New Transducers 250C - Manual (Page 19)

Wide
beam
returns
Narrow
beam returns
Fish
symbol
B
ASIC
O
PERATION
> U
SING THE
S
ONAR
P
AGE
Fishfinder 250/250C Owner’s Manual 15
The display may also be set to show a split screen view of a zoomed
portion of the sonar, bottom lock (display scaled from the bottom
up), or a combination of these options (pages 17-18). For example,
you may choose to show dual frequency at a 2x zoom (Dual 2x) on
one half of the screen, with normal range dual frequency (Dual) on
the other half. The current display mode is shown at the bottom of
each sonar display.
The Fishfinder 250 displays sonar returns as shades of gray; stronger
returns are darker, and weaker returns are lighter. On the Fishfinder
250C, sonar returns are displayed as red (strongest), orange (strong),
yellow (medium), green (weaker), and blue (weakest).
The Fish Symbols option (page 22) allows you to find fish by
viewing the actual sonar data, a fish symbol or a combination of
both. Fish symbols appear as black on the Fishfinder 250 and green
on the Fishfinder 250C. When Frequency is set to Dual (page 14 ),
the appearance of the fish symbols (and simulated fish returns) will
change. Fish symbols from the narrower beam (200kHz) will be
solid (narrow returns), but the returns from the wider beam (50kHz)
will be hollow (wide returns). Simulated fish icons are displayed
in three different sizes based on the size of the return. Actual fish
returns may not always appear as perfect arches, due to the speed,
fish orientation, and/or other conditions.
For more information on understanding the sonar, see pages 31-33.
Split screen view
Fish symbols
Frequency
mode