Lowrance electronic X135, X136DF, X125, X126DF manual Sensitivity & Auto Sensitivity

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Screen Command, left, and Screen Menu with Contrast bar selected, right.

To adjust the display's brightness:

Press ↓ to BRIGHTNESS. Press → or ← to move the bar. The left end of the scale is minimum contrast; the right end is maximum contrast.

To adjust the screen's display mode:

Press ↓ to DISPLAY MODEENTpress ↑ or ↓ to select modeEXIT.

Display Mode menu.

Sensitivity & Auto Sensitivity

The sensitivity controls the ability of the unit to pick up echoes. Sensi- tivity can be adjusted, because water conditions vary greatly. a low sensitivity level (from zero to 50 percent) excludes much of the bottom information, fish signals, and other target information.

High sensitivity levels let you see this detail, but it can also clutter the screen with many undesired signals. Typically, the best sensitivity level shows a good solid bottom signal with Grayline and some surface clutter.

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Contents X125, X126DF, X135, X136DF Lowrance Electronics Inc 12000 E. Skelly Dr Tulsa, OK USA Table of Contents Sec Sonar Troubleshooting Sec Supplemental Material Read Me First X136DF X126DFBack-up memory SonarHow Sonar Works How to use this manual typographical conventions Menu CommandsArrow Keys KeyboardInstructions = Menu Sequences Page Transducer Installation PreparationsRecommended Tools and supplies Selecting a Transducer LocationTransom Transducer centerline Hull bottom How low should you go?Good location Poor location Location Poor angle Shoot-thru-hull vs. Transom Mounting Assembling the bracketDot Ratchets Aligning the transducer on the transomRatchet Assembling the transducer Bolt Lock washer Nut Flat washerMetal Nut washer Rubber WashersTransom Drilling mounting holesAttaching transducer to transom Bottom Hull Flat-bottom hull Deep-vee hull Trolling Motor Bracket Installation single-frequency only TMB-S bracket Internal tooth washer Bolt Nut Flat washerPartial fish arches Transducer aimedEpoxy the transducer to a solid portion of the hull Spread epoxy here Sand this surface Shoot-thru-hull InstallationTransducer location High speed Trolling speed Speed/Temperature Sensors Sensor Chart Sonar unit rear view Two-temperature sensor installationTemperature sensor Temperature sensor SP-X speed sensorTransom Bottom of hull Optional Speed Sensor InstallationGood location Power Connections Power connections for the sonar unit Mounting the Unit Bracket, In-Dash or Portable Bracket Installation Front72.9 173.9 23.4 137.9 157.9 Millimeter 56.9 Inch In-Dash Installation Portable Installation146.5 113.5Cell battery Face CoverPage Basic Sonar Operation KeyboardMain Menu Power/lights on and offMenus Main Menu Commands Sonar Menu Commands Sonar MenuPages Page Page Basic Sonar Quick Reference Sonar Operations To adjust sensitivity Fish Symbols vs. Full Sonar Chart To Restore Factory SettingsOther Free Training Aids ASP Advanced Signal Processing To change the ASP levelTo adjust and turn on the shallow alarm AlarmsDepth Alarms To adjust and turn on the zone alarm Zone AlarmTo adjust and turn on the deep alarm Fish Alarm To turn the fish alarm onBrightness Calibrate SpeedChart Speed Contrast Depth CursorDepth Range Automatic Cursor line Depth boxTo switch to Manual Depth Range Depth Range ManualDepth Range Upper and Lower Limits To turn Auto Depth Range on againTo change the upper and lower limits Fish arches Area zoomedTo turn off upper and lower limits Fish I.D. Fish Symbols & DepthsFasTrack Page To turn the Fish I.D. feature on FishTrackTo turn on FishTrack Symbols with FishTrack depthsFishReveal To turn FishReveal on Fish Not Visible Fishfish arch Fish archesTo change the frequency setting to 50 kHz Frequency Change Transducer Frequency X126DF and X136DF onlyGrayline To change the frequency setting to 200 kHzTo adjust the Grayline level Hard Fish near Grayline Hard Bottom Muddy bottom Muddy bottom bottomOverlay Data HyperScrollNoise Rejection To turn off displayed data To change displayed data font sizePing Speed & HyperScroll To change Ping SpeedPop-up Help To turn off HyperScrollScreen Contrast and Brightness Reset OptionsReset Water Distance Sensitivity & Auto Sensitivity To adjust sensitivity in auto mode Automatic SensitivityTo turn Auto Sensitivity back on To adjust sensitivity in manual modeSet Keel Offset Set Language Software Version InformationSonar Chart Mode Sonar Chart Display OptionsTo change the chart mode color scheme Press MENUMENU↓ to Software InfoentFull Sonar Chart Split Zoom Sonar Chart Split Frequency Sonar Chart X126DF and X136DF onlyDigital Data/Chart Customizing the Digital Data/Chart Screen Sonar Simulator FlashGrafSurface Clarity Stop ChartTo adjust the Surface Clarity level Transducer Type X126DF and X136DF only Zoom & Zoom Bar Units of MeasureUpper and Lower Limits Zoom Pan Page Unit wont turn on Unit freezes, locks up, or operates erraticallyNo fish arches when the Fish I.D. feature is off NoisePage Page Index Page Supplemental Material How to Obtain Service… Not toll-freeAccessory Ordering Information for all countries Visit our web site

X126DF, X136DF, X135, X125 specifications

Lowrance, a leading name in marine electronics, has made significant strides with its line of fish finders and chartplotters, particularly the X135, X125, X136DF, and X126DF models. These devices are engineered for anglers and boating enthusiasts seeking advanced charting, navigation, and fish tracking technologies.

The Lowrance X135 is equipped with a 7-inch display, delivering a clear view of sonar readings and navigational data. Its advanced sonar technology includes a powerful 4000-watt peak-to-peak output, offering exceptional fish detection capabilities. The X135 also supports Lowrance's exclusive Broadband Sounder technology, providing detailed images of the underwater environment. This feature helps users identify fish, structure, and thermoclines with remarkable precision.

The X125 model, while similar in design, offers a 5-inch display size. The device also features a dual-frequency sonar, allowing users to switch between 50 kHz for deep water and 200 kHz for shallow water, enhancing versatility for varying fishing conditions. Its integrated GPS allows for waypoint marking and route tracking, ensuring you can revisit those promising fishing spots effortlessly.

For those looking for advanced dual-frequency capabilities, the X136DF and X126DF models take things a step further. Both models feature a split-screen view, enabling users to monitor sonar and chartplotting simultaneously. The X136DF includes advanced navigation functionalities with an internal GPS antenna, which simplifies the installation process, while the X126DF may require an external antenna for GPS functionality.

These Lowrance models come equipped with various user-friendly features, such as customizable display settings, allowing users to tailor the information presented to their preferences. Both the X136DF and X126DF support multiple languages, catering to a global audience of boaters and fishermen.

Moreover, Lowrance devices incorporate innovative networking capabilities that allow for the interconnection of multiple devices onboard. With NMEA 2000 support, users can integrate radar, autopilot systems, and other electronics for a cohesive and efficient boating experience.

In conclusion, the Lowrance X135, X125, X136DF, and X126DF offer a fantastic mix of performance, user-friendly features, and advanced technology. Each device is designed to provide valuable insights for anglers and boaters, ensuring a successful day on the water. Whether you're a novice looking to enhance your fishing experience or a seasoned pro in search of the latest technology, these models represent a reliable choice.
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