Deploying The Ctd-N In Delayed Start Interval Mode

    CTD-N Technical Manual 16. Click OK. The Delayed Start Continuous window and the CTD-N Configuration dialog box close. Data will continue to be acquired and stored until data logging is stopped, the memory is full, or the battery pack is depleted. 17.
  • Page 53 CTD-N Technical Manual If you click No, the window closes and data acquisition continues without interruption. If you click yes, data logging stops, the window closes and the CTD-N Configuration dialog box shown in Figure 13 opens. 6. If the local time and date require setting, click Set Time Date in the CTD-N-CTD Configura- tion dialog box.
  • Page 54 CTD-N Technical Manual 12. In the Average Time area, use the up and down arrows in the Length scroll box to enter the Average Time in minutes and seconds (mm:ss). 13. Click Deploy. The Erase Memory window opens: NOTE. Clicking No in the Erase Memory window will append the new data file to the last data file stored in memory.

  • Page 55: Using Battery End Cap Enabled Interval Mode

    CTD-N Technical Manual 16. Enter the data file name (10 characters maximum) in the Enter the filename to store the CTD data text box, and then click OK. The Delayed Start Interval window opens indicating that the CTD is running in Delayed Start Interval mode: 17.

  • Page 56: Ctd-N Autolog Feature

    CTD-N Technical Manual CTD-N Autolog Feature The CTD-N Autolog feature instructs the instrument to create a new file and start logging upon sub- mersion in salt water. This is extremely advantageous to users as it permits logging to a new file without having to reconnect a computer to the instrument to manually instruct the instrument to start logging.

  • Page 57: Selecting And Activating The Autolog Feature

    CTD-N Technical Manual Figure 23. Flowchart for the CTD-N Autolog Feature NOTE. This chart assumes the instrument is in the ‘Run’ operating mode. CAUTION. The file will be lost if power is removed before the file is closed! To ensure that the data file has been saved and closed properly, wait more than thirty seconds after removing the CTD-N from the water before disconnecting power to the CTD-N.

  • Page 58: Autolog Typical Applications And Procedures

    The user can save valuable battery energy by using the Autolog feature in conjunction with TRDI’s battery end cap switch option for the CTD-N series. This switch breaks and makes the connection from the battery to instrument electronics. Thus, the user can set up the instrument to Autolog and then break the battery connection to the instrument to save energy.
  • Page 59 CTD-N Technical Manual 3. Open CTDPro. 4. Select the Autolog feature from the Advanced Settings dialog box. 5. Close the dialog box. 6. Choose the ‘Sample Rate’ and the ‘Average Time’ in the Settings dialog box. 7. Close the dialog box. 8.
  • Page 60 CTD-N Technical Manual 24. Download CTD data file by following the path CTD>Memory>View Files. 25. View the data graphically in CTDPro or export to a txt for use with other analysis software. Using the Autolog Feature with Battery Power, But Without the Battery End Cap Switch The steps for using the Autolog feature on a battery powered instrument without the end cap switch as opposed to one with the end cap switch are a little different.

  • Page 61: Retrieving And Displaying Data From The Ctd-N

    CTD-N Technical Manual Retrieving and Displaying Data from the CTD-N Data that are stored in the CTD-N can be downloaded file by file to your computer. Once down- loaded, the data can be exported to a text or spreadsheet file for viewing and printing, or to CTDPost for post processing.

  • Page 62: Figure 25. The Download Dialog Box

    CTD-N Technical Manual If you click yes, data logging stops, the CTD-N window closes and the Download dialog box shown in Figure 25 opens. Figure 25. The Download Dialog Box 5. Click the file you want to download, and then click Download. The Save As dialog box for CTD data files shown in Figure 26 opens.

  • Page 63: Exporting And Viewing Saved Data

    CTD-N Technical Manual 7. In the File name text box enter the name of the file in which to save the data. The extension .ctd is added automatically. NOTE. Windows 7® will not save any data files to the folder selected in the dialog box. Instead it saves to the desktop by default.

  • Page 64: Exporting Saved Data

    CTD-N Technical Manual Exporting Saved Data To export saved data as a text file, spreadsheet file or CTDPost file: 1. Choose Start ➤ All Programs ➤ RD Instruments ➤ CTDPro. CTDPro starts and the CTDPro Main window opens. 2. Choose File ➤ Export. The Export dialog box shown in Figure 27 opens: Figure 27.

  • Page 65: Viewing Data That Have Been Exported To A Text File

    CTD-N Technical Manual Figure 28. The Open Dialog Box for CTD Data Files 6. Click the CTD data file you want to export, and then click Open. The Open dialog box for CTD data files closes and the file name is displayed in the Filename text box.

  • Page 66: Displaying, Printing, And Saving Graphs

    CTD-N Technical Manual Figure 29. Example CTD-N Data File Printout Displaying, Printing, and Saving Graphs After the data have been downloaded from the CTD-N and saved to a CTD data file, the data in the CTD file can viewed on graphs in a graphics display, and the graphs can be printed and saved. CTDPro provides graphs of the parameters that are measured and calculated by the CTD-N and the parameters that are calculated by CTDPro.

  • Page 67: Displaying Data Versus Pressure Or Time

    CTD-N Technical Manual • Pressure • Salinity • Sound Speed • Battery Voltage The parameters calculated by CTDPro are the following: • Conductivity and Temperature versus Pressure • Salinity • Sound Velocity • Density • TS Plot Displaying Data versus Pressure or Time You can display data either versus pressure or versus time on the horizontal axis of a graph.

  • Page 68: Zooming In And Out Of A Graph

    CTD-N Technical Manual Figure 30. The Graphics Display Opened to the Conductivity Graph 4. To display a list of available CTD Channels data parameters, click the plus sign (+) to the left of CTD Channels. To display a list of available Processed data parameters, click the plus sign (+) next to Pro- cessed.

  • Page 69: Figure 31. The 2D Chart Control Properties Dialog Box

    CTD-N Technical Manual Properties dialog box. For complete instructions on how to set up the graph, click Help in the dialog box. Figure 31. The 2D Chart Control Properties Dialog Box Figure 32. The Temperature Graph P/N 95F-6000-00 (February 2017) page 61 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 70: Saving A Graph

    CTD-N Technical Manual Figure 33. The Pressure Graph Saving a Graph Graphs can be saved as JPG files, files of extension .jpg, and opened in any photo editor. To save a graph: 1. View the graph as described in Viewing Data on a Graph.

  • Page 71: Previewing And Printing A Graph

    CTD-N Technical Manual The Save As dialog box for image files shown in Figure 35 opens. This dialog box is used to create the file in which to save the image file. Figure 35. The Save As Dialog Box for Image Files 4.

  • Page 72: Erasing All The Data Files

    CTD-N Technical Manual File Information window displays information particular to the opened file, including serial num- ber, the calibrations date, the sample rate, the running mode, the run times, and the total number of recorded scans. To close the File Information window, click OK. Figure 36.
  • Page 73 CTD-N Technical Manual 5. Click Yes to erase all of memory. A CTDPro window opens asking if you want to erase all of memory: 6. Click Yes to confirm that you want to erase all of memory. The memory is erased as indicated by the Erase Status progress bar in the Erase Memory window, and then the Erase Memory window closes.

  • Page 74: Acquiring, Displaying, And Saving Data In Real Time

    CTD-N Technical Manual Acquiring, Displaying, and Saving Data in Real Time Data acquired by the CTD-N can be displayed and saved in real time by running the instrument di- rectly from the test cable, or the test cable can be replaced with a sea cable for running up and down casts or remotely deploying the instrument.

  • Page 75: Figure 37. The Channel Configuration Dialog Box

    CTD-N Technical Manual Figure 37. The Channel Configuration Dialog Box NOTE. You can open as many CTD-N Acquisition windows as there are connected instruments. The instruments must connect to separate serial ports. P/N 95F-6000-00 (February 2017) page 67 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 76: Figure 38. The Ctd-N Acquisition Window

    CTD-N Technical Manual Figure 38. The CTD-N Acquisition Window NOTE. To view more of the Text Window in the CTD-N Acquisition window, click and drag the vertical window divider to the right or drag the scroll box in the horizontal scroll bar to the right.

  • Page 77: Stopping Data Acquisition

    CTD-N Technical Manual 7. In the CTD Input area, select the serial port to which the CTD-N is connected from the Communication Port drop-down list box. 8. Select the baud rate from the Baudrate drop-down list box. 9. Click OK to save the selections and close the Acquisition Setup dialog box. 10.

  • Page 78: Ctd-N Acquisition Window Displays

    CTD-N Technical Manual CTD-N Acquisition Window Displays The CTD-N Acquisition window provides digital displays of the conductivity, temperature, pressure, salinity, and sound velocity data in the CTD Channels area of the window. The four analog chan- nels, Analog 1 to Analog 4, and the RS-232 channel, Serial, are also displayed if optional external sensors are installed.

  • Page 79: Ctd-N Maintenance

    CTD-N Technical Manual CTD-N Maintenance To ensure your CTD-N continues to provide you with accurate data, you should inspect and clean the instrument after each use. This section provides some inspection and cleaning recommenda- tions and instructions on how to replace the battery pack. Recommended Maintenance Table 2.

  • Page 80: Cleaning And Inspecting The Ctd-N

    CTD-N Technical Manual *The measurement error band of the CTD will widen over time due to component aging. This effect happens regardless of whether or not the instrument is being operated. Due to the stringent accuracy specifications, the effects of drift rapidly become a significant por- tion of the overall instrument error budget.

  • Page 81: Figure 42. Cleaning The Ctd-Nh Sensor Head

    CTD-N Technical Manual Do NOT use high pressure or you may damage softer surfaces. Always dry the system before placing it in the storage case to avoid fungus or mold growth. After cleaning the instrument, check it carefully for signs of damage. Check the bulkhead connector for looseness or other signs of damage.

  • Page 82: Replacing The Battery Pack

    CTD-N Technical Manual Replacing the Battery Pack Replacing the battery pack requires removal and reinstallation of the end cap on the in- strument housing. To replace the battery pack: 1. Using a 3/8-inch hex nut driver, loosen the self-locking nut on the band clamp that secures the end cap as shown.
  • Page 83 CTD-N Technical Manual 3. Carefully remove the end cap by grasping the housing in one hand and the end cap connector in the other as shown and pulling straight out. It may be necessary to twist the end cap slightly while pulling. If neces- sary, a flat plastic, nonmetallic tool can be used to pry the end cap from the housing.
  • Page 84 CTD-N Technical Manual 5. Remove the battery pack and another foam pad as shown. 6. Disconnect the battery pack in-line con- nector, and then connect a fresh battery pack. Removing the Battery If the Option 1 and Option 2 connectors are installed, refer instead to this photo.
  • Page 85 CTD-N Technical Manual If the Option 1 and Option 2 connectors are installed, refer instead to this photo. Inserting a Battery, with Options Connectors 8. Push the battery pack into the housing as far as it will go, and then insert the second foam pad over the battery pack and con- nect the in-line connectors JP3 and JP4 as shown.

  • Page 86: Oil Fill Procedure And Capillary Tube Installation

    CTD-N Technical Manual NOTE. There are two O-rings installed in the O-ring groove on the end cap: a backing O-ring, which has a flat side and a round side, and a standard round O-ring. As shown below, the backing O-ring is installed with the flat side facing toward the inside of the housing and the round side facing toward the outside of the housing.
  • Page 87 CTD-N Technical Manual The following parts should be included in your kit: Part Number Quantity Description 1400-65361 Nalgene Bottle 5400-7510A653 Syringe 5400-TS19X1 Needle NY-200-1-2ST Capillary Body Assembly A150-045 Capillary Tube 1605-378372 1 ounce Oil, Dow Corning 200 CTS 97F-6003-00 Needle Cover AN2005001 Oil Fill Procedure Should you require additional parts from this kit please contact a Teledyne RD Instruments sales...
  • Page 88 CTD-N Technical Manual Step #3: Thread the capillary assembly into the pres- sure port slowly. You should see the oil wick up into the capillary tube as you thread the assembly into the end cap. Have an absorbent paper towel on hand to clean up any overflow that you may have.

  • Page 89: Installing A Ctd-N End Cap Switch Kit

    CTD-N Technical Manual Installing a CTD-N End Cap Switch Kit This section illustrates how to replace the original CTD-N end cap with a new end cap that contains a shorting plug. The shorting plug allows the battery power to be connected and disconnected with- out having to open the CTD-N.

  • Page 90: Firmware Updates

    Firmware Updates This section shows how to update the firmware for your CTD-N series instruments. NOTE. If you currently have a firmware version earlier than version 3.0, please contact TRDI for assistance.
  • Page 91 CTD-N Technical Manual 2. Set the baud rate of the CTD-N to 9600 baud by using CTDPro. 3. Download the CTD-N firmware to your desktop: Use our online customer portal at http://www.teledynemarine.com/rdi and click on the Support link. Log into your account and then click the Software/Firmware link.

  • Page 92: Figure 44. Ctd-N Firmware Updates

    Figure 44. CTD-N Firmware Updates 6. Set the Select Product box to Citadel CTD-N and select the COM Port that your CTD-N is connected to. 7. Click the Program button and wait until the Programming Status meter is full (this takes approximately 5 minutes).

  • Page 93: Appendix A: Measured And Calculated Parameters

    CTD-N Technical Manual APPENDIX A: Measured and Calculated Parameters Conductivity, temperature, and pressure are measured directly by the CTD-N. In addition, the in- strument calculates salinity and sound velocity. All these parameters are recorded to internal memory along with the time and date and the battery voltage for each sample, and they are re- trieved when downloading the data from the instrument and saving the data to a file.

  • Page 94: Parameters Calculated By Ctdpro

    CTD-N Technical Manual Parameters Calculated by CTDPro The parameters calculated by CTDPro are the following: Depth: The water depth in meters. Density: The water density in kg/m Salinity: The seawater salinity in accordance to PSS78 (Practical Salinity Scale 1978). Sound Velocity: T The sound velocity in water in m/sec.

  • Page 95: Appendix B: Bulkhead Connector Wiring

    CTD-N Technical Manual APPENDIX B: Bulkhead Connector Wiring The CTD-N includes a SubConn® bulkhead connector on the lower end cap for connecting to a computer and to power. This connector and its associated components are listed in Table 4. Table 4: Bulkhead Connector Components ITEM SubConn PART NUMBER...

  • Page 96: Figure 46. 6-Pin Bulkhead Connector Face View

    CTD-N Technical Manual Table 6: CTD-N Bulkhead 4-pin Connector to Computer Connections LABEL FUNCTION Ground RXD/RS-485A Received Data from Computer TXD/RS-485B Transmitted Data to Computer Table 7: CTD-N Bulkhead 4-pin Connector to Power Supply Connections LABEL FUNCTION Ground Power(+) Instrument Power NOTE.

  • Page 97: Figure 47. Test Cable Wiring

    CTD-N Technical Manual NOTE. The original 4-pin bulkhead connector is replaced with a 6-pin bulkhead connector when the CTD-N includes the External Sensor Interface, battery, or the End Cap Switch Kit. The optional End Cap Switch Kit gives the user the ability to easily connect and disconnect the internal battery. Table 10: Test Cable Pin Out CONNECTOR...

  • Page 98: Figure 48. Battery Adapter Cable Wiring P/N B176-207

    CTD-N Technical Manual Figure 48. Battery Adapter Cable Wiring P/N B176-207 page 90 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 99: Appendix C: Optional Sensors

    APPENDIX C: Optional Sensors The Citadel CTD has two types of sensors: Internal Sensors and External Sensors. The Internal Sen- sors are built into the system, and the External Sensors are optional ADC sensors attached to the optional ADC End Cap.

  • Page 100: Figure 49. Option 1 & Option 2 Connectors With 6-Pin Connector On Lower End Cap

    CTD-N Technical Manual Option 1 Connector (Female Locking Collar 6-pin Bulkhead Connector Option 2 Connector (Male Locking Collar) Locking Clamp Figure 49. Option 1 & Option 2 Connectors with 6-pin Connector on Lower End Cap Table 11: Option Connectors Components ITEM SUBCONN PART NUMBER TRDI PART NUMBER...

  • Page 101: Figure 50. Option 1 And Option 2 Connectors Face View

    CTD-N Technical Manual Figure 50. Option 1 and Option 2 Connectors Face View Table 12: Option 1 Connector Connections Channel LABEL FUNCTION Power Ground Signal (+) Sensor Signal Power (+) Sensor Power DC Channel 1 Signal (-) Sensor Signal Ground Gain0_0 Gain Control A Gain0_1...
  • Page 102 CTD-N Technical Manual Signal (+) Sensor Signal Power (+) Sensor Power Signal (-) Sensor Signal Ground Power Ground Received Data RS-232 Channel 5 Power (+) Sensor Power Transmitted Data page 94 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 103: Seapoint Turbidity Sensor

    CTD-N Technical Manual Seapoint Turbidity Sensor The turbidity sensor is a Seapoint Turbidity Meter manufactured by Seapoint Sensors, Inc. The sen- sor detects the light scattered by suspended particles in water and outputs a voltage proportional to the amount of suspended solids. The turbidity sensor is shown connected to the Options 1 con- nector on a CTD-N in Figure 51.

  • Page 104: Figure 51. Ctd-N With Seapoint Turbidity Sensor Connected To The Option 1 Connector

    CTD-N Technical Manual Option 1 Subcon Connector Connector Turbidity Sensor Cable Turbidity Sensor Figure 51. CTD-N with Seapoint Turbidity Sensor Connected to the Option 1 Connector page 96 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

  • Page 105: Calibrating The Seapoint Turbidity Sensor

    CTD-N Technical Manual 3. Choose Sensors ➤ Setup. CAUTION. The setup dialog applies only to sensors manufactured by Seapoint. If you have other sensors, do not use the setup dialog because it will set the channels to expect the Seapoint sensors. The Sensor Setup dialog box shown in Figure 52 opens.

  • Page 106: Seapoint Fluorometer Sensor

    CTD-N Technical Manual Seapoint Fluorometer Sensor The fluorometer sensor is a Seapoint Chlorophyll Fluorometer manufactured by Seapoint Sensors, Inc. The sensor measures chlorophyll a over a wide dynamic range in a wide variety of conditions. The fluorometer sensor connects to the Options 1 connector on a CTD-N. The fluorometer sensor has four range selections which allow you to choose the best resolution for the application.

  • Page 107: Calibrating The Seapoint Fluorometer Sensor

    CTD-N Technical Manual Figure 53. The Sensor Setup Dialog Box—Selecting Seapoint Fluorometer Sensor Range 4. In the Fluorometer Gain area of the Sensor Setup dialog box, select the desired option in accordance with Table 15. 5. Click OK to close the Sensor Setup dialog box and save the range setting. Calibrating the Seapoint Fluorometer Sensor Before calibrating the fluorometer sensor, select the desired range as described in Selecting the...

  • Page 108: Calibrating The External Sensors

    CTD-N Technical Manual Calibrating the External Sensors CTDPro allows you to calibrate optionally installed external sensors. You must provide the means to set up the sensor to expose it to stimuli at its low and high range of operation and, if required, points in between.

  • Page 109: Figure 55. The Calibrate Sensor Dialog Box-Setting The Low

    CTD-N Technical Manual 5. Set up a low point standard for the sensor. For example, if calibrating a turbidity sensor, cover the turbidity sensor’s optical window with black electrical tape to block out all light entering the sensor. 6. Enter 0 in the Standard text box. NOTE.

  • Page 110: Figure 56. The Calibrate Sensor Dialog Box-Setting Additional Standard Points Including The High Point

    CTD-N Technical Manual The second standard is added to the table. 11. If required, repeat the setup and standard entries for as many additional standards as de- sired in between the high and low standards. The standards are added to the table and the graph as shown in Figure 56. Figure 56.

  • Page 111: Appendix D: Ctd-N Commands

    CTD-N Technical Manual APPENDIX D: CTD-N Commands The Citadel CTD System can be connected to a PC using an RS-232 or RS-485 Cable (see Installing CTDPro and Selecting the CTD-N Connecting the CTD-N to Your Computer.). Commands are sent to the system through a terminal window (such as TRDI’s BBTalk or CTDPro’s terminal win- dow).

  • Page 112: Entering Commands

    CTD-N Technical Manual Entering Commands To enter a CTD-N command: 1. Choose Start ➤ All Programs ➤ RD Instruments ➤ CTDPro. CTDPro starts and the CTDPro Main window opens. 2. Choose View ➤ Terminal. The Terminal window shown in Figure 58 opens. Figure 58.
  • Page 113 CTD-N Technical Manual In this example, by typing CH0 followed by the enter key, the system lets the user know that the Time channel is turned off. In order to change the value of a setting, enter the command name fol- lowed by an equal sign and then the value.
  • Page 114 CTD-N Technical Manual Table 16: CTD-N Commands OPERATIING FUNCTION MODE COMMAND Sets the baud rate – • – Displays the current mode • • • MODE Sets the address operation • – – SAOP Clears the address operation – • –...
  • Page 115 CTD-N Technical Manual Table 16: CTD-N Commands OPERATIING FUNCTION MODE COMMAND Closes the current file – • – SFRM Displays or sets the Gain0_0 and Gain0_1 outputs – • – GAIN0 Displays or sets the Gain1_0 and Gain1_1 outputs • –...

  • Page 116: Start

    CTD-N Technical Manual START Starts data acquisition Usage START <filename> <CR> or <LF> Operating Modes Open Description The START command creates a file in the instrument and immediately begins acquiring and saving data to the file. Data are recorded at the sample rate set by the SRATE command. Returns <CR><LF>...
  • Page 117 CTD-N Technical Manual ***R Go to the Run operating mode Usage ***R <CR> or <LF> Operating Modes Open Description The ***R command sets the instrument into the Run operating mode. In Run mode the instrument acquires data in Continuous, Interval or Delayed Start mode. Data are recorded at the sample rate set by the SRATE command.
  • Page 118 CTD-N Technical Manual ***O Go to the Open operating mode Usage ***O <CR> or <LF> Operating Modes Run, Calibration Description The ***O command sets the instrument into the Open operating mode. In Open mode data are not acquired and operational settings and calibration constants can be displayed and edited. Returns <CR><LF>...
  • Page 119 CTD-N Technical Manual ***C Go to the Calibration operating mode Usage ***C <CR> or <LF> Operating Modes Open Description The ***C command sets the instrument into the Calibration operating mode. In Calibration mode reference data and raw data can be displayed. Returns <CR><LF>...
  • Page 120 CTD-N Technical Manual ***I Go to Interval mode Usage ***I <filename> <CR> or <LF> Operating Modes Open Description The ***I command creates a file in the instrument and sets the instrument into the Interval operat- ing mode of the Run mode if valid interval and on times have been entered. In Interval mode the instrument turns on and acquires and saves data to the file at the beginning of each interval time as set by the ITIME command for the on time as set by the OTIME command.
  • Page 121 CTD-N Technical Manual ***D Go to Delayed Start mode Usage ***D <filename> <CR> or <LF> Operating Modes Open Description The ***D command creates a file in the instrument and sets the instrument into the Delayed Start mode of the Run operating mode if a valid delayed start time and date have been entered. In De- layed Start mode the instrument turns on and acquires and saves data to the file in the Continuous or Interval mode of the Run operating mode beginning at the time specified by the DTIME com- mand and date specified by the DDATE command.
  • Page 122 CTD-N Technical Manual ***E Save the EE data base Usage ***E <CR> or <LF> Operating Modes Open Description The ***E command causes all calibration constants and operational settings to be written to flash memory. CAUTION. The ***E command overwrites the current calibration constants and operational settings in flash memory.

  • Page 123: Cdate

    CTD-N Technical Manual CDATE Displays and sets the calibration date Usage CDATE <CR> or <LF> CDATE=ddmmmyy <CR> or <LF> Operating Modes Open Description The CDATE command displays and allows you to set the calibration date of the instrument. When setting the calibration date, use the ddmmmyy date format: Day—01 to 31 mmm: Month—JAN, FEB, MAR, APR, MAY, JUN, JUL,...

  • Page 124: Srate

    CTD-N Technical Manual SRATE Displays and sets the instrument sampling rate Usage SRATE <CR> or <LF> SRATE=nn <CR> or <LF> Operating Modes Run, Open, Calibration Description The SRATE command displays and allows you to set the sampling rate of the instrument in Hz. The range of sampling rates is from 1 to 15 Hz.

  • Page 125: Dtime

    CTD-N Technical Manual DTIME Displays and sets the delayed start time Usage DTIME <CR> or <LF> Operating Modes Open Description The DTIME command displays and allows you to set the delayed start time of the instrument. NOTE. The time set by the DTIME command must be later than the current time and date by at least one minute.

  • Page 126: Ddate

    CTD-N Technical Manual DDATE Displays and sets the delayed start date Usage DDATE <CR> or <LF> Operating Modes Open Description The DDATE command displays and allows you to set the delayed start date of the instrument. When setting the delayed start date, use the mm-dd-yy format: Month—01 to 12 Day—01 to 31 Year—00 to 99...

  • Page 127: Itime

    CTD-N Technical Manual ITIME Displays and sets the interval time Usage ITIME <CR> or <LF> Operating Modes Open Description The ITIME command displays and allows you to set the interval time of the instrument. The inter- val time is the time in hours, minutes and seconds between the start of each on time. NOTE.

  • Page 128: Otime

    CTD-N Technical Manual OTIME Displays and sets the on time Usage OTIME <CR> or <LF> Operating Modes Open Description The OTIME command displays and allows you to set the on time of the instrument. The on time is the time in hours, minutes and seconds beginning at the start of each interval time during which the instrument is on and collecting data.

  • Page 129: Rcal

    CTD-N Technical Manual RCAL Displays the calibration constants Usage RCAL <CR> or <LF> Operating Modes Open Description The RCAL command displays all of the instrument calibration constants. NOTE. The ***E command must be entered to save any changed calibration constants. In addition, the instrument serial number and the version number of the firmware cannot be changed.

  • Page 130: Ccko, Rcko, Scko

    CTD-N Technical Manual CCKO, RCKO, SCKO Sets, clears, or reads checksum operation Usage CCKO RCKO SCKO Mode OPEN Description These commands set, clear, or read the Checksum data output mode. Checksum data output mode adds the checksum at the end of the line of data in RUN mode. The SCKO command sets the Checksum mode.

  • Page 131: Csot, Rsot, Ssot

    CTD-N Technical Manual CSOT, RSOT, SSOT Sets, clears, and reads scaled output mode Usage CSOT RSOT SSOT Operating Modes Open Description These commands set, clear, and read the Scaled units mode. The SSOT command enables the scaled output of the data over a range of 0 to 65535 counts. The CSOT command sets the data format to be reported in engineering units.

  • Page 132: Ccop, Rcop, Scop

    CTD-N Technical Manual CCOP, RCOP, SCOP Sets, clears, and reads continuous on power up Usage CCOP RCOP SCOP Operating Modes Open Description These commands set, clear, and read continuous data output after power up. The SCOP command enables continuous output of data immediately after power up. Data are output at the instrument sampling rate as set by the SRATE command and the baud rate as set by the SB command.
  • Page 133 CTD-N Technical Manual Sets the baud rate Usage SBnn <CR> or <LF> Operating Modes Open Description The SB command sets and displays the baud rate of the instrument. NOTE. The SB command must be followed by the ***E command to save the setting. WARNING.

  • Page 134: Mode

    CTD-N Technical Manual MODE Displays the current mode Usage MODE <CR> or <LF> Operating Modes Run, Open, Calibration Description The MODE command displays the current operating mode of the instrument. Returns If the instrument is in Open mode: Open Mode If the instrument is in Run mode: Run Mode If the instrument is in Calibration mode:...

  • Page 135: Caop, Raop, Saop, #N

    CTD-N Technical Manual CAOP, RAOP, SAOP, #N Set, clear, or read address operation Usage CAOP RAOP SAOP #Nxy Mode OPEN, RUN ADR/CAOP/RAOP/SAOP commands only work in OPEN mode. The #n/#N command can be entered in RUN or OPEN mode. Continuous Output Mode (SCOP) cannot be used while in address operation mode. Address Operation mode works ONLY with output format 0 (SFRM=0).
  • Page 136 CTD-N Technical Manual SAOP The SAOP command enables address operation. Once address operation is enabled, an instrument will respond to commands until a # character is sent. After this time, the instrument will ignore all commands until the instrument receives the string #Nxy (where xy is the instrument’s address as set by the ADR command).

  • Page 137: Time

    CTD-N Technical Manual TIME Displays and sets the RTC time Usage TIME <CR> or <LF> Operating Modes Open Description The TIME command displays and allows you to set the current time of the real time clock in the in- strument. When setting the current time, use the hh:mm:ss format: Hours—01 to 24 Minutes—00 to 59...

  • Page 138: Date

    CTD-N Technical Manual DATE Displays and sets the RTC date Usage DATE <CR> or <LF> Operating Modes Open Description The DATE command displays and allows you to set the current date of the real time clock in the in- strument. When setting the current date, use the mm-dd-yy format: Month—01 to 12 Day—01 to 31...

  • Page 139: Diag

    CTD-N Technical Manual DIAG Runs diagnostics Usage DIAG <CR> or <LF> Operating Modes Open Description The DIAG command runs the instrument diagnostics and displays the results. Returns See Examples below. Examples Enter diag <CR> or <LF> The instrument displays the diagnostics: Running diagnostics...

  • Page 140: Zmem

    CTD-N Technical Manual ZMEM Erases the entire flash memory Usage ZMEM <CR> or <LF> Operating Modes Open Description The ZMEM command erases all of the data stored in the flash memory of the instrument. The cali- bration constants are not erased. In addition, the memory pointers are reset after the data are erased.

  • Page 141: Fdmp

    CTD-N Technical Manual FDMP Dumps a file in ASCII Usage FDMP <filename> <CR> or <LF> Operating Modes Open Description The FDMP command dumps a file in ASCII. Returns See Examples below. Examples Enter FDMP <filename> <CR> or <LF>. The instrument dumps the file in ASCII: Read sequence, please wait...

  • Page 142: Avgi

    CTD-N Technical Manual AVGI Sets the averaging interval Usage AVGI <CR> or <LF> Operating Modes Open Description The AVGI command displays and allows you to set the averaging interval of the instrument. The averaging interval is the time during the Continuous or Interval mode of the Run Operating mode that data are averaged.

  • Page 143: Chkf

    CTD-N Technical Manual CHKF Checks the flash memory Usage CHKF <CR> or <LF> Operating Modes Open Description The CHKF command checks the flash memory. Returns See Examples below. Examples Enter CHKF <CF> or <LF>. The instrument checks the flash memory and displays the results: Marker Code = 236 (0xEC) Device Code = 218 (0xDA) Size Code = 21 (0x15) Flash Status = 224 (0xE0) Clearing block table...

  • Page 144: Ddmp

    CTD-N Technical Manual DDMP Outputs scans from memory in ASCII Usage DDMP <CR> or <LF> Operating Modes Open Description The DDMP command outputs and displays scans of recorded data in ASCII. The number of scans output and displayed is specified by the DLEN command. NOTE.

  • Page 145: Bdmp

    CTD-N Technical Manual BDMP Outputs scans from memory in binary Usage BDMP <CR> or <LF> Operating Modes Open Description The BDMP command outputs and displays scans of recorded data in binary. The number of scans output is specified by the DLEN command. The data are output in IEEE Standard 4-byte binary form.

  • Page 146: Dlen

    CTD-N Technical Manual DLEN Sets the number of scans to output Usage DLEN=nnnn <CR> or <LF> Operating Modes Open Description The DLEN command sets the number of scans of recorded data to output and display when using the DDMP or BDMP command. The nnnn format is 1 to 9999.

  • Page 147: Log

    CTD-N Technical Manual Sets the position of the logging pointer Usage LOG=nnnnn <CR> or <LF> Operating Modes Open Description The LOG command sets the value of the logging pointer. The value of the logging pointer is the lo- cation of the next byte in memory to be written to flash memory. The nnnn format is 1 to 99999.

  • Page 148: S/N

    CTD-N Technical Manual Displays the serial number Usage S/N <CR> or <LF> Operating Modes Open Description The S/N command displays the serial number of the instrument. Returns See Examples below. Examples Enter S/N <CR> or <LF> The instrument displays its serial number: S/N=1001 See Also page 140...

  • Page 149: Rop

    CTD-N Technical Manual Displays the current operational settings Usage ROP <CR> or <LF> Operating Modes Run, Open, Calibration. Description The ROP command displays all the current calibration constants and operational settings for the instrument. Returns See Examples below. Examples Enter ROP <CR> or <LF> The instrument displays all the current calibration constants and operational settings: S/N=1001 Open Mode Continuous cleared Address op cleared scaled output cleared check- sum output cleared CH0(TIME)=ON CH1(COND)=ON CH2(TEMP)=ON CH3(PRES)=ON CH4(SALT)=ON...

  • Page 150: Ver

    CTD-N Technical Manual Displays the firmware version number Usage VER <CR> or <LF> Operating Modes Open Description The VER command displays the version number of the firmware in the instrument. Returns See Examples below. Examples Enter VER <CR> or <LF> The instrument displays the version number of the firmware: Firmware Version 2.2 See Also page 142...

  • Page 151: Who

    CTD-N Technical Manual Displays the device name Usage WHO <CR> or <LF> Operating Modes Run, Open, Calibration Description The WHO command displays the device name. The device is the connected instrument. Returns See Examples below. Examples Enter WHO <CF> or <LF> The instrument displays the device name: CTD-N P/N 95F-6000-00 (February 2017) page 143...

  • Page 152: Adr

    CTD-N Technical Manual Displays or sets the instrument address Usage ADR <CR> or <LF> and ADR=xy <CR> or <LF> Operating Modes Open Description The ADR command displays or sets the address of the instrument. NOTE. The ADR command must be followed by the ***E command to save the setting. The xy format is 00 to 99.

  • Page 153: Rdm

    CTD-N Technical Manual Displays the channel names Usage RDM <CR> or <LF> Operating Modes Run, Open, Calibration Description The RDM command displays the on or off status of each of the six data channels. The six data chan- nels are the following: TIME: Time COND:...
  • Page 154 CTD-N Technical Manual Usage DIR <CR> or <LF> Operating Modes Run, Open, Calibration Description The DIR command displays the file directory on the instrument. Returns See Examples below. Examples Enter DIR <CR> <LF> The instrument displays the file directory: Number of files: 3 Name Start Time End Time Start End Size CTD DATA01 08/14/5 15:37 08/14/5 15:37 0 6235...
  • Page 155 CTD-N Technical Manual Displays the current mode Usage C <CR> or <LF> Operating Modes Run, Open, Calibration Description The C command displays the current operating mode of the instrument. Returns If the instrument is in Open mode: Open Mode If the instrument is in Run mode: Run Mode If the instrument is in Calibration mode: Cal Mode...
  • Page 156 CTD-N Technical Manual CH6 - Battery voltage NOTE. The CH command must be followed by the ***E command to save the setting. Returns See Examples below. Examples Input: Output: CH0=ON In this example, by typing CH0 followed by the enter key, the system lets the user know that the Time channel is turned on.
  • Page 157 CTD-N Technical Manual Displays the Help menu Usage ? <CR> or <LF> Operating Modes Open Description The ? command displays a Help menu, which lists many of the available commands. For detailed information on how to use these and other commands, refer to the information provided in this sec- tion.
  • Page 158 CTD-N Technical Manual Closes the current file Usage Operating Modes Run, Calibration Description The S command stops the output of data in the Continuous mode of the Run operating mode. No <CR> or <LF> character is required. NOTE. The S command must be entered as an upper case character. Returns None.
  • Page 159 CTD-N Technical Manual Sets continuous output Usage SC <CR> or <LF> Operating Modes Run, Calibration Description The SC command sets the instrument into the Continuous mode of the Run operating mode. The instrument outputs the data as soon as it is available. Returns Data are displayed one scan at a time.

  • Page 160: Sfrm

    CTD-N Technical Manual SFRM Select the output format Usage SFRM <CR> or <LF> SFRM=n <CR> or LF> Operating Modes Open Description The SFRM command allows you to select the output format of the data from a list of available for- mats, including standard TRDI format.
  • Page 161 CTD-N Technical Manual CC.CCC, TT.TTT, PP.PPPP, SS.SSSS, VVVV.VVVV SFRM=4 000255 22.14 0.18 12.3 00000 00000 00000 00000 0.0 hhmmss TT.TT CC.CC SS.SS 12.3 optData0 optData1 optData2 optData3 BioSpherical SFRM=5 000509 22.13 0.18 -0.00 12.3 00000 00000 00000 00000 0.0 hhmmss TT.TT CC.CC SS.SS N/A PP.PP 12.3 optData0 optData1 optData2 optData3 BioSpherical SFRM=6 000721 22.13...

  • Page 162: Gain0

    CTD-N Technical Manual GAIN0 Displays or sets the Gain0_0 and Gain0_1 outputs Usage GAIN0 <CR> or <LF> and GAIN0=n <CR> or <LF> Operating Modes Open Description The GAIN0 command displays or sets the Gain0_0 and Gain0_1 outputs. These are logic outputs on the Option 1 connector;...

  • Page 163: Gain1

    CTD-N Technical Manual GAIN1 Displays or sets the Gain1_0 and Gain1_1 outputs Usage GAIN1 <CR> or <LF> and GAIN1=n <CR> or <LF> Operating Modes Open Description The GAIN1 command displays or sets the Gain1_0 and Gain1_1 outputs. These are logic outputs on the Option 1 connector;...

  • Page 164: Appendix E: Warranty, Liability, And Rma Return Procedure

    CTD-N Technical Manual APPENDIX E: Warranty, Liability, and RMA Re- turn Procedure Teledyne RD Instruments Limited Warranty Teledyne RD Instruments (TRDI) guarantees its products to be free from defects in materials and workmanship for a period of one year from the date of shipment. In the event a product malfunc- tions during this period, TRDI’s obligation is limited to the repair or replacement, at TRDI’s option, of any product returned to the TRDI factory.

  • Page 165: Returning Ctds To Trdi For Service

    CTD-N Technical Manual Returning CTDs to TRDI for Service When shipping the system to TRDI from either inside or outside the United States, the following instructions will help ensure the CTD arrives with the minimum possible delay. Any deviation from these instructions increases the potential for delay.

  • Page 166: European Shipments

    CTD-N Technical Manual Step 2 – Provide a MSDS as necessary Please provide a Material Safety Data Sheet (MSDS) if the system/transducer is painted with anti- fouling paint. Step 3 - Ship via air freight, prepaid Urgent Shipments should be shipped direct to TRDI via overnight or priority air services. Do not send urgent airfreight as part of a consolidated shipment.
  • Page 167 CTD-N Technical Manual • When you need the instrument returned TRDI’s Customer Service will then respond with the RMA number for the shipment. Please include this number on all packages and correspondence. Step 2 – Provide a MSDS as necessary Please provide a Material Safety Data Sheet (MSDS) if the system/transducer is painted with anti- fouling paint.
  • Page 168 CTD-N Technical Manual NOTES page 160 EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.

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