DeLorme Earthmate PN-40 User Manual page 22

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They use the bearing and distance information for each waypoint to navigate along the service
road. Once they are parallel to a mile marker, they set out on foot to the pipeline, using the
aerial imagery, topographic, and GIS data to give them field reference.
3. Once the line locations are located, the crew collects pertinent waypoints and tracks on the
Earthmate PN-40 to record information about the line. They use the various waypoint symbols
on the Earthmate PN-40 to represent different features, such as areas in need of service or
areas where there are dangerous trees that need to be removed. When they come across an
area where the GIS data does not correlate with the location of the utility line in the field, they
record a track for that length of segment and drop waypoints at each line vertex.
4. When the field crew is finished, they return to the office and download the waypoints and
tracks to XMap. Then they review the data to update any labels that need clarification and put
additional notes for the points using the MapNote feature in the Draw tab.
5. Once they are finished with the review, they synchronize their field data to the central GIS
database using the synchronize feature in XMap.
6. The next day, the GIS database manager responsible for the division reviews their synchronized
data against the corporate GIS layer and updates the corporate layer using the GIS editing
tools within XMap.