Desert Star Acoustic Release Control System, Руководство пользователя

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Control” software, and ready to be deployed underwater once you reach the deployment
site.
If you are planning to deploy your ARC unit(s) for more than one month under the water, the release mechanism of ARC unit
can be spray-painted with an anti-fouling paint to prevent bio-fouling build-up.
9. Noise Test at the Deployment Site
Once you reach your targeted deployment site, it is critical to conduct a “Noise Test”.
The purpose of the conducting a noise test is to adjust the sensitivity of the STM surface station in
relation to a specific noise profile of the vessel you will be using to deploy your ARC unit(s). Please
note that “Noise Test” is conducted for a specific vessel. In the event your vessel previously profiled
for the noise levels undergoes modifications impacting the amount of noise it may produce, it is
recommended to conduct a “Noise Test” again.
Your vessel itself, electrical equipment, and the mechanical machinery operated onboard your
vessel are expected to be the most likely source of sound pollution in the open waters. Conducting
the noise test will help you to adjust the sensitivity of the STM surface station to optimize the quality
of communication link.
Common sources of noise include natural biological noises (snapping shrimp, etc…) as well as
running engines of vessels operating at your deployment site. The noise test will show if the noise
level is high enough to interfere with communications between ARC unit and STM surface station.
Excessively high noise levels may prevent the ARC unit from entering the “sleep” mode, causing the battery of ARC
underwater unit to drain prematurely.
It is very unlikely, but if the noise levels prove to be high enough to render communication
impossible, a different deployment site should be considered.
To reduce the noise level, survey your deployment site for a possible source of noise. Turn off the engines of the vessel as
well as any on-board diesel power generators. Turn off high-energy lights, strobe-lights, and radar navigation systems. Depth
sounders, “fish finders,” and similar devices have been identified as a common source of interference. Please make sure to
turn off all electrical hardware for the duration of STM surface station communication with the ARC unit(s). If your STM