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405SXSINGLEBEAM
fishfinder
OPERATIONS MANUAL
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THANK YOU THANK YOU FOR CHOOSING YOUR 405SX FISHFINDER, MADE BY TECHSONIC INDUSTRIES, MANUFACTURER OF AMERICA’S #1 NAME IN FISHFINDERS, HUMMINBIRD. HUMMINBIRD HAS BUILT ITS REPUTATION BY DESIGNING AND MANUFACTURING TOP QUALITY, THOROUGHLY RELIABLE MARINE EQUIPMENT. YOUR HUMMINBIRD PRODUCT 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. COMPLETE DETAILS ARE INCLUDED
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TABLE OF CONTENTS Section 1: Installation preparation . . . . . . . . . . . . . . . . . . . 2 Parts Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation Overview . . . . . . . . . . . . . . . . . . . . . . . . . 2 Alternative Transducers and Mounting Methods. . . . . . 4 Beginning Installation . . . . . . . . . . . . . . . . . . . . . . . . . 5 Section 2: USING THE 405SX. . . . . . . . .
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INSTALLATION PREPARATION PARTS SUPPLIED PARTS SUPPLIED Before installing your 405SX, please ensure the following parts are included in the box: • 405SX fishfinder • Transducer with 20' of cable and mounting hardware kit • Mounting system and mounting hardware kit • 6' power cable • Publications kit + Note: The 405SX includes a temperature sensor and the 405SX includes speed and temperature sensors with appropriate hardware and instructions for installation. If any of these items is missing conta
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INSTALLATION PREPARATION INSTALLATION OVERVIEW The transducer converts electrical energy from the transmitter into mechanical pulses or sound waves. The transducer also receives the reflected sound waves and converts them back into electrical signals for display on the control head. It should be installed in contact with the 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
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INSTALLATION PREPARATION ALTERNATE TRANSDUCERS AND MOUNTING METHODS Inside the hull installations require no holes to be drilled into the boat and through experimentation, high-speed operation comparable to transom mounting can be achieved. Two part, slow cure epoxy is required to glue the transducer in place. ALTERNATE TRANSDUCERS AND MOUNTING METHODS The 405SX comes with everything necessary for installation and operation on most boats. However, there are several situations which may require a
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INSTALLATION PREPARATION BEGINNING INSTALLATION BEGINNING INSTALLATION Now that you have determined the transducer mounting method, you can begin installation of the 405SX. The fold out installation guide included provides detailed step by step instructions for installation of the control head and transducer. For transom mount transducer installations, you will need the mounting template at the back of this manual. In addition to the parts included you need the following for installation and ope
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USING THE 405SX 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. Your Humminbird uses the reflected signal to interpret location, size
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USING THE 405SX SIMULATOR OPERATION the DOWN ARROW until “Simulator” is highlighted. When the screen times out, the unit will be in simulator mode. When in simulator operation, the 405SX responds to control inputs as if it is in actual operation, so feel free to experiment, or to customize the unit for your particular operation. To exit Simulator mode, power the unit off. FEATURE MEMORY If your 405SX is installed with a transducer connected, any changes you make to the set-up or User Options (se
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USING THE 405SX WHAT YOU SEE ON-SCREEN Temperature/Speed. The initial screen layout takes one of two basic forms depending on whether the optional Temp/Speed accessory is installed. Figure A shows the default view when the Temp/Speed accessory is installed. Figure B shows the default view when the Temp/Speed accessory is not installed. Depth. The digital depth Figure A number shows the water depth directly beneath the transducer location. Depth Range. The depth range is shown to the right of the
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USING THE 405SX WHAT YOU SEE ON-SCREEN This range is selected so the bottom representation is typically shown about ²⁄₃ down the display. Bottom. The graphic depiction of the bottom provides the user with an effective tool for understanding the composition of the bottom. The FSTN type display uses 4 discrete levels of gray to indicate the intensity of the returned sonar signal. The 405SX can display even the smallest sonar returns with light gray pixels. Larger returns are displayed with darker
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USING THE 405SX WHAT YOU SEE ON SCREEN Thermoclines. Thermoclines are sharp differences in water Thermocline Second Return temperature. These are easily identified by the continuous nature of the return. Second Returns. When a sonar signal is reflected off the bottom back to the transducer, there is often enough energy left in the signal to be reflected off the surface of the water back to the bottom a second time. Second returns appear as a slightly weaker bottom representation exactly twice
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USING THE 405SX WHAT YOU SEE ON SCREEN repeat the same image it is often necessary to travel the same speed and direction over the location where the structure was originally located. The 405SX is also capable of showing layers of water having different temperatures. These temperature differences, called thermoclines, appear at different depths, depending on current conditions. A thermocline typically appears as a continuous band of light gray moving across the display at the same depth. Thermoc
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USING THE 405SX CONTROL FUNCTIONS CONTROL FUNCTIONS The 405SX uses a simple six button keypad for all user input. Press any button and an audible “chirp” confirms the control input. If a button has no function or is inappropriate for the situation, an audible “error” is heard. The unit sounds multiple chirps. Power. The Power button powers the 405SX up for normal operation. When the unit is on, POWER turns the unit off. POWER can also be used to go directly into Simulator mode. To enter simulato
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USING THE 405SX CONTROL FUNCTIONS 2D View When using the standard transducer, with the optional speed/temp sensor connected, the VIEW button toggles the display between the full-screen 2D View, the Chart View and the Large Digital Readout View. The Chart View, shows only the digital depth readout, leaving more screen area for fish location and bottom depiction. Menu. MENU displays a menu Large Digit View on-screen for adjustment. In normal operation, pressing MENU repeatedly cycles through all
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USING THE 405SX MENU FUNCTIONS DOWN ARROW symbols. The symbols indicate which ARROW button has a function in a particular situation. Either one or Menu both ARROW buttons can be used to adjust the menu function. A hollow ARROW symbol means the corresponding ARROW button has no function. Pressing that button will result in no adjustment and the “error” audible will be heard. A solid ARROW symbol means the corresponding ARROW button can be used to affect the menu adjustment. Abbreviated Menu. The
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USING THE 405SX MENU FUNCTIONS Several of the menus are multi-step. In some situations if an adjustment is made, additional options become available for further adjustment. Examples of these multi-step menus are Depth Range, Depth Alarm and Zoom. See the detailed description of each function for further explanation. Menu Functions Sensitivity. The Sensitivity function controls the sensitivity of the sonar receiver. The 405SX automatically adjusts the level of receiver sensitivity based on a numb
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USING THE 405SX 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 on-screen 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. The top
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USING THE 405SX MENU FUNCTIONS range setting. The unit no longer adjusts the Depth Range to the most appropriate range for bottom display. Often, the bottom may not be visible on-screen. The digital depth readout always determines the depth of the bottom, even if it is not visible on-screen. 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
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USING THE 405SX MENU FUNCTIONS “Automatic” Zoom is especially helpful when looking for structure or bottom detail. The “Automatic” Zoom keeps the bottom in view even in quickly changing terrain. “Manual” Zoom provides detailed information of any area from the surface to the bottom. In “Manual” Zoom, the Zoom range does not move as the terrain changes. To operate Zoom, press MENU repeatedly until the Zoom menu is on-screen. Three options are available: “Off” (Factory Setting), “Auto” (Automatic b
