Operation Manual
FarSounder, Inc.
F31552 (Rev. 2.6.1)
Page 7 of 56
The standard material for the Transducer Module pressure case is SS 316. To ensure the longest
operational life of the unit, it is recommended that the Transducer Module is not electrically isolated from
the rest of the vessel and that zincs are closely located to the Transducer Module. As with any other piece
of marine electronics, it is important to ensure that the Transducer Module does not become anodic (active)
relative to closely located materials.
For composite hulls, it is important that the Transducer Module is connected to the ship's ground. The is most
easily attained by connecting the fairing's inner mounting ring (generally this is a steel flange embedded
into a composite fairing) to the ship's ground.
Additionally, it is recommented that the Transducer Module be electrically connected to zincs. The simplest
way to do this on a composite hull is to weld a ground strap from the fairing's mounting flange to a hull
mounted zinc plate.
Another method is to attach zincs directly to the Transducer Module outside of the fairing. This can most
easily be implemented by using two (2) of the twelve (12) mounting bolts to secure zincs between the fairing
tube and the side of the urethane array face. This allows the zincs to be inspected and replaced by diver
without removing the Transducer Module.
Important
If painting the Transducer Module, be certain NOT to paint the urethane array face. Also, be
certain that the paint used will not dissolve, destroy, or otherwise harm the urethane since it is
likely that some paint will touch the edge of the urethane array face.
1.2. Power Module
FarSounder's Power Module is offered in a bulkhead mounted enclosure or a standard 19" 2U rack-mount
component. Both are designed to be mounted in a dry location. The Power Module houses the sonar
system's power supplies, transmit signal generator, and power amplifier. As with other shipboard electronics,
the unit should be shock mounted where appropriate. Shock mounting will generally improve the lifespan
of the unit and should be considered for installation locations that experience extreme shock or vibration.
However, this is not a standard requirement.
Figure 6. Power Module (rack mount version)
The Power Module should be located in a dry location. There are no user interface components on the
Power Module other than a power switch. For installation in inaccessible locations, the power input can be
put on a circuit breaker line with the switch in a convenient location.
Warning
Do not open the Power Module or allow it to get wet. Injury or death may result. There are no
user serviceable parts inside.
