Furuno FCV-30 - Manual (Page 67)

2. WINDOW DISPLAYS
2-13
2.2.7 Marker zoom window
The marker zoom window zooms echoes within the expansion marker (blue dashed line).
This marker is operated the same as the horizontal VRM.
30
60
TS 00:00:28
34 42.6163' E
135 19.7405' E
20
40
0
Fish school
30
32
34
36
38
40
Zoomed fish school Marker zoom window
Marker change
button
Marker pos change
Expansion marker
Marker zoom window
Note: When the divided screen is in use, click the Marker change button to shift the
expansion marker between beams.