VEMCO - VR2 Manual
2
1.2
VR2 Case
The VR2 receiver is housed in the black plastic high pressure case. The case consists of an outer cylinder that
is removed to install the D-cell Lithium battery, and the endcap which houses the hydrophone and connects to
the plastic internal casing. When the outer cylinder is removed, the internal casing protecting the electronics
can be seen.
A crucial part of the VR2 is the hydrophone, located at the top of the receiver. The hydrophone is similar to a
microphone – it “listens” for sounds and transfers them to the electronics inside the receiver. Be very careful
not to bump the hydrophone or damage may occur that may prevent the receiver from detecting tags.
The VR2 case only needs to be opened when the battery must be installed or replaced.
Cable Tie Groove:
This is the second of the two grooves.
Hydrophone:
the
receiver’s “microphone”
and most delicate part.
Attachment Hole:
This hole, which is almost 10 mm in diameter, is used with the
Cable Tie Grooves to secure the VR2 while it is deployed. Section 4.2 has more
attachment details.
Cable Tie Groove:
These grooves (there are two) are used to attach the VR2 to a
line – see section 4.2.
Probe Hole:
Communication probe is inserted here. Hole is stepped so the
Communication Probe can only be inserted from only one direction. Section 1.2.2
has more information on the Communication Probe.
Status Light (LED):
The light flashes red to indicate the receiver’s status. Section
1.2.1 has the full description.
Do not bump the hydrophone
or
the receiver may be damaged and
unable to detect transmitters.
Status Light (LED) Meanings:
No flashes = not initialized or no power
2 quick flashes every 5 sec = Recording Mode
2 quick flashes every 10 sec = Memory Full
1 quick flash = acoustic ping received
1 bright, long flash = detection written to memory