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DSG-ST Ocean Acoustic Recorder

www.loggerhead.com
Updated 30 March 2017

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Summary of Contents for DSG-ST

Page 1: ...1 DSG ST Ocean Acoustic Recorder www loggerhead com Updated 30 March 2017 ...

Page 2: ...ownload 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 4 Use provided micro USB cable to connect the recorder to your computer ...

Page 3: ...sionally 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 If this continues to be an issue follow the steps included at the end for reset ting the USB hub in Windows 7 6 Select the device by clicking on its label under Device List ...

Page 4: ... DSG ST Ocean Recording Schedule Record Continuously Will record continuously when box checked If not checked the record interval settings will be used Audio Options Sampling Mode Only Wave mode is enabled Sample Rate kHz Select one of the sample rates You can record sound frequencies up to half of the sample rate X3 Check to enable lossless data compression This is a good idea for deployments tha...

Page 5: ...a 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 Remove microUSB cable ...

Page 6: ...n duty cycled recordings Tape batteries in place 2 Aim the remote at the recorder boards and press the Start button A faint red and green light will flash settling to an intermittently blinking green light There is an indicator red LED in the hydrophone that will illuminate during recording The red hydrophone LED will go out when the recorder is sleeping Note One remote can trigger multiple instru...

Page 7: ... to the PC with the microUSB cable 4 Once selected the recorder will open to the Retrieve tab and download the recording directory Select the recording s that you wish to download and click Download Clicking Open Save Folder button will show where the individual recording folders are saved on your computer These will include metadata files and a wav file that can be used in the audio processing so...

Page 8: ...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: ...is supplied by HTI and a calibration sheet for each hydrophone is included with the recorder The recorder has two gain settings Low 21 dB gain 180 dB re 1uPa clip level High 33 dB gain 168 dB re 1uPa clip level Internal Calibration Signal Each recording starts by playing internal electrical calibration tones These signals are 300 uV RMS in amplitude and can be used to monitor the electrical calibr...

Page 10: ...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: ... If there is a leak it is critical to relieve the pressure before removing the lid otherwise the lid could fly off The vent plug can be used to relieve the pressure by turning it slowly until you start hearing air come out Once air starts coming out stop unscrewing and wait until air stops coming out The vent plug is designed to stay in the endcap and safely vent air through holes machined in the ...

Page 12: ...on 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 ...

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