MoTeC GPS-BL1 - Manual (Page 6)

4 Using the GPS
Loss of signal may occur when the satellites are obscured by trees, buildings
or a bridge. The GPS will take a second or two to recover from this situation.
Data Analysis
GPS data analysis requires i2 version 1.02 or higher.
All GPS channels (speed, heading, altitude etc) can be used in the usual way
including plotting on a graph etc.
The GPS position data (latitude and longitude) can also be used for the
following:
1. Plot the actual path travelled on a GPS Track component.
To do this Select Add | GPS Track.
2. Generate the conventional track map.
To do this select Tools | Track Editor, then click Generate Track and select
the GPS method.
3. Plot the path travelled over a Google Earth image.
To do this select File | Google Earth Export.