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Loggerhead DSG-ST Manual

Ocean acoustic recorder

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DSG-ST Ocean Acoustic Recorder
www.loggerhead.com
Updated 30 March 2017
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Summary of Contents for Loggerhead DSG-ST

  • Page 1 DSG-ST Ocean Acoustic Recorder www.loggerhead.com Updated 30 March 2017...
  • Page 2 IMPORTANT: Install software drivers BEFORE connecting to USB. 1. Download and install Soundtrap Host software from www.loggerhead.com DSG-ST page. 2. Launch Sound Trap Host Software 3. Remove recorder from housing and ensure that it is powered by 3 D-cell batteries in at least one bay...
  • Page 3 5) The drivers will take a few minutes to install. Once complete the recorder will appear in the left hand window under “Device List.” NOTE: Occasionally it will require several moments for the computer to recognize the board. It also may take a more than one insertion of the USB plug before it recognizes the board.
  • Page 4 From this section you select how the recorder will start: either when disconnected from the USB or via the remote control. There is no salt water or depth detection for the DSG-ST Ocean. Recording Schedule Record Continuously: Will record continuously when box checked. If not checked, the record interval settings will be used.
  • Page 5 High: 33 dB gain (~168 dB re 1uPa clip level) High setting is recommended setting unless you will be in a loud environment. The hydrophone shipped with the DSG-ST has a typical sensitivity of -201 dBV/uPa. Deploy When done with settings click the ‘Deploy” button at the bottom of the screen.
  • Page 6 Each battery bay will provide power for about 20 days of continuous recording time. There is an Excel deployment time calculator that can be downloaded from the loggerhead.com DSG-ST page to estimate deployment duration based on duty cycled recordings. Tape batteries in place.
  • Page 7 1) Remove DSG from Housing. 2) Aim the remote at the recorder boards and press the “Stop” button. 3) Connect the DSG-ST board to the PC with the microUSB cable. 4) Once selected, the recorder will open to the “Retrieve” tab and download the recording directory.
  • Page 8 5) When files are downloaded, the card can be wiped by clicking “Delete All.” The entire card is deleted, so this operation may take a few minutes for a large card.
  • Page 9 Calibration There are two aspects to calibration: the hydrophone and the DSG-ST gain. The system gain is calculated as Recorder Gain + Hydrophone Sensitivity. Typical hydrophone sensitivities are -201 dBV/uPa. The hydrophone is supplied by HTI and a calibration sheet for each hydrophone is included with the recorder.
  • Page 10 Troubleshooting USB If the DSG is not being recognized by the sound trap software try the following: 1) Press STOP on the remote control while the recorder is connected. 2) Restarting your computer to reset the USB port. 3) Contact Loggerhead...
  • Page 11 The housing lid should be hand-tightened. DO NOT USE THE STRAP WRENCH TO CLOSE THE LID! Vent Plug Some versions of the DSG-ST have a vent plug. This plug is only to be used if there is a leak in the housing.
  • Page 12: Documentation Revision History

    Documentation Revision History 26 October 2016 v2.1. Added section on vent plug 7 March 2017 v2.2 Corrected calibration signal voltage from 30 uV rms to 300 uV rms 30 March 2017 v2.3 Added information on hand-tightening housing...