New Transducers 250C 用户手册

Wide 

beam 

returns

Narrow 

beam returns

Fish 

symbol

B

ASIC

 O

PERATION

 > 

U

SING

 

THE

 S

ONAR

 P

AGE

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