1. OPERATION
1-28
1.13.2
Bottom zoom mode
This mode magnifies the seabed, and also any fish near the seabed, on the left-side
of the screen, and is useful for determining seabed contours. When the seabed depth
increases, the display automatically shifts to keep the seabed echo at the lower part
of the screen.
1.13.3
Marker zoom mode
The marker zoom mode magnifies the specified area of the normal picture to full ver-
tical size of the screen on the left-side of the screen. You may specify the portion to
expand by operating the horizontal VRM (Variable Range Marker). The area between
the VRM and zoom marker is expanded. This mode is useful for determining the size
of fish in the midwater.
Bottom zoom
mode displayed
Split beam display
Zoom area automatically follows the
seabed when the depth changes.
Zoom markers
Seabed echo
Seabed echo
BZ SB/BZ
Marker zoom
area displayed
Zoomed area
Zoom marker
Split beam display
Horizontal VRM
MZ SB/MZ
