VEMCO – VR4-UWM Manual
14
2.4.4
In-air testing with Bluetooth®
Perform an in-air test using
Bluetooth®
communication to become familiar
with the equipment and to check that the VR4-UWM is detecting tags
properly. Follow the steps listed below to perform the in-air.
1.
Ensure the VR4-UWM is in operating mode (not Suspend mode). Instructions for exiting Suspend mode
are given in section 2.4.3.
2.
Activate a 69 kHz VEMCO coded tag. Hold the tag approximately 15 cm (6”) from the 69 kHz
hydrophone (the one with the larger tip) so the side of the tag is facing the side of the hydrophone. Make
sure there are no obstructions between the tag and the hydrophone. A VR100 receiver may be used to
audibly confirm when the tag is transmitting.
3.
Watch the status light on the VR4-UWM receiver. The light will flash red briefly for each acoustic ping
received. A long flash occurs when the receiver is writing information to its memory. Obtain a few
detections of the tag to verify it is being picked up consistently.
4.
Activate a VEMCO 180 kHz coded tag and hold it approximately 2-3 cm (1”) from the 180 kHz
hydrophone (the one with the smaller tip) with the side of the tag facing the side of the hydrophone. Do
not hold the tag too close. Make sure there are no obstructions between the tag and the hydrophone. A
VR100 receiver may be used to audibly confirm when the tag is transmitting.
5.
Watch the status light on the VR4-UWM receiver. The light will flash yellow briefly for each acoustic
ping received. A long yellow flash occurs when the receiver is writing the information to its memory.
Obtain a few detections of the tag to verify it is being picked up consistently.
Click the large “Close View” button (on left end
of ribbon) to disconnect. The VR4-UWM is now
in Record Mode – it will communicate through
the acoustic modem.
STEP 5
Enter something like “test” as the description of
the study in the Study Configuration window since
this will not be the final setup before the receiver
is released. Entering something like “test” for the
station name also helps in identifying any
received data as being test data.
Click “OK”
STEP 4
Enter “test”, or
something similar.
Make sure both
frequencies are checked
for testing later.
Perform air tests away from
electrical noise sources such
as motors, PC screens, or
fluorescent lights.