G-858BP Backpack Mag
Operators Manual
Defining the Survey Area
--- SET UP DISPLAY ---
This menu sets up how the X and Y
axes are displayed on the map.
< BIDIRECTIONAL > Survey
Lower left corner of display:
X: [ 0.00 ] Y: [ 0.00 ]
Upper right corner of display:
X: [ 100.00 ] Y: [ 100.00 ]
Survey parallel to < Y > axis
Line Spacing: [ 2.00 ]
Mark Spacing: [ 20.00 ]
DONE ENTERING INFO
Set Up Display Menu
The actions of the various fields areas follows:
Bi-directional or uni-directional survey
This field describes whether you will take data walking both up and down lines or walking up the lines
only.
Lower left corner
Upper right corner
Here, you must describe the coordinates of the survey area by entering the lower left and upper
right extents of the displayed area. If the area is not a rectangular shape, define a bounding rectangle
containing the survey site. You may use any units you like.
There are several things you must keep in mind when deciding how to define the survey, and how
you will be walking to cover the area. First of all, survey lines are assumed to be shown vertically on the
display. This makes it easier to visualize where you are when you are standing at the beginning of a survey
line looking towards the end of the line.
Secondly, the unit assumes that you will be surveying lines from left to right across the display. In
other words, when the END LINE key is pressed the cursor will move to the next line to the right on the
display.
The map height must be an integral number of mark spacings. During the survey, you may
manually enter positions at ends of lines which do not reach to the next fiducial mark. See the section
“Manually Entering a Position,” later in this chapter.
Note:
Remember that you are defining the way the coordinates are viewed on
the display of the G-858BP. See the later section “Defining a Physical Area”
for more details on how to define your survey.
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