Scan P3

Drives the Zeiss P Series stereoplotters along user-defined scan lines for xyz profiling. During scanning the operator keeps the floating mark on the ground and points are stored by distance and (or) elevation change. The speed the instrument travels is determined by the speed knob.

Key-in	Description	Range
LAY=	Layer for scan lines	1-10,001
SHIFT=	Scan line shift width	Ground units
MINDIST=	Minimum recording distance	Ground units
DELTAZ	Delta Z recording distance	Ground units
ZCON=	Z control	0 = Footdisk 1 = Right handwheel 2 = P3 Y tablet motion
BEEP=	Beep when a point is stored?	0=No 1=Yes

Scan lines are stored as VrOne lines and this parameter defines the layer to store these lines.

Once the first scan line has been defined, multiple scan lines may be read based on its start point and azimuth. The shift width defines the distance between scan lines. The Move+ and Move- buttons in the Begin Scan menu move the scan start point by this distance.

During scanning, points will be stored at this distance along the scan line. The resulting distance may not be exact depending on the speed of the stereoplotter. This parameter should be slightly smaller that specification to ensure the proper number of points. The batch routine Grid Lines (GriLin) may be used to place exactly spaced points on existing lines.

During scanning, points will be stored at this delta elevation. The resulting distance may not be exact depending on the speed of the stereoplotter. This parameter should be slightly smaller that specification to ensure the proper number of points. Setting this parameter to zero will turn off Delta Z point collection.

The Z control defines the location of the Z motion during the scanning of a line. Options are Footdisk, Handwheel and P3 Y Tablet motion. If the P3 Y Tablet motion is selected then a positive y P-Cursor movement will lower the elevation and a negative y P-Cursor movement will raise the elevation.

If yes is selected, then the computer will emit the Vr Normal Beep wave sound each time a point is stored during scanning. The Normal Beep sound may be configured in the Vr Configuration program (VrCfig).

	Button	Description
1	Dig scan pt1	Digitize the location of the start of the first scan line
2	Enter coord	Enter the coordinate of the end of the first scan line
3
4
5
6
7	Params	Enter parameters
8
9
*
0	Toggle Snap	Toggles snap
#	End	Ends ScanP3

	Button	Description
1	Dig scan pt2	Digitize the location of end of the first scan line
2	Enter coord	Enter the coordinate of the end of the first scan line
3	Enter azi/dist	Compute the end of the first scan line from an azimuth and distance from the start on the scan line
4
5
6
7	Params	Enter parameters
8
9
*
0	Toggle Snap	Toggles snap
#	End	Returns to the previous menu

	Button	Description
1	Start scan	Starts scanning the current line
2	Move+	Moves to the next positive direction scan line
3	Move-	Moves to the next negative direction scan line
4	Drive to start	Drives to the start of the current scan line
5	Drive to end	Drives to the end of the current scan line
6
7	Params	Enters parameters
8
9
*
0	Toggle Snap	Toggles snap
#	End	Returns to the previous menu

	Button	Description
1	Force point	Forces a point onto the scan line at the current location
2	End	Ends the current scan line
3
4
5
6
7
8
9
*
0
#	End	Ends the current scan line

	Button	Description
1	Accept scan	Accepts the current scan line and stores the line
2	Reject scan	Rejects the current scan line
3
4
5
6
7
8
9
*
0
#	End	Returns to the main menu