DPA Hydrophone 8011 Podręcznik użytkownika - Strona 6

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User's Manual

Using the Hydrophone

To ensure optimal results, certain steps must be taken to prepare the

Hydrophone for use, bearing in mind any possible adverse effects of the

environment or medium in which it will be immersed. Please read the

important tips and precautions below.

Important: The 3-pin XLR connector is not waterproof. Do not immerge the

XLR connector in water and keep it dry at all times.

Important: The water medium often has a different electrical potential than

the ground potential of the electrical equipment. This phenomenon might

cause unwanted noises and hum in the Hydrophone. In order to prevent

these noises from occurring on the recording, the water medium must be

properly connected to the chassis ground of the electrical equipment in use.

A cobber wire immersed in the water and connected to the chassis ground

will solve the problem.

Important: Many small air bubbles covering the element can affect the

sensitivity of the sensing element. The element must be in full contact with

the medium in order to meet the specifications. A wetting agent such as liquid

soap can be applied to ensure that bubbles do not adhere to the surface of the

Hydrophone. Clean the Hydrophone carefully before and after use.

Important: The Hydrophone is supplied with a 10 meter (30ft) long special

quality cable as standard. It is not possible to extend existing cables.

Hydrophones with longer cables can be ordered on special request.