Insignia 250DX User Manual

Operations Manual

If you are using the 250DX in Simulator when no transducer is connected,any selected options are lost when the unit is powered off. The 250DX willretu

depth of the water changes, the rangechanges as necessary in order to retaina bottom representation on-screen. When in Auto mode, the horizontalline a

distance measurement, so if the boat is moving up and down over flatbottom, the bottom depiction often appears in regular variations that matchwave ti

return meets certain additional criteria, afish symbol will be assigned. There arethree different size fish symbols used toindicate the intensity of t

12powered off, press and hold POWER for several seconds until a continuouschirp is heard. Light. LIGHT controls the unit’s display backlight. With the

13affect the menu adjustment.The ARROW buttons often can be usedwhen no menu is on-screen. In thesesituations, pressing the ARROW buttonaffects the fu

Menu FunctionsSensitivity. The Sensitivity function controls thesensitivity of the sonar receiver. The 250DXautomatically adjusts the level of receive

15Depth Range. The Depth Range functioncontrols the vertical distance displayed onthe graphic area of the display. There arenine depth ranges availabl

To return to automatic Depth Rangecontrol, press the MENU button untilthe Depth Range menu appears on-screen and use the UP ARROW toselect AUTO.Zoom.

17USING THE 250DXMENU FUNCTIONSAutomatic Zoom is especially helpful when looking for structure or bottomdetail. The Automatic Zoom keeps the bottom in

THANK YOUThank you for choosing Humminbird, America’s #1 namein fishfinders. Humminbird has built its reputation bydesigning and manufacturing top-qua

Fish Alarm. The Fish Alarm alerts you to thepresence of fish, or other targets not connected tothe bottom. The Fish Alarm has three differentsettings

the 250DX is operated from a batterysource, the voltage number can be used todetermine battery life. The 250DX willoperate at voltages from 10 to 20 V

20Display Speed. Display Speed controlsthe rate at which the graphic informationmoves across the display. There are 5possible speeds; the fastest rate

21Fish ID. There are three selections available:OFF, ID+ ON, and ADJUST. The factorysetting is ID+ ON. With Fish ID OFF, sonarreturns are displayed as

Numeral Size. Two options are available:BIG and SMALL. The factory setting is BIG.With this setting, the digital depth andspeed and temp numerals are

23Speed Offset. The Speed Offset option allows theuser to compensate for differences in hull design, andits effect on the accuracy of the speed measur

Reset. With the many User Options available tocustomize the 250DX, it is easy to configure the unitin such a way that it is detrimental to a particula

MAINTENANCEMAINTENANCEBoat Speed/Water Temperature Connection. Other connections testedinclude the boat speed and surface water temperature sensors. T

26mild cleaner. Do not wipe while dirt or grease is on the lens. Be careful toavoid scratching the lens.• If your boat remains in the water for long p

27MAINTENANCETROUBLESHOOTINGIf the unit is wired through a fuse panel, ensure the panel is powered. Oftenaccessory fuse panels are controlled by a sep

INSTALLATION PREPARATION . . . . . . . . . . . . . . . . . . . . . . . 2Parts Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Ac

28If you are using a transducer switch to connect two transducers to the 250DX,ensure the switch is in the correct position to connect a transducer th

297. My unit loses power at high speeds.Your 250DX has over-voltage protection that turns the unit off when inputvoltage exceeds 20 VDC. Some outboard

30MAINTENANCECUSTOMER SUPPORTCUSTOMER SUPPORTIf you have any problems or questions with your Humminbird unit, contactyour local distributor.Humminbird

31Operating Frequency . . . . . . . . . . . . . . . . . . . . .200 kHz and 83 kHzPower Output . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remove and use forTransducer InstallationPLACE EITHER CORNERON DEADRISE ANGLETOPUse ⁵⁄₃₂" (4.0mm) drill bitDrillDrillUse with XT series Transduce

P/N 530975-2

2INSTALLATION PREPARATIONPARTS SUPPLIEDPARTS SUPPLIEDBefore installing your 250DX, please ensure the following parts areincluded in the box:• 250DX fi

3INSTALLATION PREPARATIONINSTALLATION OVERVIEWdisplay on the control head. It should be installed in contact with thesurface of the water in an area t

4Inside the hull installations require no holes be drilled into the boat andthrough experimentation, high-speed operation comparable to transommountin

(which do not conduct sonar signals) make inside the hull mountinginadvisable.Thru-hull mounting may require the use of a fairing block to level thetr

USING THE 250DXHOW SONAR WORKS6HOW SONAR WORKSYour Humminbird unit uses sonar tolocate and define underwater objects,define the bottom terrain, as wel

7USING THE 250DXSIMULATOR OPERATIONActual depth capability depends on factors such as bottom hardness, waterconditions, and transducer installation. U