Simrad TV80, Reference Manual

Page: 221 / 306

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Colour Scale
The colour scales used by the TV80 are designed to reflect the how strong the echoes are.
The echo strength is measured in decibels (dB). In the basic colour scale with 12 colours,
each colour represents a 3 dB step. This means that the entire scale covers 36 dB.
How to open
This function is opened from the
Active
menu.
Description
The
Colour Scale
settings control the sensitivity.
Ping-Ping Filter function
The
Ping-Ping Filter
analyses the historical information from previous consecutive pings in
order to remove unwanted noise and interference from the TV80 presentation.
How to open
This function is opened from the
Active
menu.
Description
The
Ping-Ping Filter
offers three different strengths. The echo information from two, four
or eight transmissions ("pings") are averaged to distinguish real echoes from noise and
interference.
Details
Off
The filter is disabled.
The historical information from previous transmissions ("pings") are not used to
remove noise and unwanted echoes.
Weak
Select Weak to allow the filter to compare the echoes from the latest two pings.
For the current echo to be shown, it must be present in both of these pings.
Functions and dialog boxes