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Tutorials > Fish Finder Tutorial >

Lowrance Fishfinder Tutorial




Sample LowranceNET Marine Network

Thanks to LowranceNET® networking and multiple choices in display devices, boaters can conveniently access vital boat systems information anywhere they wish to view it - Console, flybridge tower, bow, wherever!!

The Network Backbone Cable is the data communications “pipeline” that runs the length of the boat, and capped at each end with a 120 Ohm Terminator. Available in a variety of lengths up to 25', the backbone is interspersed with T-Connectors for linking to (and data sharing between) all sensors and display devices. The LowranceNET® system 12 Volt Power Source connects to the boat's 12-volt supply to power devices like the EP-10 Fuel Flow Sensor, LMF-400 Multi-Function Gauge, and LGC-2000 GPS Module. Compatible Sonar/GPS head units are powered separately with their own 12 Volt Power Source wiring. With such an innovative approach, expanding a boat's network to add sensors and/or displays is incredibly easy, convenient, and especially affordable with the LowranceNET® system.

NMEA 2000® is a registered trademark of the National Marine Electronics Association, Inc.
All Lowrance products are subject to NMEA 2000® certifications.

 

HDS High Definition System

The Most Revolutionary Finders
Since The Little Green Box
 

NMMA Award   Broadband Sounder

HDS Highest-Definition Broadband Fishfinding

Incredible and award-winning, exclusive Broadband Sounder digital technologies is now inside all HDS sonar models for the best Lowrance fishfinding ever! As the vital link between the transducer and your HDS display, Broadband is proven to find more fish with greater sensitivity, higher definition and more display clarity with superior target separation in all cover, in thermoclines and in all water conditions.

Less Noise, More Targets

With Lowrance Broadband digital signal processing software, noise goes way down and sensitivity goes way up. The result: Ultimate target discrimination with incredible high-definition separation of those distinctive Lowrance “fish arch” targets from structure and other fish!

Crystal-Clear Clarity

With advanced digital filtering, Broadband vastly improves at-a-glance display clarity, sharpens bottom images and paints a much cleaner picture of targets that others will miss or show poorly.

Greater Shallow-Water Coverage

To cover even more water, Broadband automatically adds 83 kHz operation to a Lowrance 200 kHz single-frequency transducer. At 83 kHz, you get full 120-degrees of wide-angle coverage with greatly enhanced definition of fish arch targets.

Incredible Deep-Water Performance

Broadband sounding is serious electronics when the hunt is on for fish in any deep water weather condition. Even at higher boat speeds, Broadband keeps a bottom lock at depth, with exceptional targeting of fish arches on the bottom, around wrecks and other seabed structure. And when used with a high-power transducer, strong bottom locks and water column detail reach down thousands of feet!

Expandability at No Extra Cost

For added value, HDS Broadband-equipped models can turn an HDS GPS Chartplotter (or GlobalMap® chartplotter with yellow ethernet connector) into a powerful combination fishfinder/chartplotter with complete sonar graph control when networked by Lowrance Ethernetworks.

Broadband Sounder screenshot 1 Broadband Sounder screenshot 2
 

Fantastic New High-Definition Insight Charting 1

Only Lowrance offers a stunning new world of cartography options that go to greater depths, and heights, in dimensional GPS navigation reference and guidance.

A Charting Revolution in Detail and Resolution

Insight delivers unprecedented inland mapping and coastal charting detail with lightning-fast screen display updates. Amazing contour shading lends life-like perspectives to bottom structure as well as topography. HDS Insight mapping choices include:
 
NEW Lake Insight™ U.S. inland mapping (for HDS-5) includes nearly 5,000 freshwater lake maps with life-like perspective of bottom structure and topography. Coverage includes the Great Lakes and more than 500 Fishing Hot Spots® Lakes – a $400 value!
NEW Nautic Insight™ (for HDS-5) offers a superior like-like view of coastal bottom structure with detailed coastal and offshore depth contours, plus nav aids, for the entire U.S. coastline.
Insight USA™ (for HDS-7, -8 and -10 models) combines inland and coastal coverage ares of Lake Insight™ and Nautic Insight™.

Insight map 1 Insight map 2 Insight map 3 Insight map 4
Lake Insight
Amistad Reservoir, TX
Lake Insight
Lake Michigan, MI
Nautic Insight
Puget Sound, WA
Nautic Insight
Nantucket Sound, MA

Expanded Basemap Marine DetailExtended Base Map1

HDS models with Enhanced U.S. Basemap offer the same geographic coverage area as Insight, with over 100,000 bodies of water and nearly 5,000 enhanced U.S. lakes with high detail lake shorelines and contours.

HDS Charting Options Go All-PlatinumNavionics Platinum+ with TurboView*

Your trusted favorites in Lowrance 2D mapping choices, like Fishing Hot Spots® PRO and LakeMaster® ProMaps are fully functional with HDS. Lowrance HDS expands your world of high-detail, high-definition 3D charting options with total compatibility for all 2009 (and earlier) Navionics® chartcards.

Platinum+ and Platinum* – Revealing 3D views of bottom structure, and incredibly detailed satellite imagery, for the ultimate enhancement to navigation and fishing.
HotMaps Platinum* – Fantastically detailed 3D lake surveys with fishing points of interest give marked advantages for the serious angler and tournament competitor.
Exclusive TurboView™ Advantage – This exclusive HDS built-in graphics engine delivers seamless zooms and 2D-3D chart displays, real-time 3D map nav data overlay, striking depth views in 2D and 3D, plus high-speed panning/zooming with detailed aerial views for all Platinum chartcards, and seamless zoom for Navionics® Gold.
Plays Favorites – HDS is also fully compatible with your library of Navionics® Gold, Silver, Classic and HotMaps chartcards.

HDS Redefines ‘Ease of Use’

Viewing and control have never been easier, nor more user-friendly. From basic operation to advanced professional functionality, HDS is thoughtfully designed to take you to the next level.

Stylish and Retrofit New menu structure new controls
Stylish and Retrofit-Ready -
True, HDS sports a more modern design to enhance any boat helm. Yet, by design, HDS makes it easy to upgrade your Lowrance electronics. HDS is compatible with late-model Lowrance transducers, plus yellow Ethernetworks and NMEA 2000® network connectors.
Enjoy Our New Menu Selection -
The new, more versatile HDS operating system presents a new way to view and select Lowrance features. This new menu format is both easy to grasp and thoughtfully functional, so you can fly through keypad functions control with the greatest of ease and speed.
A Touch Better -
For even easier and quicker control, HDS-8, -8m, -10 and -10m models feature a unique new FlyWheel™ scroll dial, as well as a bank of soft command keys for the fastest access to functions. So, you spend less time operating and more time fishing.
16-channel GPS SolarMAX Plus 2-year warranty
Better to Find Yourself -
With a built-in, high-sensitivity 16-channel GPS+WAAS antenna HDS is a superior solution for both bracket mount, and in-dash installs with the. convenience of front mounting. Plus, the internal GPS antenna also networks with NMEA 2000® systems for data sharing. No external antenna to place, no mess, no fuss. Just advanced GPS accuracy with strong satellite locks and less track plot wander.
For closed-cabin installs, there’s also a new and compact LGC-4000 external GPS+WAAS antenna module option for HDS with a true, real-time satellite signal update rate of five times per second for incredible location accuracy.
Screen Star -
In the easy-to-view category, HDS really shines. New SolarMAX™ PLUS color displays render fantastic detail in sunlight, with the best wide-angle viewing ever achieved. In fact, most now deliver nearly twice the brilliance with significantly-reduced power draw than before! Plus, super-white LED backlighting has zero-dim for eye-soothing night vision protection.
New 2-year Protection2 -
Lowrance also warrants that buying HDS will put your mind at ease. Each now come with a new, expanded 2-year limited warranty, protecting you from defects in materials and workmanship under normal use for a full 24 months after purchase. At no extra cost. Optional two-year extended warranty also available for purchase.2

HDS Newly-Defined Expandability Options

Lowrance HDS for 2009 presents a wider range of advanced accessory options to enhance your on-the-water experience, safety and enjoyment.

High-Definition Weather – Now Adds Inland Choice to Standard Offshore Coverage!3

New LWX-1 SIRIUS® Satellite Weather/Radio Smart Antenna

SIRIUS Marien WeatherLowrance presents two industry firsts with HDS chartplotters: SIRIUS® satellite high-res NOWRad® weather radar and radio services via an affordable and integrated smart antenna/module bundle, AND the first SIRIUS® Inland weather service … in addition to Coastal coverage … in two special SIRIUS® U.S. subscription packages!3

SIRIUS Satellite RadioThis compact weatherproof antenna is easy to mount, and provides weather display output to one or more HDS units via Ethernetworks. Plus a standard 3.5 mm stereo jack easily interfaces with onboard sound systems when you include radio with your SIRIUS® subscription for stereo-quality music and sports including NFL, NASCAR and college football broadcasts.

LWX-1 SIRIUS moduleSirius Inland Weather Service Package3:

  • Weather radar and lightning with full 2 km (1.2 mile) resolution
  • 80 nm (92 mile) lightning and radial weather display to 12 nm (13 mile) limit from coasts
  • Tabular weather feed with 5-day forecast display

Sirius Coastal/Offshore Weather Service Package3:

  • Cross-country weather radar and lightning with full 2 km (1.2 mile) resolution
  • Sea-surface temperature with higher resolution
  • Tropical storm and storm cell tracks
  • Four-day forecast of surface pressure, wave height, wave period and direction
  • Tabular weather feed with 5 day forecast
  • And more
satellite 1 satellite 2 satellite 3
SIRIUS NOWRad® animated coastal weather radar SIRIUS animated weather radar with wind direction SIRIUS radio combined with mapping and sonar display
satellite 4 satellite 5 satellite 6
SIRIUS sea conditions with wave data SIRIUS inland weather data with wind direction SIRIUS inland radar with weather watchbox

Advanced Networking

Ethernetworks NEP-1 Expansion Port

All HDS models come fully ethernet-ready to share high-bandwidth data among all multi-function HDS displays on the boat, including sonar graphs, SIRIUS® weather/radio and radar.

For a connected onboard system, the optional NEP-1 ethernet expansion port module links up to four HDS displays for high-speed data distribution. A robust, 100-megabit switch, it’s rugged and IPX-7 waterproof to resist corrosive marine environments.

NEP-1Multi-Station Network

 

Full NMEA 2000® Networking

HDS comes with full connectivity for the advanced NMEA standard in boat systems data sharing, backed by the most extensive and affordable selection of smart sensors for systems monitoring, including engine and fuel flow for optimum operating economies.

High-Definition Digital Radar

High-Definition Digital RadarYou have two advanced Lowrance high-definition radome choices for HDS, featuring advanced digital signal processing. Both deliver fast, detailed radar detection of even small and distant targets with superb accuracy in dark, fog and rain alike. Compact, dependable and high-performance, both network with Ethernetworks for onboard radar display sharing. Plus, you enjoy superb radar/chart overlay display when coupled with an optional, compatible NMEA 2000® heading sensor.

LMF Multi-Function Gauges

LMF-400Lowrance LMF models are NMEA 2000® certified digital gauges that are truly impressive to the extreme in precision and versatility for real-time monitoring of engine and boat systems on the NMEA 2000® network. LMF gauges display up to 16 different pages with 13 customizable screen types in graphic analog and alpha-numeric styles. Plus, they’re backed by the most extensive and affordable selection of smart sensors, including Fuel Flow for optimum fuel management economies. Available in a choice of two standard dash gauge sizes, both deliver superb viewing in direct sunlight.

EP Electronic Probe Sensors

Only Lowrance offers the most NMEA-2000® sensors for vital boat data monitoring, each with a built-in “smart module,” that’s fully programmable for greater accuracy in data delivery. That includes expanded engine and fuel flow readings for optimum operating economies.

High-Definition Digital Radar

Advanced Lowrance digital signal processing in high-definition radome choices for HDS. Fast, detailed radar detection of even small and distant targets with superb accuracy in dark, fog and rain alike. Compact, dependable and high-performance, both network with Ethernetworks for onboard radar display sharing.

Digital Radome Features

Radar/Chart Overlay.*
Interfaces charts and radar detail in a single, detail-rich display when coupled with an optional, compatible NMEA 2000® heading sensor.
Clearest Viewing.
Automatic Tune, Gain and Sea Clutter adjustment.
Smart STC.
Digital Sensitivity Time Control curves reject clutter with setting of return strength/distance thresholds.
Color Recognition.
Color palette choices for improved target distinction based on viewing conditions.

LRA-1800 Radome LRA-1800 Radome
• 2 kW, 18”/46 cm scanner w/2 kW processor
• 5.2º horizontal beamwidth, 25º vertical
beamwidth
• Up to 24 nm range
LRA-2000 Radome NEW LRA-2400 Radome
• 4 kW, 24”/61 cm scanner w/2 kW processor
• 4º horizontal beamwidth, 25º vertical
beamwidth
• Up to 48 nm range


 
 

radar 1 radar 2
HDS high-definition radar display. Radar chart overlay display.

HDS Products

 

1 - Insight mapping options available on HDS products sold in the Americas market only.
2 - 2-year extended warranty only new for Americas market.
3 - SIRIUS satellite weather/radio option available for the Americas market only.
* - Available as a software update March 2009.

Sonar Tutorialscrolling sonar
People have been fishing for thousands of years. Every person fishing has had the same problem - finding fish and getting them to bite. Although sonar can’t make the fish bite, it can solve the problem of finding fish. You can’t catch them if you’re not fishing where they are - and the Lowrance sonar will prove it

In the late 1950s, Carl Lowrance and his sons Arlen and Darrell began scuba diving to observe fish and their habits. This research, substantiated by local and federal government studies, found that about 90 percent of the fish congregated in 10 percent of the water on inland lakes. As environmental conditions changed, the fish would move to more favorable areas. Their dives confirmed that most species of fish are affected by underwater structure (such as trees, weeds, rocks, and drop-offs), temperature, current, sunlight and wind. These and other factors also influence the location of food (baitfish, algae and plankton). Together, these factors create conditions that cause frequent relocation of fish populations.

During this time, a few people were using large, cumbersome sonar units on fishing boats. Working at low frequencies, these units used vacuum tubes which required car batteries to keep them running. Although they would show a satisfactory bottom signal and large schools of fish, they couldn’t show individual fish. Carl and his sons began to conceptualize a compact, battery operated sonar that could detect individual fish. After years of research, development, struggle and simple hard work, a sonar was produced that changed the fishing world forever. Out of this simple beginning, a new industry was formed in 1957 with the sale of the first transistorized sportfishing sonar. In 1959, Lowrance introduced “The Little Green Box,” which became the most popular sonar instrument in the world. All transistorized, it was the first successful sportfishing sonar unit. More than a million were made until 1984, when it was discontinued due to high production costs. We’ve come a long way since 1957.  From “little green boxes” to the latest in sonar and GPS technology, Lowrance continues to lead in the world of sportfishing sonar.

How it Works

The word "sonar" is an abbreviation for "SOund, NAvigation and Ranging." It was developed as a means of tracking enemy submarines during World War II.  A sonar consists of a transmitter, transducer, receiver and display.

In the simplest terms, an electrical impulse from a transmitter is converted into a sound wave by the transducer and sent into the water. When this wave strikes an object, it rebounds. This echo strikes the transducer, which converts it back into an electric signal, which is amplified by the receiver and sent to the display. Since the speed of sound in water is constant (approximately 4800 feet per second), the time lapse between the transmitted signal and the received echo can be measured and the distance to the object determined. This process repeats itself many times per second.

The frequencies most often used by Lowrance in our sonar are 192 - 200 kHz (kilohertz); we also make some units that use 50 kHz. Although these frequencies are in the sound spectrum, they’re inaudible to both humans and fish. (You don’t have to worry about the sonar unit spooking the fish - they can’t hear it.)

As mentioned earlier, the sonar unit sends and receives signals, then “prints” the echo on the display. Since this happens many times per second, a continuous line is drawn across the display, showing the bottom signal. In addition, echoes returned from any object in the water between the surface and bottom are also displayed. By knowing the speed of sound through water (4800 feet per second) and the time it takes for the echo to be received, the unit can show the depth of the water and any fish in the water.

Total System Performance

There are four facets to a good sonar unit:

  • High power transmitter.
     
  • Efficient transducer.
     
  • Sensitive receiver.
     
  • High resolution/contrast display.
     

We call this our "Total System Performance" specification. All of the parts of this system must be designed to work together, under any weather condition and extreme temperatures.

High transmitter power increases the probability that you will get a return echo in deep water or poor water conditions. It also lets you see fine detail, such as bait fish and structure.

The transducer must not only be able to withstand the high power from the transmitter, but it also has to convert the electrical power into sound energy with little loss in signal strength. At the other extreme, it has to be able to detect the smallest of echoes returning from deep water or tiny bait fish.

The receiver also has an extremely wide range of signals it has to deal with. It must dampen the extremely high transmit signal and amplify the small signals returning from the transducer. It also has to separate targets that are close together into distinct, separate impulses for the display.

The display must have high resolution (vertical pixels) and good contrast to be able to show all of the detail crisply and clearly. This allows fish arches and fine detail to be shown.

Frequency
Most Lowrance sonar units today operate at 192 or 200 kHz (kilohertz), with a few using 50 kHz.

There are advantages to each frequency, but for almost all freshwater applications and most saltwater applications, 192 or 200 kHz is the best choice. It gives the best detail, works best in shallow water and at speed, and typically shows less "noise" and undesired echoes.  Target definition is also better with these higher frequencies.  This is the ability to display two fish as two separate echoes instead of one "blob" on the screen.

There are some applications where a 50 kHz frequency is best.  Typically, a 50 kHz sonar (under the same conditions and power) can penetrate water to deeper depths than higher frequencies.  This is due to water's natural ability to absorb sound waves.  The rate of absorption is greater for higher frequency sound than it is for lower frequencies.  Therefore, you'll generally find 50 kHz used in deeper saltwater applications.  Also, 50 kHz transducers typically have wider coverage angles than 192 or 200 kHz transducers. This characteristic makes them useful in tracking multiple downriggers.  Thus, even when these downriggers are in relatively shallow depths, 50 kHz is preferred by many fishermen.  In summary, the differences between these frequencies are:

192 or 200 kHz 50 kHz
  • Shallower depths.
  • Narrow cone angle.
  • Better definition and target separation.
  • Less noise susceptibility.
  • Deeper depths.
  • Wide cone angle.
  • Less definition and target separation.
  • More noise susceptibility.

Transducers
The transducer is the sonar unit's "antenna." It converts electric energy from the transmitter to high frequency sound. The sound wave from the transducer travels through the water and bounces back from any object in the water. When the returning echo strikes the transducer, it converts the sound back into electrical energy which is sent to the sonar unit's receiver. The frequency of the transducer must match the sonar unit's frequency. In other words, you can't use a 50 kHz transducer or even a 200 kHz transducer on a sonar unit designed for 192 kHz! The transducer must be able to withstand high transmitter power impulses, converting as much of the impulse into sound energy as possible. At the same time, it must be sensitive enough to receive the smallest of echoes. All of this has to take place at the proper frequency and reject echoes at other frequencies. In other words, the transducer must be very efficient.

Crystal
The active element in a transducer is a man-made crystal (lead zirconate or barium titanate). To make these crystals the chemicals are mixed, then poured into molds. These molds are then placed in an oven which "fires" the chemicals into the hardened crystals. Once they've cooled, a conductive coating is applied to two sides of the crystal. Wires are soldered to these coatings so the crystal can be attached to the transducer cable. The shape of the crystal determines both its frequency and cone angle. For round crystals (used by most sonar units), the thickness determines its frequency and the diameter determines the cone angle or angle of coverage (see Cone Angles section).  For example at 192 kHz, a 20 degree cone angle crystal is approximately one inch in diameter, whereas an eight degree cone requires a crystal that is about two inches in diameter. That's right. The larger the crystal's diameter - the smaller the cone angle. This is the reason why a twenty degree cone transducer is much smaller than an eight degree one - at the same frequency.

Housings
Transducers come in all shapes and sizes. Most transducers are made from plastic, but some thru-hull transducers are made from bronze. As shown in the previous section, frequency and cone angle determine the crystal's size. Therefore, the transducer's housing is determined by the size of the crystal inside.

For more information on transducer types and their applications see The Transducer Selection Guide.

Speed and the Transducer

Cavitation is a major obstacle to achieving high speed operation. If the flow of water around the transducer is smooth, then the transducer sends and receives signals normally. However, if the flow of water is interrupted by a rough surface or sharp edges, then the water flow becomes turbulent. So much so that air becomes separated from the water in the form of bubbles. This is called "cavitation." If these air bubbles pass over the face of the transducer (the part of the housing that holds the crystal), then "noise" is shown on the sonar unit's display. You see, a transducer is meant to work in water - not air. If air bubbles pass over the transducer's face, then the signal from the transducer is reflected by the air bubbles right back into it. Since the air is so close to the transducer, these reflections are very strong. They will interfere with the weaker bottom, structure, and fish signals, making them difficult or impossible to see.

The solution to this problem is to make a transducer housing that will allow the water to flow past it without causing turbulence. However, this is difficult due to the many constraints placed upon the modern transducer. It must be small, so that it doesn't interfere with the outboard motor or its water flow. It must be easy to install on the transom so that a minimum of holes need to be drilled. It must also "kick-up" without damage if struck by another object. Again, the patented design of the HS-WS transducer is Lowrance's latest improvement in high-speed transducer technology. It combines high speed operation with easy installation and will "kick-up" if struck by an object at high speed.

The cavitation problem is not limited to the shape of the transducer housing. Many boat hulls create air bubbles that pass over the face of a transom mounted transducer. Many aluminum boats have this problem due to the hundreds of rivet heads that protrude into the water. Each rivet streams a river of air bubbles behind it when the boat is moving, especially at high speed. To fix this problem,  mount the face of the transducer below the air bubbles streaming from the hull. This typically means you have to mount the transducer's bracket as far down as possible on the transom.

Transducer Cone Angles
The transducer concentrates the sound into a beam. When a pulse of sound is transmitted from the transducer, it covers a wider area the deeper it travels. If you were to plot this on a piece of graph paper, you would find that it creates a cone shaped pattern, hence the term "cone angle."  The sound is strongest along the center line or axis of the cone and gradually diminishes as you move away from the center.

In order to measure the transducer's cone angle, the power is first measured at the center or axis of the cone and then compared to the power as you move away from the center.  When the power drops to half (or -3db[decibels] in electronic terms), the angle from that center axis is measured. The total angle from the -3db point on one side of the axis to the -3db point on the other side of the axis is called the cone angle.

This half power point (-3db) is a standard for the electronics industry and most manufacturers measure cone angle in this way, but a few use the -10db point where the power is 1/10 of the center axis power. This gives a greater angle, as you are measuring a point further away from the center axis. Nothing is different in transducer performance; only the system of measurement has changed. For example, a transducer that has an 8 degree cone angle at -3db would have a 16 degree cone angle at -10db.

Although the half power point is the standard for measuring cone angles, fish detection angles are much larger. Lowrance sonar units have very sensitive receivers and can detect return echoes from fish, structure or the bottom out to 60° or more. This means that the fish detection angle is 60° even though the cone angle is only 20°.

20 degree cone angle | 8 degree cone angle
Lowrance offers transducers with a variety of cone angles. Wide cone angles will show you more of the underwater world, at the expense of depth capability, since it spreads the transmitter's power out. Narrow cone angle transducers won't show you as much of what's around you, but will penetrate deeper than the wide cone. The narrow cone transducer concentrates the transmitter's power into a smaller area. A bottom signal on the sonar unit's display will be wider on a wide cone angle transducer than on a narrow one because you are seeing more of the bottom. The wide cone's area is much larger than the narrow cone.

High frequency (192 - 200 kHz) transducers come in either a narrow or wide cone angle.  The wide cone angle should be used for most freshwater applications and the narrow cone angle should be used for all saltwater applications.  Low frequency (50 kHz) sonar transducers are typically in the 30 to 45 degree range. Although a transducer is most sensitive inside its specified cone angle, you can also see echoes outside this cone; they just aren't as strong. The effective cone angle is the area within the specified cone where you can see echoes on the display. If a fish is suspended inside the transducer's cone, but the sensitivity is not turned up high enough to see it, then you have a narrow effective cone angle. You can vary the effective cone angle of the transducer by varying the receiver's sensitivity. With low sensitivity settings, the effective cone angle is narrow, showing only targets immediately beneath the transducer and a shallow bottom. Turning the sensitivity control up increases the effective cone angle, letting you see targets farther out to the sides.

Water and Bottom Conditions
The type of water you're using the sonar in affects its operation to a large degree. Sound waves travel easily in a clear freshwater environment, such as most inland lakes.

In salt water however, sound is absorbed and reflected by suspended material in the water. Higher frequencies are most susceptible to this scattering of sound waves and can't penetrate salt water nearly as well as lower frequencies. Part of the problem with salt water is that it's a very dynamic environment - the oceans of the world. Wind and currents constantly mix the water. Wave action creates and mixes air bubbles into the water near the surface, which scatters the sonar signal. Micro-organisms, such as algae and plankton, scatter and absorb the sonar signal. Minerals and salts suspended in the water do the same thing. Fresh water also has wind, currents and micro-organisms living in it that affect the sonar's signal - but not as severely as salt water.

Mud, sand and vegetation on the bottom absorb and scatter the sonar signal, reducing the strength of the return echo. Rock, shale, coral and other hard objects reflect the sonar signal easily. You can see the difference on your sonar's screen. A soft bottom, such as mud, shows as a thin line across the screen. A hard bottom, such as rock, shows as a wide line on the sonar's screen.
 

Soft Bottom |  Hard Bottom
You can compare sonar to using a flashlight in a dark room. Moving the light around the room, it's easily reflected from white walls and bright, hard objects. Moving the light onto a darkly carpeted floor returns less light because the dark color of the carpet absorbs the light, and the rough texture scatters it, returning less light to your eyes. Adding smoke to the room (children, don't try this at home!), you'll see even less. The smoke is equivalent to salt water's effect on the sonar signal.

Water Temperature and Thermodlcines

Water temperature has an important influence upon the activities of all fish. Fish are cold-blooded and their bodies are always the temperature of the surrounding water. During the winter, colder water slows down their metabolism. At this time, they need about a fourth as much food as they consume in the summer.

Most fish don't spawn unless the water temperature is within rather narrow limits. The surface water temperature gauge built into many of our sonar units helps identify the desired surface water spawning temperatures for various species. For example, trout can't survive in streams that get too warm. Bass and other fish eventually die out when stocked in lakes that remain too cold during the summer. While some fish have a wider temperature tolerance than others, each has a certain range within which it tries to stay. Schooling fish suspended over deep water lie at the level that provides this temperature. We assume they are the most comfortable here.
 

Lowrance liquid crystal graph marking a thermocline on Skiatook Lake near Tulsa, in Oklahoma, between 40 and 50 feet of water.  Notice how the thermocline stays consistent across the body of water regardless of bottom contour.

The temperature in a lake is seldom the same from the surface to the bottom. Usually there is a warm layer of water and a cooler layer. Where these layers meet is called a thermocline. The depth and thickness of the thermocline can vary with the season or time of day. In deep lakes there may be two or more thermoclines. This is important because many species of game fish like to suspend in, just above, or just below the thermocline. Many times bait fish will be above the thermocline while larger game fish will suspend in or just below it. Fortunately, this difference in temperatures can be seen on the sonar screen. The greater the temperature differential, the denser the thermocline shows on the screen.

Operation

Automatic

After starting your boat, go to a protected cove and stop. Leave the engine on. You may want to take a partner along to operate the boat while you learn how to use the sonar. Press the sonar unit's ON key and idle slowly around the cove. You'll probably see a screen similar to the one to the left. The dashed line at the top of the screen represents the surface. The bottom shows in the lower part of the screen. The current water depth (33.9 feet) shows in the upper left corner of the screen. The depth range in this example is 0 to 40 feet. Since the unit is in the automatic mode, it continually adjusts the range, keeping the bottom signal on the display.

Fish-Symbol I.D.™

Every Lowrance LCG offers the convenience of our Advanced Fish-Symbol I.D.™. Activated by the press of a button, Advanced Fish Symbol I.D.™ lets your unit do the work of interpreting return sonar signals. Advanced Fish Symbol I.D.™ works in automatic mode only. If you turn it on while in manual mode, it will switch to automatic mode. Fish and other suspended targets are clearly displayed as fish-shaped symbols in four different sizes.

Advanced Fish Symbol I.D.™ is designed to give a simplified, easy to interpret display of suspended targets that are assumed to be fish. After gaining experience with your sonar, you will probably turn it off much of the time so you can see all of the detailed information on fish movement, thermoclines, schools of baitfish, weed beds, bottom structure, etc.

ASP™ (Advanced Signal Processing)
Advanced Signal Processing (ASP™) is another exclusive Lowrance innovation that uses sophisticated programming and advanced digital electronics to continually monitor the effects of boat speed, water conditions and other interference sources - and automatically adjusts the sonar settings to provide the clearest picture possible.

ASP™ sets the sensitivity as high as possible while keeping the screen free of "noise." It automatically balances sensitivity and noise rejection. The feature can be turned off and on and will work whether the sonar is in automatic or manual mode. With ASP™ operating behind the scenes you'll spend less time making routine sonar adjustments and more time spotting fish.

Sensitivity
The sensitivity controls the ability of the unit to pick up echoes. A low sensitivity level excludes much of the bottom information, fish signals, and other target information. High sensitivity levels enable you to see this detail, but it can also clutter the screen with many undesirable signals. Typically, the best sensitivity level shows a good solid bottom signal with GRAYLINE® and some surface clutter. When in the automatic mode, the sensitivity is automatically adjusted to keep a solid bottom signal displayed, plus a little more. This gives the unit the capability to show fish and other detail. In automatic mode, the unit also adjusts sensitivity automatically for water conditions, depth, etc.  When you adjust the sensitivity up or down, you are biasing up or down the normal setting the unit's automatic control would choose. With ASP™ enabled, the automatic mode picks the proper sensitivity level for 95% of all situations, so it is recommend to always use this normal mode first. But, for those unusual situations where it is warranted you can bias it up or down. You can also turn off the automatic sensitivity control for special uses.

To properly adjust the sensitivity while the unit is in the manual mode, first change the range to double its current setting. For example, if the range is 0 - 40 feet, change it to 0 - 80 or 0 - 100 feet. Now increase the sensitivity until a second bottom echo appears at twice the depth of the actual bottom signal. This "second echo" is caused by the echo returning from the bottom reflecting off the surface of the water, making a second trip to the bottom and returning. Since it takes twice as long for this echo to make two trips to the bottom and back, it shows at twice the depth of the actual bottom. Now change the range back to the original scale. You should see more echoes on the screen. If there is too much noise on the screen, back the sensitivity level down a step or two.

Grayline
GRAYLINE® lets you distinguish between strong and weak echoes. It "paints" gray on targets that are stronger than a preset value. This allows you to tell the difference between a hard and soft bottom. For example, a soft, muddy or weedy bottom returns a weaker symbol which is shown with a narrow or no gray line. A hard bottom returns a strong signal which causes a wide gray line.

If you have two signals of equal size, one with gray and the other without, then the target with gray is the stronger signal. This helps distinguish weeds from trees on the bottom or fish from structure.

GRAYLINE® is adjustable. Since GRAYLINE® shows the difference between strong and weak signals, adjusting the sensitivity may also require a different GRAYLINE® level.

 Zoom

 

You may see fish arches while trolling with the unit in a 0 - 60 foot scale, however it it much easier to see the arches when using the zoom feature. This enlarges all echoes on the screen. Turning the zoom feature on gives you a screen similar to the one at left. The range is 8 - 38 feet, a 30-foot zoom. As you can see, all targets have been enlarged, including the bottom signal. Fish arches (A & B) are much easier to detect, and important structure (C) near the bottom is magnified. This also shows small fish hanging just beneath the surface clutter (D). The above steps are all that's required to manually adjust your sonar unit for optimum fish finding capability. After you've become more familiar with your unit, you'll be able to adjust the sensitivity properly without having to look for a second echo.

Fish Arches
One of the most common questions that we receive is "How do I get fish arches to show on my screen?" It's really pretty simple to do, but it does require attention to detail, not only in the way you make the adjustments to the unit, but to the whole sonar installation.

It also helps to see the Why Fish Arch section below. This explains how arches are created on your sonar's screen.

Screen Resolution
The number of vertical pixels that the screen is capable of showing is called Screen Resolution. The more vertical pixels on a sonar's screen, the easier it will be for it to show fish arches. This plays an important role in a sonar unit's capability to show fish arches. The chart below lists the pixel sizes and area they represent down to 50 feet for two different screens.
 

PIXEL HEIGHT   PIXEL HEIGHT
100 VERTICAL PIXEL SCREEN   240 VERTICAL PIXEL SCREEN
RANGE PIXEL HEIGHT   RANGE PIXEL HEIGHT
0-10 feet 1.2 inches   0-10 feet 0.5 inches
0-20 feet 2.4 inches   0-20 feet 1.0 inches
0-30 feet 3.6 inches   0-30 feet 1.5 inches
0-40 feet 4.8 inches   0-40 feet 2.0 inches
0-50 feet 6.0 inches   0-50 feet 2.5 inches


 

As you can see, one pixel represents a larger volume of water with the unit in the 0 - 100 foot range than it does with the unit in the 0 - 10 foot range. For example, if a sonar has 100 pixels vertically, with a range of 0 - 100 feet, each pixel is equal to a depth of 12 inches. A fish would have to be pretty large to show up as an arch at this range. However, if you zoom the range to a 30-foot zoom (for example from 80 to 110 feet), each pixel is now equal to 3.6 inches. Now the same fish will probably be seen as an arch on the screen due to the zoom effect. The size of the arch depends on the size of the fish - a small fish will show as a small arch, a larger fish will make a larger arch, and so on. Using a sonar unit with a small number of vertical pixels in very shallow water, a fish directly off the bottom will appear as a straight line separate from the bottom. This is because of the limited number of dots at that depth. If you are in deep water (where the fish signal is displayed over a larger distance of boat travel), zooming the display into a 20 or 30 foot window around the bottom shows fish arches near the bottom or structure. This is because you have reduced the pixel size in a larger cone.
 

On the right above is a section of a 240 vertical pixel screen. On the left is a simulated version of the same screen with only 100 vertical pixels. As you can see, the screen on the right has much better definition than does the one on the left. You can see fish arches much easier on the 240 pixel screen.
 

Chart Speed
The scrolling or chart speed can also affect the type of arch displayed on the screen. The faster the chart speed, the more pixels are turned on as the fish passes through the cone. This will help display a better fish arch. (However, the chart speed can be turned up too high. This stretches the arch out. Experiment with the chart speed until you find the setting that works best for you.)

Transducer Installation
If you still don't get good fish arches on the screen, it could be the transducer's mounting is incorrect. If the transducer is mounted on the transom, adjust it until its face is pointing straight down when the boat is in the water. If it is angled, the arch won't appear on the screen properly. If the arch slopes up but not down, then the front of the transducer is too high and needs to be lowered. If only the back half of the arch is printed, the nose of the transducer is angled too low and needs to be raised.

Fish Arch Review

1. Sensitivity
Automatic operation with Advanced Signal Processing (ASP™) turned on should give you the proper sensitivity settings but, if necessary, the sensitivity may be increased.

2. Target Depth
The depth of the fish can determine if the fish will arch on the screen. If the fish is in shallow water, the fish is not in the cone angle very long, making it difficult to show an arch. Typically, the deeper the fish, the easier it is to show an arch.

3. Boat Speed
The boat's engine should be in gear at an idle or just above. Experiment with your boat to find the best throttle location for good arches. Usually, a slow trolling speed works best.

4. Chart Speed
Use at least 3/4 chart speed or higher.

5. Zoom Size
If you see markings that are possible fish, but they do not arch, zoom in on them. Using the zoom function lets you effectively increase the screen's resolution.

Final Notes on Fish Arches
Very small fish probably will not arch at all. Because of water conditions such as heavy surface clutter or thermoclines, the sensitivity sometimes cannot be turned up enough to get fish arches. For the best results, turn the sensitivity up as high as possible without getting too much noise on the screen. In medium to deep water, this method should work to display fish arches.

A school of fish will appear as many different formations or shapes, depending on how much of the school is within the transducer's cone. In shallow water, several fish close together appear like blocks that have been stacked in no apparent order. In deep water, each fish will arch according to its size.

Why Fish Arch
The reason fish show as an arch is because of the relationship between the fish and the cone angle of the transducer as the boat passes over the fish. As the leading edge of the cone strikes the fish, a display pixel is turned on. As the boat passes over the fish, the distance to the fish decreases. This turns each pixel on at a shallower depth on the display. When the center of the cone is directly over the fish, the first half of the arch is formed. This is also the shortest distance to the fish. Since the fish is closer to the boat, the signal is stronger and the arch is thicker. As the boat moves away from the fish, the distance increases and the pixels appear at progressively deeper depths until the cone passes the fish.

If the fish doesn't pass directly through the center of the cone, the arch won't be as well defined. Since the fish isn't in the cone very long, there aren't as many echoes to display, and the ones that do show are weaker. This is one of the reasons it's difficult to show fish arches in shallow water. The cone angle is too narrow for the signal to arch.

Remember, there must be movement between the boat and the fish to develop an arch. Usually, this means trolling at a slow speed with the main engine. If you are anchored or stopped, fish signals won't arch. Instead, they'll show as horizontal lines as they swim in and out of the cone.

Actual On-The-Water Chart Recordings
The following chart records are from a Lowrance X-85 liquid crystal graph sonar. It has 3000 watts of transmitter power, a 240 x 240 pixel screen and operates at 192 kHz.


Cone Angle
A transducer's cone angle determines its coverage area of the underwater world. The wider the cone angle, the greater the area that's covered. We offer a variety of 200 kHz transducers with either a wide (20°) or narrow (12°) cone angle. The 50 kHz transducers come with a 35° cone angle. The dual-frequency transducers come with both a narrow (12°) 200 kHz and a wide (35°) 50 kHz cone angles. And the dual-search transducers come with both a narrow (12°) 200 kHz and a wide (35°) 83 kHz cone angles.

Generally, use a wide cone angle for fishing shallow to medium depths. The narrow cone penetrates to deeper depths, but shows less fish and structure due to its narrow beam.

The depth capability of your sonar units depends on its transmitter power, receiver, sensitivity, frequency, transducer and transducer installation. Other things that effect depth capability are: water conditions and type(all sonars will show deeper depth readings in fresh water than salt) and bottom conditions.

Types of Transducer Installations
Most of our permanent-mount transducers are designed for high-speed operations. For the best results, the transducer should be placed where a smooth, undisturbed flow of water will pass across the face of the transducer at all boat speeds. Read your transducer's owner's manual before installing the transducer!
 

  << Transom Mount
The transom-mount transducer is the most popular, and it's generally the easiest to install. The Skimmer® transducer design performs best when it is slightly below the boat's hull. A plastic transducer is recommended on aluminum or steel-hulled boats to avoid potential electrolysis problems.

Mounting the transducer on the transom is recommended for outboard and stern-drive (I/O) powered boats only. Transom mounting is ideal for high-speed operation and models with the "kick-up" feature will prevent damage if the transducer strikes an object.

Make certain that the chosen location doesn't interfere with the boat's trailer. DO NOT mount the transducer directly behind the ribs, or thru-hull fittings. Typically, on aluminum boats, mounting the transducer between two ribs works best. On all hulls, mount the transducer at least one foot away from the engine's lower unit. This helps to prevent air bubbles from the transducer interfering with the propeller.

Periodically wash the bottom of the transducer with soap and water to remove any oil film or growth that may collect. Oil and dirt reduce the transducer's sensitivity and can even prevent its operation.

<< Shoot-Thru-Hull Mount
In this installation, the transducer is bonded to the inside of the hull with epoxy. Ideally, the transducer is placed in the aft third of the hull close to the centerline. The signal "shoots through" the hull with some loss of signal strength. This installation must be made in an area of the hull that is made from solid fiberglass, with no air bubbles or separated layers. If the hull is of multi-layer or "sandwich" construction, you will have to remove the inner layer of fiberglass and the wood or foam core to expose the outer layer of the hull. This type of mount is recommended only with 192 or 200 kHz transducers.

<< Bolt-Thru-Hull Mount
In this type of installation, a hole is cut in the hull and the transducer is mounted through the hull by means of a threaded shaft and nut. If the boat hull has a dead rise higher than 10 degrees, fairing blocks made from wood or plastic must be fabricated so that the transducer will mount in a completely vertical position.  The TH-FLW P5 model does not require a fairing block.

On in-boards, the transducer must be installed ahead of the propeller, shaft(s), and engine water intake(s).

If the boat's hull is made of steel or aluminum, use a plastic transducer to prevent electrolysis problems.
 

<< Trolling Motor Mount
The PD-W "pod" transducer is designed for mounting on an electric trolling motor. It has two slots for a hose clamp (which must be purchased separately). Skimmer® transducers can also be mounted on a trolling motor using the TMB-S trolling motor bracket. It's curved to fit the contour of most electric trolling motors.



Transducer Installation Guide

Gimbal Mount Unit
The unit can be installed on the top of a dash or from an overhead. Mount the unit in any convenient location, provided there is clearance, when it is tilted for the best viewing angle. Holes in the bracket’s base allow wood screw or through bolt mounting. It may be necessary to place a piece of plywood on the back side of thin panels to reinforce the panel. Make certain there is enough room behind the unit to attach the power and transducer cables.

Drill a hole in the dash for the power and transducer cables. The best location for this hole is immediately under the gimbal bracket. This way, the bracket covers the hole. The smallest hole the power/transducer cable connector can pass through is 5/8".

Note: Install the transducer before wiring the power cable!

After installing the transducer and power cables, slide the bracket over the hole, then route the transducer and power cables out the slot in the back of the bracket. Finally, fasten the bracket to the dash.

Attach the unit to the gimbal bracket using the supplied gimbal knobs and washers as shown above.

Permanent Mount Transducer
The transom mount transducer can be installed on any outboard or stern-drive (inboard\outboard) powered boat.

 

The "kick-up" mounting bracket helps prevent damage if the transducer strikes an object while the boat is moving. If the transducer does "kick-up", the bracket can easily be pushed back in place without tools.

Always read the transducer installation instructions that came with your unit carefully before attempting the installation. Determine which of the mounting positions is right for your boat. Use extreme care when mounting the transducer, since the transducer location is the most critical part of a sonar installation. If it isn’t done properly, the sonar can’t perform at it’s designed potential.

Location
1. The transducer must be placed in a location that has a smooth flow of water at all times. If the transducer is not placed in a smooth flow of water, interference will show on the sonar’s display in the form of random lines or dots whenever the boat is moving.

2. The transducer should be installed with it’s face pointing straight down, if possible.

3. Make certain the transducer's location doesn’t interfere with the trailer or hauling of the boat. Also, don’t mount it closer than approximately one foot from the engine’s lower unit. This will prevent cavitation interference with the propeller. Typically, the transducer should be mounted as deep in the water as possible. This increases the chance that it will be in the water in high speed and reduces the possibility of air bubble interference.

4. If possible, route the transducer cable away from other wiring on the boat. Electrical noise from engine wiring, bilge pumps, and aerators can be displayed on the sonar’s screen. Use caution when routing the transducer cable around these wires.



Unit Resets Lowrance

 
What is the Reset for ... Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
1220 Reset   N/A N/A
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
3500 Reset   N/A N/A
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
1240A Reset   N/A N/A
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
AirMap 100 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and release the PWR key 3. Press and hold the PWR key
4. Release PAGES key when the unit completely powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER  to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
AirMap 1000 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN & ZOUT keys
3. Press and hold the PWR key 3. Press and release the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
AirMap 2000c Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN & ZOUT keys
3. Press and hold the PWR key 3. Press and release the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
AirMap Reset   1. Turn unit OFF 1. Turn unit OFF
  2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
  3. Press and hold the PWR key 3. Press and hold the PWR key
  4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
    5. Advance cursor to FINAL SETUP, press EXIT, then ENTER to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
AirMap 300 Reset   1. Turn unit OFF 1. Turn unit OFF
  2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
  3. Press and hold the PWR key 3. Press and hold the PWR key
  4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
    5. Advance cursor to FINAL SETUP, press EXIT, then ENTER to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
AirMap 500 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press FIND.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
AirMap 600C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press FIND.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Brunton Atlas Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the Status Page appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Elite 5 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Elite 5 DSI Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Elite 5m Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Elite 5x  Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Elite 5x DSI Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Endura (All units) 1. Power unit on  No hard reset available.
2. Press Menu  
3. Select Settings  
4. Scroll down to Restore Defaults and select it  
5. Select Yes  
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the UP & DOWN arrow keys
3. Press and hold the PWR key 3. Press the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press Exit, then ENT to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 1000 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the CLR key 2. Press and hold the upper left hand corner key
3. Turn unit ON 3. Turn unit ON
4. Release both buttons when unit powers up 4. A test screen appears
  5. Release upper left hand corner key
  6. Press the CLR key
  7. Shut unit off
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 2000 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the CLR key 2. Press and hold the upper left hand corner key
3. Turn unit ON 3. Turn unit ON
4. Release both buttons when unit powers up 4. A test screen appears
  5. Release upper left hand corner key
  6. Press the CLR key
  7. Shut unit off
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 2400 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 3000 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 4800 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when the unit beeps.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 100 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and release the PWR key 3. Press the PWR key
4. Release PAGES key when the unit completely powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENT to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 12 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 1600 Reset   1. Turn unit OFF 1. Turn unit off
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and release the PWR key 3. Press and hold the PWR key
4. Release PAGES key when the unit completely powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 2000 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the CLR key 2. Press and hold the upper left hand corner key
3. Turn unit ON 3. Turn unit ON
4. Release both buttons when unit powers up 4. A test screen appears
  5. Release upper left hand corner key
  6. Press the CLR key
  7. Shut unit off
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 3300c Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 3500C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 3600C iGPS Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 4000M Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 4900M Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 5000C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 5200C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 5300C  iGPS Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 5500C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 6000C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 6500C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 6600C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 7000C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 7200C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
  Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 7300C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 7500C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 7600C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 8200C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 8300C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 9200C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap 9300C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap Baja Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when the unit beeps.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap Baja 480C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when the unit beeps.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap Baja 540C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when the unit beeps.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalMap Baja 840C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalNav 12 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalNav 200 Reset   . Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalNav 212 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalNav 310 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalNav II Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold CLR key 2. Press and hold the upper left hand corner key
3. Turn Unit ON 3. Press and hold the ON key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST Screen appears
  5. Press the CLR key
  6. Shut the Unit off.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalNav II A Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold CLR key 2. Press and hold the upper left hand corner key
3. Turn Unit ON 3. Press and hold the ON key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST Screen appears
  5. Press the CLR key
  6. Shut the Unit off.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
GlobalNav Sport Reset   1. Press the ON button 1. Turn unit OFF
2. Press POS button 2. Press and hold F4 key
3. Turn Menu 3. Press the ON key
4. Press Right Arrow twice 4. Release both buttons when diagonal lines appear
5. Press F5 (preset unit) 5. Press the CLR key to return to normal screen
   
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 5 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 5m Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 5x Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 7 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 7m Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 8 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 8m Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 10 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all  buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
HDS 10m Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
4. Release all buttons when the USA map appears 4. Release all  buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFINDER Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the Status Page appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFINDER Atlantis Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the Status Page appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFINDER Express Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the Status Page appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
IFinder Explorer Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
IFinder Expedition C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFinder GO Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the Status Page appears 4. Release both buttons when the Status Page appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFINDER GO2 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the Status Page appears 4. Release both buttons when the Status Page appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
IFinder H2O Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
IFinder H2O C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFINDER Hunt Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFINDER Hunt C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFinder Map & Music Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MAP/MUSIC key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFinder PHD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MAP/MUSIC key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
iFinder Pro Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
IWAY 100M Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the Speak key. 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. A tone will sound
  5. When tone is sounding, release buttons and immediately press and hold the FIND key.
  6. While pressing FIND, a higher tone will sound
  7. The unit will reset. Turn unit OFF and back ON.
   Soft Reset (Does not delete GPS Data) Power Reset (Only resets power to the unit. No data is lost or settings changed.)
IWAY  250C Reset      
1. Use stylus to press the box in the upper left hand corner. 1. Use stylus to press button on the bottom of the unit. 
2. Select options.  Page 3 2. Unit will shut off. 
3. Select Reset Options.  Select Yes.  
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
IWAY 350C Reset   1. Use stylus to press the box in the upper left hand corner. 1. Turn unit OFF
2. Select options.  Page 3 2. Press and hold the Power Key.
3. Select Reset Options.  Select Yes. 3. Continue to hold the Power Key until the screen goes blank.
  4. Release the Power Key. The unit will turn on and is reset.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
IWAY 500C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MAP/MUSIC key 2. Press and hold the SPEAK/VOLUME key
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release all buttons when the unit powers up 4. Release both buttons when the test menu appears.
  5. Press the Hard Reset button.  The unit will shut off. 
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
IWAY 600C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MAP/MUSIC key 2. Press and hold the SPEAK/VOLUME key
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release all buttons when the unit powers up 4. Release both buttons when the test menu appears.
  5. Press the Hard Reset button.  The unit will shut off. 
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
LCF 1440 Reset     1. Turn unit OFF - Press and hold the up arrow key.
2. Press power, unit will enter production test mode.
3. Press PWR/clear key 6 times.
4. press MENU DOWN and unit will shut off.
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
LCG 2400 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the EXIT key 2. Press and hold the LEFT & RIGHT arrow keys
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when unit powers up
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 15ci Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 15ct Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 15mt Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 16ci Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 17M Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 18C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 19C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 20C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 25C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX  26C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 27C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 28C  HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 37C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 38C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 104C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 110C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 111C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 112C  Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LCX 113C HD Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
LDT 3001 Reset   N/A N/A
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
LDT 3003 Reset   N/A N/A
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LGC Baja Reset   N/A N/A
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LGC 12 Reset   N/A N/A
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LGC 12S Reset   N/A N/A
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LGC 12W Reset   N/A N/A
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LGC 2000 Reset   N/A N/A
  Resetting the LHR-20 radio will: Erase any channels stored in memory, return to USA channels if another bank or mode is selected, & return power settings to their original state.
LHR-20 Reset  
1. Turn the radio off by rotating the PWR/VOL knob to the off position.
2. Simutaneously press and hold both SCAN and WX/UIC keys.
3. Turn the radio on, continue to hold the SCAN and WX/UIC keys down for 3 seconds, then release both keys.
   Resetting the LHR-22 radio will: Erase any channels stored in memory, return to USA channels if another bank or mode is selected, & return power settings to their original state.
LHR-22 Reset  
1. Turn the radio off by rotating the PWR/VOL knob to the off position.
2. Simutaneously press and hold both SCAN and WX/UIC keys.
3. Turn the radio on, continue to hold the SCAN and WX/UIC keys down for 3 seconds, then release both keys.
   Resetting the LHR-80 radio will: Return every setting on the radio to the factory defaults, except your MMSI, Group MMSIs and ATIS MMSI.
LHR-80 Reset  
1. Press the CALL/MENU key.
2. Select RESET, press ENTER, the radio asks for confirmation.
3. Select YES, press ENTER to reset the radio and return to the menu.
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
LMF 200 Reset     1. Turn Unit off
2. Press and hold the UP button
3. Turn unit on (activate power to NMEA network or connect unit to operating network)
4. Release UP Button after Test screen appears.
5. Turn unit off (disconnect power to NMEA 2000 network or remove unit from network)
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
LMF 400 Reset     1. Turn Unit off
2. Press and hold the DOWN button
3. Turn unit on (activate power to NMEA network or connect unit to operating network)
4. Release DOWN Button after Test screen appears.
5. Turn unit off (disconnect power to NMEA 2000 network or remove unit from network)
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 160 Reset   1. Turn unit OFF 1. Turn unit off
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and release the PWR key 3. Press and release the PWR key
4. Release PAGES key when the unit completely powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, Press ENTER
  and the unit should power itself off.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 240 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS320 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS320DF Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 330c Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 332C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 334C iGPS Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 335cDF Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 337C  DF Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 339C DF iGPS Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 350 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the CLR key 2. Press and hold the upper left hand corner key
3. Turn unit ON 3. Turn unit ON
4. Release both buttons when unit powers up 4. A test screen appears
  5. Release upper left hand corner key
  6. Press the CLR key
  7. Shut unit off
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 350A Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the CLR key 2. Press and hold the upper left hand corner key
3. Turn unit ON 3. Turn unit ON
4. Release both buttons when unit powers up 4. A test screen appears
  5. Release upper left hand corner key
  6. Press the CLR key
  7. Shut unit off
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 480 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 480DF Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 520C Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 522C iGPS Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 525C  DF Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
LMS 527C  DF iGPS Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the USA map appears 4. Release both buttons when the USA map appears
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
LSM 3 Reset   N/A N/A
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
LST-3800 Reset   Press Menu and go to Options.                                 Press Menu again.                                                         Press the Down button until the box next to Factory S is flashing.                                                                          Press Menu to select that option. N/A
   Soft Reset (Does not delete Data) Hard Reset (Deletes MMSI number!!)
LVR 850 Reset     Turn the radio OFF
Press and hold the SCAN and the MEM key.
Turn the ON/VOL knob to the ON position while keeping keys depressed
Release keys
   Soft Reset (Does not delete Data) Hard Reset (Deletes stored data)
M52 Reset   Use Reset Options in the menu. 1. Turn unit OFF - Press and hold the down arrow key.
2. Press power, unit will enter production test mode.
3. Press exit key 5 times.
4. press ENTER and unit will shut off.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
M56 Reset   Use Reset Options in the menu. 1. Turn unit OFF - Press and hold the down arrow key.
2. Press power, unit will enter production test mode.
3. Press exit key 5 times.
4. press ZOUT and unit will shut off.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
M68C Reset   1.  Turn unit OFF 1. Turn unit OFF - Press and hold the down arrow key.
2.  Press and hold the pages and power keys. 2. Press power, unit will enter production test mode.
3.  When the alarm box appears, release the keys. 3. Press exit key 5 times. (System Info Screen)
  4. press ZOUT and unit will shut off.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
M68C IceMachine Reset   1.  Turn unit OFF 1. Turn unit OFF - Press and hold the down arrow key.
2.  Press and hold the pages and power keys. 2. Press power, unit will enter production test mode.
3.  When the alarm box appears, release the keys. 3. Press exit key 5 times. (System Info Screen)
  4. press ZOUT and unit will shut off.
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Mark-5x Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Mark-5x DSI Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Mark-5x Pro Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the PAGES key 2. Press and hold the ZIN&ZOUT Keys at the same time
3. Press and Release the PWR key 3. Press and Release the PWR key
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Out&Back (Endura) 1. Power unit on  No hard reset available.
2. Press Menu  
3. Select Settings  
4. Scroll down to Restore Defaults and select it  
5. Select Yes  
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
Safari (Endura) 1. Power unit on  No hard reset available.
2. Press Menu  
3. Select Settings  
4. Scroll down to Restore Defaults and select it  
5. Select Yes  
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
SeaNav 12 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and release the PWR key 3. Press and hold the PWR key
4. Release PAGES key when the unit completely powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER
  to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
SeaNav 120 Reset   1. Turn unit OFF 1. Turn unit OFF
2. Press and hold the MODE (or PAGES) key 2. Press and hold the UP & DOWN arrow keys
3. Press and hold the PWR key 3. Press and hold the PWR key
4. Release both buttons when the unit powers up 4. Release both buttons when TEST MENU appears
  5. Advance cursor to FINAL SETUP, press EXIT, then ENTER
  to exit mode
   Soft Reset (Does not delete GPS Data) Hard Reset (Deletes stored GPS Data such as Waypoints and trails)
SeaView 1000 Reset      
   Soft Reset (Does not delete Data)