Reson Seabat 8101

Installation2.4.5.4 ROV/UUV InstallationMany of the comments about shipboard installation are applicable to anROV/UUV installation. There should be no tight bends or strain on the connectorsection when fully mated (see paragraph 2.4.5.2). If applicable, do not put thelast cable clamp in place until the connector is attached and secure. Place smallplastic bags, or other protective wrapping, over the exposed cable ends duringthe process of putting the cable in place.The cable connection at the sonar head is a 9-pin waterproof pressure immuneconnector. Before connecting, ensure that both male and female connector sectionsare clean and dry. Use alcohol or fresh water and a lint-free cotton swab toremove any dust or residue. A very light film of 3M Silicone Spray (or equivalent)on the mating surfaces will allow a smooth connection. When the connector set isfully mated, RESON recommends the use of tie-wraps to lock the two halves togetherof prevent inadvertent separation.CAUTIONVerify that mains power is OFF prior to making, or breaking, any system cableconnection.The sonar head to sonar processor cable must be modified to accommodate theumbilical cable. A typical installation uses a shortened version of the standardcable (wet-end only) to connect the head to a junction box on the vehicle. In thisconfiguration, the vehicle supplies the 24 VDC operating power for the head andserves the connection point for the uplink and downlink signals. The topside terminationwill have customer furnished cables from the topside umbilical terminationdevice to the rear of the sonar processor. A possible variation is splicing thedry end of the standard cable into the topside umbilical termination device.RESON recommends the use of a fiber-optic Uplink for this type of installationdue to the bandwidth and impedance requirements of this signal.2.5 Corrosion Avoidance Guidelines2.5.1 Aluminum AlloyThe standard 8101 Sonar Head housing is composed of an aluminum alloy. Thishead is provided with zinc alloy sacrificial anodes to protect it from galvanic corrosionwhile immersed in seawater. If the system is to be used in freshwater,magnesium alloy sacrificial anodes will be provided. Do not paint the anodes.The anodes should be inspected periodically for cleanliness and good physicalcondition. If an anode is loose, it must be replaced immediately, if not firmly attachedits effectiveness is greatly reduced. In addition, it is imperative that thehead be isolated electrically from the mounting structure for the following threereasons:______________________________________________________________________SeaBat 8101 Operator's Manual 2-7 Version 3.02