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BASIC OPERATION > USING THE MAIN MENU
Fishfinder 250/250C Owner’s Manual 27
System Tab
The System tab controls various system and interface settings.
Main Menu—System tab
The following settings are available:
• Beeper—controls audible beep. Select from Off, Alarms
Only (sounds for alarms/messages), or Key and Alarm
(sounds for key presses and alarms/messages).
• Display Mode—select Fishfinder to display the scrolling
sonar image on the Sonar page, or select Depth Sounder to
show only numeric data for Depth, Water Temp, and Water
Speed.
• Language—select from various languages for the unit’s on-
screen display.
• Simulator—lets you simulate unit operation using a Depth
Only, Depth/Temp, Depth/Speed, or Depth/Temp/Speed
transducer. If prompted, choose No to the retail demonstration
mode for normal consumer simulator use. If the unit does
not detect a transducer, it will automatically enter Simulator
mode. While in Simulator mode, a “Running Simulator”
message appears after 2 minutes of inactivity.
• NMEA Input/Output—controls the input/output of NMEA
0183 Version 2.3 data to/from the unit. This setting must be
On in order to receive GPS navigational data and send Sonar
NMEA data. See pages 8-9 for details on available NMEA
sentences.
• Factory Settings—restores all settings to the original factory
default values for the entire unit.
• Software Version—displays the unit’s software version and
electronic serial number.
• Reset Odometer—this will only appear if you are using a
speed-capable transducer/sensor. Resets the odometer field
back to zero. See “Configuring Advanced Data Fields” on
page 23 for more information.