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DVL Troubleshooting

Is my DVL faulty?

Below is a small list to check if your DVL is faulty or you are experiencing any issues. It starts with the basic before moving on to more advanced troubleshooting. When you come to the point of failure or the troubleshooting do not help, please submit a support ticket to our support team through our Support portal. Please write what is the issue and how you have tested the DVL. Please describe how the test environment is setup and how the DVL is mounted. Please add any Diagnostic reports and pictures of the test setup. This will help our support team greatly!

If the trouble shooting guide do not help, please check out FAQ DVL!

Check if DVL is powered

  1. Put the DVL under water and power it on with an adequate power supply.

LED

  1. Check the LED status, see LED Signals.

Wiring

  1. Check that you have wired your DVL correctly, see Wiring interface.
    • 1.1 If you have custom connector you need to ask the supplier for the correct drawings.
  2. Check for damages along the cable and that there are good connection where you have terminated your DVL.
  3. Check for short between Negative/Ground and Positive (10-30V).

Environmental Check

  1. The Line og sight should be clear of any obstacles including walls, see Line of sight.
    • 1.1 One easy way to make sure the Line of sight is clear from any walls is to observe that all beam shows approximately the same distance to the bottom. If some of the beams are flickering or showing another distance it might pick up a reflection from a wall or some other obstacle in the line of sight. Obstacle free radius from the DVL to the wall depending on the distance to the bottom can be calculated with this formula: Obstacle free radius = tan(32.5°) × distance from DVL to bottom.
  2. If testing in a pool, tank or bucket it should not be made out of a polished metal or very clean surfaces. This can introduce more noise and make it harder for the DVL to get a bottom lock.
  3. Check that there are no motors, echo sunders, pumps, running house. This can create noise in the same frequency as the DVL and have an impact on the acoustic signal.
  4. Make sure the environment is not acting on the DVL in a way that makes it pitch and yaw (waves). That will send the acoustic signal in many directions making it hard to achieve a bottom lock.

GUI

  1. Connect your DVL yo Ethernet by following the Network documentation, see Setup Network. Use the Fallback IP if you are struggling.

  2. You are able to access and see the Dashboard like displayed in our Web Demo.

  3. Check that you hav have latest software, see Software Updates

Collecting data

Assuming you have checked the above and your testing environment will not affect the performance of the DVL you can now start collecting data!

  1. Go into the Diagnostic report and collect data. Fill the description with relevant information of the test environment and observed issue.
  2. Take picture of the test environment and how DVL is mounted to bracket or ROV.
  3. If there are know issues under certain conditions/setup please perform these tests as well and collect diagnostic reports.
  4. Open a ticker through our support portal Support portal where you upload the diagnostic reports, pictures with a description of your issue.