Operation Manual
Table Of Contents
- GPSMAP 172/172C
- Introduction
- Getting Started
- Keypad Usage
- Selecting Options
- Entering Data
- Initializing the Receiver
- Power On/Screen Backlighting
- Simulator Mode
- Main Pages/Map Page
- Map Cursor
- Marking Waypoints
- Using the NAV Key
- Simulated Tour
- Reviewing/CreatingMap Waypoints
- Compass Navigation Page
- Highway Page
- Active Route Page/Main Menu Page
- Deleting Waypoints/Powering Off Unit
- Reference
- Map Page
- Map Page: Cursor
- Map Page: Options
- Compass Page
- Highway Page
- Highway Page Options
- Creating Waypoints
- Reviewing/Editing Waypoints
- Waypoint Lists
- Going to a Destination
- TracBack Navigation
- MOB: Man OverBoard
- Creating Routes
- Creating a Route/Following a Route
- Route List Page
- Route Review Page
- Editing Routes
- Active Route Page
- Find Key
- Find Options
- Main Menu Tabs
- Main Menu:GPS Tab
- Main Menu:Tide Tab
- Main Menu: Trip/
- Main Menu: Track Tab
- Main Menu: DSC Tab
- Main Menu: DSC/Card Tabs
- Main Menu: Temp Tab/Setup Tab
- Main Menu: Comm Tab
- Main Menu: Alarm Tab
- Appendix
- Index
Compass Page
The GPSMAP 172/172C features two different navigation pages: Compass and Highway. Whenever
a NAV goto, Follow Track (TracBack), or Follow Route have been activated, the GPSMAP 172/172C’s
Compass Page guides you to your destination with digital readouts and a graphic compass display, which
includes a bearing pointer. Use this page (instead of the Highway Page) when your desired path may be
varied in direction. The middle of the page features a rotating ‘compass ring’ that shows your course over
ground (track) while you’re moving. Your present course over ground is indicated at the top of the compass
ring. A bearing pointer arrow, in the middle of the
compass ring, and a bearing ‘bug’ indicator on the
outside of the compass ring, indicate the direction of the destination (bearing) relative to the course over
ground. The compass ring and pointer arrow work independently to show—at a glance—the direction of
your movement and the direction to your destination. For instance, if the arrow points up, you are going
directly to the waypoint. If the arrow points any direction other than up, turn toward the arrow until it
points up, then continue in that direction.
The bearing pointer, bearing bug and/or compass ring may point in various directions
when you are stationary or at very low speeds. Once you start moving, the pointer is
correct.
The GPSMAP 172/172C’s Compass Page features a menu page that provides access to layout and
data field options. The data window, located at the top of the page, provides a user-selectable layout of
various types of useful data. Each data field may be configured to display several data options.
To display the Compass Page options:
1. Press MENU.
To select a menu option:
1. Use the ARROW KEYPAD to highlight the desired option and press ENTER. For detailed instruc-
tions on changing the data fields and layout of the Compass Page, see pages
25-26
.
For detailed instructions on changing the data fields and layout of the Compass Page, see pages 25-26.
Destination
Data Fields
Compass
Ring
Bearing
Pointer
Bearing
‘Bug’
27
Reference
Compass Page