Spectra Precision Survey Pro v5.4 User Manual
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•
BS Point [2]: Backsight point. The station location will be set from the
coordinates of the known point. The backsight circle orientation will also
be set to 0°00’00” in that case.
•
New Point [3]: This is a variant of backsight azimuth in which the azimuth
is given to a new point you would like to measure and add to the job.
The diagram below illustrates the three possible scenarios.
NOTE: A variant to this procedure exists (whatever the scenario used) if the
Survey with
True Azimuths setting is enabled (see Job > Settings > Surveying tab). In this case, the
backsight circle will always be set automatically to the true azimuth, either the entered
one (
BS Azimuth then renamed “True Azimuth” scenario and New Point scenario) or the
calculated one (
BS Point scenario).
The three scenarios are detailed below with the
Survey with True Azimuths option
disabled.
Start the station setup as follows:
• Go to the Main Menu, then tap
Survey > Station Setup.
• Choose
Setup Type= Known Point.
• Enter the name of the station setup point in the
Occupy Point field. The
point name can be entered directly, or, picked from the map or point list
using the
button.
• If you wish to ignore elevations in your job, check the
2D Survey box. You
will otherwise enter the height of instrument in the
HI field.
• Tap
Next.
Then, of the three possible options, choose the one that is suitable for your job:
1. If you choose
BS Azimuth:
• Aim the instrument in the direction of a known or assumed azimuth.
[2]
Known Backsight Point
Known Station Point
[3]
New Backsight Point
Known Station Point
[1]
Known Station Point
Known Azimuth Direction