Page 6-16 GTN 625/635/650 TSO Installation ManualRev. C 190-01004-026.7 GTN Options PageThe following sections describe pages that are accessed from the GTN Options page as shown inFigure 6-19. To access the GTN Options page, touch the ‗GTN Options‘ key from the ConfigurationMode page.Figure 6-19. GTN Options Page6.7.1 TAWS Configuration Page (For TAWS Units Only)Access the TAWS Configuration page, as shown in Figure6-20 by touching the ‗TAWS‘ key on the GTN Optionspage. This page allows you to select the TAWSconfiguration, configure the TAWS audio, and select theairport criteria.When the optional TAWS feature is enabled, the GTN willprovide Class B TAWS functionality. This section describeshow to activate the TAWS feature in the GTN.NOTEIf enabling TAWS on the GTN, the audio outputfrom the GTN must be connected to an unswitchedand unmuted input on the audio panel. Turn off theGTN prior to the following steps.1. Remove the database SD card from the SD card slot and insert a TAWS Enablement Card P/N010-00878-01.2. Enter configuration mode by applying power (closing the circuit breaker) to the GTN whileholding the ‗Home‘ key.3. Go to the TAWS page from the GTN Options page. Touch the ‗TAWS B‘ key next to ‗TAWSConfiguration.4. A window will appear with ‗Enable TAWS-B? This will consume a feature unlock key whenselected.‘ Touch ‗Yes‘ to enable TAWS-B.5. When the TAWS feature is activated, the TAWS B key will be lit green as shown inFigure 6-20.Figure 6-20. TAWS Configuration Page
