Simrad TV80, Reference Manual

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Related topics
Opening the Designer module, page 167
Gauges dialog box, page 181
Edit Gauge dialog box, page 183
Inspecting the receiver quality
The TV80 offers a spectrum analyser that shows you the signals from each hydrophone. The
TV80 allows you to inspect the quality of SR15 and SR70 Receiver Units. The graph in the
Spectrum
dialog box provides you with information about the background noise and the
signal strength in the selected frequency band.
Prerequisites
The following requirements must be met:
• The Receiver Unit is operational.
• Each input on the Receiver Unit is operational.
Context
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 the signal strength in the selected frequency band. With this information you can
identify noise and find the "cleanest" frequencies.
The graph plots data using a 16 colour palette. Red colour corresponds to the maximum
value defined, while blue is the minimum.
The graph in the
Spectrum
dialog box provides you with information about the background
noise and the signal strength in the selected frequency band. The graph plots data using a
16 colour palette. Red colour corresponds to the maximum value defined, while blue is
the minimum.
Procedure
1 Verify that one or several hydrophones are connected to the receiver.
2 Select the
Setup
icon to open the menu.
3 Select
Spectrum
to open the dialog box.
4 Select the hydrophone you want to inspect from the list provided.
Getting started