Fishnder 100 Blue

owners manual

FF 100 Blue covers.indd

08/10/01, 11:56 AM

2001 GARMIN Corporation GARMIN International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. Tel. 913/397.8200 or 800/800.1020 Fax 913/397.8282 GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ, U.K. Tel. 44/1794.519944 Fax 44/1794.519222 GARMIN Corporation No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan Tel. 886/2.2642.9199 Fax 886/2.2642.9099 All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage medium, for any purpose without prior written consent of GARMIN Corporation. GARMIN Corporation hereby grants permission to download a single copy of this manual onto a hard drive or other electronic storage medium to be viewed for personal use, provided that such electronic or printed copy of this manual contains the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual is strictly prohibited. Information in this manual is subject to change without notice. GARMIN Corporation reserves the right to change or improve its products and to make changes in the content without obligation to notify any person or organization of such changes. Visit the GARMIN web site (www.garmin.com) for current updates and supplemental information concerning the use and operation of this and other GARMIN products. GARMIN, DCG, and See-Thru are registered trademarks and Fishnder 160 Blue is a trademark of GARMIN Corporation and may not be used without the express permission of GARMIN Corporation. April 2001 Part Number 190-00198-00 Rev. A Printed in Taiwan
Thank you for choosing the GARMIN Fishnder 100 Blue. This product is designed for easy operation and to provide years of reliable service. Please take the time to read this Owners Manual, and learn the operation of your new unit. This will help ensure that you get the most from the Fishnder 100 Blue. If you encounter a problem, or just have a question, contact our Product Support Department at 913-397-8200 or 800-800-1020, Monday Friday 8:00 a.m. to 5:00 p.m. Central Time. Enjoy your new Fishnder 100 Blue and once again thank you for choosing GARMIN.
Introduction Customer Service Product Registration
Help us better support you by completing our on-line registration today! Have the serial number of your Fishnder 100 Blue handy and connect to our web site (www.garmin.com). Look for the Product Registration link on the Home page. Why should you register your Fishnder 100 Blue? Notication of product updates Notication of new products Lost or stolen unit tracking

FF 100 Blue.indd

09/18/01, 2:57 PM
Introduction Limited Warranty
GARMIN Corporation warrants this product to be free from defects in materials and manufacture for one year from the date of purchase. GARMIN will, at its sole option, repair or replace any components that fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts or labor. The customer is, however, responsible for any transportation costs. This warranty does not cover failures due to abuse, misuse, accident or unauthorized alteration or repairs. THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAY VARY FROM STATE TO STATE. IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT. SOME STATES DO NOT ALLOW THE EXCLUSION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. To obtain warranty service, call the GARMIN Customer Service department (913-397-8200 or 800-800-1020) for a returned merchandise tracking number. The unit should be securely packaged with the tracking number clearly marked on the outside of the package and sent freight prepaid and insured to a GARMIN warranty service station. A copy of the original sales receipt is required as the proof of purchase for warranty repairs. GARMIN retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.
All of the Fishnder 100 Blue screens shown throughout this manual are simulated. These screens are meant to provide the user with a general knowledge of how the unit functions, and may not reect what will actually be seen on the unit when in operation.

The Fishnder 100 Blue Standard Package Includes: Fishnder 100 Blue Surface Mount Bracket with Knobs Power/Data Cable Owners Manual Dual Frequency Transom Mount Transducer (with depth/temp)*
Introduction Packaging and Accessories
Optional Dual Frequency Transducers and Accessories: Plastic Transom Mount Transducer (with depth/temp)* Bronze Thru-Hull Transducer (depth only) Plastic Thru-Hull Transducer (depth only) Speed Sensor* Temperature Sensor Protective Front Cover 10 Transducer Extension Cable 20 Transducer Extension Cable Second Mounting Station Flush Mounting Kit Swivel Mount, 1 RAM Cigarette Lighter Adapter Power/Data Cable 18-Pin A/C PC Adapter (US) 18-Pin A/C PC Adapter (EURO) * Included with Optional Package iii
Introduction Table of Contents
Introduction... i-vi Customer Service... i Limited Warranty... ii Packaging and Accessories.. iii Unit Display... vi Installation...1-9 Transducers.... 1 Transom Mount Installation... 2 In-hull Installation... 3 Speed Sensor Installation.. 4 Wiring Harness Installation... 5 Wiring to a Fuse Block.. 5 Display Installation (Surface Mount).. 7 Display Installation (Flush Mount).. 8 Testing the Installation.. 9
Unit Operation...10-29 Keypad Functions... 10 Display Information... 11
Using the Adjustment Bar:
Range... 12 Zoom... 13 View.... 13 Gain.... 14

Setup Menu:

Chart Tab Frequency... 15 Fish Symbols... 16 Whiteline... 17 Scroll Speed... 17 Scale.... 18 Tools Tab Flasher... 19 Simulator... 19 Noise Reject... 19 Numbers Tab Number Size... 20 Battery Voltage.. 21 Temperature... 21 Speed... 22 Depth Number... 22
Alarm Tab Fish Alarm...23 Shallow Water..24 Deep Water...24 Battery Voltage...25 System Tab Contrast...25 Beeper...26 NMEA Output..26 Language...26 Calibrations Tab Keel Offset...27 Water Type....27 Calibrate Speed...27 Units Tab Depth...28 Temperature...28 Speed...28 Memory Tab Remember...29 Factory Setup...29 Software Version...29
On the Water.. 30-35 Understanding Sonar..30 Transducer Coverage..31 Understanding the Chart...32 Whiteline...33 Thermoclines...34 Simulator Mode...35 Appendix A: Specications. 36 Appendix B: Alarm Messages and Icons. 37 Appendix C: Index.. 38-40

Introduction What can the Fishnder 100 Blue Display?
The Fishnder 100 Blue is capable of displaying a variety of useful information about the underwater environment. Below are a few things the unit will help you see. Water Depth
The unit displays water depth and can provide a warning for shallow or deep-water conditions.

Battery Voltage

The unit can display the battery voltage that is available to the unit.

Speed Over Water*

If equipped with a capable transducer or speed sensor, the unit can display the boats speed over water.

Water Temperature*

If equipped with a capable transducer or temperature sensor, the unit can display the water temperature.
The unit displays sh as arches or sh symbols, and can alert you when a sh is detected.
Thermocline and Structure
With GARMINs See-Thru technology, the Fishnder 100 Blue can display more than just the thermocline and structure. The unit displays sh in and below the thermocline, trees, brush and deadfall like you have never seen before!

Bottom Shape and Type

Garmins unique DCG (Depth Control Gain) system provides a clear graphic representation of the bottom type and its shape.

Transducer Frequency*

If equipped with a capable transducer, the unit will display the frequency selected for use; either 200kHz, 50kHz or Dual.
* Requires optional transducer or speed sensor

Transducers

The transducer acts as the eyes and ears of your new sonar. Proper transducer selection and installation are critical to the operation of your unit. Included in the Optional Package is a 200/50kHz frequency (10/40 cone angle), depth and temperature sensing, transom mount transducer. This transducer provides good all-around performance. Other optional dual frequency transducers are available from your local dealer or GARMIN. The transducer transmits sound waves toward the bottom in a cone shape. The wider the cone angle, the larger the coverage area at a given depth. While it is good to see as large of an area as possible, it is best to select a frequency setting that suits the water that you are on. With a dual frequency transducer, you may select either a 200kHz frequency, a 50kHz frequency or both. The 50kHz frequency setting provides a wide cone angle. This wide cone angle produces a large coverage area, but less detailed bottom resolution. In areas where bottom contours change quickly, this can result in dead zones where fish cannot be seen. In contrast, the 200kHz frequency setting provides a narrow cone angle. This narrow cone angle produces a smaller viewing area (compared to a wide cone angle at the same depth), but with improved bottom resolution and a smaller dead zone. The Dual frequency setting will provide you the most accurate depth and fish returns by transmitting signals at both 200kHz and 50kHz.

Installation Transducers

wide cone angle

narrow cone angle

dead zone fish not seen
Installation Mounting the Transducer
Proper transducer installation is key to getting the best performance from your new unit. If the transducer lead is too short, extension cables are available from you GARMIN dealer. DO NOT cut the transducer lead or any part of the transducer cable, as this will void your warranty. The cable cannot be spliced and connected to any existing (GARMIN or nonGARMIN) transducer cables. Following are some tips and basic installation instructions for the optional dual frequency transducer and speed sensor. Detailed installation instructions are provided in the transducer kits.
Transom Mount Installation
DO NOT mount the transducer behind strakes, struts, ttings, water intake or discharge ports, or anything that creates air bubbles or causes the water to become turbulent. It is important that the transducer be in calm, non-turbulent water for optimal performance.
Dual Frequency Transom Mount Transducer (with depth/temp).
Apply marine sealant to all screw threads to prevent water from seeping into the transom.
Transducer should extend 1/8" below fiberglass hull or 3/8" below aluminum hull
Mount the transducer cable cover well above the waterline.
Make sure that the transducer is below water level when the boat is on plane at high speed
Do not mount transducer directly in the path of the prop. The transducer can cause cavitation that may degrade the boat's performance and damage the prop.
Mount the transducer parallel with the bottom.

In-Hull Installation

To avoid drilling a hole to mount a thru-hull transducer, a transom mount transducer may be used with epoxy inside a boat (also called shootthru-hull installation). For a transducer to be mounted inside the hull (shoot-thru, not thru-hull), the boat must be berglass, no core (contact your boat manufacturer if you are unsure). Test by placing a small amount of water inside the hull, placing the transducer on top of the water, then verifying the accuracy of the locators versus the current water depth. If they are the same, use epoxy (non-silicone based) to afx the transducer to the inside of the hull. If using a temperature sensing transducer, the temperature displayed will reflect the hull temperature.

Wiring to a Fuse Block

Installation Installing the Wiring Harness

10-18 Volt Boat Supply

Install 2-Amp Fuse
If your boat has an electrical system, it may be possible to wire the unit directly to an unused holder on your current fuse block. If you are using the boats fuse block, remove the in-line fuse holder supplied with the unit.
Installing the Wiring Harness:
1. Determine the polarity of the fuse holder using a Test Light or Volt Meter. 2. Install the Red (+) wire on the Positive Fuse Holder Terminal. 3. Install the Black (-) wire on the Negative Fuse Holder Terminal. 4. Install a 2 amp fuse in the Fuse Holder.

Boat Ground

Black Wire
During a typical installation, only the Red and Black wires are used. The Blue wire supplies NMEA data, and doesnt have to be connected for normal operation of the unit. The Yellow wire is not used.

Continued on page 6

Red Wire
Wiring Harness Installation (continued)
If your boat does not have a fuse block, the unit can be wired directly to the battery. Make sure the 2-Amp in-line fuse supplied with the unit is installed. The Fishnder 100 Blue can be connected to another piece of NMEAcompatible electronic equipment. If equipped with a capable transducer and speed sensor, the Fishnder 100 Blue sends depth, temperature and speed information that could be used by, or displayed on another device.
Power/Data er/Data Connection

Transducer

Connecting a Transducer to Multiple Sensors

2-Amp In-Line Fuse

Display Installation (Surface Mount)
The Fishnder 100 Blue can be mounted to a at surface using the supplied Surface Mount Bracket.
Surface Mounting the Display:
1. Position the Surface Mount Bracket in the desired location. Leave approximately 2 behind the unit for cable clearance. 2. Mark the location of the four mounting holes with a pencil. 3. Drill pilot holes for the mounting fasteners (not included in kit). 4. Secure the Surface Mount Bracket using the mounting fasteners. 5. Slip the unit into the Surface Mount Bracket. 6. Tighten the knobs to secure the unit to the bracket.
Installation Installing the Display
The Surface Mount Bracket is designed to be secured using a at head screw. If you use a screw with a countersunk head, you risk damaging the Surface Mount Bracket.

Surface Mount Bracket

Display Installation (Flush Mount)

The Fishnder 100 can be mounted ush against the dash or electronics rack that is no more than 1/4 thick.
Flush Mounting the Display:
1. Remove the Surface Mount Bracket and Knobs. 2 Cut a 4.3W x 4.35H relief hole where the unit will be mounted. 3. Place the display in the relief hole and tape in place. 4. Reinstall the knobs in the unit. Install the surface mount with the cam lobes pointed toward the unit. 5. Rotate the surface mounting bracket forcing the cam lobes to pull the unit tight against the surface. Tighten the knobs.
Pull bracket down until cam lobe contacts surface

Testing the Installation

While it is possible to perform some checks with the boat trailered, the boat should be in the water to properly test the installation. Press the Power button and the Fishfinder 100 Blue should power on. If the unit fails to power on, verify that the wiring adapter is seated properly in the back of the unit, the Red and Black wires are connected to the correct polarity, and the 2-Amp fuse is installed and not blown. If the unit is connected to a power supply that exceeds 18 VDC, a Battery Voltage High warning will be displayed and the unit will turn off. As the unit powers on, it should immediately start showing the bottom. Verify that the unit is not in the simulator mode. If the unit is in the simulator mode, make sure that the transducer is connected to the wiring harness.
Installation Testing the Installation
Simulator Message and Icon
To test the transducer and speed sensor installation, gradually increase the boats speed while checking the unit operation. If the unit displays intermittently or fails to display, verify that the transducer and speed sensor are aligned parallel with the bottom. If necessary, adjust their heights until the unit operates correctly. It may be necessary to make several adjustments to ensure proper operation throughout the speed range. If the signals do not improve, it may be necessary to move the transducer or speed sensor to a different location.
If the Fishnder 100 Blue is in Simulator Mode, the message Simulator On will be displayed along the bottom of the screen. The message will be replaced by the S icon indicating that the unit is running in simulator mode.

Adjustment List

The Range Adjustment is used to set the display depth range. The unit can be set to automatically track the bottom or set to a user-specified depth range.

To select a Depth Range:

1. Highlight Range on the Adjustment Bar. 2. Using the UP or DOWN Arrow, place the pointer at the desired depth range.
To set the unit to automatically track the bottom:
1. Highlight Range on the Adjustment Bar.

Range Adjustment

2. Using the UP or DOWN Arrow, select Auto at the top of the adjustment list.
The Zoom Adjustment is used to quickly select a display zoom scale.
To change the Zoom Scale:
1. Highlight Zoom on the Adjustment Bar. 2. Using the UP or DOWN Arrow, select the desired display zoom level. When a scale other than No Zoom is selected, the Adjustment Bar will display a new selection labeled View.
The View Adjustment is available only when a Zoom Scale other than No Zoom is selected. This setting allows you to select a specific area to view on the display, or allows the unit to automatically select a viewing area based on the bottom.

To change the View:

1. Highlight View on the Adjustment Bar. 2. Press the UP or DOWN Arrows to change the setting.

Zoom Adjustment

To have the unit automatically set a View:
1. Highlight View on the Adjustment Bar. 2. Using the UP or DOWN Arrow, move the slider to the top or bottom of the range, then release and press the Arrow again.

View Adjustment

The Gain Adjustment allows the user to control the sensitivity of the units receiver. This provides some flexibility in what is seen on the display. To see more detail, increase the receiver sensitivity by selecting a higher gain (+). If there is too much detail or if the screen is cluttered, lowering the sensitivity (-) may increase the clarity of the display.

To change the Gain:

1. Highlight Gain on the Adjustment Bar. 2. Using the UP or DOWN Arrows, move the pointer to the desired setting.

Minimum Gain

Normal Gain

Maximum Gain

SETUP MENU
The Setup Menu contains the unit settings that should not require frequent change. The Setup Menu is divided into eight tabs: Chart, Tools, Numbers, Alarms, System, Calibrations, Units, and Memory. Each tab will be described in more detail in this section. To enter and exit the Setup Menu, press the SETUP button on the face of the unit. The first time that the SETUP button is pressed, the Setup Menu will be displayed with the Chart tab highlighted in black. Pressing the UP or DOWN arrow will move the highlight between the tab selections. Press the RIGHT arrow to access the selection fields. Each time the Setup Menu is accessed, the unit will return to the last edited selection field. Press the LEFT arrow key to get back to the tabs.

Chart Tab

Unit Operation Setup Menu: Chart Tab
The Chart tab allows the user to determine the appearance of the scrolling chart display. To access the Chart tab, place the highlight over it using the arrow keys.

Frequency

The Frequency setting allows you to choose a transducer frequency. Frequency refers to the pitch of the sound that the transducer sends and receives. You may choose 200kHz (default), 50kHz or Dual frequency.

Frequency Settings

Continued on page 16

Frequency (continued)

The wide cone angles associated with low frequencies (40 for 50kHz) provide a large coverage area for nding sh. However, this also means that wide cone angles produce less bottom detail and resolution. The narrow cone angles associated with high frequencies (10 for 200kHz) provide better bottom resolution and crisper detail, but therefore cannot show a large coverage area for nding sh. Dual frequency mode combines the improved contour detail and depth readings of the 200kHz frequency with the wide coverage area of the 50kHz frequency.

To select a Frequency:

1. Highlight the Chart tab on the Setup Menu. 2. Highlight the Frequency selection eld and press ENTER. 3. Using the UP or DOWN Arrow, choose 200kHz, 50kHz or Dual and press ENTER. The selected frequency will be displayed in the bottom left-hand corner of the chart.

Fish Symbols

All available information will be displayed.
Suspended targets will display as symbols. In this mode,
background information will still be displayed making sh identication easier.
Same as above with target depth displayed.
Fish Symbols allows the user to determine how the chart will display underwater targets and background information. If Fish Symbols is set to Off, the unit will display all of the available information about the underwater environment. If a fish symbol is selected, the chart will display only the information related to that symbol.

To select a Fish Symbol:

1. Highlight the Chart tab on the Setup Menu. 2. Highlight the Fish Symbol selection eld and press ENTER. 3. Using the UP or DOWN Arrow, select the desired symbol and press ENTER.
Suspended targets displayed as symbols. No background
information will be displayed in this mode.
NOTE: When the frequency is set to Dual, the appearance of the sh symbols will change. Fish returns from the center of the beam will be black, but the sh returns from the edges of the beam will be clear.

Whiteline

Whiteline controls how the unit displays information about the bottom type (hard or soft). With the Whiteline OFF, the bottom return will display as black and contain no information on bottom hardness. With Whiteline ON, the bottom return will become gray-scaled. The degree of gray-scale can be used to determine bottom hardness. See page 33 for more details on this feature.
To change the Whiteline Setting:
1. Highlight the Chart tab on the Setup Menu. 2. Highlight the Whiteline selection eld and press ENTER. 3. Choose On or Off and press ENTER to accept the selection.
Fish Symbols in Dual Frequency Mode

Scroll Speed

You can adjust the speed that the chart scrolls from right to left by using the Scroll Speed selection eld. If you are sitting still or the chart is moving too fast, slowing the scroll rate can be benecial.
To adjust the Scroll Speed:
1. Highlight the Chart tab on the Setup Menu. 2. Highlight the Scroll Speed selection eld and press ENTER. 3. Choose Fast, Medium, Slow or Pause, then press ENTER to accept the selection.

Whiteline Selections

The depth Scale is displayed vertically along the right side of the chart. The depth Scale can be configured to display in four different modes: as an Overlay, in the Corners, with Basic or No Scale.
To change the Scale Setting:
1. Highlight the Chart tab on the Setup Menu. 2. Highlight the Scale selection eld and press ENTER. 3. Choose Overlay, Corners, Basic or No Scale, then press ENTER to accept the selection.

Scale Overlay

Scale Corners

Scale Basic

Scale No Scale
Tools Tab The Tools tab contains the Flasher, Simulator and Noise Reject tools. The Noise Reject and Flasher tools are used to enhance the chart and help in identifying and providing information about an underwater return. The Simulator tool is used to enhance the simulator mode by allowing you to customize the simulated transducer selection. To access the Tools tab, place the highlight over it using the arrow keys.

Flasher

Unit Operation Setup Menu: Tools Tab
With the Flasher tool active, a graphic Flasher representation will be displayed on the far right side of the chart. This graphic Flasher displays structure and bottom returns much the same as a true Flasher. You may find this feature particularly useful when using Fish Symbols.

2. Highlight the Number Size selection eld and press ENTER. 3. Choose Normal or Large and press ENTER to accept the selection.

09/18/01, 2:59 PM

Battery Volts
The Fishfinder 100 Blue can display the current battery voltage on the chart.
To show or hide the Battery Volts display eld:
1. Highlight the Num tab on the Setup Menu. 2. Highlight the Battery Volts selection eld and press ENTER. 3. Choose Show or Hide and press ENTER to accept the selection.
Unit Operation Setup Menu: Numbers Tab

Temperature

The Fishfinder 100 Blue can display the water temperature when equipped with a temperature-sensing transducer. The unit will automatically sense when a temperature-capable transducer is connected. The temperature field can be shown or hidden, regardless of the transducer installed.
To set the Temperature display eld:
1. Highlight the Num tab on the Setup Menu. 2. Highlight the Temperature selection eld and press ENTER. 3. Choose Auto, Show or Hide, then press ENTER to accept the selection.

Battery Volts Selections

Temperature Display Selections
The Fishfinder 100 Blue can display the boats Speed Over Water when equipped with a speed sensor. When set to Auto, the unit will automatically sense when a capable sensor is connected and display the boats speed.
To set the Speed display eld:
1. Highlight the Num tab on the Setup Menu. 2. Highlight the Speed selection eld and press ENTER. 3. Choose Auto, Show or Hide, then press ENTER to accept the selection.

Depth Number

Speed Display Selections
The Depth Number setting refers to how the unit finds the digital depth number that is displayed in the upper left corner of the screen. When set to Auto, the unit will show the most accurate digital depth possible. However, this may cause the chart to update slower as the unit calculates the Auto depth. When set to From Chart (default), the unit finds the digital depth from the same image you see on the chart. The From Chart setting allows the chart to update faster than when the unit is set to Auto and is recommended when using the unit in deep water.

Depth Number Selections

NOTE: In From Chart mode, the Fishnder 100 Blue may not be able to get the digital Depth Number if the bottom is not visible on the chart. Adjust the Depth Range on the Adjustment Bar until the bottom is visible, or change the setting to Auto to get the digital Depth Number.
To change the Depth Number Setting:

The Battery Volts Alarm can be set to warn you when the battery reaches a critical state of discharge.
To activate/deactivate the Battery Volts Alarm:
1. Highlight the Alarm tab on the Setup Menu. 2. Highlight the Battery Volts checkbox. 3. Pressing ENTER will insert or remove a check mark in the checkbox.
Unit Operation Setup Menu: Alarms/System Tabs
To set the Battery Volts Alarm:
1. Highlight the Battery Volts eld and press ENTER. 2. Use the Arrow Keys to input the desired voltage, then press ENTER to accept the setting.
System Tab The Sys tab contains the Contrast, Beeper, NMEA Output and Language setups. To access the Sys tab, use the arrow keys to highlight it.

Contrast

Battery Volts Alarm
The display Contrast may need to be adjusted to compensate for light levels or viewing angles. To adjust the Contrast:
1. Highlight the Sys tab on the Setup Menu. 2. Highlight the Contrast Adjustment eld and press ENTER. 3. Using the Arrow Keys, move the slider right to darken the screen or left to lighten the screen. When nished, press ENTER to accept the setting.
Contrast Adjustment Slider

Beeper

Unit Operation Setup Menu: System Tab
The Beeper eld contains three settings: Off, Alarms Only, and Key & Alarm. To change the Beeper Setting:
1. Highlight the Sys tab on the Setup Menu. 2. Highlight the Beeper eld and press ENTER. 3. Choose Off, Alarms Only, or Key, Alarm, then press ENTER to accept the setting.

NMEA Output

The Fishnder 100 Blue has the ability to output information about Depth, Speed, and Water Temp for display on another NMEA-compatible device. To activate/deactivate the NMEA Output:
1. Highlight the Sys tab on the Setup Menu.

Beeper Selections

2. Highlight the NMEA Output eld and press ENTER. 3. Choose Off or On, then press ENTER to accept the setting.
Language To select a Language:
1. Highlight the Sys tab on the Setup Menu. 2. Highlight the Language eld and press ENTER. 3. Use the Arrow Keys to select the desired language from the list and press ENTER to accept the setting.

NMEA Output Selections

Calibrations Tab The Cal tab contains the Keel Offset and Water Type setups, and a Calibrate Speed function for use when a speed sensor is installed.

Keel Offset

Unit Operation Setup Menu: Calibrations Tab
The Keel Offset eld allows the user to offset the depth reading for a keel or for the draw on a larger vessel. To set a Keel Offset:
1. Highlight the Cal tab on the Setup Menu. 2. Highlight the Keel Offset eld and press ENTER. 3. Use the Arrow Keys enter a new offset, then press ENTER to accept.

Water Type

Since sound waves travel through fresh and salt water at different rates, it is necessary to select the Water Type to ensure accurate depth readings. To change the Water Type:
1. Highlight the Cal tab on the Setup Menu. 2. Highlight the Water Type selection eld and press ENTER. 3. Choose Fresh or Salt, then press ENTER to accept the selection.

Calibrate Speed

The Calibrate Speed eld will be enabled when a speed sensor is installed or when you are in simulator mode. This allows you to calibrate the Fishnder speed to your boats speedometer or to your GPS speed. To calibrate the Speed:
1. Highlight the Cal tab on the Setup Menu. 2. Highlight the Calibrate Speed button and press ENTER. 3. Run your boat, noting your top speed. Stop the boat and press ENTER. 4. With the speed eld highlighted, press ENTER and input your top speed. Highlight OK and press ENTER to nish the calibration.
Transducer at Surface Enter (+) positive number to show depth from bottom of keel Transducer at Bottom of Keel Enter (-) negative number to show depth from surface
Unit Operation Setup Menu: Units Tab
Units Tab The Units tab contains settings for Depth, Temperature and Speed. To access the Units tab, use the arrow keys to highlight it.
The Depth eld can be congured to display in Feet (ft), Meters (mt) or Fathoms (fa). To select a Depth Unit:
1. Highlight the Units tab on the Setup Menu. 2. Highlight the Depth eld and press ENTER. 3. Select Feet, Meters or Fathoms, then press ENTER to accept the new setting.
If equipped with a temperature capable transducer or separate temperature sensor, the unit can display water temperature in Fahrenheit (F) or Celsius (C). To Select a Temperature Unit:
Depth Selections Temperature Selections
1. Highlight the Units tab on the Setup Menu. 2. Highlight the Temperature eld and press ENTER. 3. Select Fahrenheit or Celsius, then press ENTER to accept the new setting.
If equipped with a speed sensor, the unit can display the boats Speed Over Water. The unit can be congured to display Miles-Per-Hour (mh), Kilometers-Per-Hour (kh), or Nautical Miles-Per-Hour (kt). To select a Speed Unit:
1 Highlight the Units tab on the Setup Menu. 2. Highlight the Speed eld and press ENTER. 3. Select Miles/hr, Kilom/hr or Knots, then press ENTER to accept the new setting.

Speed Selections

Memory Tab The Mem tab contains the settings for unit memory and allows you to reset the unit to the factory settings and review the software version. To access the Memory tab, use the arrow keys to highlight it.

Remember

Unit Operation Setup Menu: Memory Tab
The Fishnder 100 Blue can be set to remember its settings each time you power it on. You can set it to remember the settings in the Setup Menu (Setup Only) or the units settings in both the Setup Menu and the Adjustment Bar (All).
To select a Memory Setting:
1. Highlight the Mem tab on the Setup Menu. 2. Highlight the Remember eld and press ENTER. 3. Choose All or Setup Only, then press ENTER to accept the selection.
Factory Setup To restore the Factory Settings:
1. Highlight the Mem tab on the Setup Menu. 2. Highlight the Factory Setup button and press ENTER. 3. Choose OK to reset the unit or Cancel to abort.
Remember Selections Restore Factory Settings

Software Version

The Software Version Button will report information about the current software version in the unit and display the Unit ID Number.
To activate the Software Version Window:
1. Highlight the Mem tab on the Setup Menu. 2. Highlight the Software Version button and press ENTER. 3. Press ENTER to close the information window.
Software Version Information
On the Water Unit Operation and the Chart
Understanding Sonar If you are unfamiliar with sonar, or need help determining what is displayed on the chart, then this section may be for you. This section is intended to help the novice user gain some understanding of how the Fishfinder 100 Blue operates and how it can help improve their fishing productivity.
To understand what the unit is displaying, it is important to have a general knowledge of how the unit works and how it determines what to display. Briefly described, the unit operates by transmitting sound waves toward the bottom of a lake, stream or seabed in a cone shaped pattern. When a transmitted sound wave strikes an underwater object such as the bottom, a piece of structure, or a fish, sound is reflected back to the transducer. The transducer collects the reflected sound waves and sends the data to the unit to be processed and displayed on the chart. The underwater data is displayed on the chart in the order that it is returned: first returnedfirst on the chart. The diagram in the sidebar demonstrates this, showing an underwater scene as it would be displayed on the chart. Generally speaking, if the only thing between the transducer and the bottom is water, the first strong return will come from the bottom directly below the transducer. This first strong return sets the bottom level. Weaker secondary returns provide the detailed data. Stronger returns will display in darker colors, black being the strongest return.