Simrad TV80, Reference Manual

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406388/B
Maximum
You can define the maximum value to trigger the alarm.
Message
Select this option if you want a warning message to appear automatically on your
presentation. Even if this option is not selected, the
Alarms
button on the top bar will
change its colour to red.
Audio
The audible alarm signal can be controlled using this function; you can enable or
disable an alarm tone.
Related topics
Setting up the sensors alarms, page 84
Spectrum dialog box
The TV80 offers a spectrum analyser that shows you the signals from each hydrophone. The
Spectrum
dialog box thus provides you with an overview of the current hydro-acoustical
conditions. You can use this function to "see" the signals from each hydrophone, as well
as the background noise.
How to open
This dialog box is opened from the
Setup
menu.
Description
The quality of the
acoustic communication
link between the sensors
and the receiver can be
challenged by noise.
When noise appears in
the same frequency range
as the sensors are using
for their communication,
the resulting information
may be unstable or
unreadable. The graph in
the
Spectrum
dialog box provides you with information about the background noise and
Simrad TV80 Reference Manual