Operation Manual

8120 Installation and Operation Manual41
To show the Sonar window, press
DISPLAY
, then
select Sonar.
There are five kinds of sonar window. To use a
window, press
MENU
, select Sonar splits,
then select the type of window to use:
No split: Sonar history window at a single or
mixed frequency (see section 9-1).
Split zoom: Sonar history plus a zoomed
section (see section 9-2)
Split bottom: Sonar history plus a bottom
trace in a zoomed section (see section 9-3)
Split 50/200: Sonar histories at 50 and 200
kHz (see section 9-4)
Split A-Scope: Sonar history plus echo
strength (see section 9-5)
10 Sonar fishfinding: Windows
10-1 Sonar history window - no split
A Optional data header (see section 2-7-3)
B Optional compass (see section 2-7-4)
C Depth
D Colour bar
E Bottom
F Range
G Fish symbols with depth
H Depth line
The window scrolls from right (most recent
echoes) to left (oldest echoes).
If the window is split, adjust the split ratio if
required:
1 Press
MENU
and select Sonar window split.
2 Press
or
to adjust the ratio.
3 Press
ENTER
.
10-1-1 Extended history mode
To review an old sonar echo, use
and
to
move back and forward through the sonar
history. The time since the echoes shown on
the screen were recorded is displayed at the
bottom of the screen. Press
ESC
to return to
the most recent echo.
The digital depth shown is always the current
depth, even in extended history mode.
The History Position Bar indicates the age of
the most resent echo on the screen, and the
position of the current screen in the recorded
history.
History position bar
H
A
B
C
D
E
F
G