Garmin GTR 225 Installation Manual

Also see for GNC 255: Pilot's guide

Contents

Garmin GTR 225 Installation Manual Manual pdf 56 page image

GTR 225/GNC 255 TSO Installation Manual 190-01182-02Page 6-2 Rev. B6.3 Connector Engagement CheckPrior to configuration and checkout of the GTR/GNC, the connector engagement should be checked asdescribed below:1. Turn on the avionics master switch (if installed).2. Place the GTR/GNC in the rack and engage the cam mechanism.3. Turn the Allen screw of the locking cam (located on the lower left side of the unit) slowlyclockwise until the GTR/GNC just powers on. A T-handle can be used for this, but ensure that thescrew is not over-tightened.4. Count the number of complete revolutions the Allen screw can be turned until it cannot turn anymore. Take care not to over-tighten. Three turns is the minimum for proper installation. If fewerthan three turns are possible, the mounting rack should be moved aft (toward the pilot) such thatthe aircraft panel does not obstruct the unit from properly engaging in the rack.6.4 Configuration Mode OperationsThe configuration pages shown in this section reflect main software version 2.00. Some differences inoperation may be observed when comparing the information in this manual to later software versions.Configuration mode is used to configure the GTR/GNC settings for each specific installation. To accessconfiguration mode, remove power from the GTR/GNC. With the GTR/GNC turned off, press and holdthe ENT key and apply power to the GTR/GNC by turning the COM volume knob clockwise. Release theENT key when the display activates and ‘Garmin’ appears on the screen.The first page displayed is the Config Mode page. While in configuration mode, pages can be selected byturning the outer knob to select the high-level page, turning the inner knob to select the subpage, and thenpressing the ENT key to select the desired page. There are five main page headings: SYS, NAV, COM,AUD, and LOG. From the main heading, turn the inner knob to select the desired subpage and then pressthe ENT key. See Figure 6-1.Figure 6-1. Configuration Mode Home Page