Sokkia im-101 Operator's Manual page 122

 Allocating [TRAV]: "33.12 Allocating Key Functions"
• Traverse adjustment results of traverse points, points observed from traverse points and traverse adjustment
data will be saved in the currently selected JOB as Notes data. Data including the distributed closure error
will also be saved in the currently selected JOB as ordinary coordinate data.
Traverse line record (3):
Adjustment setting record (1):
Closure error record (2x2):
Coordinate adjustment record
(No. of included points between start and end points): Coordinates

Types of traverse
iM can calculate closed-loop and closed traverses. In both cases, the azimuth for the start point (and for
the end point in the case of a closed traverse) must be set.

Automatic route search
This function searches for consecutively-observed traverse points already stored on the iM and presents
them as potential traverse routes.
This function is activated when the following conditions are met. When a point has been observed more
than once, the most recent data will be used for the search.
• At least one backsight station and one foresight station are observed from an instrument station.
• The foresight station becomes the instrument station for the subsequent measurement.
• The instrument station becomes the backsight station for the subsequent measurement.
If one of the following conditions is met, the automatic route search will terminate. The same search can
be resumed by specifying the name of the next point in the route.
• There is more than one potential foresight station for an instrument station. (Route search terminates as
a juncture appears in the route.)
• The foresight station for the previous measurement was the Start pt. (Route search terminates as this
measurement is judged to have closed a closed-loop traverse.)
• The most recently measured point has the same point name as a recorded known point. (Route search
terminates as this point is judged to be the End pt.)
1. point names of start and end points
2. backsight station name and azimuth to said backsight station
3. foresight station name and azimuth to said foresight
The selected method for distributing closure error.
1. precision and closure error for angle/distance
2. coordinate closure error
closed-loop traverse
closed traverse
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24. TRAVERSE ADJUSTMENT