Operations Manual ®
THANK YOU Thank you for choosing Humminbird, America’s #1 name in fishfinders. Humminbird has built its reputation by designing and manufacturing top-quality, thoroughly reliable marine equipment. Your Humminbird is designed for trouble-free use in even the harshest marine environment. In the unlikely event that your Humminbird does require repairs, we offer an exclusive Service Guarantee - free of charge during the first year after purchase, and available at a reasonable rate after the one-year period.
TABLE OF CONTENTS Section 1: INSTALLATION PREPARATION . . . . . . . . . . Parts Supplied . . . . . . . . . . . . . . . . . . . . . . . . . Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Overview . . . . . . . . . . . . . . . . . . . . Alternative Transducers and Mounting Methods. Transducer Exchange . . . . . . . . . . . . . . . . . . . . Beginning Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION PREPARATION PARTS SUPPLIED PARTS SUPPLIED Before installing your 105SX, please ensure the following parts are included in the box: • • • • • • 105SX fishfinder Transducer with 20' (6m) of cable and mounting hardware kit Mounting system and mounting hardware kit 6' (2m) power cable Publications kit Temperature Probe If any of these items is missing, call our Customer Support Hotline.
INSTALLATION PREPARATION INSTALLATION OVERVIEW surface of the water in an area that has smooth water flow - usually on the transom of the boat. There are several mounting options for the transducer. Review the following section to determine the method that works for you and your boat. Determining How to Mount the Transducer The 105SX includes a model XHS- 6-24 transducer. This transducer can be mounted on the transom of the boat, or bonded to the inside of a fiberglass hull boat.
INSTALLATION PREPARATION ALTERNATE TRANSDUCERS AND MOUNTING METHODS ALTERNATE TRANSDUCERS AND MOUNTING METHODS The 105SX comes with everything necessary for installation and operation on most boats. However, there are several situations which may require a different type of transducer. Inboard boats, wood or metal hulls, and sail boats create unique transducer mounting needs. Alternate transducers and mounting methods are detailed below.
INSTALLATION PREPARATION TRANSDUCER EXCHANGE TRANSDUCER EXCHANGE Other transducers are available as replacements for the standard transducer. You may exchange your new and unassembled transducer for another type by returning it to the address listed in Customer Support. Some transducers may have additional costs. Refer to the Accessory catalog or call Customer Support for information.
USING THE 105SX HOW SONAR WORKS HOW SONAR WORKS Your Humminbird unit uses sonar to locate and define underwater objects, define the bottom terrain, as well as determine distance. Sonar technology is based on sound waves. Your Humminbird unit sends out a sound wave signal. With this signal it determines distance by measuring the time between the transmission of the sound wave and when the sound wave is reflected off an object.
USING THE 105SX SIMULATOR OPERATION SIMULATOR OPERATION The 105SX contains a simulator that allows you to use the unit as if you are on the water. The simulator is invaluable for learning how to operate the 105SX. There are two ways to start the simulator. If the unit is powered off, press and hold the POWER button for approximately three seconds until you hear a continuous chirp. The simulator can also be started by selecting the Simulator option on the startup screen after you power-up the unit.
USING THE 105SX WHAT YOU SEE ON-SCREEN If you are using the 105SX in Simulator when no transducer is connected, any selected options are lost when the unit is powered off. The 105SX will return to Factory Settings, or options selected when last used with a transducer, if no transducer is connected. IMPORTANT: A transducer must be connected to the 105SX in order to retain user settings selected when in simulator mode. If no transducer is detected, the unit defaults to pre-selected options when powered off.
USING THE 105SX WHAT YOU SEE ON-SCREEN When in Auto mode, the horizontal line at the top of the screen is the “zero line,” representing the surface of the water. Occasionally there is a gap in this line. This gap indicates the unit is updating the display even if the bottom is not visible onscreen, or if the bottom information is not changing.
USING THE 105SX WHAT YOU SEE ON SCREEN Structure. Structure is defined as any object physically attached to the bottom. The sonar configuration of the 105SX is optimized to give the most accurate depiction of bottom structure possible. Grass, trees, stumps, wrecks or other debris are accurately displayed, however the depiction of these objects varies with boat speed and direction.
USING THE 105SX CONTROL FUNCTIONS different species of fish have different sonar characteristics, so it is not always possible to distinguish fish size between varying species. The signal intensity is “normalized” for depth so a small fish close to the boat does not appear as a large fish symbol. ID+ Fish Depth ID+ adds an additional piece of information to help the user locate fish. On selected fish symbols, the digital depth of the designated fish is drawn to help locate the fish vertically.
USING THE 105SX CONTROL FUNCTIONS When powering the unit from a battery such as in portable applications, you can prolong the battery life by using the backlight at a minimum. The three lower buttons, MENU, UP ARROW, and DOWN ARROW work together to control the 105SX menu-controlled user functions. Menu. MENU displays a menu onMenu Heading screen for adjustment. In normal operation, pressing MENU repeatedly cycles through all available menu headings.
USING THE 105SX CONTROL FUNCTIONS Menu Layout. All menus use the same basic layout. The heading at the top describes the menu function. The UP ARROW and DOWN ARROW symbols to the left of the menu indicate which buttons are available for adjustment. In menus that have several possible settings, a range of adjustment indicator shows the total range available and the current setting. Within the menu are the options available. The selected option or current setting is highlighted in the black box.
USING THE 105SX MENU FUNCTIONS Menu Functions Sensitivity. The Sensitivity function controls the sensitivity of the sonar receiver. The 105SX automatically adjusts the level of receiver sensitivity based on a number of factors including the depth of the water and the level of noise present. Noise can be caused by other electronic devices, engines, trolling motors, propeller cavitation and hydrodynamic flow among others.
USING THE 105SX MENU FUNCTIONS After an adjustment is made, the menu disappears and the new sensitivity setting is in affect. If additional time is needed to study a menu, press and hold the MENU button and the menu will remain onscreen indefinitely. If you need to make an additional adjustment, press the UP ARROW or DOWN ARROW button. Depth Range. The Depth Range function controls the vertical distance displayed on the graphic area of the display. There are nine depth ranges available.
USING THE 105SX MENU FUNCTIONS Using manual Depth Range control, you can view sonar information from the area near the surface in greater detail. To return to automatic Depth Range control, press the MENU button until the Depth Range menu appears onscreen and use the UP ARROW to select AUTO. Zoom. Zoom is similar to Depth Range because it controls the range of information displayed on screen.
USING THE 105SX MENU FUNCTIONS The Zoom range is shown on the left side of the screen and full range information is shown on the right side of the display. Zoom can either operate automatically, in which the Zoom range is constantly adjusted to show the bottom, or manually, in which the user controls the location of the Zoom range. Automatic Zoom is especially helpful when looking for structure or bottom detail.
USING THE 105SX MENU FUNCTIONS Depth Alarm. The 105SX contains an audible alarm to warn you of shallow water depths. The alarm is adjustable to depths of 3' to 99' (30m). When the alarm is enabled, an audible alarm sounds if the water beneath the boat is equal to or less than the selected alarm depth. The alarm sounds continuously for about five seconds, and then intermittently to remind you that you are still in shallow water. Fish Alarm.
USING THE 105SX MENU FUNCTIONS Bottom Black. There are two selections available: Off and On. The factory setting is Off. With this setting, the 105SX displays the bottom using Structure ID. This allows you to determine the texture and relative hardness of the bottom. Selecting Bottom Black “ON” causes the unit to blacken in the display below the bottom. This gives the user easiest recognition of the bottom location, even from a great distance.
USING THE 105SX MENU FUNCTIONS symbols on-screen. In this case smaller sonar returns will be depicted as fish symbols. This is useful for identifying many smaller sonar returns (such as baitfish) as fish symbols. Decreasing the value to a number less than zero shows fewer fish symbols on-screen. In this case smaller sonar returns are disregarded. This is useful for eliminating many small sonar returns when seeking larger species of fish. The 105SX remembers this selection even when the unit is powered off.
ADVANCED FEATURES USING THE DIAGNOSTIC FEATURE voltage from your boat’s electrical system. The time, speed and distance calculations are useful for tracking your progress on a trip. The input voltage is useful for determining the condition of the charging system of the boat. When used in a portable application or whenever the 105SX is operated from a battery source, the voltage number can be used to determine battery life. The 105SX will operate at voltages from 10 to 20 VDC.
MAINTENANCE AND WARRANTY MAINTENANCE especially helpful in diagnosing input voltage problems. The present input voltage is displayed. If voltage fluctuations or power supply in excess of 20 VDC or less than 10 VDC is suspected, use the diagnostic screen to confirm input voltage. Often, small outboard motors do not effectively regulate voltage when operated at high engine speeds. Use Diagnostic while running the boat at high speeds to show the voltage gain.
MAINTENANCE AND WARRANTY TROUBLESHOOTING •If your boat remains in the water for long periods of time, algae and other marine growth can reduce the effectiveness of the transducer. Periodically clean the face of the transducer with liquid detergent. Pivoting the transducer up in the bracket may allow better access for inspection or cleaning. •If your boat remains out of the water for a long period of time, it may take some time to wet the transducer when returned to the water.
MAINTENANCE AND WARRANTY TROUBLESHOOTING Check the power connection to the 105SX. It is possible to force the power cable connector into the cable holder incorrectly. If the connector is reversed, the unit will not work. Examine the contacts on the back of the unit to ensure there is no corrosion. Finally, ensure the unit is firmly seated on the mount. The electrical contacts are not made until the unit is fully seated. Ensure the metal cable retainer is properly installed in the mount.
MAINTENANCE AND WARRANTY TROUBLESHOOTING the transducer is connected to the unit through a switch, temporarily connect it directly to the unit and try again. If none of these items identifies an obvious problem, the transducer itself may be the problem. Be sure to include the transducer if returning the unit for repair. 4. When in very shallow water, I get gaps in the bottom reading and inconsistent digital depth indication. The 105SX will work reliably in water 3', or deeper.
MAINTENANCE AND WARRANTY WARRANTY can be caused by other electronic devices. Turn off any nearby electronics and see if the problem goes away. Noise can also be caused by the engine. If engine noise is causing the interference, the problem will intensify at higher RPMs. Increase the engine speed with the boat stationary to isolate this cause. Propeller cavitation can appear as noise on-screen.
MAINTENANCE AND WARRANTY SERVICE POLICY SERVICE POLICY This Service Policy is valid in the United States only. This applies to Humminbird units returned to our factory in Eufaula, Alabama, and is subject to change without notice. All repair work is performed by factory-trained technicians to meet exacting factory specifications. Factory serviced units go through the same rigorous testing and quality control inspection as new production units.
MAINTENANCE AND WARRANTY CUSTOMER RESOURCE CENTER CUSTOMER RESOURCE CENTER If you have any questions, call our Humminbird Customer Resource Center Hotline: 1-334-687-0503 Throughout the U.S. and Canada, hours are Monday-Friday, 8:15 a.m. to 5:00 p.m. Central time. Or visit our web site: www.humminbird.com for Product Support and troubleshooting guides.
MAINTENANCE AND WARRANTY SPECIFICATIONS Operating Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 kHz Power Output . . . . . . . . . 2000 Watts (Peak to Peak) - 250 Watts (RMS) Area of Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24° at -10 db Power Requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 20 VDC Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FSTN LCD LCD Matrix . . . . . . . . .
