CAUTION: Clamp the transducer cable to transom near the transducer. This will help prevent the transducer from entering the boat if it is knocked off at high speed. Good location
Poor location Good location
Good location Poor angle Good and poor transducer locations.
How low should you go? For most situations, you should install your Skimmer transducer so that its centerline is level with the bottom of the boat hull. This will usually give you the best combination of smooth water flow and protection from bangs and bumps.
Transom Transducer centerline
Hull bottom Align transducer centerline with hull bottom.
However, there are times when you may need to adjust the transducer slightly higher or lower. (The slots in the mounting brackets allow you to loosen the screws and slide the transducer up or down.) If you fre9
quently lose bottom signal lock while running at high speed, the transducer may be coming out of the water as you cross waves or wakes. Move the transducer a little lower to help prevent this. If you cruise or fish around lots of structure and cover, your transducer may be frequently kicking up from object strikes. If you wish, you may move the transducer a little higher for more protection. There are two extremes you should avoid. Never let the edge of the mounting bracket extend below the bottom of the hull. Never let the bottom the face of the transducer rise above the bottom of the hull. Shoot-thru-hull vs. Transom Mounting Typically, shoot-thru-hull installations give excellent high speed operation and good to excellent depth capability. There is no possibility of damage from floating objects. It can't be knocked off when docking or loading on the trailer. However, the shoot-thru-hull installation does have its drawbacks. First, some loss of sensitivity does occur, even on the best hulls. This varies from hull to hull, even from different installations on the same hull. This is caused by differences in hull lay-up and construction. Second, the transducer angle cannot be adjusted for the best fish arches. This can be a problem on some hulls that sit with the bow high when at rest or at slow trolling speeds. Follow the procedure listed in the shoot-thru-hull installation section at the end of this lesson to determine if you can satisfactorily shoot through the hull. TRANSOM TRANSDUCER ASSEMBLY AND MOUNTING The best way to install these transducers is to loosely assemble all of the parts first, place the transducer's bracket against the transom and see if you can move the transducer so that it's parallel with the ground. The following instructions sometimes vary depending on the mounting bracket that came with your transducer. Single-frequency Skimmers come with a one-piece stainless steel bracket, while dual-frequency Skimmers come with a two-piece plastic mounting bracket. Use the set of instructions that fits your model. 1. Assembling the bracket. A. One-piece bracket: Press the two small plastic ratchets into the sides of the metal bracket as shown in the following illustration. Notice there are letters molded into each ratchet. Place each ratchet into the bracket with the letter "A" aligned with the dot stamped into the metal bracket. This position sets the transducer's coarse angle adjustment for a 14 transom. Most outboard and stern-drive transoms have a 14 angle. 10

Spread epoxy here

Sand this surface
Epoxy transducer to hull.
2. Follow the instructions on the epoxy package and mix it thoroughly. Do not mix it too fast, because it will cause bubbles to form in the epoxy. Apply a small amount on the face of the transducer as shown above, then spread a small amount onto the sanded area on the hull. 19
Place the transducer into the epoxy, twisting and turning it to force any air bubbles out from under the transducer face. The face of the transducer should be parallel with the hull, with a minimum amount of epoxy between the hull and transducer. After the epoxy dries, route the cable to the sonar unit.
Speed/Temperature Sensors
This unit accepts up to three temperature sensors which can monitor surface water, live well, bait well and virtually any other temperature. If you want to use more than one temperature sensor or a speed sensor, you must purchase the optional MY-4X adapter cable. You also need to be careful when purchasing the temperature sensors, because each temperature sensor has its own fixed electronic "address." The sensors are labeled "Water," "T-2" (or Temp-2) and "T-3" (or Temp-3). The first "Water" temperature sensor is built into the transducer. This is the sensor that measures surface water temperature. If you want two (or more) temperature readings from other locations, you'll need to use the proper sensors. For example, you can't use two additional T-3 sensors. The sensors that fit this unit are: TS-1X This sensor will over-ride the temperature sensor built into the transducer and over-ride the temperature sensor in a ST-TGY combination sensor. (This sensor is not recommended.) One sensor for "T-2" temperature display. One sensor for "T-3" temperature display. One speed sensor for "Speed" display. This combination sensor will provide speed and temperature readings, but the temperature reading will be displayed as the "Water" temperature because it will over-ride the temperature sensor in the transducer. (This sensor is not recommended.)

TS-2X TS-3X SP-X ST-TGY

See the wiring diagram on the following page for temperature and speed sensor combinations.

Sensor Chart

Sonar unit rear view
Two-temperature sensor installation
Temperature sensor built into transducer

MY-4X Cable

TS-2X temperature sensor
Three-temperature sensor installation TS-3X temperature sensor
Three-temperature sensor installation with speed

Power Connections

The unit works from a 12-volt battery system. For the best results, attach the power cable directly to the battery. You can attach the power cable to an accessory or power buss, however you may have problems with electrical interference. Therefore, it's safer to go ahead and attach the power cable directly to the battery. CAUTION: When using the unit in a saltwater environment, we strongly recommend that you shut off the power supply to the power cable when the unit is not in use. When the unit is turned off but still connected to a power supply, electrolysis can occur in the power cable plug. This may result in corrosion of the plug body along with the electrical contacts in the cable and the unit's power socket. In saltwater environments we recommend you connect the power cable to the auxiliary power switch included in most boat designs. If that results in electrical interference, or if such a switch is not available, we recommend connecting direct to the battery and installing an inline switch. This will let you shut off power to the power cable when the unit is not in use. When you are not using the unit, you should always shut off power to the power cable, especially when the power cable is disconnected from the unit. If possible, keep the power cable away from other boat wiring, especially the engine's wires. This will provide the best isolation from electrical noise. If the cable is not long enough, splice #18 gauge wire onto it. The power cable has two wires, red and black. Red is the positive 23
lead, black is negative or ground. Make sure to attach the in-line fuse holder to the red lead as close to the power source as possible. For example, if you have to extend the power cable to the battery or power buss, attach one end of the fuse holder directly to the battery or power buss. This will protect both the unit and the power cable in the event of a short. It uses a 3-amp fuse.
Optional power off switch for saltwater installations To unit
Black wire 12 volt battery Power connections for the sonar unit.

Red wire with 3 amp fuse

CAUTION: Do not use this product without a 3-amp fuse wired into the power cable! Failure to use a 3-amp fuse will void your warranty. This unit has reverse polarity protection. No damage will occur if the power wires are reversed. However, the unit will not work until the wires are attached correctly. An optional 8-foot, CA-4 external power cable with a cigarette lighter adapter is available from Lowrance.

Power socket

Sonar socket

Transducer Power wires

Sonar unit cable connections.
Mounting the Unit: Bracket, In-Dash or Portable
You can install the sonar unit on the top of a dash with the supplied gimbal bracket. It can also be installed in the dash or mounted on a portable power supply. If you use the supplied bracket, you may be interested in the optional R-A-M bracket mounting system. This converts the unit's gimbal bracket to a swivel mount, which can be used on the dash or overhead mounting positions. Installation instructions are supplied with the R-A-M mounting kits.
Optional R-A-M mounting system.
Bracket Installation Mount the unit in any convenient location, provided there is clearance behind the unit when it's tilted for the best viewing angle. You should also make sure there is enough room behind the unit to attach the power and transducer cables. (A drawing on the next page shows the dimensions of a gimbal-mounted sonar unit.) Holes in the bracket's base allow wood screw or through-bolt mounting. You may need to place a piece of plywood on the back side of thin fiberglass panels to reinforce the panel and secure the mounting hardware.
Install the gimbal bracket. Orient the bracket so the arms slope toward the front of your unit.
Drill a 1-inch (25.4 mm) hole in the dash for the power and transducer cables. The best location for this hole is immediately under the gimbal 26
bracket location. This way, the bracket can be installed so that it covers the hole, holds the cables in position and results in a neat installation. Some customers, however, prefer to mount the bracket to the side of the cable hole it's a matter of personal preference.
72.9 [2.87] 173.9 [6.85] 23.4 [0.92]

137.9 [5.43]

157.9 [6.22]

Millimeter [Inch]

56.9 [2.24]
Front view (left) and side view (right) showing dimensions of the sonar unit when mounted on gimbal bracket.
After drilling the hole, pass the transducer connector up through the hole from under the dash. Pass the power cable's bare-wire end down though the hole from the top. If you wish, you can fill in the hole around the cables with a good marine caulking compound. (Some marine dealers stock cable hole covers to conceal the opening.) No matter what type of installation you prefer, be sure to leave enough slack in the cables to allow tilting or swiveling the unit. If you choose to fill in the hole, be sure to position the cables against the rear edge of the hole as you apply the fill material. Before positioning the bracket, be sure to hold the cables against the rear edge of the hole. Then, slide the bracket over the hole and butt the rear of the bracket base firmly against the cables, thus pinning them in place against the side of the hole. Finally, fasten the bracket to the dash. Attach the unit to the gimbal bracket using the supplied gimbal knobs and washers.

Sonar Page Menu. Most of these functions are discussed in Sec. 4. Sonar Menu Commands
The Sonar Menu contains commands for the major sonar features and options. Most of them are only described in detail in Sec. 4, but Sensitivity and Auto Sensitivity are important basic functions that are discussed both here and in Sec. 4. The other Sonar Menu commands include: Grayline command: separates fish and structure near the bottom from the actual bottom, and defines bottom composition/hardness. Depth Range command: manually sets the depth range shown on the sonar chart. 34
Auto Depth Range command: automatically sets the depth range shown on the sonar chart to always keep the bottom in view. Upper and Lower Limits command: sets the upper and lower depth limits of the sonar chart. Lets you zoom in on a specific portion of the water column. Stop Chart command: stops the sonar chart from scrolling. Used when you want to "freeze" the image for closer study. Chart Speed command: sets the scrolling speed of the sonar chart. Depth Cursor command: displays a cursor line on the sonar chart which allows you to accurately measure the depth of a sonar target. Overlay Data command: chooses what types of information (such as water temperature) to show overlaid on the sonar chart screen. Sonar Features command: launches the Sonar Features menu which controls many functions and options, including frequency selection, screen color mode, auto depth and sensitivity, surface clarity, noise rejection, Fish I.D. symbols, the zoom bar and zone bar. Ping Speed command: sets the rate at which sonar pings are made.
The Pages Menu controls the five major display options. They are the Full Sonar Chart, Split Zoom Sonar Chart, Split Frequency Sonar Chart, Digital Data and the flasher-style FlashGraf. You access the Pages Menu by pressing the PAGES key. You select a display option by using or to highlight the option and then pressing ENT. (You can clear the Pages Menu by pressing EXIT.)
Pages Menu showing some Sonar display options (at left, dual-frequency menu; at right, single-frequency menu).
The Full Sonar Chart is the main display option. This is a "crosssection" view of the water column beneath the boat. The chart moves across the screen, displaying sonar signal echoes that represent fish, structure and the bottom.
Surface signal Digital data overlay (depth & temperature) Depth scale In FasTrack, fish arches show as horizontal bars. Surface clutter

Fish arches

Zoom bar Structure
Bottom signal Sonar Page, showing full sonar chart mode.

FasTrack bar graph

Sonar chart display options (from left) split zoom (all models) and split frequency (X126DF and X136DF only).

You may see fish symbols on the screen when actually, there are no fish. The reverse is also true. The illustrations on the next page show how Fish I.D. can actually miss fish that are present. Does that mean Fish I.D. is broken? No the feature is simply interpreting sonar returns in a specific way to help take some of the work out of reading the screen. Remember: Fish I.D. is one of the many tools we provide so you can analyze your sonar returns for maximum fish finding information. This and other features can help you successfully "see" beneath the boat under varied water and fishing conditions. So, practice with the unit in both the Fish I.D. mode and without to become more familiar with the feature. The default for Fish I.D. is off.
Sonar Features menu with Fish I.D. Symbols selected (at left, dualfrequency menu; at right, single-frequency menu). When the check box to the left is checked, the feature is on.

Fig. 1 A

Fig. 1 B
Many fish arches visible Fig. 2 A Fish arches above structure
Fewer fish symbols visible Fig. 2 B No fish shown
FasTrack graph confirms fish above structure At left, figures 1A and 2A show Sonar Page in normal chart mode. At right, figures 1B and 2B show the same underwater scene with Fish I.D. turned on. Note how arches are replaced with symbols.
To turn the Fish I.D. feature on: 1. From the Sonar Page, press MENU| to SONAR FEATURES|ENT. 2. Press to FISH SYMBOLS|ENT|EXIT|EXIT. To turn off Fish I.D., repeat the instructions in step 2.

FishTrack

The FishTrack feature shows the depth of a fish symbol when it appears on the display. This lets you accurately gauge the depth of targets. This feature is available only when the Fish I.D. feature is on. The default setting for FishTrack is off.
To turn on FishTrack: (Note: These instructions will turn on FishTrack and Fish I.D. at the same time.) 1. From the Sonar Page, press MENU| to SONAR FEATURES|ENT. 2. Press |then press to FISH DEPTHS|ENT|EXIT|EXIT. To turn off FishTrack, repeat the instructions in step 2. Turning off FishTrack in this manner will not turn off Fish I.D. symbols.

Overlay Data

To change the digital data shown on top of the sonar page: 1. Press MENU| to OVERLAY DATA|ENT. 2. Press or to select Data Type|ENT.
Overlay Data command on the Sonar Menu, at left. Overlay Data Shown selection menu, right. In this example, we scrolled down the data list to highlight "Water Speed."
When selected, the data type shifts to the top of the data list and a check mark appears beside the data type. (If you wish, you may now use or to select other Data Types for display.)
Data list showing "Water Speed" selected to display on Sonar Page.
3. To return to the previous page, press EXIT|EXIT. 59
To turn off displayed data: 1. Press MENU| to OVERLAY DATA|ENT.
2. Press or to select Data Type|ENT. The selected data type disappears from the top of the list and reverts to its previous, unchecked position. (If you wish, you may now use or to select other Data Types to turn off.) 3. To return to the previous page, press EXIT|EXIT.
To change displayed data font size: 1. Press MENU| to OVERLAY DATA|ENT.
2. Press or to select Data Type|press or to Data Size|EXIT. The selected data type will be displayed in the new size. (To change the font size for another Data Type, press ENT and repeat these steps, beginning with step two above.) 3. To return to the previous page, press EXIT.
If you wish, you can change the displayed data font size when you select a data type: 1. Press MENU| to OVERLAY DATA|ENT. 2. Press or to select Data Type|press or to select Data Size|ENT. The data will be shown in the new font size. To return to the previous page, press EXIT|EXIT.
Sonar chart with Overlay Data turned on. This example shows Depth, Water Temperature and the Water Speed of the boat.
Ping Speed & HyperScroll
Ping Speed controls the rate at which the transmitter and transducer broadcast sonar sound waves pings into the water. The unit has a default ping speed of 50 percent. At normal boating speeds, this automatically provides enough return echoes to refresh the screen and scroll the chart at maximum chart speed. However, when you are running at high speeds, or just want the fastest possible screen update, you may want to use the HyperScroll feature. When you change the Ping Speed to any setting greater than 50 percent, the unit automatically enters HyperScroll mode. These faster ping rates allow you to maintain a high-detail picture on the screen, and the screen refresh rate and chart scroll speed can keep pace with the boat as it moves quickly over the bottom terrain. When using HyperScroll, you may also need to manually decrease the sensitivity for optimum performance. Depending on water depth and other conditions, HyperScroll may cause a second bottom echo to return to the transducer during the next ping cycle, or sounding. This can result in a large amount of clutter appearing on the screen. If this occurs, just decrease the sensitivity to a level that eliminates the clutter. When you turn HyperScroll off, you can return to your original sensitivity level.

At left, Main Menu with Reset Options command selected. At right, the Reset Options dialog box, with "Yes" selected.

Reset Water Distance

The sonar chart's Digital Data display option includes a window that shows distance traveled, called Water Distance ("W Distance"). This information is calculated from an optional water speed sensor. The Water Distance window can be reset to zero using the Reset Water Distance command. Press MENU|MENU| to RESET WATER DISTANCE|ENT. The menus are cleared and the water distance is reset to 0.00.
Screen Contrast and Brightness
To access the Screen menu, press MENU|MENU|ENT.

Once in the Screen menu:

To adjust the display's contrast: The CONTRAST slider bar is already selected. Press or to move the bar. The left end of the scale is minimum contrast; the right end is maximum contrast. 63
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 MODE|ENT|press or to select mode|EXIT.

Display Mode menu.

Sensitivity & Auto Sensitivity
The sensitivity controls the ability of the unit to pick up echoes. Sensitivity 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. 64
Automatic Sensitivity The default sensitivity mode is automatic. The unit bases the sensitivity level on water depth and conditions. When the unit is in the automatic mode, sensitivity is automatically adjusted to keep a solid bottom signal displayed, plus a little more power. This gives it the capability to show fish and other detail. However, situations occur when it becomes necessary to increase or decrease the sensitivity. This typically happens when you wish to see more detail, so an increase in sensitivity is indicated. Or, wave action and boat wakes can create enough tiny air bubbles to clutter much of the water column. In that case, a decrease in sensitivity is indicated to reduce some of the clutter. The control bar used to adjust sensitivity up or down is the same whether the unit is in the automatic or manual mode. In automatic you can adjust sensitivity up to 100 percent but the unit will limit your minimum setting. In auto, the unit will continue to make small adjustments, allowing for the setting you selected. In manual mode, you have complete control over sensitivity, with the ability to set it anywhere from zero to 100 percent. Once you select a level in manual, the unit will continue to use that exact sensitivity setting until you change it or revert to auto mode. To adjust sensitivity in auto mode: 1. Press MENU|ENT. 2. The Sensitivity Control Bar appears. Press to decrease sensitivity; press to increase sensitivity. When it's set at the desired level, press EXIT. (When you reach the maximum or minimum limit, a tone sounds.)

1. Press MENU|MENU| to SET KEEL OFFSET|ENT. 2. The Keel Offset dialog box appears. Press to change the plus (+) sign to a minus () sign. 3. Press to the first number, then press to change the number to 3 4. Press to the second number, then press to change the number to 5, then press EXIT. The depth indicators now accurately show the depth of water beneath the keel. NOTE: If knowing the exact depth of water beneath the keel is less important, you can calibrate the depth indicators so that they show the actual water depth from surface to bottom. To do this, first measure the distance from the face of the transducer up to the surface (the water line on the boat). In this example, we will use 1.5 feet. This will be entered as a positive 1.5 feet, which makes the depth indicators perform as if the transducer's higher in the water than it really is. 1. Press MENU|MENU| to SET KEEL OFFSET|ENT. 2. The Keel Offset dialog box appears with a plus (+) sign at the front of the box. 3. Press to the first number, then press to change the number to 1. 4. Press to the second number, them press to change the number to 5, then press EXIT. The depth indicators now accurately show the water depth from surface to bottom.

Set Language

This unit's menus are available in 10 languages: English, French, German, Spanish, Italian, Danish, Swedish, Russian, Dutch and Finnish. To select a different language: 1. Press MENU|MENU| to SET LANGUAGE|ENT. 2. Use or to select a different language and press ENT. All menus now appear in the language you selected.
Software Version Information
From time to time, Lowrance updates the operating system software in some of its products. These software upgrades are usually offered to customers as free downloads from our web site, www.lowrance.com. These upgrades make the unit perform better or introduce a new feature or function. You can find out what software version is running in your sonar unit by using the Software Information command. 67
At left, Main Menu with Software Information command selected. At right, the Software Information screen.
1. Press MENU|MENU| to SOFTWARE INFO|ENT. 2. Read the information displayed on the screen. 3. To return to the last page displayed, press EXIT|EXIT.

Sonar Chart Mode

The default color scheme for the sonar chart is grayscale, but we offer other variations to suit your viewing preferences. You can select the chart to be displayed in reverse grayscale, bottom black or FishReveal mode. (For more information on FishReveal, see the entry on that topic elsewhere in this section.) To change the chart mode color scheme: 1. From the Sonar Page, press MENU| to SONAR FEATURES|ENT. 2. Press to SONAR CHART MODE|ENT. 3. Press or to Mode Name|ENT. 4. Press EXIT|EXIT to return to the Sonar Page.

Sonar Chart Display Options
The Pages Menu offers five chart display options for dual-frequency models and four options for single-frequency models. To access them, press PAGES| to Option Name|EXIT.
Pages Menu showing sonar chart display options (at left, dual-frequency menu; at right, single-frequency menu).
Full Sonar Chart This is the default mode used when the unit is turned on for the first time or when it's reset to the factory defaults. The bottom signal scrolls across the screen from right to left. Depth scales on the right side of the screen aid in determining the depth of targets. The line at the top of the screen represents the surface. The bottom depth and surface temperature (if equipped with a temperature sensor or a transducer with a temp sensor built in) show at the top left corner of the screen. The FasTrack display shows just to the right of the scale. This changes all echoes into short horizontal bars, replicating a flasher sonar. The zoom bar on the far right shows the area that's zoomed when the zoom is in use. (See the Zoom section for more information.)
Full Sonar Chart. The Overlay Data (depth and water temperature) are both set to the small text size.
Split Zoom Sonar Chart a split chart shows the underwater world from the surface to the bottom on the right side of the screen. The left side shows an enlarged version of the right side. The zoom range shows at the bottom left corner of the screen.
Split Zoom Sonar Chart. Image at left shows the left window zoomed to 2X. The right image shows the left window zoomed to 4X. The depth overlay data is set to the default large text size; the water temperature is set to the small text size.
Split Frequency Sonar Chart (X126DF and X136DF only) This page shows sonar data from the 50 kHz transducer element on the left side of the screen and data from the 200 kHz transducer on the right side. All other functions and features are the same as the Full Chart page.
Split Frequency Sonar Chart page, with 50 kHz view at left and 200 kHz view at right.
You can adjust the sensitivity in each window. 70
To adjust sensitivity in auto mode: 1. Press MENU|ENT. 2. The unit asks which you wish to adjust. Press or to select the one you want | ENT. 3. The Sensitivity Control Bar appears. Press to decrease sensitivity; press to increase sensitivity. When it's set at the desired level, press EXIT. (When you reach the maximum or minimum limit, a tone sounds.)
The Split Frequency Sonar Chart page allows you to adjust sensitivity separately for each window.

To eliminate or minimize the effects of electrical noise, first try to determine the cause. With the boat at rest in the water, the first thing you should do is turn all electrical equipment on the boat off. Make sure the engine is also off. Turn your sonar on, then turn off Noise Reject [also known as the ASP feature (Advanced Signal Processing)]. Sensitivity should be set at 90-95 percent. There should be a steady bottom signal on the display. Now turn on each piece of electrical equipment on the boat and view the effect on the sonar's display. For example, turn on the bilge pump and view the sonar display for noise. If no noise is present, turn the pump off, then turn on the VHF radio and transmit. Keep doing this until all electrical equipment has been turned on, their effect on the sonar display noted, then turned off. If you find noise interference from an electrical instrument, trolling motor, pump, or radio, try to isolate the problem. You can usually reroute the sonar unit's power cable and transducer cable away from the wiring that is causing the interference. VHF radio antenna cables radiate noise when transmitting, so be sure to keep the sonar's wires away from it. You may need to route the sonar unit's power cable directly to the battery to isolate it from other wiring on the boat. If no noise displays on the sonar unit from electrical equipment, then make sure everything except the sonar unit is turned off, then start the engine. Increase the RPM with the gearshift in neutral. If noise appears on the display, the problem could be one of three things; spark plugs, alternator, or tachometer wiring. Try using resistor spark plugs, alternator filters, or routing the sonar unit's power cable away from engine wiring. Again, routing the power cable directly to the battery helps eliminate noise problems. Make sure to use the in-line fuse supplied with the unit when wiring the power cable to the battery. When no noise appears on the sonar unit after all of the above tests, then the noise source is probably cavitation. Many novices or persons with limited experience make hasty sonar installations which function perfectly in shallow water, or when the boat is at rest. In nearly all cases, the cause of the malfunction will be the location and/or angle of the transducer. The face of the transducer must be placed in a location that has a smooth flow of water at all boat speeds. Read your transducer owner's manual or the Installation instructions (Sec. 2) in this manual for the best mounting position.
Accessories, 1, 25, 26 Sec. 2, Installation & Accessories, 7 Alarms, 33, 44, 45, 46 Depth Alarms, 44 Fish Alarm, 44, 46 Zone Alarm, 44, 45, 46 Antenna, 81 ASP (Advanced Signal Processing), 18, 43 FishReveal, 54 FishTrack, 53 Frequency, 2, 31, 35, 56 Change Frequency, 56

Grayline, 34, 57

HyperScroll, 59, 61
Backlights / Lighting, 2, 31 Batteries, 7, 23, 24, 28, 29, 79, 80, 81 Brightness, 33, 46, 48, 63, 64

Icons, 4 Installation, 7, 19, 22, 25, 26, 28, 29, 81 Sec. 2, Installation & Accessories, 7 Introduction Sec. 1, Introduction, 1 Specifications, 2 Typographical Conventions, 4
Calibrate Speed, 46 Chart Speed, 35, 47 Contrast, 2, 33, 46, 48, 63, 64 Cursor, 4, 35, 38, 48
Keel Offset, 33, 66, 67 Keypad Description, 4, 31
Depth Cursor, 4, 35, 38, 48 Depth Range, 3, 18, 34, 35, 45, 48, 49, 50, 51, 54, 70, 77, 80 Automatic, 48 Manual, 49 Upper and Lower Limits, 35, 49, 50, 76 Display Options, 31, 35, 36, 37, 68, 69, 70, 71, 72, 73

Languages, 2, 34, 67

Main Menu, 31, 32, 33, 44, 62, 63, 68, 76
FasTrack, 51 Fish Depths, 53 Fish I.D., 33, 35, 41, 44, 46, 51 Fish Symbols, 5, 33, 35, 41, 44, 46, 51, 53 Interpreting, 41

Noise Rejection, 43, 59

Overlay Data, 35, 59, 60, 69
Pages, 32, 35, 68, 69 Ping Speed, 35, 59, 61, 62 HyperScroll, 59, 61 Pop-up Help, 62 Power, 1, 2, 7, 23, 24, 25, 26, 27, 28, 29, 31, 32, 38, 65, 79, 80, 81 Product Specifications, 2
Sonar Menu, 31, 32, 34, 40, 43, 59, 61, 65, 74 Sonar Operation Quick Reference, 38 Speed Sensors, 3, 20, 22, 33, 46, 63, 71 Stop Chart, 35, 74 Surface Clarity, 74, 75
Temperature Sensors, 20, 69 Transducer, 1, 2, 3, 4, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 26, 27, 28, 34, 38, 43, 49, 56, 61, 66, 67, 69, 70, 73, 75, 76, 79, 80, 81 Mounting, 10 Transducer Type, 34, 75, 76
Range, 3, 18, 34, 35, 45, 48, 49, 50, 51, 54, 70, 77, 80 Automatic, 48 Manual, 49 Upper and Lower Limits, 49, 76 Reset Options, 34, 41, 63, 66 Reset Water Distance, 34, 63 Route, 7, 9, 14, 15, 16, 20, 23, 79, 81
Units of Measure, 33, 76 Upper and Lower Limits, 35, 50, 76 Utilities, 31
Sensitivity, 34, 39, 40, 41, 54, 55, 62, 64, 65, 66, 71, 81 Simulator, 34, 73 Software Version Information, 67 Sonar Chart Color Mode, 55, 68 FishReveal, 54 Sonar Chart Display Options, 31, 35, 36, 37, 68, 69, 70, 71, 72, 73
Zooming, 3, 31, 32, 35, 38, 69, 70, 76, 77, 80 Zoom Bar, 76 Zoom Pan, 77
Section 6: Supplemental Material
LOWRANCE ELECTRONICS FULL ONE-YEAR WARRANTY
"We," "our," or "us" refers to LOWRANCE ELECTRONICS, INC., the manufacturer of this product. "You" or "your" refers to the first person who purchases this product as a consumer item for personal, family or household use. We warrant this product against defects or malfunctions in materials and workmanship, and against failure to conform to this product's written specifications, all for one (1) year from the date of original purchase by you. WE MAKE NO OTHER EXPRESS WARRANTY OR REPRESENTATION OF ANY KIND WHATSOEVER CONCERNING THIS PRODUCT. Your remedies under this warranty will be available so long as you can show in a reasonable manner that any defect or malfunction in materials or workmanship, or any non-conformity with the product's written specifications, occurred within one year from the date of your original purchase, which must be substantiated by a dated sales receipt or sales slip. Any such defect, malfunction, or non-conformity which occurs within one year from your original purchase date will either be repaired without charge or be replaced with a new product identical or reasonably equivalent to this product, at our option, within a reasonable time after our receipt of the product. If such defect, malfunction, or non-conformity remains after a reasonable number of attempts to repair by us, you may elect to obtain without charge a replacement of the product or a refund for the product. THIS REPAIR, OR REPLACEMENT OR REFUND (AS JUST DESCRIBED) IS THE EXCLUSIVE REMEDY AVAILABLE TO YOU AGAINST US FOR ANY DEFECT, MALFUNCTION, OR NON-CONFORMITY CONCERNING THE PRODUCT OR FOR ANY LOSS OR DAMAGE RESULTING FROM ANY OTHER CAUSE WHATSOEVER. WE WILL NOT UNDER ANY CIRCUMSTANCES BE LIABLE TO ANYONE FOR ANY SPECIAL, CONSEQUENTIAL, INCIDENTAL, OR OTHER INDIRECT DAMAGE OF ANY KIND. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusions may not apply to you. This warranty does NOT apply in the following circumstances: (1) when the product has been serviced or repaired by anyone other than us; (2) when the product has been connected, installed, combined, altered, adjusted, or handled in a manner other than according to the instructions furnished with the product; (3) when any serial number has been effaced, altered, or removed; or (4) when any defect, problem, loss, or damage has resulted from any accident, misuse, negligence, or carelessness, or from any failure to provide reasonable and necessary maintenance in accordance with the instructions of the owner's manual for the product. We reserve the right to make changes or improvements in our products from time to time without incurring the obligation to install such improvements or changes on equipment or items previously manufactured. This warranty gives you specific legal rights and you may also have other rights which may vary from state to state. REMINDER: You must retain the sales slip or sales receipt proving the date of your original purchase in case warranty service is ever required.

LOWRANCE ELECTRONICS 12000 E. SKELLY DRIVE, TULSA, OK 74128 (800) 324-1356

How to Obtain Service

in the USA:
We back your investment in quality products with quick, expert service and genuine Lowrance parts. If you're in the United States and you have technical, return or repair questions, please contact the Factory Customer Service Department. Before any product can be returned, you must call customer service to determine if a return is necessary. Many times, customer service can resolve your problem over the phone without sending your product to the factory. To call us, use the following toll-free number:

800-324-1356

8 a.m. to 5 p.m. Central Standard Time, M-F
Lowrance Electronics may find it necessary to change or end our shipping policies, regulations, and special offers at any time. We reserve the right to do so without notice.

in Canada:

If you're in Canada and you have technical, return or repair questions, please contact the Factory Customer Service Department. Before any product can be returned, you must call customer service to determine if a return is necessary. Many times, customer service can resolve your problem over the phone without sending your product to the factory. To call us, use the following toll-free number:

800-661-3983

905-629-1614 (not toll-free)
8 a.m. to 5 p.m. Eastern Standard Time, M-F
outside Canada and the USA:
If you have technical, return or repair questions, contact the dealer in the country where you purchased your unit. To locate a dealer near you, visit our web site, www.lowrance.com and look for the Dealer Locator.
Accessory Ordering Information for all countries
To order Lowrance accessories such as power cables or transducers, please contact: 1) Your local marine dealer or consumer electronics store. Most quality dealers that handle marine electronic equipment or other consumer electronics should be able to assist you with these items. To locate a Lowrance dealer near you, visit our web site, www.lowrance.com and look for the Dealer Locator. Or, you can consult your telephone directory for listings. 2) U.S. customers: LEI Extras Inc., PO Box 129, Catoosa, OK 74015-0129 Call 1-800-324-0045 or visit our web site www.lei-extras.com. 3) Canadian customers can write: Lowrance/Eagle Canada, 919 Matheson Blvd. E. Mississauga, Ontario L4W2R7 or fax 905-629-3118.

Shipping Information

If it becomes necessary to send a product for repair or replacement, you must first receive a return authorization number from Customer Service. Products shipped without a return authorization will not be accepted. When shipping, we recommend you do the following: 1. Please do not ship the knobs or mounting bracket with your unit. 2. If you are sending a check for repair, please place your check in an envelope and tape it to the unit. 3. For proper testing, include a brief note with the product describing the problem. Be sure to include your name, return shipping address and a daytime telephone number. An e-mail address is optional but useful. 4. Pack the unit in a suitable size box with packing material to prevent any damage during shipping. 5. Write the Return Authorization (RA) number on the outside of the box underneath your return address. 6. For your security, you may want to insure the package through your shipping courier. Lowrance does not assume responsibility for goods lost or damaged in transit.

Cable connections for Lowrance X135 and X136DF, March 25, 2004 Sockets with blue socket nuts, and cable plugs with blue locking collars are NMEA 2000 connection types. The network socket and optional NMEA 2000 buss adapter cable let the unit connect to a NMEA 2000 network. The NMEA 2000 Power cable gives you an option for powering the network. These units cannot transmit NMEA 0183 data and cannot connect to an external speaker. The NMEA 0183 data cable, the NMEA 2000 power cable (when unused) and the white speaker wire should be capped with wire nuts or electrical tape.
Sonar/GPS unit rear view Network socket

NETWORK

PWR/DATA
Sonar socket Blue Power/Data socket
NMEA 0183 Data cable. Four wires: blue, orange, yellow, shield (bare). Cable label says "RS-232 COMM." Not used in these units.
SP-BL speed sensor. This is packed with the X136DF and is optional for the X135.
Main Power Supply cable. Cable has no label, but is thickest of the three. Three wires: red (+), black ( ground), white. White is external speaker wire, not used in these units. NMEA 2000 Power cable. Three wires: red (+), black ( ground), shield (bare, ground). Cable label says "NMEA 2000 Power." Used when supplying power to a NMEA 2000 network. Optional NMEA 2000 buss adapter cable (network adapter cable)
Skimmer transducer with built-in temp sensor
To NMEA 2000 buss (network)
This figure corrects the drawings on pages 21 and 25 in the X135/X136DF manual, part 988-0151-171. It is a large-view supplement to the manual's Addendum I, part 988-0151-201.