Operator`s manual

Echo menu Chapter 5-5
5.5 Echo quick menu
A number of echo features can easily be accessed from the Echo
quick menu.
From active echo display:
ENT
Call up the Echo quick menu with access to the following features:
Echo quick menu
1
Change frequency
2
Hide A-scope
3
Standard echo display
4
Bottom lock display
5
Zoom display
6
Shift display
ECHO
Transmit power off
MENU
Exit
1
Change frequency will toggle between 38 (CX44/54), 50 or 200 kHz
displays (Airmar transducers) to suit the task. 200 kHz is for general
purpose and offers optimum discrimination and a narrow transmit-
ter beam. 38/50 kHz is for searching in a wider area, determining
bottom conditions and going the deepest.
2
Activate/Hide A-scope The amplitude scope at the right side of the
echo display indicates the precise amplitude or strength of the last
received ping (sounding), which often can be used for determining
individual species of fish or hardness of the bottom.
3
Standard echo display Return to the basic presentation mode (stand-
ard display) from echo display with an added feature e.g. bottom
expansion, VRM expansion, etc.
4
Bottom lock display The advanced bottom lock and expansion
feature ensures a reliable depth readout and provides a compressed
standard display in the upper half of the display. The bottom area
can be magnified for better separation of echoes. The actual range of