7.5 CalibrationBefore first use calibration procedures must becarried out to ensure optimum performance of theinstrument with the vessel.The calibration procedures are:• User calibration• Intermediate calibration• Dealer calibration7.6 User Calibration - i50 SpeedUser calibration options include:• Units for speed readings — Assigns the unit ofmeasure used for speed related readings.• Resolution for speed readings — Assigns thelayout of speed related readings.• Units for log readings — Assigns the unit ofmeasure used for log related readings.• Units for water temperature — Assigns the unit ofmeasure used for temperature related readings.• * Correct speed reading — Assigns an offset tothe speed reading.• Timer buzzer — Switches the buzzer warning onand off for the timer.Note: * These settings are only available ondisplays when the instrument status is set toMaster (see Intermediate Calibration for details ofchanging the display to be Master or Repeater).Accessing the User Calibration MenuDuring normal operation:1. Press and hold the Speed and Trip buttons atthe same time for approximately 2 seconds, untilthe User Calibration page is displayed.+D12426-210152025303540455055 60 52S pe e d TripNote: The User Calibration page will time-out after8 seconds of inactivity.2. Use the Speed button to cycle through theavailable settings.Note: To exit the User Calibration pages at anytime, press and hold the Speed and Trip buttonsat the same time for approximately 2 seconds.Selecting the unit of measure for speedreadingsFrom the User Calibration Menu:1. Press the Speed button until the Speed Unitspage is displayed (1 press from the UserCalibration entry page).D12427-2S pe e d2. Use the Timer or Reset buttons to select therequired unit of measurement for speed readings.The units of measure available for speedreadings are:• KTS — Knots (default)• MPH — Miles Per Hour• KMH — Kilometers Per HourNote: To exit the User Calibration pages at anytime, press and hold the Speed and Trip buttonsat the same time for approximately 2 seconds.46 i50