VEMCO – VR100 Receiver Operating Manual – Page 51
Decibel (dB):
A decibel is a logarithmic unit used for measuring the strength of a signal. A decibel is
one tenth of a "bel".
Detection Parameters:
The detection parameter determines what is identified as a received ping and
what is considered background noise (see section 4.2.1).
Pinger:
A VEMCO tag that contains no sensors. It can have either a coded or continuous transmission
schedule.
Position dilution of precision (PDOP):
PDOP is a unitless measure that indicates when satellite
geometry will provide the most accurate results. A low PDOP indicates the satellites are nicely
arranged to give a good position. The PDOP may be improved by facing the VR100 GPS antenna
towards the equator where more satellites are located.
Tag:
A VEMCO tag is an acoustic transmitter that is attached to a marine creature and transmits an
acoustic signal. The acoustic signal is received by a VEMCO receiver. VEMCO tags can transmit
either a coded or continuous signal, with or without sensor data. After a tag is powered, it will
continue to broadcast according to factory setup until powered down.
Sensor transmitter:
A VEMCO tag that has at least one sensor. The type of sensor is usually included
in the transmitter’s name. For example, a V16P has a pressure (depth) sensor and the V16T has a
temperature sensor. A sensor transmitter can also have either a coded or continuous transmission
schedule.
5.4 TROUBLESHOOTING
Trouble
Possible Solution
Can’t hear audio signal but detection
indicator light is flashing.
1.
Volume is too low.
2.
Audio is muted (see section 4.2.1).
3.
Headphones are plugged into VR100.
Display blinks and receiver makes a
repeated clicking sound.
Battery is low and needs to be re-charged (see section 3.3.1).
Receiver won’t turn on after I turned
it off.
The battery may need to be charged (see section. 3.3.1).
Computer does not see the receiver
when the USB cable is plugged in.
1.
Turn VR100 off and then back on.
2.
If using an external USB hub, as suggested (see front of
manual), then check that the hub is powered.
