Spectra Precision Survey Pro v4.9 User Manual
Page 180
Although the graphic portion of the screen is continuously updated, the numeric values are not updated until the [Shot]
button is tapped. The correct procedure for slope staking in GPS mode is to use the graphic portion of the screen to
locate the catch point as closely as possible and press [Shot]. Once the position is satisfactory, you can determine if
the rover needs to be moved again.
GPS Status: displays the current solution type, the number of satellites used, and the horizontal and vertical precision
computed by the receiver. Tap on this button to open the detailed
The first button selects the type of slope that will be used between the catch point and hinge point from the following
options:
[>Automatic Slope]: selects the slope based on the current rover position. If the rover is above the hinge point,
a cut slope is computed. If the rover is below the hinge point, a fill slope is computed.
[>Force CUT Slope]: forces all computations to be based on a cut slope.
[>Force FILL Slope]: forces all computations to be based on a fill slope.
The second button selects which information is displayed in the lower corner of the screen from the following options:
[>V Map]: displays a cross-sectional view at the current station.
Note: When you tap a map view, an expanded view of the same map will fill the screen.
Note: The Vertical Map will show an X at the location of each previous shot. This can be useful in determining if the
current terrain will never intersect the slope (no catch point).
[>H Map]: displays an overhead view of the job.
[>N,E,Z]: displays the coordinates computed from the last shot.
[Occupy…]:opens the Occupy Data Points screen where data can be collected for the current point.
[Side Shot]: allows you to store a side shot measurement during stake out. This button opens a prompt for the side
shot point name and opens the GPS Occupy Data Points screen. After you store the new point (or cancel) you will
resume with the Slope Staking screen.
Results: displays the results computed from the last [Shot].
Obs. Slope: is the computed (observed) cut or fill slope based on the last shot and the corresponding hinge point.
Des. Slope: is the design cut or fill slope.
Cut / Fill: is the cut or fill required for the current rover location to be positioned on the design slope.
Toward CL / Away CL: is the computed horizontal distance that the rod must move either toward the centerline or
away from it, respectively, before it is positioned at the catch point.
Note: The computed horizontal distance is based on the observed terrain computed from the last two shots. If only one
shot has been taken, it is assumed that the terrain is level when computing this value.
On Station / Back Sta / Ahead Sta: informs you if the rod is on the station being staked, or the distance it must move
(parallel to the centerline) back or ahead to be on the correct station.
HD to HP: is the horizontal distance from the rod to the hinge point.
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