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Units Tab— defi nes units of measure for Elevation, Depth, Distance and Speed, Temperature and
Direction Display.
• Elevation— select Feet or Meters
• Depth— select Feet (ft), Fathoms (fa) or Meters (mt)
• Distance and Speed— select Nautical (nm, kt, ft), Statute (mi, mh, ft) or Metric (km, kh, mt)
• Temperature— select Fahrenheit (°F) or Celsius (°C). This setting is only available when the GPSMAP
176 is interfaced with a depth fi nder, and the transducer must have a temperature sensor in the water.
• Direction Display— select Numeric Degrees or Cardinal Letters. This setting is used in all fi elds that
relate to direction throughout the unit.
Communication (Comm) Tab— lets you control the input/output format used when connecting
your GPSMAP 176 to external NMEA devices, a DGPS beacon receiver, a personal computer, another
GARMIN GPSMAP 176, etc. Note: If a DGPS receiver is used, WAAS capability will automatically be
turned to ‘Off’.
• Garmin Data Transfer— the proprietary format used to upload/download MapSource data, exchange
waypoint, route, track, almanac, and proximity data with a PC or another GARMIN GPSMAP 176.
When you select ‘Garmin Data Transfer’, there are 11 Transfer Modes to choose from: Host, Request
Almanac, Request Proximity, Request Routes, Request Tracks, Request Waypoints, Send Almanac,
Send Proximity, Send Routes, Send Tracks and Send Waypoints.
• Garmin DGPS— used to connect the GPSMAP 176 with a Garmin DGPS beacon receiver.
• NMEA In/NMEA Out— supports the input/output of standard NMEA 0183 version 2.3 data, and
sonar NMEA input support for the DPT, MTW and VHW sentences.
• Text Out— allows the unit to output simple text data that includes, data, time, position and velocity.
The Baud can be set to 1200, 2400, 4800, or 9600bps.
• RTCM In— allows Differential GPS (DGPS) input using a standard RTCM format.
• RTCM In/NMEA Out— allows Differential GPS (DGPS) input using a standard RTCM format and also
provides NMEA 0183 version 2.3 output.
Units Tab
Main Menu: Units/Comm Tabs
Communication Tab
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