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The speedometer is calibrated at the factory however, significant variations can occur due to changes in installations. The speedometer can be easily calibrated to a known reference such as a radar gun, measured course, or GPS. When the unit is in digital speed display mode, push and release M to put the speedometer in the calibration mode. Push and hold M down for at least two seconds, the LCD will show “AdJUST.” Calibration Display CORC117 Run the boat at a constant 30 MPH as measured by the GPS, radar, or closed course. Adjust the speedometer pointer by pressing s and t until the speedometer matches the known speed. When finished, press M to exit the adjustment screen. The operator has the option of saving or canceling the adjustment procedure. The options can be selected using s and t. To save the calibration setting, press and hold M for two seconds when the display shows “SAVE.” Save Display CORC118 4-23 Section 4 To exit the adjustment procedure without saving, press and hold M for two seconds when the display shows “NO SAVE.” Multiple runs in opposite directions may be necessary to compensate for errors due to water currents. No Save Display CORC119 Depth Sounder Function To display depth information on the LCD push and release the M until the display shows the depth. The depth sounder is turned on and off with the ignition switch. The depth sounder can also be turned off at any time, while in depth display mode, by pressing and holding M while the depth sounder counts down a three second delay. The depth display will then indicate “OFF.” Off Display CORC120 Press and hold the M to turn the depth sounder back on. 4-24 Controls and Indicators When there are no alarm conditions, the water depth is displayed. If the signal is weak or lost, or there is no transducer connected, the display will alternate between the last known depth and four horizontal bars. Depth Display CORC121 Canceling Depth Alarms A depth alarm warning can be temporarily canceled by pressing both s and t on the speedometer, simultaneously. After one minute, the alarm will resume if the condition that caused the alarm is not corrected. The operator can cancel the alarm as many times as necessary, until the condition is corrected. The depth alarm warning will replace any information on the LCD screen. Canceling the alarm will restore the LCD to the original display. If not already in the depth mode, this would be a good time to switch to it (using M) in order to monitor water depth. Depth Sounder Alarm Settings NOTICE The speedometer display must be in the depth display mode to change settings. Use the M to scroll to the depth display. To change the depth sounder alarm settings M must be held down until the depth display changes to the alarm settings mode. There are four menus in the alarm settings mode. Pressing and releasing the mode switch quickly will cycle through the different options. 4-25 Section 4 Shallow Alarm This alarm sounds when the water depth equals or is less than the set value. The display will show “S X.X” which is the current setting for the shallow alarm. Pressing s and t will change the shallow setting. Shallow Display CORC122 Holding M in for two seconds will save the new shallow setting and change the display back to the normal depth mode. Set to zero to disable the alarm. Deep Alarm This alarm sounds when the water depth equals or is greater than the set value. The display will show “d XX.X” which is the current setting for the deep alarm. Deep Display CORC123 Pressing s and t will change the deep setting. Holding M in for two seconds will save the new deep setting and change the display back to the normal depth mode. Set to zero to disable alarm. 4-26 Controls and Indicators Keel Offset Adjust depth sounder to measure depth below keel or drive instead of sensor. The display will show “K X.X” which is the current setting for the keel offset. Pressing s and t will change the keel-offset setting. Keel Display CORC124 Holding M in for two seconds will save the new keel offset setting and change the display back to the normal depth mode. The keel offset is normally a negative number. Units Change the unit of measure. This display will show “UNIT FT” for feet (default), “UNIT FA” for fathoms, or “UNIT M” for meters. Pressing s and t will cycle through the choices. Pressing and holding the M will save the units shown in the display and change the display back to the normal depth mode. 4-27 Section 4 Feet (default) METERS FATHOMS CORC125 Tachometer/Fuel Monitor The Tachometer/Fuel Monitor provides both the functions of a tachometer and a fuel – engine monitoring system. The analog tachometer looks like a standard analog device but is actually a digital instrument. On smaller pointer movements you may occasionally see the pointer moving in the one-third degree “steps” that represent the accuracy of the instrument. The tachometer LCD screen displays several user selected functions. The displayed data includes: “engine ...

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