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Humminbird 128 - page 1
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Humminbird 128 - page 2
INSTALLATION PREPARATION PARTS SUPPLIED PARTS SUPPLIED Before installing your new Humminbird fishfinder, please ensure the following parts are included in the box: • Fishfinder • Transducer with 20’ (6m) of cable and mounting hardware kit • Mounting system an d mounting hardware kit • 6’ (2m) power cable • Publications kit It any of t ...
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Humminbird 128 - page 3
INSTALLATION PREPARATION INSTALLATION OVERVIEW Determining How to Mount the Transducer Your Humminb ird fishfinder includes a standard transducer. This transducer can be mounted on the transom of the boat or bonded to the inside of a fiberglass hull boat. The transom installation, which is the most widely used, places the transducer on the outside ...
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Humminbird 128 - page 4
INSTALLATION PREPARATION ALTERNATE M OUNTING METHODS ALTERNATE TRANSDUCERS AND MOUNTING METHODS Your Humminbird fishfinder comes with everything necessary for installation and operation on most boats. However, there are several situations which may require a different type of transducer. In board boats, wood or metal hulls, and sail boats create un ...
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Humminbird 128 - page 5
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 i t to the address listed in Customer Support. Some transducers may have additional cost. Refer to the Accessory catalog or c ...
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Humminbird 128 - page 6
INSTALLAT ION TRANSOM INSTALLATION Do not begin this transducer installation until you read the Installation Preparation in the Operation Guide. This chapter contains information critical to the correct installation of your transducer. Due to the wide variety of b oat hulls, only general instructions are presented in the installation guide. Each bo ...
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Humminbird 128 - page 7
INSTALLATION TRANSOM INSTALLATION • If the propeller(s) is (are) forward of the transom, it may be impossible to find an area clear from turbulence, and a different mounting technique or transducer type should be considered. Step Two - Drill the Mounting Holes 1. Remove the mounting template from the front of the Operations Manual. 2. Hold the te ...
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Humminbird 128 - page 8
INSTALLATION TRANSOM INSTALLATION Step Four - Mount the Transducer to the Transom 1. Apply silicone sealant to the mounting holes drilled into the transom. 2. Align the transducer assembly with the drilled holes in the transom (Figure 8). 3. U se either a flat head screwdriver, a 5/16" (8mm) hex driver, or a 5/16" (8mm) socket to mount th ...
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Humminbird 128 - page 9
INSTALLATION TRANSOM INSTALLATION Step Six - Route the Cable There are several ways to route the transducer c able to the to the area where the control head will be installed. The most common procedure routes the cable through the transom into the boat. Inside the boat there is often a channel or conduit used for other wiring that the cable can be ...
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Humminbird 128 - page 10
INSTALLATION INSIDE THE HULL INSTALLATION INSIDE THE HULL INSTALLATION Inside the hull installation requires the mount system and control head be installed and operational. See Installing the Control Head for instruction on installing the unit. Inside the hull mountin g generally produces good results in single thickness fiberglass - hulled boats. ...
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Humminbird 128 - page 11
INSTALLATION INSIDE THE HULL INSTALLATION 3. Power up the Control Head. 4. Run the boat at various speeds and water depths while observing the screen on the Control Head. If the unit functions well at low speeds but b egins to skip or miss the bottom at higher speeds, the transducer needs to be moved. If depth performance is required, test the fish ...
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Humminbird 128 - page 12
INSTALLATION CONTROL HEAD INSTALLATION CONTROL HEAD INSTALLATION Step One - Determine Where to Mount Begin the installation by determining where to mount the control head. Consider the following to determine best location: • The cables for power, transducer and temp/speed accessories (if applicable) should be installed first and must reach the mo ...
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Humminbird 128 - page 13
INSTALLATION CONTROL HEAD INSTALLATION and one amp fuse (not inc luded) for the protection of the unit (Figure 21). Humminbird is not responsible for over voltage or over current failures. In order to minimize the potential for interference with other marine electronics a separate power source (such as a second batter y) may be necessary. Step Thre ...
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Humminbird 128 - page 14
INSTALLATION CONTROL HEAD INSTALLATION Step Five - Assembling the Connector Holder 1. Insert the cabl e connectors into the connector holder. The cable connectors are labeled, and there are corresponding labels on the connector holder (Figure 26). The slots for the connectors are keyed to prevent reverse installation, so do not force the connector ...
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Humminbird 128 - page 15
INSTALLATION TEST THE INSTALLATION TEST THE INSTALLATION Testing should be performed with the boat in the water, however you can initially confirm basic operation with the boat trailered. Press POWER once to turn the unit on. There will be an audible chirp when any button is pressed to confirm the button press. If the unit does not power - up, ensu ...
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Humminbird 128 - page 16
TESTING THE INSTALLATION After installation is complete and all connections are made, you are ready to test the installation prior to actual use. Thorough testing should be performed with the boat in water, however, you can initially confirm basic operation with the boat trail e red. Press POWER once to turn the unit on. There will be an audible ch ...
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Humminbird 128 - page 17
SIMULATOR OPERATION The Wide 128 contains a simulator which allows you to use the unit as if you are on the water. The Simulator is invaluable for learning how to operate the many features of the Wide 128. There are two ways to enable the simulator: if the unit is powered off , press and hold the POWER button for approximately 3 seconds until a con ...
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Humminbird 128 - page 18
or sand, the depiction will be thick and less dense. This indicates that much of the signal is absorbed by the soft bottom. If the bottom is rocky or rugged in composition, the depiction is of varying density and textured in appearance. Wave action also affects the bottom depiction. Remember that the information drawn is a distance measurement, so ...
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Humminbird 128 - page 19
CONTROL FUNCTIONS The Wide 128 uses a simple 5 - button keypad for all user input. When any button is pressed, an audible "chirp" confirms the control input. In the event that a particular button has no function or is inappropriate for the situation, an audible "error", or multi ple chirps, will be heard. POWER, powers the Wide ...
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Humminbird 128 - page 20
Once a menu times out, it is still considered the active menu. Pressing MENU will bring up the last used menu. The UP ARROW and DOWN ARROW make adjustments to menu functions. On the left side of every menu there are UP ARROW and DOWN ARROW symbols. The symbols indicate which ARROW button has a function in a particular situation. Either one or both ...
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Humminbird 128 - page 21
To adjust Sensitivity, press MENU repeatedly until the Sensitivity heading is displayed. When the Sensitivity menu appears, use the UP ARROW to increase the sensitivity bi as, or the DOWN ARROW to reduce sensitivity bias. By holding either ARROW button depressed, the unit will sequence through the available settings until you release the button or ...
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Humminbird 128 - page 22
Zoom Zoom is similar to Depth Range in that it controls the range of information displayed in the graphics area of the display. Zoom, however, allows selection of ranges beneath the surface so any area of water between the surface and the bottom can be enlarged to provide more detailed information. By using the full display to show a small area of ...
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Humminbird 128 - page 23
Depth Alarm The Wide 128 contains an audible alarm to warn you of shallow water depths. The alarm is adjustable from 2' to 99' of depth. When the alarm is enabled, an audible alarm is sounded if the water beneath the boat is equal to or less than the selected alarm depth. Upon activation, the alarm sounds continuously for about 5 seconds, ...
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Humminbird 128 - page 24
Fish ID The Fish ID menu controls the method used to portray fish. There are three selections available: ID Off, ID On, ID+. The factory setting is ID+. With ID Off, sonar returns are displayed as "raw" information. There is no interpretation made by the unit. Sel ecting ID Off will also disable the Fish Alarm if selected. ID On enables t ...
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