[. . . ] GPSMAP 172/172C chartplotting receiver owner's manual © 2004-2007 Garmin Ltd. (913) 397. 8200 or (800) 800. 1020 Fax (913) 397. 8282 Garmin (Europe) Ltd. Liberty House, Hounsdown Business Park, Southampton, Hampshire, SO40 9RB UK Tel. +44 (0) 870. 8501241 (outside the UK) 0808 2380000 (within the UK) Fax +44 (0) 870. 8501251 Garmin Corporation No. [. . . ] Use the ARROW KEYPAD to highlight the first field under the word "Waypoint" and press ENTER . (You may also choose from other points, such as Cities, Tide Stations, etc. from this list. ) Select a waypoint from either the "By Name" or "Nearest" list and press ENTER. (See page 37 for searching for waypoints by name. ) Choose the type of point you want to add to the route. 6. On the Point Review or Waypoint Review page, `OK' is automatically highlighted. Choose `Show Map' and press ENTER to view the point on the map, then press QUIT to return to the Waypoint/ Point Review page. With `OK' highlighted, press ENTER to add the point to the route. Press QUIT to return to the Route List page. Following a Route Once a route has been created, it can be activated and used for navigation with the NAV key. A route may be followed in the same sequence as it was originally created, or inverted and followed from the end point back to the beginning point. To activate and follow a route: Choose a waypoint from either the `By Name' or `Nearest' tab list. 1. From any page, press the NAV key, then using the ARROW KEYPAD, highlight `Follow Route' and press ENTER. (If you highlight a route from the Route List or Route Review page and press NAV, the window automatically displays, `Follow <the route name>'. ) 2. (`Activate' uses the route as is, `Invert and Activate' reverses the route then activate it. ) Reference Route List Page To deactivate (stop navigation) of a route: 1. Press the NAV key, highlight `Stop Navigation' and press ENTER. Route List Page The GPSMAP 172/172C Route List page (`Route' tab of the Main Menu) displays all the routes currently stored in memory, along with a descriptive name for each route. By pressing MENU while on the Route List page, the following menu options appear: `New Route' (page 44), `Copy Route', `Delete Route', or `Delete All'. To select and follow a route: 1. On the Route List page, use the ARROW KEYPAD to highlight the desired route and press NAV. Highlight `Activate' or `Invert and activate' and press ENTER. If you highlight a route name from the Route List and press NAV, the name automatically appears. To deactivate (stop following) the route: 1. Press the NAV key, highlight `Stop Navigation' and press ENTER. To copy or delete a route: 1. From the Route List, using the ARROW KEYPAD, highlight the route you want to copy or delete and press MENU. Choose either `Copy Route' or `Delete Route' and press ENTER and with `OK' highlighted, press ENTER again to confirm a deletion. Copy uses the same route name with an additional number, starting at 1, at the end of the route name. To delete all routes: 1. With `OK' highlighted, press ENTER again to confirm. Route List Options Menu Reference Route Review Page Route Name Data Fields Route Points Data Totals Route Review Page Once you have created a route, the Route Review page allows you to edit a selected route. To access the Route Review page: 1. Highlight the name of the route you wish to review and press ENTER. The Route Review page also allows you to enter a 15-character name for any listed route. [. . . ] 703-684-4481 (Info Only) 703-836-4229 FAX www. rtcm. org Connecting the Power/Data The power/data cable connects the GPSMAP 172/172C to a DC system and provides interface capabilities for connecting external devices. The color code in the diagram below indicates the appropriate harness connections. For wiring the GPSMAP to a GSD 20 Sonar Module, refer to the "GSD 20 Installation Guide" (190-00255-00). (red) 10-35 vDC Note: During a typical installation, only the Red and Black wires are used. The other wires do not have to be connected for normal operation of the unit. [. . . ]