v5.20 - Classic DocuShare Home - Trimble

5 In the Field
B Tip
– If you have lined up the road so that it points straight ahead but the
Target is at the bottom of the screen, you have turned in the wrong
direction and are heading away from the Target. Turn 180° so that the
Target is at the top of the screen. The Turn Info panel can be a helpful
indicator of the direction you need to move in.
The four Info panels can also be configured to display relevant
text-based navigation information next to the road. To set options for
both graphical navigation modes, press the& softkey. The
Navigation options form appears.
Road scale
The road scale determines the actual distance the width of the road
represents. If you have selected a Start position, the center of the road
represents the direct path from Start to Target. If you stray to one side
of this direct path, the display moves the road sideways so the stick
figure is walking off the center line or off the road itself. The distance
you have strayed is called the cross-track error. The width of the road
in the display shows you the amount of cross-track error in your path.
The road width shown depends on the road scale you choose and how
far you are from the Target.
You can make the road narrower or wider, depending on how
accurately you want to navigate. When you stray sideways from the
direct path, the stick figure is displayed as being off the road. The
wider the road scale, the more you can stray before the stick figure
leaves the road.
If you want to stay very close to the path you are following, set a
narrow road scale. If you only want to go in the general direction of
the Target, and following the path exactly is not important, set a wide
scale. To set the road scale, use the&softkey.
Note – The road scale only adjusts the width of the road when a Start
point has been selected. This is because it is computed using the
cross-track error.
132 TSC1 Asset Surveyor Operation Manual