Vemco HR2, User Manual

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1.2 HR2 Case and Parts
The
HR2
receiver is housed in a corrosion resistant black plastic high pressure case. The case consists
of two main parts:
l
the end cap which houses the hydrophone and internal battery tray that holds the battery, and
l
an
outer cylinder
that is unscrewed to install the lithium or alkaline battery pack.
The HR2 is shipped closed, with the battery
installed and connected
. It is shipped with a dummy plug
connected to the communications port on the bottom of the receiver.
The only time the case needs to be opened is when replacing the battery or preparing the unit for long-
term storage (6 months or more) .
IMPORTANT: The receiver is NOT ready to record data yet, as it is shipped in Suspend Mode.
Your first task is to connect it to a computer and the Fathom software and place it in Record Mode .
For more information, see "Getting Started", on page 15 .
Figure 1-1: HR2 Receiver with external Dummy Plug installed
WARNING: The HR2 pressure case and seal have a maximum static depth rating of 300 meters
(440 psi) . Physical shocks to the receiver, such as bumping into a solid object when it is at any depth,
can result in a considerably higher pressure on the casing than just the depth pressure and water
may enter the HR2 case.
If the O-rings or their mating surfaces are dirty or damaged, then water may also enter the case. If
you are suspicious that water has entered the case, then follow the suggestions in "I Think The Case
Might Be Pressurized", on page 176 .
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HR2 Receiver User Guide