Simrad EK15 Reference Manual page 41

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.
However, as the number of colours can differ, and dedicated colour schemes can be
used, this is not necessarily correct. A high numeric TVG value displays weak echo
signals properly while the stronger signals saturate into the darker colours. A low
numeric value displays strong echo signals properly. Weak signals below the lower
limit of the colour scale are not displayed (the display background colour is used).
If you choose to use many colours, the resolution of the EK15 presentation is greatly
improved. It is then easier to distinguish the difference between the various echoes
of different size and/or target strength.
To change the colour scale, use the
You can also access the colour scale using the
E
Date
This field on the
Note that during replay, the date of the replay file is shown.
An "R" is displayed in front of the date to identify this.
F
Time
This field on the
Note that during replay, the time in the replay file is shown.
Related topics
• Title Bar on page 106
• Screen captures on page 130
• Colour Scale information pane on page 126
• Colour Setup dialog box on page 160
351718/C
Colour Setup
presents the current date.
Status Bar
presents the current time.
Status Bar
dialog box on the
Display
information pane.
Colour Scale
Getting started
menu.
39