Garmin GPSMAP 175 - Manual (Page 65)

The GPSMAP 175’s main menu page’s track submenu lets you specify
whether or not to record a track plot (an electronic recording of your path)
and define how it is recorded. It also provides an indicator of the track
memory used and selects functions to clear the track memory and start a
TracBack route. The following functions are available:
• Record Mode— lets you select one of three track recording options:
• Off– No track log will be recorded. Note that selecting the ‘Off’ setting
will prevent you from using the TracBack feature.
• Fill– a track log will be recorded until the track memory is full.
• Wrap– A track log will be continuously recorded, wrapping through the
available memory (replacing the oldest track data with new data).
• Interval— defines the frequency with which the track plot is recorded.
Three interval settings are available:
• Time– records track plot based on a user-defined time interval.
• Resolution– records track plot based upon a user-defined variance
from your course over ground. The resolution option is the default
setting and is recommended for the most efficient use of memory and
TracBack performance. The distance value (entered in the interval
field) is the maximum error allowed from the true course before
recording a track point.
• Distance– records track based on a user-defined distance between points.
• Interval Value— defines the distance or time used to record the track log.
• Delete Track?— allows you to clear the track log currently stored in memory.
• Start TracBack?— converts the current track log into an inverted route
and begins route navigation along the track log.
To reset all track options to the default settings:
1. Press O, followed by T.
SETUP MENUS
Track Log Setup
A. The ‘Wrap’ option
will continuously
record a track log,
and replace the
oldest track log
point with new
data. The ‘Fill’
option will record a
track log until the
memory is full.
B. The track submenu’s default settings may be quickly restored from the track
options page.
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175 Manual 7/31/98 3:57 PM Page 61