Simrad TV80, Reference Manual

Page: 163 / 306

406388/B
161
If you do not want to see the echogram from 0 meters, you can establish an offset in
the echogram in the
Start Range
function.
•
Gain
When you configure the PX TrawlEye, you can select the key parameters related to its
echosounder, check the battery status or even configure some special features like the
learn mode. The
Gain
function allows you to change the display gain.
•
Horizontal Axis
The echograms travels from right towards left across the TV80 presentation.On the
Horizontal Axis
function you can choose the horizontal scale of the PX TrawlEye
echogram. This controls the "speed" of the echogram.
•
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. The
dynamic range of the TV80 is much larger. The
Colour Scale
parameters allow you to
change the lower limit of colour scale range to match the current echoes.
•
Range Marker
The
Range Marker
allows you to place a visual marker, which is a thick red horizontal
line, to help you visualize and analyze the echoes on the echogram view. The options
available depend on the values you defined in the
Range
and
Start Range
functions.
•
Ping-Ping Filter
The
Ping-Ping Filter
analyses the historical information from previous consecutive pings
in order to remove unwanted noise and interference from the TV80 presentation.
Context sensitivity
This menu is only available if a TrawlEye view is “active”.
To activate a TrawlEye (or echogram) view, click in it.
Menu system