SPECTRA PRECISION FOCUS 2 SERIES TOTAL STATION USER GUIDE
5 –
Applications
79
Reference Arc
Measuring distance and offset values on the arc curve.
1. From the
Program
menu, press
[2]
(or press
[v]
and
[REC/ENT]
) to select
Ref.Arc
.
The
Arc Start
screen appears.
2. Enter the start of the curve point (P1) and the azimuth of
its tangent line (AZ1).
–
To enter P1 by direct measurement, press the
MSR
softkey.
3. Choose a method to define the arc. The options are:
–
Use
P2-AZ2
to define the arc. Enter the point name of
P2 and azimuth of its tangent line (AZ2). P2 can be
any point on the tangent line that is to exit the curve.
–
Use
Rad-AZ2
to define the arc. Enter the radius and
azimuth of its tangent line (AZ2). In the radius (Rad)
field, enter a positive value for a clockwise curve.
Enter a negative value for a counterclockwise curve.
–
Use
Rad-Len
to define the arc. Enter radius and arc length. Similarly, in the radius (Rad) field,
enter a positive value for a clockwise curve. Enter a negative value for a counterclockwise
curve, as sh.
When all items are entered, the instrument calculates the curve. If the curve length (Len) is too
large for a circle of the given radius, it is shortened. If the curve is reasonable, press the
OK
softkey to confirm or press the
Abrt
softkey to redefine.
4. Sight the center of prism, and press
[MSR1]
or
[MSR2]
.
