Lowrance electronic X105C DF, X100C manual Basic Sonar Quick Reference

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Basic Sonar Quick Reference

1.Mount the transducer and unit. Connect the unit to electric power and the transducer.

2.Launch your boat.

3.To turn on the unit, press and release PWR key.

4.Head for your fishing grounds. Your unit automatically displays digi- tal depth and surface water temperature in the corner of the screen.

The auto settings will track the bottom, displaying it in the lower por- tion of the screen. The full sonar chart will scroll from right to left, showing you what's under the boat as you cruise across the water.

5. As you're watching the sonar returns, you can change the display by:

Zoom in to enlarge the chart for more detail: press ZIN.

Zoom out to return to full chart mode: press ZOUT.

6.If necessary, adjust sensitivity to improve chart readability. Press

MENUENT and the Sensititvy Menu will appear on the left of your screen. Use ↑ and ↓ to change the setting.

Boosting sensitivity will show more information on your screen, which may cause clutter. Reducing sensitivity will filter out some information, but could omit important images. We recommend adjusting sensitivity until the background is lightly "peppered" — that is, scattered dots ap- pear, but individual objects (like fish arches or bottom structure) can be easily picked out of the background.

7.Watch the display for the appearance of fish arches. When you see arches, you've found fish! Stop the boat and get your lure or bait into the water at the depth indicated on the sonar chart.

8.Gauge the fish depth by visually comparing the fish arches with the

depth scale on the right side of the screen, or get a more accurate measure with the Depth Cursor. Press MENU↓ to DEPTH CURSORENT. Press ↓ (or ↑) to align the cursor line with the fish arch. The exact depth appears in a box at the right end of the cursor line. To clear the cursor, press EXIT.

9.If you are drifting at a very low speed or anchored, you are not mov- ing fast enough for a fish to return the tell-tale fish arch signal. As you drift over a fish, or as a fish swims through the transducer's signal cone, the fish echo will appear as a straight line suspended between the surface and the bottom.

10.To turn off the unit, press and hold PWR key for three seconds.

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Contents X100C X105C DF Lowrance Electronics Inc 12000 E. Skelly Dr Tulsa, OK USA Table of Contents Page Read Me First Page How Sonar Works Menu Commands How to use this manual typographical conventionsArrow Keys KeyboardPreparations Transducer InstallationDual-frequency transom installations Single-frequency transom installationsSingle-frequency trolling motor installations Shoot-through hull installationsGood location Poor location Location Poor angle How low should you go?Deadrise less than Strakes Pad Transom Transducer centerline Hull bottom Shoot-thru-hull vs. Transom MountingDot Assembling the bracketTransducerTransducer bracket Ratchet Aligning the transducer on the transomRatchets Drilling mounting holes Assembling the transducerTransom Attaching transducer to transomBottom Hull Flat-bottom hull Deep-vee hull TMB-S bracket Internal tooth washer Bolt Nut Flat washer Trolling Motor Bracket Installation single-frequency onlyTransducer aimed Hulls With Floatation MaterialsPartial fish arches Transducer location High speed Trolling speed Testing Determines Best LocationTrue bottom Second bottom Manual range setting Spread epoxy here Sand this surface Shoot-thru-hull InstallationOptional Speed Sensor Installation Optional Temperature SensorTransom Bottom of hull Good locationPowering a Nmea 2000 Buss Nmea 2000 Power cable Power ConnectionsPowering Your Unit Power Supply cable red and black wires Power connections for the units in this series Nmea 2000 Cable Connections Connecting to a Nmea 2000 NetworkNmea 0183 Cable Connections To Nmea To sonar Network port Units Network SocketMounting the Unit Bracket, In-Dash or Portable Front Bracket Installation173.9 77.1 27.6 137.9 Millimeter 56.9 Inch Portable Installation Other AccessoriesIn-Dash Installation Face Cover Keyboard Basic Sonar OperationMain Menu Power/lights on and offMain Menu Pages Page Sonar Page, showing full sonar chart mode Basic Sonar Quick Reference Sonar Operations To adjust sensitivity To Restore Factory Settings Fish Symbols vs. Full Sonar ChartOther Free Training Aids Page To change the ASP level ASP Advanced Signal ProcessingDepth Alarms AlarmsZone Alarm Fish Alarm Calibrate Speed Chart SpeedColorLine Thin or no ColorLine Wider ColorLine Depth CursorCursor line Depth box Depth Range AutomaticDepth Range Manual To switch to Manual Depth RangeDepth Range Upper and Lower Limits To turn Auto Depth Range on againFish arches Area zoomed To change the upper and lower limitsTo turn off upper and lower limits Fish I.D. Fish Symbols & DepthsFasTrack To turn on FishTrack To turn the Fish I.D. feature onFishTrack Frequency Change Transducer Frequency X105C DF only Symbols with FishTrack depthsTo change the frequency setting to 200 kHz To change the frequency setting to 50 kHzHyperScroll Noise RejectionTo turn off displayed data To change displayed data font size Ping Speed & HyperScrollTo change Ping Speed To turn off HyperScroll Reset OptionsReset Water Distance Set Keel Offset Automatic Sensitivity Sensitivity & Auto SensitivityTo turn Auto Sensitivity back on To adjust sensitivity in auto modeTo adjust sensitivity in manual mode Sonar Page & Sonar Chart Display Options Sonar Color ModeTo change the chart mode color scheme Full Sonar ChartDigital Data/Chart Split Zoom Sonar ChartCustomizing the Digital Data/Chart Screen FlashGraf Flasher Sonar SimulatorSurface Clarity Stop ChartTo adjust the Surface Clarity level Zoom & Zoom Bar Upper and Lower LimitsZoom Pan Page Unit freezes, locks up, or operates erratically Unit wont turn onNoise No fish arches when the Fish I.D. feature is offPage Page Supplemental Material Index Page Page Page Lowrance Electronics Full ONE-YEAR Warranty Not toll-free How to Obtain Service…Accessory Ordering Information for all countries Visit our web site