VEMCO - VR2Tx Manual
15 March
2019
1
1
Introduction
1.1
System Overview
The VR2Tx (Receiver and Transmitter) is a submersible, single-channel acoustic receiver
capable of transmitting its assigned ID code, identifying other VEMCO coded transmitters in
the area, and acoustically communicating with a VR100-200 receiver. The receiver operates
on a factory set frequency of 69 kHz.
The VR2Tx is housed in a corrosion resistant cylindrical plastic high pressure case. The case
incorporates an integral hydrophone at one end of the case. The VR2Tx has the ability to:
Detect VEMCO 69kHz coded tags
Store detections and events within internal memory
Transmit an ID code at a user chosen rate (select transmitting options to choose from)
Communicate with VUE software through a Bluetooth connection
Respond to a VR100-200 without entering a specific serial number or location
Communicate additional status information to the VR100-200 and make changes to
select receiver and transmitter operations while deployed, such as power settings
The VR2Tx communicates to the surface through our VR100-200 active tracking receiver. It
is compatible with all VR100-200 models sold since January 2013. Customers will
require a new transponding hydrophone to attach to the VR100 to communicate with either
the VR2Tx or the VR2AR. VR2Tx receiver information that can be accessed through the
VR100-200 includes:
Unit health
Number of detections
Tilt and temperature
Battery life and memory usage
Receiver range which will aid in locating the VR2Tx
Built in Transmitter configuration allowing users to change the power setting as well
as enable and disable the transmitter
Some common uses for VR2Tx receivers are:
Monitoring fish movements using acoustic gates across shorelines
VEMCO Positioning System (VPS) arrays to track animals within a specific area
WARNING
The VR2Tx pressure case and seal have a maximum static depth rating of
500 meters
(730 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
VR2Tx case. If the O-rings or their mating surfaces are dirty or damaged, then water may also enter the
receiver case. If you are suspicious that water has entered the receiver, then follow the suggestions in
section 8.2.2 for troubleshooting a pressurized case.
