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• Background Color (Fishfi nder 250C only) — allows you to change the background color of the
sonar display. Choices are Black, Blue or White.
• Number Size — allows you to choose between a Normal or Large sized Basic depth/temp/speed
display. This does not change the Advanced data fi eld number sizes.
• Temperature and Water Speed — hides or displays temperature and water speed on the Sonar
Page. When set to ‘Auto’, the unit automatically displays this information only if it is received from
the transducer.
Tools Tab
Controls the display of useful sonar tools. The following settings are available:
• Flasher — this option activates a graphic Flasher representation, displayed on the right side of the
graph. The graphic Flasher displays structure and bottom returns much the same as a true Flasher.
You may fi nd this feature particularly useful when using ‘Fish Symbols’ (see pages 11 and 16).
• Color Bar — shows a gradient scale of the current Target Level setting (see page 13).
• Temperature Graph — toggles On or Off the display of a temperature graph on the Sonar Page.
• Advanced Data Fields — toggles On or Off the Advanced data fields on the Sonar Page
• Confi gure Advanced Data Fields — activates the Advanced Data Field Setup screen
Confi guring Advanced Data Fields
The top left of the screen contains confi gurable data fi elds for the sonar display. By default, the Basic
display shows the depth, water temperature and speed (depending on the Graph Tab settings and type of
transducer/sensors attached). The ‘Confi gure Advanced Data Fields’ option in the Tools Tab allows you to
customize the data fi elds that are displayed. The Advanced display shows a larger, confi gurable data fi eld
with a white background. The Data Field Setup screen allows you to specify the type of data displayed and
either a Narrow (Small) or Wide (Larger) size format for each data fi eld.
The following selections require the proper NMEA data (see pgs. 5-6) in order to display information in
a data fi eld: Bearing, Compass, Course, Distance to Next, Off Course, Pointer, Position, Speed, Time Of Day,
Track, Turn, and VMG. NMEA Input/Output must also be enabled to receive this data (see pg. 20).
Unit Operation
Main Menu Options
Sonar Page With
Advanced Data Fields
Main Menu - Tools Tab
250C Manual.indd 17 1/27/2004, 3:55:10 PM