Vemco VR4-UWM User manual

Use these checklists to help you prepare
your VR4-UWM for deployment, successfully
deploy the receiver, and gather the data
when you return to the deployment location.
Do not bump the VR4-UWM
hydrophone or expose it
to extreme temperature
variations.
Doing so may damage the receiver and
render it unable to detect transmitters.
Electronics inside the case must NEVER come in
contact with any water or the VR4-UWM will be
damaged.
FBenthos Deck Box - fully charged prior
to eld day and/or make sure you have
a “clean power source” to power the
unit.
FBenthos surface modem transducer
FDummy plug if receiver has an unused
external connector (serial port)
FLaptop with latest VUE software and
VR4-UWM user manual installed
FDB-9 to USB adapter (if necessary) with
software drivers installed
FComplete mooring inventory
FVR4-UWM receiver
FVEMCO Comm key
(magnet)
FGPS
FBluetooth® USB adapter
FSerial cable
Equipment
Initialize VR4-UWM before deploying. Use
the magnet and the VUE software (Bluetooth
communication) and start recording to remove the
receiver from Suspend mode.
Do not open the case except to change battery.
This receiver was sealed and pressure tested prior to
shipping.
Never deploy a VR4-UWM beyond 500 meters depth.
Do not deploy VR4-UWM receivers with the same
modem address within 5 km of each other. Doing
so could disable modem communications with the
surface acoustic modem.
Do not allow the VR4-UWM to be dropped or struck
against other objects.
Do not mix dierent metals, especially in contact
with each other. This will promote galvanic corrosion
and cause rapid failure of the hardware.
Initializing the VR4-UWM will erase the receiver’s
memory. Retrieve all detection logs before the VR4-
UWM is initialized.
Important
FMake sure latest VUE version is installed on PC, including the latest manuals.
FStart a study using VUE software and Bluetooth communication (exit Suspend mode).
FPerform an in-air test (see manual) using Bluetooth communication.
FPerform an in-air test (see manual) using Benthos acoustic modem communication.
Preparation - On Land
Never cover the Status Light/
Release Valve.
The Release Valve must be able to pop
open if needed and must not be blocked
by tape or paint.
VR4-UWM Receiver
Checklists

FAt desired location, turn o the boat’s depth sounder.
FMechanically secure the Benthos cable to the surface modem transducer using a shackle and place in
water. Never rely on the electrical connector to support the tension in the cable.
FConrm that Status Light gives 2 quick ashes every 5 seconds (initialized); red = 69kHz; yellow = 180kHz.
FInspect case, especially pressure relief valves (make sure they’re ush with surroundings).
FDeploy the VR4-UWM in a vertical position – no more than 10° tilt angle.
FCommunicate withVR4-UWM while it is being deployed to monitor the tilt of the receiver. The hydrophone
heads should always be pointing up.
FRecord GPS position of receiver; position can be tuned if depth is known (see manual).
Deployment
FReturn to GPS position or receiver (recorded during deployment).
FSet up surface modem (connect Deck Box to PC and deploy surface modem).
FTurn o boat’s depth sounder during acoustic communication.
FOpen VUE software and select the desired Ooad icon (usually the Ooad New Data option).
FIf data to be used in a VPS study, then answer “Yes” to the “Ooad high-resolution VPS data?” question that
appears.
FMonitor communication while data is being ooaded. Make adjustments as needed (to power level,
boat position, etc.).
FEnd communication when data ooad is completed.
Data Retrieval
www.vemco.com
[phone]
DOC-5461-02 (CL)
VR4-UWM Receiver
Checklists