Function Testing

The following list describes how to function test the Subsonus Tag in a large tub.

  1. Fill a large tub or test tank with water. Ensure the tub is large enough and the water is deep enough to submerge both devices.

    A minimum size of 1 m x 1 m x 0.4 m deep is recommended.

  2. Place the Subsonus Tag on an approved Qi® Charger to exit Shipping Mode (see Shipping Mode) and enter Performance Mode. See Qi® Charging for more information.

  3. Check the Subsonus Tag's device address on the paper display, and ensure the unit is ready to deploy (see Electronic Paper Display).

    If the Device Address is 0, the unit will automatically be assigned an address by the first Subsonus that discovers it acoustically. See Subsonus Tag Device Addresses for more information.

  4. Remove the cable pigtail from the connector on the Subsonus unit and the supplied cable. Install the cable to the unit, ensuring that the connectors are mated correctly and the jackets are screwed on hand tight.

    Note: The connectors used on Subsonus require silicone grease to ensure they seal correctly. Keep the sealing faces free of debris or damage and ensure the female connector is completely sealed with grease before every mating. Recommended silicone grease: Dow MOLYKOTE™ 111

  5. Connect the Subsonus cable to PoE injector and the PoE injector into a local network (with DHCP) - see Connection Diagrams for more information. Power everything on.

    Note: When the PoE injectors are being supplied power, the DC Run LED will indicate green and when the PoE OUT is connected and power is being drawn from the PoE RUN LED indicator will also change to green. When Subsonus is on, it will beep.

  6. Place both devices into the tub of water, ensuring they are submerged. Failure to submerge Subsonus units while powered on for extended periods may cause an increase in temperature, causing damage.

    Face the units toward each other so that the hydrophones are facing one another, as far apart in the test tank as possible.

  7. Open your web browser and type in the address http://surface.local/ to connect to the surface Subsonus unit. The trailing forward slash is required on some web browsers.

    If you cannot connect to the Subsonus at this address, see Interfacing with Subsonus Tag

  8. Navigate to "Configuration"→"Acoustics" and ensure the Operation Mode for the surface unit is set to "Master". Confirm that the Device Address is set to 1.

  9. Once the surface unit (master) is set to track the slave, you should hear the devices communicating. Note that location data will be inaccurate due to the lack of GNSS position data (see Surface Unit Reference Source for more information)

  10. Monitor the acoustic data being transmitted in the Device List (see Device List). If there are many missed replies, confirm that the units are close together, and the blue hydrophones facing one another.