Removing Noise And False Echoes From The Echogram; Choosing The Colours Used To Present The Echograms - Simrad ES80 Reference Manual

Removing noise and false echoes from the echogram

The
Ping-Ping Filter
in order to remove unwanted noise and interference from the ES80 presentation.
Context
The following filter options are provided.
• : The filter is disabled. The historical information from previous transmissions
Off
("pings") are not used to remove noise and unwanted echoes.
• : For the current echo to be shown, the same echo must be present in at least
2 of 3
two of the previous three pings.
• : For the current echo to be shown, the same echo must be present in both of
2 of 2
the previous two pings.
• : For the current echo to be shown, the same echo must be present in all of
3 of 3
the previous three pings.
Procedure
1 Open the
Active
2 Locate the
Ping-Ping Filter
3 Choose the required setting.
4 Select
Apply to All
the same type.

Choosing the colours used to present the echograms

Several different colour scales are predefined and available for the presentation of
echograms. You can easily choose which colours to use. The presentation colours have
no effect on the operational performance of the ES80. The
controls the presentation colours used by the ES80. This includes the palette ("skin"), the
number of colours in use, and the colour scale.
Context
Which colour scale to use is mainly a personal preference based on ambient light
conditions, the nature of the echoes and your own experience.
Keep in mind that in the basic scale with 12 colours, each discrete colour represents a
3 dB range of echo signal strength. This implies that the next colour is selected every
time the echo strength is doubled.
406273/C
analyses the historical information from previous consecutive pings
menu.
.
if you wish to use the chosen setting on all the echograms of
Operating procedures
dialog box
Colour Setup
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