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Northstar Explorer 657 Installation and Operation Manual40
To show the Sonar display, press , then
select Sonar.
There are five kinds of sonar display. To use a
display, press
, select Sonar splits,
then select the type of display to use:
No split: Sonar history display at a single or
mixed frequency (see section 9-1).
Split zoom: Sonar history plus a zoomed section
(see section 9-2).
Full screen zoom: 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).
9 Sonar fishfinding: Displays
9-1 Sonar history display - no split
Split A-Scope: Sonar history plus echo strength
(see section 9-5).
If the display is split, adjust the split ratio if
required:
1 Press
and select Sonar display split.
2 Press
or to adjust the ratio.
3 Press
.
C
E
A Optional data header (see section 2-7-3)
B Depth
C Color bar
D Bottom
E Range
F Fish symbols with depth
G Depth line
The window scrolls from right (most recent
echoes) to left (oldest echoes).
A
B
D
F
G