1 – Introduction
DPN 402197 Issue 7.1
© Teledyne Limited
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1 Introduction
The HydroPACT 350 system is a turnkey solution for performing accurate submarine surveys on tone-
carrying cables. It operates in real time and provides accurate measurements at a rate that allows
deployment on board faster ROVs. The measurement technology used by the system also allows it to
operate out of water with no degradation in performance, range or accuracy. You may therefore use the
system for land-based or amphibious survey applications. The burial state of the target has no effect on
system operation.
This manual contains full installation and operating instructions and is an important part of the 350
system. You should ensure the manual remains easily available for use by those who will install,
operate and maintain the system.
1.1 Conventions used
This manual uses the following conventions that signal important Warnings, Cautions and Notes:
WARNING
A
Warning
indicates the risk of death or serious injury to personnel.
CAUTION
A
Caution
indicates the risk of injury to personnel, or damage to equipment, or
loss of data.
NOTE
A
Note
emphasises important information about the use of the product.
Throughout this manual, unless stated otherwise, all measurements conform to the SI standard of
units.
1.2 System Description
TSS has designed the HydroPACT 350 system primarily for use in surveying operations on submarine
cables. In this application the system measures, displays and records the position of the target relative
to the ROV, and its depth of cover beneath the seabed.
Operation of the system is unaffected by the burial state of the target cable, the presence of non-
ferrous metallic objects, or the heading of the search ROV.
shows a typical stand-alone configuration for the 350 system that has the topside computer
installed on a surface vessel and the subsea components mounted on the ROV.
identifies the
individual components of the installation.