Spectra Precision Survey Pro v4.6 Recon and Nomad User Manual - Manual (Page 90)

User’s Manual – Conventional Mode
80
Surveying with True Azimuths
Some people need to collect all of their horizontal angles in the form
of azimuths. Survey Pro can help automate this process by computing
the backsight azimuth after each new setup in a traverse and
updating the backsight circle and total station’s horizontal angle
accordingly.
1. You can setup on any existing point and use any other point in
the job as a backsight if the coordinate system is properly aligned
with true north. If not, you can occupy any point as long you have
a known azimuth to any reference.
2. In the Surveying Settings screen (Job > Settings > Surveying),
confirm that the Survey with True Azimuths checkbox is checked.
3. Set up the total station over the occupy point and aim it toward
your backsight.
4. Access the Backsight Setup screen; enter the Occupy Point, and
toggle the . BS Direction . / . BS Point . button to BS Direction . .
Note: When backsighting on a point, selecting BS Direction can still
be used, as described next, making it easier to view the azimuth to
the backsight.
5. If backsighting a known azimuth, enter it in the BS Direction field.
If backsighting a point, use the shortcut method to enter the
azimuth from the occupy point to the backsight point in the BS
Direction field. For example, if you are occupying Point 1 and
backsighting Point 2, enter 1-2 in the BS Direction field. Once the
cursor leaves that field, the computed azimuth will replace what
you typed.
6. Tap Solve . The Backsight Solved screen will open.
7. If the backsight azimuth is not already in the BS Circle field, enter
it.