Lowrance electronic X125, X135, X136DF Set Keel Offset, To adjust sensitivity in manual mode

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To adjust sensitivity in manual mode:

1. First, turn off Auto Sensitivity: from the Sonar Page, press MENU↓

to AUTO SENSITIVITYENT.

2.Press ↑ to SENSITIVITYENT and the Sensitivity Control Bar appears. Press ↓ or ↑ to pick a different sensitivity setting. When it's set at the desired level, press EXIT.

To turn Auto Sensitivity back on:

From the Sonar Page, press MENU↓ to AUTO SENSITIVITYENTEXIT.

NOTE:

To return to the original factory setting for Auto Sensitivity, see the entry in this section on Reset Options. If sensitivity is in manual mode, the Reset Options command will switch back to Auto and re- set the factory setting at the same time.

Tip:

For quicker sensitivity adjustments, try leaving the Sensitivity Control Bar on the screen as the chart scrolls. You can see the changes on the screen as you press the up or down arrows. This is handy when there's a lot of clutter in the water, and you are matching the sensitivity to rapidly changing water conditions.

Set Keel Offset

This unit measures water depth from the face of the transducer. Since the transducer is installed below the water surface, the distance dis- played by the digital depth, chart depth scale, chart cursor or fish sym- bols is not the exact water depth. If the transducer is 1 foot below the surface, and the screen shows the water depth as 30 feet, then the ac- tual depth is 31 feet.

On sailboats or other large vessels with deep drafts, the distance be- tween the transducer installation and the keel or lower engine unit can be several feet. In those cases, an inexact depth reading could result in grounding or striking underwater structure. The Keel Offset feature eliminates the need for the navigator to mentally calculate how much water is under his keel.

Keel Offset lets you calibrate the digital depth: chart depth scale, chart cursor depth and fish symbol depth displayed on the screen. To calibrate the depth indicators, first measure the distance from the face of the trans- ducer to the lowest part of the boat. In this example, we will use 3.5 feet. We enter this as a negative 3.5 feet, which makes the depth indicators per- form as if the transducer's lower in the water than it really is.

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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 Back-up memory X136DFX126DF SonarHow Sonar Works Arrow Keys How to use this manual typographical conventionsMenu Commands KeyboardInstructions = Menu Sequences Page Transducer Installation PreparationsRecommended Tools and supplies Selecting a Transducer LocationGood location Poor location Location Poor angle How low should you go?Transom Transducer centerline Hull bottom Shoot-thru-hull vs. Transom Mounting Assembling the bracketDot Ratchet Aligning the transducer on the transomRatchets Metal Nut washer Rubber Assembling the transducerBolt Lock washer Nut Flat washer WashersAttaching transducer to transom Drilling mounting holesTransom 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 Transducer location High speed Trolling speed Shoot-thru-hull InstallationSpread epoxy here Sand this surface Speed/Temperature Sensors Temperature sensor Sensor ChartSonar unit rear view Two-temperature sensor installation Temperature sensor SP-X speed sensorGood location Optional Speed Sensor InstallationTransom Bottom of hull 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 146.5 In-Dash InstallationPortable Installation 113.5Cell battery Face CoverPage Basic Sonar Operation KeyboardMenus Power/lights on and offMain Menu 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 levelDepth Alarms AlarmsTo adjust and turn on the shallow alarm To adjust and turn on the deep alarm Zone AlarmTo adjust and turn on the zone alarm Brightness Fish AlarmTo turn the fish alarm on Calibrate SpeedChart Speed Depth Range Automatic ContrastDepth Cursor Cursor line Depth boxDepth Range Upper and Lower Limits To switch to Manual Depth RangeDepth Range Manual To turn Auto Depth Range on againTo change the upper and lower limits Fish arches Area zoomedFasTrack Fish I.D. Fish Symbols & DepthsTo turn off upper and lower limits Page To turn the Fish I.D. feature on FishTrackFishReveal Symbols with FishTrack depthsTo turn on FishTrack 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 onlyTo adjust the Grayline level To change the frequency setting to 200 kHzGrayline Hard Fish near Grayline Hard Bottom Muddy bottom Muddy bottom bottomNoise Rejection HyperScrollOverlay Data To turn off displayed data To change displayed data font sizePing Speed & HyperScroll To change Ping SpeedPop-up Help To turn off HyperScrollReset Water Distance Reset OptionsScreen Contrast and Brightness Sensitivity & Auto Sensitivity To adjust sensitivity in auto mode Automatic SensitivitySet Keel Offset To adjust sensitivity in manual modeTo turn Auto Sensitivity back on Set Language Software Version InformationTo change the chart mode color scheme Sonar Chart ModeSonar Chart Display Options 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 FlashGrafTo adjust the Surface Clarity level Stop ChartSurface Clarity Transducer Type X126DF and X136DF only Upper and Lower Limits Units of MeasureZoom & Zoom Bar 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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