VEMCO - VR2AR / VR2AR-X Manual
15 March 2019
2
1.2
VR2AR / VR2AR-X Case
The VR2AR / VR2AR-X receiver is housed in the black plastic high pressure case. The case consists of an
outer cylinder that is removed to install the D (
VR2AR
) or DD-cell (VR2AR-
X
) Lithium battery, the endcap
which houses the hydrophone and connects to the metal internal casing, and the mooring lug that separates
from the case to allow the receiver to rise to the surface. When the outer cylinder is removed, the internal
casing protecting the electronics can be seen. The case dimensions are found in section 6.5.
A crucial part of the VR2AR 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. The
VR2AR’s hydrophone also acts as a speaker and transmits a unique ID code at a user-set interval. This
ability to both listen and broadcast allows the VR2AR to communicate with a VR100-200 through a
transponding hydrophone. Like all hydrophones, the VR2AR hydrophone is a sensitive piece of equipment.
Avoid striking the hydrophone or allowing any object to impact it as damage may occur that would prevent
the receiver from detecting tags or communicating with the VR100-200.
Retaining O-ring:
Holds the Retaining Pin in
place.
Hydrophone:
the
receiver’s
“microphone/speaker” and
most delicate part.
Mooring Lug:
This hole is used to secure the
VR2AR to its mooring. The mooring lug is left
behind when the acoustic release occurs.
Pressure Sensor:
Used to measure depth.
Measurements are stored in memory and
reported to VR100-200 during acoustic
communication.
Bluetooth Activator Hole:
Place the narrow
end of the Bluetooth Activator in here to
prepare for communication. Section 3.3 has
more information on the Bluetooth Activator.
Status Light (LED)/Release Valve:
The
light flashes red or green to indicate the
receiver’s status. Section 6.2 has the full
description.
The Release Valve will open
if
the internal
pressure is greater than the external
pressure (see section 8.2.2).
Never cover
this valve.
Do not bump the hydrophone
or the receiver may be
damaged and unable to detect
transmitters or communicate.
Float Attachment Bracket:
contains two
9/16” holes for attaching a floatation device.
2 red flashes every 5 sec =
Recording Mode
1 quick red flash =
acoustic ping received
1 quick green flash =
acoustic ping was transmitted
(complete list in section 6.2)
